What changes in the 1970s and 1980s made cars more energy efficient?

Part a determine the object's velocity at times t=0 s, 2 s, 4 s, 6 s, and 8 s. express your answer using two significant figures.

A long, straight wire carries a current of 5.20 AA. An electron is traveling in the vicinity of the wire. At the instant when the electron is 4.40 cmcm from the wire and traveling with a speed of 6.

When you paddle a canoe, you push the water backwards. What do you think will happen to the canoe? How is this related to the Third Law Of Motion?

A sailor pulls a boat horizontally along a dock for 10.0 m with an angled rope. He does 766 J of work and has a force of 100.0 N. What was the angle of the rope? O 40°

A (n) wave carries energy through matter.

Sound waves move through some liquid at a speed of 1500 m/s. If the wavelength is 3 m, what is the frequency of the wave?

What is the wavelength of radar waves with the frequency of 6.0 x 10 ^10 Hz?

a machine is required to produce and output force of 600 newtons. if the machine has a mechanical advantage of 6, what input force must be applied?

Small air bubbles rise slowly while big bubbles rise rapidly through the liquid. why?

Photosynthesis and respiration are important because they produce or breakdown food to release energy.