A train is 240 meters long and travels 20 m/s. How long does

it take to cross a 360-meter long bridge?

S

A pulse is sent down a rope that is tied to a wall. On which side of the rope will the pulse reflected? A.) on the same side B.) on the opposite side C.) it will not be reflected D.) more information is needed to decide

During destructive interference, two waves moving through the same medium will

Use g = 9.8 m/s2. From the top of a cliff, a person throws a stone straight downward. The initial speed of the stone just after leaving the person's hand is 9.7 m/s.

6. What are the four chambers of the heart? A. atrium, artery, ventricle, vein B. artery, blood vessel, capillary, vein C. blood, carbon dioxide, oxygen, and plasma D. right atrium, left atrium, right ventricle, left ventricle

What is pseudoscience?

What is the frequency of a wave with a velocity of 21.2 m/s and a wavelength of 8.3m?

Positive ions have blank protons than electrons

What is the weight, in n, of an object with a mass of 200 kg at a location where g = 9.6 m/s2. round the final answer to the nearest whole number?

A 1.7 kg book is lying on a 0.77 m - high table. You pick it up and place it on a bookshelf 2.0 m above the floor. how much work does gravity do on the book?

What is the difference between diffusion and osmosis?