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.

5.3 * 1012 kg satellite is 1,800 m from another satellite that has a mass of 3.5 * 108 kg. What is the gravitational force between the satellites? 3.82 * 104 N 6.87 * 107 N 5.72 * 1014 N 1.03 * 1018 N

Which of the following decreases the dissolving rate of a solid in water?

1. If a 40 kg person is accelerating at 10 m/s2, then the force acting on him or her is 400 N A. true or B. false 2. How much force is needed to make a 60 kg object accelerate at a rate of 2.0 m/s2? A. 62 N B. 62 kg C. 120 N D. 120 kg 3.

A lunar lander is descending toward the moon's surface. Until the lander reaches the surface, its height above the surface is given by, y (t) equals b minus c t plus d t squared m, where b equals 800 m is the initial height above the surface?

A loop of wire lays flat on a horizontal surface in an area with uniform magnetic field directed vertically down. Magnetic field suddenly grows stronger. While magnetic field is changing, the induced current in the loop as viewed from above is: A.

A distance - time graph indicates that an object moves 100 m in 4 s and then remains at rest for 6s what is the average speed of the object

A scientist is conducting research to determine how much pressure a dam can withstand. Why are good observations important to his research?

What is the ratio of escape speed from earth to circular orbital speed? ignore air resistance.

What do you understand by resolution of vectors

A plant uses energy from the Sun to make food. What kind of energy transformation is this?