Nan is rubbing a rock on the sidewalk. The rock gets smaller, and

dust is formed. Which type of change is happening?

O a change of state

O physical weathering

chemical weathering

O a new substance being formed

Suppose that 3.00 g of hydrogen is separated into electrons and protons. Suppose also that the protons are placed at the Earth's North Pole and the electrons are placed at the South Pole. What is the resulting compressional force on the Earth?

What circular motion occurs when an object is traveling with constant speed in a circle?

Why athelets pushes the earth backwards with his feets and hands just before the race starts

In what way have mass extinctions catalyzed evolutionary radiation? Mass extinction events cause mutations, increasing the genetic variability of populations.

Juan lives 100 M away from Bill what is Juan's average speed if he reaches bills home in 50 seconds

1. At one time, people thought that heat was a substance called

How are magnet'so magnetic force and magnetic field different

Ahmed saw all of these things as he walked to school this morning. Which one is an example of a force pushing downward toward the ground? A. A bird sat on a telephone wire. B. A woman moved her child from one place to another in a wagon. C.

What types of mediums are involved in the energy transfer

When two frequencies are added together, the beat frequency and the average frequency are an octave apart?