The greater the disturbance of the medium, the higher the amplitude of the wave
Indicate whether the statement is true or false
TRUE
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Buoyancy: Salt water has greater density than fresh water. A boat floats in both fresh water and in salt water. Where is the buoyant force greater on the boat?
A. in salt water B. in fresh water C. The buoyant force is the same in both cases.
Solar energy
a. is a recent invention. b. has been used for a long time. c. has not yet been successfully developed. d. is indirectly the source of most of the energy we use.
A fixed charge of 10 nC sits at the origin. A charge of 9nC is places at (4m, 3m).
a) Find the electric potential energy of the 9 n charge b) Find the work required to move the 9 n charge from its initial position to (-6m, 8m).
The mass of a lamb that weights 110 N is about
A) 1 kg. B) 11 kg. C) 110 kg. D) 1100 kg. E) none of the above