Why are less massive stars thought to age more slowly than more massive stars have much less fuel?

A spaceship is moving in a straight line away from Earth at 0.80c, measured relative to Earth. It launches a missile that moves away from the spaceship in the forward direction at 0.60c, relative to the ship.

Two 3.3 g bullets are fired with speeds of 38.0 m/s and 83.7 m/s, respectively. a) What is the kinetic energy of the first bullet

if a 990 kg car is traveling on the road and Ff is 360 N to the east and the applied force is 1330 N to the west is the car displaying acceleration or in a constant motion choose the best answer to describe the cars motion A. at a constant motion B.

A 30 Newton object is placed into a bowl of water. If the 30 Newton object displaces 20 Newtons of water, what is the 'apparent weight' of the 30 Newton object in the water? (What force is required to lift it)

The speed at which an object falls and the acceleration at which it falls are always the same value True or False

Why would an object float in water, but sink in rubbing alcohol?

What happens to the volume of solids, liquids, and gases when they are heated. Devise your own chart for your answer.

Which chemical compounds absorb large amounts of the sun's energy in the atmosphere? Select one: a. Nitrogen compounds, water vapor, and carbon compounds b. Carbon dioxide, water vapor, and dust c. Methane, nitrogen compounds, and dust d.

As protostars continue to contract, their cores become hotter and more dense until what process begins ...

Emily jogs 3 laps at the track to warm up. She jogs at 5 mph. Then she runs 3 more laps at 7 mph. What is true about her average speed and her average velocity?