A sound wave travels across a 2,100-meter wide valley in 7.0 seconds.

Which one of newton's laws does a doll riding a dog represent

What is the formula for the law of universal gravitation? a. force = g * mass1 * mass2 / distance b. force = g * mass1 * mass2 * distance c. force = g * mass1 * mass2 / distance2 d. force = g * mass1 * mass2 * distance2?

Is there life on other planets?

Suppose you dropped the ball from a height of 2 meters and then watched it until it came to rest. What do you think would happen to the ball between the second it was dropped and the moment it comes to rest?

A thermometer measures the temperature of air and uses units like?

the half-life of carbon - 14 is 5730 years. What fraction of carbon-14 would remain after 11,460 years?

An object with a mass of 10.9 kg experiences a force of 18.53 N. What is the acceleration of the object? A. 2.2 m/s2 B. 1.7 m/s2 C. 16.83 m/s2 D. 1.3 m/s2

A proton, starting from rest, accelerates through a potential difference of 1.0 kV and then moves into a magnetic field of 0.040 T at a right angle to the field. What is the radius of the proton's resulting orbit

Which of the following terms are needed to completely describe speed? Check all that apply. A. Units B. Direction C. Number D. Mass

Drivers are able to see objects ahead of them because light travels through windshields.