Tala wants to create a sound echo. She can create the echo using a pane of glass or a carpet square. Which one does she choose? Explain.

A hotel elevator ascends 200m with maximum speed of 5m/s. its acceleration and deceleration both have a magnitude of 1.0m/s2. part a how far does the elevator move while accelerating to full speed from rest?

A planet is discovered orbiting around a star in the galaxy Andromeda at four times the distance from the star as Earth is from the Sun.

A solvent passes through a chromatography column in 3.0 minutes, but the solute requires 9.0 minutes. (a) What is the retention factor, k? (b) What fraction of the time does the solute spend in the mobile phase in the column?

You hear that a storm is moving 15 km/h north. You have been given the storm'

A bullet is fired horizontally with an initial velocity of 144.7 m/s from a tower 11 m high. if air resistance is negligible, what is the horizontal distance the bullet travels before hitting the ground?

What would most likely happen if the power lines in a petroleum power plant were broken? a. The petroleum would not burn. b. Steam would not be produced. c. Customers would not receive electricity. d. Energy would not be converted.

A (n) 1555.4 kg car is coasting along a level road at 40 m/s. A constant braking force is applied, such that the car is stopped in a distance of 55.6 m. What is the magnitude of the braking force? Answer in units of N.

A hot spot is an area where material from deep within the mantle rises and melts through the crust above it. True or False

Disabling asthma attacks can lead to restrictive school activity of approximately

What is the force behind mass movements