A piano string of density 0.005 0 kg/m is under a tension of 1 350 N. Find the velocity with which a wave travels on the string
a. 260 m/s
b. 520 m/s
c. 1 040 m/s
d. 2 080 m/s
e. 4 160 m/s
B
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The linear website structure is appropriate for information presented in historical or chronological order.
Answer the following statement true (T) or false (F)
You push a heavy crate down a ramp at a constant velocity. Only four forces act on the crate. Which force does the greatest magnitude of work on the crate?
(a) The force of friction. (b) The force of gravity. (c) The normal force. (d) The force of you pushing. (e) The net force.
When a metal plate with a hole in it is cooled, the size of the hole becomes
1) smaller, 2) larger, 3) remains the same size, and when the plate is heated, the hole becomes 4) smaller. 5) larger. 6) remains the same size.
The proton-proton chain
a. combines two hydrogen nuclei to produce a single helium nucleus and energy. b. splits a helium nucleus to produce 4 hydrogen nuclei and energy. c. is the mechanism that increases the temperature between the photosphere and corona of the sun. d. is the interactions between protons in Earth's atmosphere that produces auroras. e. produces energy in the core of the sun in the form of gamma-rays, positrons, and neutrinos.