An object with a mass of 100 g is in free fall. What is the speed of the object after it has fallen for 4 seconds?

A. 39 m/s

B. 9.8 m/s

C. 25 m/s

D. 96 m/s

Which factor affects the force of gravity between objects? Select two options. direction distance mass shape time

True or false a mixture of soil has the same chemical composition throughout?

Merton's strain theory would have the most trouble explaining which crime? assault fraud robbery burglary

A small plastic building brick (like a Lego piece) and a ceramic piggy bank filled with coins are displayed on the same shelf. Which has more potential energy? Why?

There is little sunlight at high latitudes during the winter, so few crops can grow even if temperatures are regulated. To address this problem, special lamps can be used in greenhouses. These lamps allow plants to grow during the winter months.

What holds the atoms together in a covalent bond

The sun is the centermost star of our solar system. a. True b. False

When an electron moves from a lower to a higher energy level

Which of the following is all matter made of? A. Hot particles B. Cold particles C. Constantly moving particles D. Nonmoving particles

Which of the following has longest wavelength, a) blue light b) red light c) x-rays d) gamma rays?