Which has greater kinetic energy: a bullet that has a mass of 0.05 kg travelling at 2500 m/s, or a lorry that has a mass of 4500 kg and is moving at 50 m/s?

When a sound source is moving away from an observer, the observer will hear a lower pitch. This is due to

A deer with a mass of 146kg is running head on toward you with a speed of 17 m/s. You are going north. Find the momentum of the deer.

Failures to arrive at an answer in a scientific investigation can still be useful because they show us what doesn't work. Answer a. True b. False

Which sampling method subdivides the population into categories sharing similar characteristics and then selects a sample from each subdivision? Choose the correct answer below. a. Stratified b. Convenience c. Systematic d. Cluster

How can a mountain change the amount of precipitation an area receives?

On very dry days, when you use a comb or a brush, your hair sometimes stands on the end and maybe even sticks to the comb or brush. Explain why this happens in terms of electric charge.

A large balloon is initially filled to a volume of 1.96 l at 318.44 k and a pressure of 2.89 atm. what volume of gas will the balloon contain at 1.77 atm and 336.33 k?

How to calculate kinetic energy? (physics/physical science)

What's the difference between the offspring of an asexual organism and a sexual organism

The contamination that results from the spread of bacteria from meat to vegetables is called