Which of the following is an example of a contact force? A magnet repelling another magnet without touching it A ball falling the ground when it is dropped A child pushing a toy car Gravity keeping the earth in order around the sun

A kangaroo with an original velocity of 3 m/s accelerates at a rate of 1 m/s^2 for 2 seconds. What displacement will the kangaroo experience?

In a stringed musical instrument, the sound frequency of a particular string can be increased by A. tightening the string. B. increasing the string's thickness. C. loosening the string. D. lengthening the string.

The unit of electric potential or electromotive force is the ohm ampere franklin volt

1) For most substances, describe the relative densities of the phases.

A Star's Apparent magnitude is a measure of A:How Far Away it is B: Its size C:How bright it seem to us

Do you think an observer on another planet in the solar system might see eclipses

A. A vector is any element of a vector space. Is this statement true or false? A. True by the definition of a vector space B. False; not all vectors are elements of a vector space. C. False; a vector space is any element of a vector.

19 Which gas is the most abundant greenhouse gas? A. ozone B. chlorofluorocarbon C. carbon dioxide OD. methane E. water vapor Reset Next

The plates of a parallel-plate capacitor are maintained with a constant voltage by a battery as they are pushed together, without touching. How is the amount of charge on the plates affected during this process? a.

Which of the following creates a longitudinal wave? A. striking a gong B. turning on a flashlight C. shaking a rope up and down D. dropping a stone into a pond