Is what happening in the air or the atmosphere at one time in one place

By scratching a mineral with various substances, scientists are able to determine the mineral's

What is an important trait or skill a scientist must have

A ski starts from rest and slides down a 22 incline 75 m long. if the coefficient of friction is 0.090, what is the ski's speed at the base of the incline?

Deondre locates a beach with several sea caves. Which of the following best describes what caused the caves to form? The collapse of a sea stack created the caves. The caves were caused by erosion from waves.

State two ways of velocity

An arrow is shot upward on mars from ground level with a velocity of 60 meters per second. Its height (in meters) after t seconds is given by 2 s (t) = 60t - 1.9t^2.

What are (a) the lowest frequency, (b) the second lowest frequency, (c) the third lowest frequency of transverse vibrations on a wire that is 10.0m long, has a mass of 100g, and is stretched under tension of 250 N?

Why is a rock salt crystal likely to shatter when struck

Find the speed required to throw a ball straight up and have it return 6 seconds later. neglect air resistance. how high does the ball go?

Do all electromagnetic waves travel at the speed of light, carry energy, and travel through a vacuum?