An Echo is an example of which type of wave interaction

An object travels a given distance at a speed of 5 m/s. If the object travels the same distance at a higher speed, how will the faster speed affect the time it takes the object to travel the distance?

During a race, a runner runs at a speed of 6 m/s. Four seconds later, she is running at a speed of 10 m/s. what is the runners acceleration? show your work.

A block M = 1.25 kg is pulled up along an inclined plane by a constant force F which is parallel to the incline as shown. The coefficient of kinetic friction between the block and the plane surface µk=0.35. The block starts from rest at the bottom.

The famous leaning tower of pisa doesn't topple over because its center of gravity is

A metric unit of volume

What are the steps that are important to take for your safety during an earthquake? a. stay away from walls and windows c. stay away from electrical and gas lines b. get under a desk or table d. all of the above

You have an open air column of length 1.40 m in air at 24.2 °C. What is the frequency of the third harmonic?

Why do we use average force while solving momentum problems? How is net force related to the momentum of the object?

If you had a positive 8 score on the sit-an-reach test you

65 million years ago there was a mass extinction that is best known for killing the dinosaurs. There was also a large deposit of dust that contained substances only found in asteroids.