Answer:
Explanation:
kinetic energy=1/2*mass*velocity^2
=1/2*14kg*10^2
=7*100
=700 joule
Two metal spheres having charges of +4.0 × 10^–6 coulomb and +2.0 × 10^–5 coulomb, respectively, are brought into contact and then separated. What is the charge on each sphere after separation?
Answer:
The correct answer is "[tex]12\times 10^{-6} \ C[/tex]".
Explanation:
Given that,
[tex]Q1=+4.0\times 10^{-6} \ C[/tex]
and,
[tex]Q2=+2.0\times 10^{-5} \ C[/tex]
or,
[tex]=20\times 10^{-6} \ C[/tex]
then,
The total charge will be:
⇒ [tex]Q =Q1+Q2[/tex]
[tex]=(+4.0\times 10^{-6}) +(20\times 10^{-6})[/tex]
[tex]=24.0\times 10^{-6} \ C[/tex]
hence,
After separation, the charge on each sphere will be:
⇒ [tex]q=\frac{Q}{2}[/tex]
[tex]=\frac{24.0\times 10^{-6}}{2}[/tex]
[tex]=12\times 10^{-6} \ C[/tex]
The wasted energy in processing food is “lost” to ____.
mechanical energy
light energy
chemical energy
heat energy
The wasted energy in processing food is "lost" to heat energy .
What is heat energy ?The form of energy which is transferred between objects having different temperature is called heat energy.
How heat energy is lost in food processing ?In food processing heat transfer is an essential part. Baking , boiling , grilling , freezing etc . all activities are done for food processing. In all these processes heat energy is lost.Thus, we can conclude that heat energy is wasted in the food processing .
Learn more about heat energy here:
brainly.com/question/19666326
#SPJ1
what does the splitting of light into component colours through a prism indicate about the composition of sunlight?
[tex] \huge\longrightarrow{ \mathfrak{ \underline{ Answer }}}[/tex]
The Sunlight is actually white in colour, but it's a mixture of seven different coloured lights of different wavelengths, and when sunlight is passed through a prism, it splits into its constituent units forming a spectrum when observed on a screen. And this shows that the Sunlight is composed of seven different coloured lights .
____________________________
They are :
Red ( highest wavelength )OrangeYellowGreen Blue Indigo Voilet ( lowest wavelength )____________________________
[tex]\mathrm{ \#TeeNForeveR}[/tex]
Three resistors of equal resistance are connected in series as shown. Compared to the voltage provided by the battery, voltage across each of the resistors is .
Answer:
the voltage across each resistor is one third of the battery voltage
Explanation:
In a series circuit, the current is constant throughout the circuit, so the battery voltage is equal to the sum of the voltage drop in each part of the series circuit.
V = i (R₁ + R₂ + R₃)
in the exercise indicate that all resistance has the same value
R₀ = R₁ = R₂ = R₃
V = i 3 R₀
V = 3 V₀
V₀ = i R₀
V₀= V / 3
the voltage across each resistor is one third of the battery voltage
Write two properties electric field lines. Sketch electric field lines for an electric dipole
Answer:
Properties of an Electric Field
Field lines never intersect each other. They are perpendicular to the surface charge. The field is strong when the lines are close together, and it is weak when the field lines move apart from each other. The number of field lines is directly proportional to the magnitude of the charge.
Explanation:
There can be several
in an ecosystem?
Baker's weight and mass are measured on Earth and on the moon. Which measurement is the same in both places?
Answer: mass
The mass of a person is constant, weight is a force that is influenced by gravity.
Which is true for a substance that releases energy? A. The energy release decreases the molecular motion and the kinetic energy of the substance. B. The energy release decreases the molecular motion but increases the kinetic energy of the substance. C. The energy release increases the molecular motion and the kinetic energy of the substance. D. The energy release increases the molecular motion but decreases the kinetic energy of the substance. E. The energy release is used only to change the state of the substance.
Answer:
Option B
Explanation:
What effect does this gene mutation have on a person?
Answer:
Harmful mutations may cause genetic disorders or cancer. A genetic disorder is a disease caused by a mutation in one or a few genes. A human example is cystic fibrosis. A mutation in a single gene causes the body to produce thick, sticky mucus that clogs the lungs and blocks ducts in digestive organs.
Explanation:
Una persona ha de fer una força horitzontal de 400 N per arrossegar amb M.R.U. Un moble de 900 N. El moble es desplaça 5 m sobre el sòl, que és horitzontal. Calcula el treball realitzat per la força que exerceix la persona, per la força de fregament i pel pes del moble.
Answer:
Parte A
2000 J
Parte B
400 N
Parte C
900 N
Explanation:
Los parámetros dados son;
La fuerza horizontal con la que la persona arrastra los muebles = 400 N
El peso de los muebles = 900 N
La distancia que se mueve el mueble en el piso = 5 m
El tipo de movimiento del mueble = M.R.U. Movimiento de línea uniforme
Por lo tanto;
Parte A
Trabajo realizado = Fuerza × Dirección de movimiento de la fuerza
Por lo tanto;
Trabajo realizado en, W = 400 N × 5 m = 2000 J
Parte B
La fuerza horizontal aplicada para arrastrar el mueble = 400 N = La fuerza de fricción que actúa sobre el mueble
La fuerza de fricción que actúa sobre el mueble = 400 N
Parte C
El peso de los muebles se toma como dado 900 N.
An alpha particle (the nucleus of a helium atom, carrying a charge of 3.2x10 ^-19 C) moves at 5.5x10 ^7 m/s at a right angle to the magnetic field. If the particle experiences a force of 1.5x10 ^-14 N due to the magnetic field, then what is the magnitude of the magnetic field?
Answer:i think its 7.5
Explanation:
Water drips from a faucet at the rate of 150 drops in 120 seconds. What is the period?
Answer:
.80
Explanation:
The period of the dripping faucet is 0.8 seconds per drip cycle.
What is the rate?The rate is a measure of how much something changes over time and is typically expressed as a ratio of two quantities with different units of measurement.
Here,
The period of a dripping faucet is the time it takes for one complete drip cycle. To find the period, we need to divide the total time by the number of drip cycles.
In this case, the faucet drips 150 times in 120 seconds, so the time for one drip cycle is,
120 seconds / 150 drips = 0.8 seconds/drip
Therefore, the period of the dripping faucet is 0.8 seconds per drip cycle.
Learn more about the rate here:
https://brainly.com/question/28012882
#SPJ6
To make hot chocolate for you and your friends, you must melt 3.0 kg of snow (0.0°C) and heat it to 70.0°C to make the hot chocolate. Calculate the total amount of heat needed.
Heat of fusion of ice = 3.34 × 10^5 J/kg, Specific Heat of Water = 4180 J/(kg.K)
Answer: [tex]18.798\times 10^5\ J[/tex]
Explanation:
Given
Mass of snow is [tex]m=3\ kg[/tex]
First snow is converted to water at [tex]0^{\circ}C[/tex] and then it is taken to [tex]70^{\circ}C[/tex]
Heat required to convert the ice into water at [tex]0^{\circ}C[/tex]
[tex]Q_1=3\times 3.34\times 10^5\\Q_1=10.02\times 10^5\ J[/tex]
Heat required to raise temperature from [tex]0^{\circ}C[/tex] to [tex]70^{\circ}C[/tex]
[tex]Q_2=3\times 4180\times (70-0)\\Q_2=8.778\times 10^5\ J[/tex]
Total heat required
[tex]\Rightarrow Q=Q_1+Q_2\\\Rightarrow Q=10.02\times 10^5+8.778\times 10^5\\\Rightarrow Q=18.798\times 10^5\ J[/tex]
How to use electromagnetic spectrum in a sentence?
Answer:
The enemy can use his vision across a broadband of the electromagnetic spectrum . Our century has seen the entire electromagnetic spectrum opened for business.
Explanation:
Ann and Jesse’s mom is driving them to school. They are listening to music on an FM radio station. When they ride in the car with their father, they sometimes listen to AM radio. Ann wants to find out the difference between AM and FM radio signals. She finds a diagram in an online search. How do the AM and FM radio waves compare? In your answer, explain how the wavelength affects the frequency of the radio waves.
Answer:
the difference is that the carrier waves are altered. am waves amplitude (strength) is varied in the signal to get sound information. Fm waves frequency’s are varied based on the carrier signal.
Explanation:
please somebody help i took screenshot ik there is a blank space but look down a little
Answer:
Force has a direct relationship to mass and acceleration. Newton's Second Law, force equals mass times acceleration (F=MA), illustrates their general relationship in an equation.
Explanation:
Relationships to remember:
Force and acceleration have a direct relationship, meaning if force increases, acceleration will also increase and vice versa(Ex: The harder you push a box, the faster it will move)
Mass and acceleration have an inverse relationship, meaning if mass increases, acceleration will decrease and vice versa(Ex: If you add more furniture in the back of a moving company truck, the truck will move slower than it did before the furniture was added)
Force and mass have a direct relationship, meaning if mass increases, force will also increase(Ex: You will need to exert less force to lift a 5-pound weight than a 10-pound weight)
And of course, Newton's Second Law, F=MA sums all of this up in 3 letters and a symbol! If you have any more questions about this problem, please comment on my answer :)
Atoms in group 18 are inert (chemicalally unreactive) because
Answer:
They have a full shell of valence electrons and are very stable .
Explanation:
Answer
atoms in group 18 are chemically inert because they are stable and do not take part in any chemical reaction.
Explanation:
Two positive charges of same magnitude are separated by some distance if we bring a unit positive charge from one charge to another electric potential ?
Answer:
Increases.
Explanation:
The electric potential increases when the two positive charges of same magnitude bring close to one charge to another because there is repulsive force between them due to same charge and when the two opposite charges move away from each other, the potential energy decreases. When two opposite charges are brought closer together, electric potential energy decreases while on the other hand, when we move opposite charges apart from each other than the work done against the attractive force that leads to an increase in electric potential energy.
what is the refractive index between glass and water?
Answer:
The Refractive index of water is 1.3 and the refractive index of glass is 1.5.
Suppose you are helping a friend move. The friend asks you stand in the back of a pickup truck to hold a piano because there is no rope available to tie it down. Explain why you should refuse this request.
Explanation:
This exposes the individual to danger. Remember, the Newton Law of motion which says that an object under the state of rest will remain in that state (inertia) unless when acted upon by an external force.
In this scenario, standing at the back of the pickup truck presents danger especially if the truck suddenly stops; this individual would experience an upward thrust due to inertia that may disbalance him.
#1- How much Magnesium is consumed in this reaction? *input # only.
#2- How much Magnesium Oxide is produced in this reaction? *input # only.
Answer:
use the mole concept
Explanation:
the mole to mole ratio
The distance from Abdullah's house to his school is 2.4km. Abdulla takes 0.6h to go to school on his cycle but takes only 0.4h to return home. His average speed is
Answer:
The average speed can be calculated as the quotient between the distance travelled and the time needed to travel that distance.
To go to the school, he travels 2.4 km in 0.6 hours, then here the average speed is:
s = (2.4km)/(0.6 hours) = 4 km/h
To return to his home, he travels 2.4km again, this time in only 0.4 hours, then here the average speed is:
s' = (2.4 km)/(0.4 hours) = 6 km/h.
Now, if we want the total average speed (of going and returning) we have that the total distance traveled is two times the distance between his home and school, and the total time is 0.6 hours plus 0.4 hours, then the average speed is:
S = (2*2.4 km)/(0.6 hours + 0.4 hours)
S = (4.8km)/(1 h) = 4.8 km/h
0. The volume of a cube is 27cm3. Find the length of edge of cube.
Answer:
27 cm3
Explanation:
mages formed by concave lenses are
Question 13 options:
virtual, upright , diminished (small)
virtual , magnified (enlarged), inverted
real, inverted, magnified
real, inverted, diminished
Answer:
so its the first option
Explanation:
Concave lenses create only virtual images. After the rays are refracted, they never converge and so there will be no real images. All concave lens images will be upright, virtual, and diminished, and can be found between the F and the lens
Answer: The correct answer is;
Virtual
Upright
Diminished
Explanation: Hope this answers your question :)
A ball travels around a roulette wheel with a radius of 0.4 m at a tangential velocity of 1.1 m/s. What is the period of the ball as it travels around the wheel?
Answer:
T = 2.28 s
Explanation:
Given that,
The radius of the wheel, r = 0.4 m
The tangential velocity of the wheel, v = 1.1 m/s
We need to find the period of the ball as it travels around the wheel. Let it is T. We know that, the tangential speed is given by :
[tex]v=\dfrac{2\pi r}{T}\\\\T=\dfrac{2\pi r}{v}\\\\T=\dfrac{2\pi \times 0.4}{1.1}\\\\T=2.28\ s[/tex]
So, the period of the ball is equal to 2.28 s.
what would the speed of this wave be?
(a) 5 m/s
(b) 50,000 m/s
(c) 100,000 m/s
(d) 5,000 m/s
Answer:
c) 100,000 m/s
Explanation:
You need to take the same wave length from the top graph and bottom one, so let's take half a wave length then in the top one that is 0.005, but in the bottom one it's 2000/4 = 500 because they are smaller and there are 4 half waves before you get to 2000, whereas in the top one there is 1 half wave before you get to 0.005 on the graph.
Now use speed = distance / time
speed = 500 / 0.005 = 100 000 m/s
Make a list of things you pull at home
Please help ASAP. Its for my sister
Answer: Chairs, Plants, Food, electronics, etc.
Explanation:
How does an increase in greenhouse gases in the atmosphere cause an increase in global temperature?
Answer:
Greenhouse gases absorb and emit radiation and less heat dissipates to spaceExplanation:
when heat is trapped it is conducted to the trapped area and gradually heats up its surrounding
Can a body have a constant speed but varying velocity?explain
Answer:
please give me brainlist and follow
Explanation:
Yes if the body is travelling with uniform speed in a circular track its speed remains the same but the velocity is non-uniform as the direction of the body is changing every time.
The hydraulic tool holder is a type of what? A.port B. clamp C. Press D. Actuator
Answer:
A
Explanation: