What do stars begin as

an 114 g mass is dropped from rest at a height of 64.1 cm above a spring of negligible mass. The mass then compresses the spring to a maximum displacement of 4.1081 cm. What is the spring force constant k of the spring

the gravitational pull of the moon is much less than the gravitational pull of earth, which two statements are true for an object with a mass of 20 kilograms that weighs 44 pounds on earth

Candle wax gradually loses its shape as it is heated. What type of solids is candle wax. Explain

Explain how a battery works. What are some possible materials you could use to make a battery for a circuit?

A 13 kg sled is moving at a speed of 3.0 m/s. at which of the following speedss will the sled have tace as mucb as the kinetic

In what way does varying the length of the string change the vibration

A 1200 kg car moving at 7.8 m/s collides with a stationary car of mass 1500 kg. if the two vehicles lock together, what is their combined velocity immediately after the collision?

Which have more kinetic energy a 100g ball, a 200g ball, or a 500g ball explain

An internal combustion engine uses fuel, of energy content 44.4 MJ/kg, at a rate of 5 kg/h. If the efficiency is 28%, determine the power output and the rate of heat rejection.

Fleas often live on dogs or cats and bite them for meal of blood. This can be harmful to the cat or dog that is bitten. What type of symbiotic relationship is that?