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vekshin1
2 years ago
9

A copper block weighing 2 kg is dropped from a height of 20m. what is the rise in the temperature of the copper block after it h

its the floor. the specific heat capacity of copper is 400 j/(kgc )
Physics
1 answer:
finlep [7]2 years ago
4 0

The rise in temperature is 0.49°c

<h3>What is specific heat capacity?</h3>

The quantity of heat energy needed to raise a substance's temperature per unit of mass is known as specific heat capacity. A material's specific heat capacity is a physical characteristic. Since its value is inversely correlated with the size of the system under study, it is also an illustration of an extended feature.

<h3>what is law of conservation of energy?</h3>

Energy can only be transformed from one form to another. It cannot be created or destroyed

<h3>How will this question be solved?</h3>

From law of conservation of energy we know,

Potential energy of the block= cmΔT

mgh= cmΔT

m×9.8×20= 400×m×ΔT

196=400ΔT

ΔT=0.49°C

To know more about specific heat capacity visit:

brainly.com/question/2530523

#SPJ4

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Two 8V batteries are set up with four light bulbs in a complex circuit. Light bulb A has a resistance of 4.00 Ω, light bulb B ha
Neko [114]

Answer:

Total resistance : 12.4

Total Current : 0.645

Explanation:

4 0
3 years ago
how fast would a(n) 73 kgkg man need to run in order to have the same kinetic energy as an 8.0 gg bullet fired at 430 m/sm/s ?
Mars2501 [29]

Answer:

an 85 kg person run to equal the kinetic energy of an 8.0 g bullet fired at 410 m/s? The speed is, it might be argued,

v=4.0m/s

Explanation:

Typically, the mathematical formula for kinetic energy is as follows:

KE=\frac{1}{2} *m*v^{2}

K.E= kinetic energy

M=mass

V= speed

so,

KE=1/2*0.008*(420)*420

K.E=672.4J

 Therefore,

v*v=672.4/85

v*v=15.821

v=4.0m/s

Therefore

v=4.0m/s

What is Kinetic Energy?

The energy an object has as a result of motion is known as kinetic energy in physics. It is described as the effort required to move a mass-determined body from rest to the indicated velocity.

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8 0
1 year ago
At what water temperature will additional heat energy need to be added before the temperature will change again?
Katyanochek1 [597]
That would be 0 degrees Celsius aka the melting point of water.... If you look at the diagram I attached you notice that at 0 degrees Celsius it is flat, this is because much heat is needed at this point for water to rise to 1 degree... It is the same for the boiling point (100)

Hope this helps! (If correct, please rank as brainliest answer) :)
7 0
3 years ago
A radar transmits a signal towards an aeroplane. The velocity of the signal is 3.0 x 10^8 m/s. After 0.0036 s, the radar detects
avanturin [10]

The distance of the airplane from the radar will be 1.08×10⁶ m. Distance can refer to a physical length.

<h3>What is distance?</h3>

Distance is a numerical representation of the distance between two objects or locations.

The distance of the airplane from the radar is found by the formula;

Distance = velocity × time

Distance =  3.0 x 10^8 m/s× 0.0036 s,

Distance =  1.08×10⁶ m.

Hence, the distance of the airplane from the radar will be 1.08×10⁶ m.

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brainly.com/question/26711747

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6 0
3 years ago
Redshift means stars and galaxies are emitting a color that is shifting toward the red end of the color spectrum. this indicates
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Increasing ; moving away

This indicates the light's wavelengths are (increasing) and the star or galaxy is (moving away.)
7 0
3 years ago
Read 2 more answers
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