What is the momentum of a dog of mass 20 kg that is running east with a speed of 3 m/s?

Simple machines can a. increase force only b. decrease force only c. increase or decrease force

Photons with the highest energy have the longest period

There are multiple tuning forks present in the room, and annie strikes one with a natural frequency of 400 hz. which of these other tuning forks will begin to vibrate through resonance and make the sound louder? a 200 hz tuning fork a 400 hz tuning fork a 800 hz tuning fork a 1600 hz tuning fork