The atoms in a sample of carbon must contain nuclei with the same number of A) electrons. B) neutrons. C) nucleolus. Eliminate D) protons.

How did Galileo's observations of Jupiter and Venus support Copernicus's model?

A sound wave is passing by a student 250 times every second. What is the frequency of the sound wave? 25 s 1 second 250 Hz 1/250 Hz

1. why is experimentation so important to science

What is another thing without the anxiety that adults would experience

Two students spotted some white, eyeless crayfish in the darkness. Why are the crayfish eyeless? A. They have long legs, so they don't need eyes. B. They are white, so they don't need eyes. C.

Both gravitational potential energy and kinetic energy depend on

How much work is done when a 105 g tomato is lifted 19.2 m?

Suppose a body has a mass of 60 kilograms and a velocity of 2 meters per second upward. What is the linear momentum?

Reflection and abssorption prevent some

Why is it important to change only one experimental variable at a time in an experiment?