A chocolate wrapper is 6.7 cm long and 5.4 cm wide. Calculate its area up to

reasonable number of significant figures.

A device used to measure the atmospheric pressure is the barometer. true false

Your should be kept at the same distance during your

About 35% of the energy from the Sun that reaches our atmosphere is A) reflected. B) obstructed. C) absorbed by land. D) absorbed by oceans.

Which of the following is used in Sonata II's prepared piano? A. Small pieces of rubber B. Copper wire C. Coins D. Wooden blocks

Before electric current in power lines can be safe for your home, it must pass through a a. turbine. b. step-down transformer. c. step-up transformer. d. generator.

Examine the reactants of the incomplete double-displacement reaction. 2NaCl + H2SO4 → _[blank]_. What is the product of the double-displacement reaction?

A radio wave has a wavelength of 300 m. The wave moves with a speed of 3.0 * 108 m/s. What is the frequency of the radio wave? A. 1.0 * 106 Hz B. 1.0 * 10-5 Hz C. 1.0 * 10-6 Hz D. 1.0 * 105 Hz

What is the momentum of a 0.145 kg baseball traveling at 40.0 m/s

To analyze the motion of a body that is traveling along a curved path, to determine the body's acceleration, velocity, and position. A motorcyclist travels around a curved path that has a radius of 250 ft.

You walk with a velocity of 2 m/s north. You see a man approaching you, and from your frame of reference he has a speed of 3 m/s to the south.