Compared to the sound of a car horn, the sound of a bird chirping has

A positive charge on an object is caused by: an excess of protons an excess of electrons a deficiency of protons a deficiency of electrons

Henry, whose mass is 95 kg, stands on a bathroom scale in an elevator. The scale reads 830 N for the first 3.0 s after the elevator starts moving, then 930 N for the next 3.0 s. What is the elevator's velocity 6.0 s after starting?

Two charged particles 1 m apart exert a 1-N force on each other. If the magnitude of each charge is doubled, the force on each particle will be a. 1 N. b. 4 N. c. 8 N. d. 2 N. e. none of the above

A ball is dropped from rest from top of a building. what force is responsible for the downward motion of the ball?

Would the sum of 5.7cm and 6.2 cm need to be rounded? Why or why not?

Strictly speaking, as more and more skyscrapers are built on the surface of the Earth, does the day tend to become longer or shorter? And strictly speaking, does the falling of autumn leaves tend to lengthen or shorten the 24-hour day?

For each description, choose the fault it describes. Fault types may be used more than once. A. Strike-Slip fault B. Reverse Fault C.

If a sugar has 11 oxygen atoms, how many hydrogen atoms does it contain?

Why do clouds tend to form around 3:00pm and 6:00am?

Why does sound travel faster under water?