Why are distant objects in the universe moving away from Earth? Because the light they emit is redshifted. Because Earth's gravity pushes them away Because the universe expanding Because of a supernova event

What happens to the kinetic energy when you change the mass?

Henry sets his keys on a wooden table. He then takes a powerful magnet and positions it below the table and the keys. He finds that he is able to drag the keys along the table by moving the magnet. This demonstrates that A.

A child is in danger of drowning in the Merimac river. The Merimac river has a current of 3.1 km/hr to the east. The child is 0.6 km from the shore and 2.5 km upstream from the dock. A rescue boat with speed 24.

What is the fate of the universe knowing that heat flow from hot to cold until there is equilibrium of temperature?

A sprinter had a mass of 80 kg and a kinetic energy of 4,000 J. What is the sprinters speed?

The driver of a car traveling at 32 m/s applies the brakes and undergoes a constant deceleration of 2.25 m/s^2.

You are going to develop some photographic film that involves a chemical reaction between the developer, which you will mix yourself, and a chemical on the surface of the film.

Would time travel mean that parallel universes would be created off our linear time sequence to ensure the universe doesn't collapse itself because of significant events being drastically changed in the way it shapes the universe?

What is the central core of hair

A star with the same mass of the sun has a newly discovered planet whose semi-major axis of 2.48 au and an eccentricity of 0.08. what is the aphelion distance of the new planet