What is the speed of sound for a noise that travels 2 km in 5.8 s? There's answers for this already but they are two different ones.

5N to the left and 20 N to the right. If the couch has a mass of 45 Kg determine its acceleration A) 3m/s2 to the right B) 1.8 m/s2 to the right C) 2.2 m/s to the right D) 0.33 m/s2 to the right

An electron in the n = 6 level of the hydrogen atom relaxes to a lower energy level, emitting light of λ = 93.8 nm. find the principal level to which the electron relaxed.

Massive amounts of destructive energy are released when a nuclear fission bomb explodes. Where does that energy come from? A) Compounds are created, releasing chemical energy.

How can the creation of ice result in physical weathering?

A device for training astronauts and jet fighter pilots is designed to rotate the trainee in a horizontal circle of radius 11.0 m. if the force felt by the trainee is 7.

A horse canters away from its trainer in a straight line, moving 37 m away in 9.1 s. It then turns abruptly and gallops halfway back in 1.8 s. Calculate its average speed for the entire trip. Express your answer using two significant figures.

An early submersible craft for deep-sea exploration was raised and lowered by a cable from a ship. When the craft was stationary, the tension in the cable was 7000 N {/rm N}.

What are the components of earths life support system

A car is moving with a velocity (3.0 m/s) € x ˆ + (1.0 m/s) € y ˆ and 3.0 seconds later its velocity is (6.0 m/s) € x ˆ - (3.0 m/s) € y ˆ. What is the direction of the average acceleration of the car?

When water vapor condenses on the inside of a window, the window becomes