A 1kg coconut is in a tree 10 m above the ground a What is the coconut ma potential energy?

b The coconut falls out of the tree. How much kinetic energy does it have as it strikes the ground?

c Explain how the law of conversation of energy helped you answer question b

Athin, square metal plate measures 14 cm on each side and has emissivity of 0.60. the plate is heated to a temperature of 745°c. what is the rate at which the plate radiates energy ? the stefan-boltzmann constant is 5.67 × 10-8 w/(m2 ? k4). remember that the plate will radiate energy from both its top and bottom surfaces.

Who was the first scientist to measure speed as distance over time?

What is the angular momentum of the bar about the axle?