Explain conservation of momentum

Which object will be considered to be in free fall

If the sun were replaced by a 1-solar-mass black hole, what would be the gravitational pull of the black-hole "sun" on earth?

How many joules of heat would be required to heat 0.5 kg of aluminum by 2 kelvin

White objects absorb all wavelengths of light? true or false

A e B são dos blocos de massas 3,0 kg e 2,0 kg, respectivamente, que se movimentam juntos sobre uma superficie horizontal e perfeitamente lisa. F é uma força de intensidade 30 N aplicada ao bloco A.

Birds, squirrels, and chipmunks all living in the same tree, using the same resources, are an example of:

Does air resistence decrease with speed

In one area, the lowest angle of elevation of the sun in winter is 23 ° 18 '. Find the minimum distance, x, that a plant needing full sun can be placed from a fence 4.63 ft high.

A wave has a wavelength of 50 m and a speed of 200 m/s. What is the frequency of this wave in hertz?

A 75.0 kg person stands on a scale in an elevator. (a) What does the scale read (in N and in kg) when the elevator is at rest?