Answer:
154.83 W
Explanation:
Applyying,
P = V²/R..................... Equation 1
Where P = power dissipated, V = voltage R = resistance
But,
R = Lρ/A................. Equation 2
Where L = length of the wire, A = crosssectional area, ρ = resistivity of the wire.
Substitute equation 2 into equation 1
P = V²/(Lρ/A)
P = AV²/Lρ........................ Equation 3
From the question,
Given: L = 30 cm = 0.3 m, ρ = 1.69 x 10⁻⁸Ω⋅m, V = 1 V.
But,
A = πd²/4, Where d = 1 mm
A = (3.14×0.001²/4) = 7.85×10⁻⁷ m²
Substitute these values into equation 3
P = (7.85×10⁻⁷×1²)/(0.3×1.69 x 10⁻⁸)
P = 154.83 W
the spring constant for each of these springs 100 000 N m-1. Calculate the distance that each of these rear springs is compressed by this vehicle as shown in the diagram above
Answer:
sorry
Explanation:
Three 18-ohm resistors are connected in series with an ideal 12-volt battery. What is the equivalent resistance of the circuit?
Answer:
RT = 54 Ohms
Explanation:
Given the following data;
Resistance = 18 Ohms
Voltage = 12 Volts
To find the equivalent resistance (RT) of the circuit;
For a series connection, the formula is;
RT = R1 + R2 + R3
RT = 18 + 18 + 18
RT = 54 Ohms
Or
RT = 3*R
RT = 3 * 18
RT = 54 Ohms
A ___ is a large ball of gas that generates its own energy. This energy is created by the fusion of ___ atoms to make ___.
Answer:
Star, hydrogen and energy
Explanation:
A star is a large ball of gas that generates its own energy by fusing hydrogen atoms to make helium. It is held together by its own gravity. This process emits a tremendous amount of energy, and some of the energy is in the form of light.
The energy released from the collapse of the gas into a protostar causes the center of the protostar to become extremely hot. When the core is hot enough, nuclear fusion commences. Fusion is the process where two hydrogen atoms combine to form a helium atom, releasing energy.
Asteroids move much slower and less frequently than stars. True False
it's false
Answer:
false plz mark brainliest
Which of the following in the list is the best conductor: plastic, metal, styrofoam, or glass?
Answer:
Metal
Explanation:
Answer:
metal is the best conductor. the others are insulators
what does thermal energy do
Answer:
Thermal energy can be transferred to one object to another in the form of heat. It causes molecules and atoms to collide with each other because of the rising of heat.
Explanation: Well thermal energy is a example of kinetic energy. It is heated by motion. It is heat that can be measured
state newton's second law
Answer:
La segunda ley de Newton define la relación exacta entre fuerza y aceleración matemáticamente. La aceleración de un objeto es directamente proporcional a la suma de todas las fuerzas que actúan sobre él e inversamente propocional a la masa del objeto, Masa es la cantidad de materia que el objeto tiene.
Explanation:
corona y corazon plis
[tex] \large{ \tt{❃ \: ANSWER}} : [/tex]
☄ Newton's second law of motion states that," acceleration produced in a body is directly proportional to the force applied to it in the direction of motion and inversely proportional to its mass ". This Newton's second law of motion describe the relationship between force and Acceleration.
[tex] \large{ \tt{☃ \: SOME \: EXAMPLES}} : [/tex]
A cricket player while catching a ball moves his hands backwards.A person jumping on a cemented floor is injured more than a person jumping on sandy floor.It is difficult to catch a cricket ball as compared to a tennis ball moving with a same velocity.It is easier to drag a stone than to kick it.✺ Don't Forget the lifestyle , You have promised to yourself.
ツ Hope I helped! ♡
☼ Have a wonderful day / evening ! ☃
# StayInAndExplore ! ☂
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A narrow slit is illuminated with light of wavelength 410 nm. If the central maximum extends to ±35.0°, how wide is the slit
Answer:
The wide of the slit is 0.715 μm.
Explanation:
We can use the single slit diffraction equation.
[tex]d\cdot sin(\theta)=\lambda[/tex]
Where:
d is the wide of the slitθ is the angle of the maximum central diffraction intensity (we use th epossitve value 35°)λ is the wavelengthWe just need to solve this equation for d.
[tex]d=\frac{\lambda}{sin(\theta)}[/tex]
[tex]d=\frac{410*10^{-9}}{sin(35)}[/tex]
[tex]d=7.15*10^{-7}\: m[/tex]
Therefore, the wide of the slit is 0.715 μm.
I hope it helps you!
What is resultant force
Answer:
resultant force is a overall force acting on a body
hope it helps.
Which position has the least amount of kinetic energy?
the position that has least kinetic energy is option D
does earths rotation on its axis And its movment through space time give us gravity?
Answer:
yes
Explanation:
moving earth makes us stand on ground
Answer:
the rotation of the earth can affect your weight but not gravity
POSSIBLE 1. Which of the following are examples of a physical reactions: (1) ice melting, (2) pencil breaking, (3) iron rusting, (4) wood burning? a. 1.4 b. 3,4 c. 2.3 d. 1,2
Answer:
D) 1 & 2
Explanation:
Ice melting can be refrozen and although the pencil breaks, it doesn't change the chemical formula of the pencil
please dont waste my time with those 'answer is in the file"
The force exerted by water and air on the skier is 50 Newtons (N) to the left. The force exerted by the boat on the skier is 40 Newtons (N) to the right. How will the unbalanced forces change the motion of the skier
[tex]\mathfrak{\huge{\orange{\underline{\underline{AnSwEr:-}}}}}[/tex]
Actually Welcome to the concept of Net force on a body.
We know that net force on a body is the force that is calculated from all direction and added , if there is any force remained at last, then the forces are unbalanced,
and if the net force on a body is Zero, then it is a balanced force,
here,
Force to left on skier = 50 N
Force to right on skier = 40 N
hence the net force = left force - right force
Net force = 50 - 40 ==> 10 N
hence the Net force is 10 N in the left direction of the skier.
If a 60 W light bulb, powered with 620,000 J of energy, in a bedside lamp is only 20 percent efficient in converting electrical energy into light energy, how many joules of light energy does this light bulb produce each time?
Answer:
720 Joules
Explanation:
Given: 60 W light bulb powered by 620,000 J of energy. 20 percent efficient in converting electrical energy into light energy
To find: how many joules of light energy does this light bulb produce each time?
Formula: [tex]E = \frac{hc}{A}[/tex]
Solution: The total amount of energy generated by the light bulb every minute is 3600 Joules. If the light bulb is only twenty (20) percent efficient in converting that energy to visible light energy, that would be twenty percent of the total.
E (Joules) = P (Watts) X t (seconds)
E = 60 W X 60 seconds
E = 3600 Joules of energy
20% of 3600 = 720 Joules
Therefore, it produces 720 joules of light each time.
use the kinetic theory of matter to explain thermal expansion in liquids
Any wave of any kind will change direction when it encounters an obstacle. This bending is called
Group of answer choices
resonance
the photoelectric effect
interference
diffraction
Answer:
diffraction is the correct answer
PLEASE HELP WILL GIVE BRAINLIEST
How can diversity within an ecosystem be compromised?
A.)by building structures on natural habitat areas
B.)by regulating human activity within an ecosystem
C.)by helping to maintain habitats that have been disturbed
D.)by leaving the ecosystem alone to fend for itself
How can the students determine if the sample is pure or a mixture?
A. Observe the shape of the sample.
B. Measure the mass of the sample.
C. Find the melting point of the sample.
D. Determine the volume of the sample.
What element is found the following nuclear reaction
Answer:
h
Explanation:
Help Me Please I’m Give You Brainiest
6H2O + 6CO2 → C6H12O6 + 6O2
6H2O + 6CO2 → C6H12O6 + 6O2It is photosynthesis.
If the reaction was opposite then it was cellular respiration.
C6H12O6 + 6O2 → 6H2O + 6CO2
Heat is the measurement of energy from all the particles that are in a substance.
Please select the best answer from the choices provided : T/F
Explanation:
the correct answer is (true) if am not mistaking incase am wrong sorry
HELP ME SHIFT TO MHA PLEASE, (I have aphantasia, so I cant visualize ) But I want to shift, so please help me :(
Answer:
1 + 3 = 7. X = 2 -9+7=8
Explanation:
Here,
Light of wavelength 505 nm passes through a single slit of width 4.32 x 10-5 m. At what angle does the first interference minimum (m = 1) occur?
Answer:
0.665
Explanation:
I did the work. Just plug everything in from the formula. Look at the lesson manual.
why thermos flask used
Answer:
Explanation:
A thermos helps prevent heat loss when the thermos is holding a hot substance and then helps prevent heat gain when the thermos is holding a cold substance. So a thermos can keep hot things hot and cold things cold.
A solid metal ball with a mass of 10.0 kg is placed on a smooth floor what force would be needed to accelerate the ball at a rate of 2.0 m/s2.
40 N
20 N
5 N
0.2 N
Charlotte is driving at 57.4 mi/h and receives a text message. She looks down at her phone and takes her eyes off the road for 4.96 s. How far has Charlotte traveled in feet during this time
Answer:
418.18 feet
Explanation:
Applying,
v = d/t.................. Equation 1
Where v = velocity, d = distance, t = time.
make d the subeject of the equation
d = vt............ Equation 2
From the question,
Given: v = 57.4 mi/h, t = 4.96 s = (4.96/3600) h = 1.38×10⁻³ h
Substitute these values into equation 2
d = (57.4×1.38×10⁻³)
d = 0.0792 mi
Converting from miles to feet
d = (0.0792×5280) feet
d = 418.18 feet
can someone please help me please I will mark brainlist and give you 5 stars pleasee
Answer:
If I did my calculations correctly then the answer is 11 but I may be weong
Answer:
it's 11
gkccgkxcgikvxxkg
Kelli has a mass of 42-kg, and she is sitting on a playground swing that hangs .4m above the ground. Her mom pulls the swing back and releases it when the seat is 1 meter above the ground. How fast is Kelli moving when the swing passes through its lowest point?
Answer:
3.4 m/s
Explanation:
may i be marked brainliest?
E(P)=m*g*h
=42*10*1
=420 J
E(P)=E(K)
E(K)=1/2MV^2
420=½*42*V^2
V^2=20
V=4.47
What is velocity ?"Velocity is essentially a vector quantity. It is the rate of change of distance. It is the rate of change of displacement. Speed of an object moving can never be negative. The velocity of a moving object can be zero. "
Know more about velocity here
https://brainly.com/question/18084516
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a uniform resistance wire is stretched till its length becomes 4 times what happens to the resistance
In chemical reactions, energy is absorbed or released in the form of:
a) Sound
b) Heat
c) Light
Answer:
Heat
Explanation:
Because chemical energy is stored, it is a form of potential energy. When a chemical reaction takes place, the stored chemical energy is released. Heat is often produced as a by-product of a chemical reaction – this is called an exothermic reaction.
Hope this helped.
Explanation:
Answer Should be B.
Its in Form of Heat.