Physics, 15.07.2019 16:30 QueenKy9576
When you drop a pebble from height h, it reaches the ground with kinetic energy k if there is no air resistance. from what height should you drop it so it will reach the ground with twice as much kinetic energy?
Answers: 1
Physics, 21.06.2019 16:30, yousifgorgees101
Which of the following would not be taken into consideration when describing the quality of a sound
Answers: 2
Physics, 22.06.2019 06:00, jagmeetcheema
The frequency of vibrations of a vibrating violin string is given by f = 1 2l t ρ where l is the length of the string, t is its tension, and ρ is its linear density.† (a) find the rate of change of the frequency with respect to the following. (i) the length (when t and ρ are constant) (ii) the tension (when l and ρ are constant) (iii) the linear density (when l and t are constant) (b) the pitch of a note (how high or low the note sounds) is determined by the frequency f. (the higher the frequency, the higher the pitch.) use the signs of the derivatives in part (a) to determine what happens to the pitch of a note for the following. (i) when the effective length of a string is decreased by placing a finger on the string so a shorter portion of the string vibrates df dl 0 and l is ⇒ f is ⇒ (ii) when the tension is increased by turning a tuning peg df dt 0 and t is ⇒ f is ⇒ (iii) when the linear density is increased by switching to another string df dρ 0 and ρ is ⇒ f is ⇒
Answers: 3
Physics, 22.06.2019 17:40, honestty21
Which component of the earth’s atmosphere is decreased due to photosynthesis?
Answers: 1
When you drop a pebble from height h, it reaches the ground with kinetic energy k if there is no air...
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