A 20 kg block is released from rest from the top of a ramp at point A at
a construction site as shown in the diagram. The ramp is inclined at an
angle of 30° to the horizontal and its top is at a height of 5 mabove the ground.
6.2 the kinetic frictional force between the 20kg block and the surface of the ramp is 30N. use energy principles to calculate the:
a. work done by the kinetic frictional force.
b. speed of the block at the point B at the bottom of the ramp
Answers: 1
Physics, 21.06.2019 23:30, southerntouch103
A175 g lump of molten lead at its melting point (327 c) is placed into 55.0 g of water at 20.0 c. the specific heat of lead is 130.j/kg c and the hf of lead is 20,400 j/kg. when the lead and the water have reached equilibrium, what is the temperature of the mixture?
Answers: 3
Physics, 22.06.2019 18:30, violetvinny
Which form of cell division creates the sperm and egg, resulting in half of the chromosomes as the other cells?
Answers: 1
A 20 kg block is released from rest from the top of a ramp at point A at
a construction site as sho...
Mathematics, 12.05.2021 02:30