A rock is dropped from a sea cliff, and the sound of it striking the ocean in heard 3.2. s later. If the speed of sound is 340m/s, how high is the cliff?

What type of heat transfer is happening when the sun warms your face

The revolving nosepiece of a compound microscope is used to: a. move the condenser up or down b. change the objective lens c. adjust the slide to move the object into view d. change eyepiece lenses

A flashlight beam strikes the surface of a pane of glass (n=1.56) at a 71° angle to the normal. What is the angle of refraction? Express your answer using two significant figures

Sound waves with frequencies higher than 20,000 Hz are referred to as subsonic waves. User: The pitch of a sound is most closely related to the a. frequency of vibrations. b. distance from the sound source. c. medium through which the sound travels.

Arden is making a pros and cons list about genetic engineering for a debate at school. Which part of her list is incorrect?

The force of attraction between two oppositely charged pith balls is 5.3 * 10-6 newtons. If the charge on the two objects is 6.7 * 10-9 coulombs, what is the distance between the two charges? (k = 9.0 * 109 newton·meter2/coulombs2)

To describe velocity you need to know?

Mohammed made a chart to list examples and nonexamples of projectile motion. Which best completes the chart? a - a football thrown in the airb - a kite flying on a stringc - a golf ball rolling off a table d - water spraying from a fountain

Halley's Comet appears around the sun about once every 76 years. It passes through the part of its orbit nearest the sun in just a few months but then moves out to great distances and takes more than half a century for the rest of its orbit.

In order to hike around a portion of Lake Allatoona, a tour guide determines that he must take his group 150 m east, 60 m north, then 75 m west.