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What kind of lens is found in both a magnifying glass and a microscope?

You are sitting at the beach and want to determine the speed of a wave. You estimate the wavelength to be 3 m and find the frequency to be 5 Hz. What is the speed of the wave?

What forces make the car moves and stop?

What does it mean tha velocity is vector quantity

Quentin is a crime scene investigator. He believes a violent crime may have occurred in the bedroom of an apartment but he sees no blood. Which of the following chemicals reacts with iron produces a glowing blue color if blood is present

An antacid blank excess stomach acid.

A battleship simultaneously fires two shells toward two identical enemy ships. One shell hits ship A, which is close by, and the other hits ship B, which is farther away. The two shells are fired at the same speed.

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?