An object has a kinetic energy of 77j and a mass of 52 kg, how fast is the object moving?

How many photons are absorbed during the dental x-ray?

If a car decelerates at a rate of 5.1 m/s, and its initial speed was 24 m/s. how long will it take the car to stop?

What are conduction, convection and radiation?

What property of a wave determines the pitch? What property of a wave determines the volume? Describe your reasoning and include the ways the simulation and tone generator influenced your thinking.

One attometer to nanometer

What is the energy source that heats a contracting protostar?

What unit is kg divided by m/s^2

If the energy stored in the fully charged battery is used to lift the battery with 100-percent efficiency, what height is attained? Assume that the acceleration due to gravity is 9.8 m/s2m/s2 and is constant with height

How does the mass of an astronaut change when she travels from earth to the moon? how does her weight change?

If an object has a mass of 20 grams and a volume of 40 cm3, what is its density in g/cm3?