The spring constant, k, for a 22cm spring is 50N/m. A force is used to stretch the spring and when it is measured again it is 32cm long. Work out the size of this force.

A top box labeled X contains 2 circles with plus signs and 2 circles with minus signs. A bottom box labeled Y contains 4 circles with minus signs and 8 circles with plus signs. An arrow Z runs from the bottom box to the top box.

Calculate the acceleration of the system that the coefficient of kinetic friction is 0.38. Predict which side of the ramp the system will move

What is the difference in time between a 3 second to 11 second interval

Change the speed 0.200 cm/s to units kilometers per year

3.113 A heat pump is under consideration for heating a research station located on Antarctica ice shelf. The interior of the station is to be kept at 15℃.

How long does it take a car to travel 450 km at 75 km/hr

A free-falling golf ball strikes the ground and exerts a force on it

What are the main activities involved in studying physics?

What is the energy that moves your arms and legs

A moving object can be in equilibrium. Explain.