On a large scale, matter is mostly neutral. What is true of electric forces on a large scale?

a) They are exactly zero.

b) They are mostly negative.

c) They are close to zero.

d) They are mostly positive.

Find the escape velocity ve for an object of mass m that is initially at a distance r from the center of a planet of mass m. assume that r≥rplanet, the radius of the planet, and ignore air resistance.

Read the sentence. Even the social studies teacher herself could not find the answer to the tough question, In this sentence, "herself" is used as O a personal pronoun. O an object pronoun. O a reflexive pronoun. O an intensive pronoun

What is planned goal for the Europa clipper mission

The basic barometer can be used to measure the height of a building. If the barometric readings at the top and at the bottom of a building are 675 and 695 mm Hg, respectively, determine the height of the building.

A cell phone company relies on which kind of waves in order to provide service for its customers? ultraviolet waves infrared waves gamma rays microwaves

It is epistemically possible that a completed physics might include which of the following propositions? O Souls and other spiritual substances exist O God created the universe O Matter is unreal O All of the above

The weight of an object varies inversely with the second power of the distance from the center of Earth. The radius of Earth is approximately 4000 miles.

The chemical reaction of oxygen with other substances is called A. erosion. B. oxidation. C. exfoliation. D. acidification.

Find the net charge of a system consisting of 6.16*106 electrons and 7.68*106 protons. Express your answer using three significant figures. Qnet = 2.43*10-13 C

A motorist is driving at 20m/s when she sees that a traffic light 200m ahead has just turned red. She knows that this light stays red for 15s, and she wants to reach the light just as it turns green again. It takes her 1.