Physics, 17.09.2021 01:00 ArmyAllen00
If you lift an apple from the ground to some point above the ground, the gravitational potential energy in the system increases. This potential energy is stored in a. the apple. b. Earth. c. both the apple and Earth. d. the gravitational field between Earth and the apple. Please select the best answer from the choices provided
Answers: 3
Physics, 21.06.2019 17:40
Which is not a source of noise pollution? a)airplanes b)acid rain c)machines d)cars
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Physics, 21.06.2019 19:40
Abird sitting high in a tree is an example of what type of wnergy
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Physics, 22.06.2019 01:20
Your target variable is δf, the magnitude of the difference in frequency between the waves emitted from the sonar device and the waves received by the device after reflecting off the whale. write an expression for δf in terms of the relevant frequencies using the subscript notation introduced above.
Answers: 3
Physics, 22.06.2019 06:00
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
If you lift an apple from the ground to some point above the ground, the gravitational potential ene...
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