A 0.25 kg object is experiencing a net force of 15 N while traveling in a circle at a velocity of 8.0 m/s. What is the radius of its motion?

Africtionless piston-cylinder contains 50 l of saturated liquid r-134a. the piston has a mass and an area resulting in an applied pressure of 500 kpa on the refrigerant. the refrigerant is now heated until its temperature rises to 70∘c. calculate the work (in kj) done during this process.

Considering only the earth's rotation, determine how much later the asteroid would have had to arrive to put the explosion above helsinki at longitude 25˚ e? this would have obliterated the city.

Glass has a hardness that is in the middle of the hardness scale. what is the hardness of glass?