# Physics

posted by .

A 15 kg concrete block fell from a height of 20 meters and hits the ground below. If all of its original potential energy (PE) goes to the heat the block when it hits the ground, what is its change in terperature?

• Physics -

mgh=m*specificheatconcrete*deltaTemp

deltatemp= gh/specificheat

## Similar Questions

1. ### physics

A gun is fired vertically into a 1.55 kg block of wood at rest directly above it. If the bullet has a mass of 21.0 g and a speed of 190 m/s, how high will the block rise into the air after the bullet becomes embedded in it?
2. ### physics

A wood block falls from a shelf and hits the ground after 1.2 s. The mass of the block is .25kg. The block hits the floor and comes to rest in .1s. Determine the force applied by the floor
3. ### physics

a rock is dropped from a height of 15m above the ground. when it hits the ground, it leaves a hole 12cm deep. what is the speed of the rock when it hits the ground?
4. ### physics

a rock is dropped from a height of 15m above the ground. when it hits the ground, it leaves a hole 12cm deep. what is the speed of the rock when it hits the ground?
5. ### science

A 4kg block is sitting on the floor. (a) How much potential energy does it have?
6. ### PHYSICS(URGENT)

A particle has a mass of 5kg. It is held at a height of 3 metres above the ground. Find: a.Its potential energy b.Itâ€™s kinetic energy when is hits the ground c.The speed with which the particle hits the ground
7. ### Physics

A classmate throws a 1.1-kg book from a height of 1.3 m above the ground straight up into the air. The book reaches a maximum height of 4.0 m above the ground and begins to fall back. Assume that 1.3 m above the ground is the reference …
8. ### physics

A 7.4kg block starts 1.2m above the ground, at the top of a frictionless ramp. At the bottom of the ramp is a flat stretch of rough (μk = 0.15) ground 3.0m long. After sliding 3.0m, the ground becomes frictionless, and the block …
9. ### physics

3 kg block (block A) is released from rest at the top of a 20 m long frictionless ramp that is 5 m high. At the same time, an identical block (block B) is released next to the ramp so that it drops straight down the same 5 m. Find …
10. ### physics

A 3 kg block (block A) is released from rest at the top of a 20 m long frictionless ramp that is 5 m high. At the same time, an identical block (block B) is released next to the ramp so that it drops straight down the same 5 m. Find …

More Similar Questions