120MJ of heat are used to heat up a 1100kg component from 22oCelsius to 180oCelsius, in 1 hour, prior to heat treatment. If the specific heat capacity of the components material is 500J/kg, calculate the efficiency of the heating process.
Please could somone give me the equation that i need...
Please can you check and if i have gone wrong tell me?
Homework Statement
A mass of 150 kg is dropped onto a pile of mass 1,200kg from a height of 2.5m and drives it 7cm into the ground. calculate (a) the intial velocity of pile and driving weight immediately after impact, (b) the average...
ok thank you, here is my attempt not fully done but could you let me know if I am on the right track?..
1st i apply this formula to find the velocity
V= Squareroot (2xGravityxheight) = 7.004
Then i put in the knowns i have into the equation V²=U²+2as to find accelleration...
Homework Statement
A mass of 150 KG is dropped onto a pile of mass 1,200 kg from a height of 2.5m and drives it 7cm into the ground. calculate (a) the initial veocity of pile and driving weight immediately after impact, (b) the average resisting force excerted by the ground.
Homework...