A 50 kg car is pushed so that it speeds up from 20 m/s to 50 m/s in 3 seconds. What is the force acting on the car?

A

500 N

B

0.2 N

C

10 N

What do geologists use to find absolute rock and fossil ages

The energy shown in the photograph is being created using A) fossil fuels. B) nuclear Power. C) a renewable resource. D) a nonrenewable resource.

What is the wavelength of a sound moving at 340 m/s with a frequency of 256HZ?

What is the acceleration of a bowling ball that starts at rest and moves 300m down the gutter in 22.4 sec

The emf of a battery is equal to its terminal potential difference A) under all conditions B) only when the battery is being charged C) only when a large current is in the battery D) only when there is no current in the battery E) under no

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