Answer:
A) The person's body temperature T_final after equilibrium is attained = 36.85°C
B) The change in the person's temperature after equilibrium is attained = 0.15°C
A high-quality medical thermometer can measure temperature changes as small as 0.1°C, hence, YES, it would detect the minute drop by 0.15°C too.
Explanation:
If we assume that the soft drink has the same density as water (since it is stated in the question that it is mostly water).
Density of water = 1 g/mL = 1 kg/L
Ignoring any heating by the person's metabolism,
A) So, heat lost by the human body = heat gained by the soft drink as it attains thermal equilibrium with the human body
Let the final temperature of the human body + soft drink set up be T
Heat lost by the human body = mCΔT
m = mass of the human body = 70.0 kg
C = Specific heat capacity of the human body = 3480 J/kg.K
ΔT = Temperature change of the human body = 37 - (Final temperature) = 37 - T
Heat lost by the body = 70 × 3480 × (37 - T)
= (9,013,200 - 243,600T) J
Heat gained by soft drink = mCΔT
m = mass of the soft drink = density × volume = 1 × 0.355 = 0.355 kg
C = specific heat capacity of the soft drink = specific heat capacity of the soft drink = 4182 J/kg.K
ΔT = (final temperature) - 12 = (T - 12)
Heat gained by the soft drink = 0.355 × 4182 × (T - 12) = (1,484.61T - 17,815.32) J
heat lost by the human body = heat gained by the soft drink as it attains thermal equilibrium with the human body
(9,013,200 - 243,600T) = (1,484.61T - 17,815.32)
9,013,200 + 17,815.32 = 1,484.61T + 243,600T
9,031,015.32 = 245,084.61T
T = (9,031,015.32/245,084.61)
= 36.8485614825 = 36.85°C
B) The change in the person's temperature = 37 - 36.85 = 0.15°C
A high-quality medical thermometer can measure temperature changes as small as 0.1°C, hence it would detect the minute drop by 0.15°C too.
Hope this Helps!!!
The equilibrium temperature is required and to find whether the temperature change can be measured by a thermometer is required.
The temperature is 310 K.
Yes, the thermometer can measure the temperature difference.
[tex]m_1[/tex] = Mass of person = 70 kg
[tex]c_1[/tex] = Specific heat of person = 3480 J/kg K
T = Equilibrium temperature
[tex]T_1[/tex] = Temperature of person = [tex]37\ ^{\circ}\text{C}+273.15 =310.15\ \text{K}[/tex]
[tex]1\ \text{L}=1\ \text{kg}[/tex] of water
[tex]m_2[/tex] = Mass of water = [tex]0.355\ \text{kg}[/tex]
[tex]c_2[/tex] = Specific heat of soft drink mostly water = [tex]4186\ \text{J/kg K}[/tex]
[tex]T_2[/tex] = Temperature of soft drink = [tex]12\ ^{\circ}\text{C}=285.15\ \text{K}[/tex]
The heat equation is
[tex]m_1c_1(T-T_1)=m_2c_2(T_2-T)\\\Rightarrow m_1c_1T-m_1c_1T_1=m_2c_2T_2-m_2c_2T\\\Rightarrow T=\dfrac{m_2c_2T_2+m_1c_1T_1}{m_1c_1+m_2c_2}\\\Rightarrow T=\dfrac{0.355\times 4186\times 285.15+70\times 3480\times 310.15}{70\times 3480+0.355\times 4186}\\\Rightarrow T=310\ \text{K}[/tex]
The temperature difference is [tex]T_1-T=310.15-310=0.15\ \text{K}=0.15\ ^{\circ}\text{C}[/tex]
Yes, the thermometer can measure the temperature difference.
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Please someone to help me with this will be very grateful In a light bulb, how is electrical energy transformed into light? and in an LED, will it be the same?
Answer:
LED;
The energy of photons emitted by an LED is dictated by the band gap of the semiconductor used – the energy required to make an electron–hole pair. When an electron and hole recombine in a radiative process, a photon carries away the extra energy.
BULB
In the light bulb, the flow of charge through the filament heats it up and causes it to glow. In this way, the light bulb converts electrical energy to heat energy and light energy. ... 1, chemical potential energy is converted to electrical energy, which is immediately converted to light energy and heat energy
This flow of charge converts chemical potential energy into electrical energy. In the light bulb, the flow of charge through the filament heats it up and causes it to glow. In this way, the light bulb converts electrical energy to heat energy and light energy. bulb have a fillament but LED have no filament they produce energy through clod process but bulb have a filament and they produce energy through hot process
Explanation:
This progression of charge changes over substance expected vitality into electrical vitality. In the light, the progression of charge through the fiber warms it up and makes it shine. Along these lines, the light believers electrical vitality to warm vitality and light vitality.
hope soo u can understand my point
The center of a bar magnet whose magnetic dipole moment is <6,0,0> A·m2 is located at the origin. A second bar magnet whose magnetic dipole moment is <7, 0, 0> A·m2 is located at 0.23 m. What is the vector force on the second magnet due to the first magnet? (Express your answer in vector form.)
Complete Question
The complete question is shown on the first uploaded image
Answer:
The force is [tex]\= F = (-0.001089, 0 ,0)[/tex]
Explanation:
From the question we are told that
The magnetic dipole moment of first magnet is [tex]z_1 = (6,0,0) A \cdot m^2[/tex]
The magnetic dipole moment of second magnet is [tex]z_2 = (7,0,0) A \cdot m^2[/tex]
The location of the second magnetic dipole moment is [tex]x = 0.39 \ m[/tex]
Generally the vector force on the second magnet due to the first is mathematically evaluated as
[tex]\= F =- \frac{\mu_o }{4 \pi} * \frac{6 * z_1 * z_2}{x^4}[/tex]
Where [tex]\mu _o[/tex] is the permeability of free space with value [tex]4\pi * 10^{-7} N/A^2[/tex]
substituting values
[tex]\= F = - \frac{ 4\pi * 10^{-7} }{4 \pi} * \frac{6 * 6 * 7}{0.39^4}[/tex]
[tex]\= F = (-0.001089, 0 ,0)[/tex]
Note the negative sign show that the force is an attraction force
why is urbanization a contribution to pollution?
Answer:
people in urban areas strip the soil of nutrition and makes it difficult to grow crops. people of urban areas consume more energy,food,and water. people in urban areas remove minerals and metals from the ground so, urbanization is a contribution to pollution .
Explanation:
it may help you and give me brainliest
Answer:
pollution and loss of trees not to mention how much electricity we use which doesnt benefit the world.
Explanation: because when we urbanize things we get rid of natural resources around us
water is a nonpolar molecule true or false
Answer:
Water is non-polar molecule False
Water is polar molecule because the electronegativity of Oxygen is much greater than electronegativity of hydrogen and it has also a bend shape that is why it is polar molecule.
Explanation:
I hope this will help you :)
False. Water is a polar molecule.
About waterWater (H2O) consists of two hydrogen atoms and one oxygen atom. The oxygen atom has a higher electronegativity, meaning it attracts electrons more strongly than hydrogen.
As a result, the shared electrons in the covalent bonds between hydrogen and oxygen are pulled closer to the oxygen atom, creating an uneven distribution of charge.
This leads to a partial negative charge (δ-) on the oxygen atom and partial positive charges (δ+) on the hydrogen atoms, making water a polar molecule.
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Swamp coolers are effective because _____.
A. the water is colder than the air.
B. the water pulls heat from the room to undergo a phase change.
C. the thermal energy of the water is decreasing.
D. the water's latent heat of vaporization is being pulled from the air.
Answer:
D. the water's latent heat of vaporization is being pulled from the air.
Explanation:
A swamp cooler also generally referred to as the evaporative cooler is an electronic device that uses moisture to cool air. This simply means that, the electronic device works on the principle of evaporation of water to cool the surrounding air.
In swamp coolers, water absorbs large amount of warm air via the evaporative wet cooler pad, so as to evaporate and consequently cooling the air effectively and efficiently.
Swamp coolers are effective because the water's latent heat of vaporization is being pulled from the air.
The latent heat of vaporization can be defined as the energy that is being absorbed by water during evaporation.
The swamp coolers are typically made up of the following essential components, these are;
1. Float.
2. Blower.
3. Pump.
4. Evaporative pad.
5. Water supply valve.
Hence, through the principle of evaporative cooling (latent heat of vaporization), swamp coolers reduces or lower the air temperature in its surroundings.
Answer:
B and D
Explanation:
HURRY!!!!
Fred and Ted are racing cars down a frictionless track with a jump at the bottom
when suddenly an argument breaks out. Fred says, “If we release the cars from a
point twice as high as we are currently doing so, the cars will have twice the
gravitational potential energy, and therefore be travelling twice fast when they hit
the jump." Ted says, “In order to double the speed of the cars when they hit the
ramp, I think we will have to more than double the height!" Who is right? Prove it!
Answer:
Ted is correct
Explanation:
The equation for gravitational potential energy is PE = m·g·h
The equation for gravitational kinetic energy is KE = 1/2·m·v²
Where:
m = Mass of the object (The racing car)
g = Acceleration due to gravity
h = The height to which the object is raised
v = Velocity of motion of the object
From the principle of conservation of energy, energy can neither be created nor destroyed but changes from one form to another, we have;
Potential energy gained from location at height h = Kinetic energy gained as the object moves down the level ground
m·g·h = 1/2·m·v² canceling like terms gives
g·h = 1/2·v²
v = (√2·g·h)
If the speed is doubled, we have
2·v = 2× (√2·g·h) = (√2·g·4·h)
Therefore, if 2·v = v₂ then v₂ = (√2·g·4·h)
Since g, the acceleration due to gravity, is constant, it means that the initial height must be multiplied or increased 4 times to get the new height, that is we have;
v₂ = (√2·g·4·h) = (√2·g·h₂)
Where:
4·h = h₂
Which gives;
v₂² = 2·g·h₂
1/2·v₂² = g·h₂
1/2·m·v₂² = m·g·h₂ Just like in the first relation
Therefore, Ted is correct s they need to go up four times the initial height to double the speed.
uniform circular motion occurs when a object is traveling with _______ speed in a circle
write the adavandages and disadvanges of solar energy
Answer:
advantage of solar enegry are;
1. it helps to minimize pollution.
2. it helps in conservation of non renewable sources of enegry.
3. it is very necessary for the photosynthesis.
disadvantages are;
1. all the time we cant get it as sometime it rains due to which we mayn't be able to use it.
2. the product of solar enegry devices are expensive nowadays.
it is all...
Listed below are the measured radiation absorption rates (in W/kg) corresponding to 11 cell phones. Use the given data to construct a boxplot and identify the 5-number summary. 1.16 0.85 0.69 0.75 0.95 0.93 1.18 1.17 1.42 0.54 0.57 The 5-number summary is nothing, nothing, nothing, nothing, and nothing, all in W/kg. (Use ascending order. Type integers or decimals. Do not round.)
Answer:
The 5-number summary is
1. Median = 0.93 W/kg
2. Lower quartile = 0.69 W/kg
3. Upper quartile = 1.16 W/kg
4. Minimum value = 0.54 W/kg
5. Maximum value = 1.42 W/kg
Explanation:
We are given the measured radiation absorption rates (in W/kg) corresponding to 11 cell phones.
1.16 0.85 0.69 0.75 0.95 0.93 1.18 1.17 1.42 0.54 0.57
What is 5-number summary?
A 5-number summary refers to a box plot that basically shows 5 statistical characteristics of a data set.
These statistical characteristics are:
1. Median
2. Lower quartile
3. Upper quartile
4. Minimum value
5. Maximum value
1. Median:
Arrange the data in ascending order
0.54 0.57 0.69 0.75 0.85 0.93 0.95 1.16 1.17 1.18 1.42
(n+1)/2 gives the median value of the data set.
(11 + 1)/2 = 6th position
Therefore, 0.93 W/kg is the median of the data set.
2. Lower quartile:
Divide the data set into two equal halfs (include median in both if n = odd)
Lower half = 0.54 0.57 0.69 0.75 0.85 0.93
Upper half = 0.93 0.95 1.16 1.17 1.18 1.42
The lower quartile is the median of the lower half of the data set.
Lower half = 0.54 0.57 0.69 0.75 0.85 0.93
The median is 6/2 = 3rd position
Therefore, the lower quartile of the data set is 0.69 W/kg
3. Upper quartile:
Divide the data set into two equal halfs (include median in both if n = odd)
Lower half = 0.54 0.57 0.69 0.75 0.85 0.93
Upper half = 0.93 0.95 1.16 1.17 1.18 1.42
The upper quartile is the median of the lower half of the data set.
Upper half = 0.93 0.95 1.16 1.17 1.18 1.42
The median is 6/2 = 3rd position
Therefore, the upper quartile of the data set is 1.16 W/kg
4. Minimum value:
The minimum value is the least value in the data set.
0.54 0.57 0.69 0.75 0.85 0.93 0.95 1.16 1.17 1.18 1.42
Therefore, the minimum value of the data set is 0.54 W/kg
5. Maximum value
The maximum value is the least value in the data set.
0.54 0.57 0.69 0.75 0.85 0.93 0.95 1.16 1.17 1.18 1.42
Therefore, the maximum value of the data set is 1.42 W/kg
The box plot is illustrated in the attached diagram.
Momentum is a measure of the
of an object.
Which term accurately completes the sentence?
Answer:
Momentum is define as the product of the mass and velocity of a body. It is measured in Kgm/s.
Explanation:
Momentum is the product of mass and velocity of an object. When an object or a body of mass 'm' is moving with velocity 'v', then its momentum can be determined as;
momentum (P) = mass × velocity
i.e P = m × v
= mv
It is measured in Kgm/s.
The change in momentum of a body is referred to as its impulse (Ft).
ΔP = m(v - u) = Ft
Where: P is the momentum of the object, m is its mass, v is its final velocity, u is the initial velocity, F is the force and t is the time in which the force acts.
Answer:
B. Motion
Explanation:
momentum is the measure of motion.
Indicar tipo de unión química que presentan los siguientes compuestos. Realizar a representación de Lewis, molecular o iónica, según corresponda: a-CH4 b-SrO c-HBr d-NH3 e-Cl2O f-Li2O g-CO2 h-MgCl2
Answer:
Explanation:
a. CH₄- Covalent bonding(ligação covalente)
b. SrO- ionic bonding (ligação iônica)
c. HBr- Polar Covalent bonding (ligação covalente polar)
d. NH₃ - covalent bonding(ligação covalente)
e. Cl₂O - Covalent bonding (ligação covalente)
f. Li₂O- ionic bonding (ligação iônica)
g. CO₂ - double covalent bonding (ligação covalente dupla)
h. MgCl₂- ionic bonding(ligação iônica)
If it takes 600 N to move a box 5 meters, how much work is done on the box?
O
A. 600 J
OB. 5,000 J
O C. 3,000 J
O D. 120 J
Answer:
3000 JOption C is the correct option.
Explanation:
Given,
Force = 600 N
Distance = 5 meters
Work = ?
Now,
Work = Force [tex] \times [/tex] distance
[tex] = 600 \times 5[/tex]
Calculate the product
[tex] = 3000 \: [/tex] Joule
Hope this helps...
Good luck on your assignment..
A friend of yours who has not taken an astronomy class looks at your textbook and really likes the picture of the Pleiades, a cluster of stars surrounded by a bluish reflection nebula. She wants to know what causes that beautiful blue glow. To explain it to her, you want to compare the process that causes the blue glow to something that is in your friend's everyday experience. Which of the following terrestrial phenomena is the result of the same type of process that makes a reflection nebula in space?
A. the blueish glow of the flame on a gas stove
B. the blue light you see reflected from a blue sweater
C. the blue colour of the Earth's sky
D. the blue-white colour of the hottest stars
E. the blue feeling you get when you don't do well on an astronomy exam
Answer:
C. the blue colour of the Earth's sky
Explanation:
The Pleiades is a cluster of sister stars that are among the closest star cluster to earth.
The reflection nebula of the Pleiades is due to the scattering of the blue light from the hot blue luminous stars that dominate the star cluster. Th blue light is scattered from dust molecules, thought to be predominantly carbon compound like diamond dusts, and other compounds like iron.
The blue colour of the Earth's sky is the closest terrestrial phenomenon to the reflection nebula. On a clear cloudless day, molecules in the air scatter the blue component of light more than the other component colours of white light, giving the sky its characteristic blue coluor.
The common characteristics of the luminous nebula and the Earth's blue sky is that they both have their light scattered by the presence of small particles.
The volume of an object as a function of time is calculated by v = At3+B÷t where t is time measured in seconds and v is in cubic metres. Determine the dimension of the constants A and B.
Answer:
A = m³/s³ = [L]³/[T]³ = [L³T⁻³]
B = m³s = [L³T]
Explanation:
We have the equation:
V = At³ + B/t
where, the dimensions of each variable are as follows:
V = m³ = [L]³
t = s = [T]
substituting these in equation, we get:
m³ = A(s)³ + B/s
for the homogeneity of the equation:
A(s)³ = m³
A = m³/s³ = [L]³/[T]³ = [L³T⁻³]
Also,
B/s = m³
B = m³s = [L³T]
What do you observe as you immerse the empty jug in a bucket which contains water? Explain why you observe this phenomenon.
Answer:
The jug drowns because the density of the jug is more than that of the density of water.
Answer:
it gets force upwards .
as there is presence of atmospheric pressure in it which causes upthrust and push upwards.
Which statement describes the reason for the change in the velocity of waves as temperature decreases?
O The particles of the medium move faster and there are fewer chances to transfer energy.
O The particles of the medium move faster and there are more chances to transfer energy.
O The particles of the medium move more slowly and there are more chances to transfer energy.
O The particles of the medium move more slowly and there are fewer chances to transfer energy.
Answer:
O The particles of the medium move more slowly and there are fewer chances to transfer energy.
Explanation:
Various media are made up of particles. These particles are in constant motion according to the kinetic theory of matter. Recall that temperature has been defined as the average kinetic energy of the particles in a medium. Hence, for any given medium, the velocity of particle motion increases or decreases linearly with temperature.
The speed of particles in any medium increases or decreases as the temperature of the medium increases or decreases as emphasised above. Hence, at low temperature, the velocity of waves set up by the motion of particles in a medium decreases and transfer the wave energy to neighbouring particles occurs more slowly than at high temperatures.
Answer:
Person who answerd first you could have said D
Explanation: DDDDDDDDDDDDDDDD
A steel rod has a length of 0.2 cm at 30 degrees C, what will be its length at 60 degrees C?
Answer:
2.00072 mm
Explanation:
So, we just have to calculate 2 mm x (1 + 0.36 x 10⁻³) = 2 mm + 0.00072 mm = 2.00072 mm
Inertia law what happens when You are standing on the bus and the bus stops abruptly:
Answer:
You will fly forward in the bus until you hit something.
Explanation:
While standing there on the bus, you are traveling at the same speed as the bus. If the bus suddenly stops, you will still be traveling at the same speed you started with. That is until you hit something hard enough or big enough to stop you.
Answer:
You will fall towards the front of the bus i.e towards its front seat
Explanation:
When the bus is moving, you are supposed to be in that motion. Your body is experiencing a forward force as the bus is moving forward So when bus stops suddenly your inertia does not allow you to stay in that standing position it will let you move forrward to maintain your inertia so you will feel a forward push. (If you were sitting on a seat with seatbelt on you that seatbelt will make you come back when car or bus stops.)
I NEED HELP PLEASE, THANKS! :)
Holiday lights are often connected in series and use special lamps that short out when the potential difference across a lamp increases to the line voltage. Generate an explanation why and explain why these light sets might blow their fuses after many bulbs have failed.
Answer:
if there isn't a shorting mechanism, the whole sets will be blown out several lamps and then shortened, the overall resistance of the remaining operating lamps will be decreased resulting in an increased working current that is adequate to blast the fuse
A tennis racquet is used to bounce a tennis ball up and down. How long is the tennis racquet interacting with the tennis ball if the change in momentum is 35 kgm/s [up] and the average spring force by the racquet is 225 N?
Answer: 0.16s
Explanation:
Given the following :
Average spring force by the racquet (F) = 225N
Change in momentum = 35kgm/s
To determine the change in interaction time; that is the momentary for e acting in the tennis ball ( impulse)
Recall:
F = mass(m) × acceleration(a)
Acceleration (a) = change in Velocity with time
a = change in V / time(t)
F = m * change in V / t
Ft = m* change in v
Recall m* change in v = momentum
Ft = change in momentum
225 * t = 35
t = 35 / 225
t = 0.1555555
t = 0.16s
The speed of an electromagnetic wave is a constant, 3.0 × 108 m/s. The wavelength of a wave is 0.6 meters. What is the frequency?
Answer:
The answer to this should be: 5.0 x 10⁸ Hz
Explanation:
The speed, s, of a wave, equals the product of its frequency, ν, times its wavelength, λ:
s = νλ.
As the question states, the speed of an electromagnetic wave is a constant, c, equal to 3.0 × 10⁸ m/s.
Substituting this constant in the equation for the speed of the wave, you get:
c = νλ.
From that equation, you can solve for the frequency to show the inverse realation of frequency and wavelength:
ν = c / λ
Now, you just have to substitute values and compute, leaving you with:
5.0 x 10⁸ Hz
A car has a mass of 1.00 × 103 kilograms, and it has an acceleration of 4.5 meters/second2. What is the net force on the car
Answer:
[tex]4.5 *10^{3}\ kgm/s^{2}[/tex]
Explanation:
Given:
[tex]Mass= 1.00 * 10^{3} \ kilograms,\\Acceleration =4.5\ meters/second^{2}[/tex]
As we know that
Force=Mass * Acceleration
Putting the value of mass and Acceleration we get ,
[tex]Force\ = \ 1.00 * 10^{3} * 4.5\ m/s^{2}[/tex]
[tex]Force\ =4.5 * \ 10^{3} \ kgm/s^{2}[/tex]
Therefore Net force is :[tex]4.5 *10^{3}\ kgm/s^{2}[/tex]
Answer:
See image
Explanation:
Plato
A ball thrown horizontally at 18.5 m/s from the roof of a building lands 38.9 m from the base of the building.
How tall is the building?
Answer: height = 60.5 m
Explanation:
given that the
Initial velocity U = 18.5 m/s
Range = 38.9 m
Let us use second equation of motion under gravity
S = Ut + 1/2gt^2
Where S = range R
Since the motion is horizontal, g = 0
The equation is reduced to:
R = Ut
Make t the subject of formula
t = R/U
Substitute range R and U into the formula
t = 38.9/ 18.5
t = 2.1 s
To calculate the vertical height, we will consider g = 9.81 m/s^2 by using the same second equation of motion
h = Ut + 1/2gt^2
Substitute U, t and g into the formula
h = (18.5 × 2.1) + 1/2 × 9.8 × 2.1^2
h = 38.9 + 21.609
h = 60.51 m
The building is 60.51 metres tall.
on which four factors does the quantity of heat lost or gained by body depend?
The four factors the quantity of heat lost or gained by body depends specific heat capacity.
What is specific heat capacity and how it was related to heat loss or gain of the body?Specific heat capacity:
The quantity of heat absorbed per unit mass of the material when its temperature gets increases by 1K is said to be Specific heat Capacity.
The unit of specific heat capacity is J/(kg K).
The transferred heat depends on three factors:
The change in temperature The mass of the system, The substance The phase of the substance.Hence, these are the four factors the quantity of heat lost or gained by body depends.
Formula for specific heat capacity is,
[tex]Q=mc\Delta T[/tex]
Q - heat energy
m - mass
c - specific heat capacity
ΔT - change in temperature.
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N2 + O2 → 2NO N-N triple bond: 941 kJ/mol O-O double bond: 495 kJ/mol N-O bond: 201 kJ/mol
Answer:
[tex]\large \boxed{\text{761 kJ}}[/tex]
Explanation:
You calculate the energy required to break all the bonds in the reactants.
Then you subtract the energy needed to break all the bonds in the products.
N₂ + O₂ ⟶ 2NO
N≡N + O=O ⟶ 2O-N=O
Bonds: 2N≡N 1O=O 2N-O + 2N=O
D/kJ·mol⁻¹: 941 495 201 607
[tex]\begin{array}{rcl}\Delta H & = & \sum{D_{\text{reactants}}} - \sum{D_{\text{products}}}\\& = & 2 \times 941 +1 \times 495 - (2 \times 201 + 2\times 607)\\&=& 2377 - 1616\\&=&\textbf{761 kJ}\\\end{array}\\\text{The enthalpy of reaction is $\large \boxed{\textbf{761 kJ}}$}.[/tex]
what types of simple machine is wheel and
axle?
Answer:
lever is the correct answer to the given question .
Explanation:
The main purpose of wheel and axle to Migrating the particles as well as elevate the objects and the people.The wheel is the rounded disk or it may be the the rectangular outer part and the axle is the curved cylinder.
The axle is operating via the center square So they are connected to the various object.The wheel and the axle applications involve trying to lifting the large loads as well as pushing the things rapidly.what is the resistance of a car light bulb that conducts 0.025A current when connected to a 12V car accumulator? is the current in the bulb steady?
One form of Ohm's Law says . . . . . Resistance = Voltage / Current .
R = V / I
R = (12 v) / (0.025 A)
R = (12 / 0.025) (V/I)
R = 480 Ohms
I don't know if the current in the bulb is steady, because I don't know what a car's "accumulator" is. (Floogle isn't sure either.)
If you're referring to the car's battery, then the current is quite steady, because the battery is a purely DC storage container.
If you're referring to the car's "alternator" ... the thing that generates electrical energy in a car to keep the battery charged ... then the current is pulsating DC, because that's the form of the alternator's output.
HELPPP!!! I will give Brainliest!!! super easy question
I have a question. If a question has the numbers 500kg and 3000N, how many significant digits should the answer have?
Answer:
most likely just 1
Explanation:
I sucked at sig figs in middle school, in fact it was the lowest test grade i ever received, but it is relatively simple.
because there is only one sig fig involved in each number, there can't be multiple sig figs here. 3000/500=6
500/3000=2(round up from 1.66666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666) you get the point.
PLEASE HELP, THANK YOU!.. :)
Answer:
First Reaction:
[tex]^{234}U[/tex] => [tex]^{230} Th + ^{4}He[/tex]
Second Reaction:
[tex]^{230} Th[/tex] => [tex]^{226} Ra + ^{4}He[/tex]
Combined Reaction:
[tex]^{234} U[/tex] => [tex]^{226}Ra + 2( ^{4} He)[/tex]
How is it possible to blow a balloon?
Explanation:
To blow up a balloon, start by pinching the neck of the balloon with your index finger and thumb. Then, take a deep breath and put the opening of the balloon in between your lips. When you're ready, loosen your grip on the neck and blow into the balloon opening so the balloon starts to fill with air.May