Physics, 24.10.2019 23:43, genyjoannerubiera
Which of the following always occurs when a light ray reflects off a mirror? a. the speed of the light ray increases b. the direction of the light ray stays the same c. the frequency of the light ray decreases as it reflects and loses energy to the mirror d. the angle at which the light ray strikes the mirror equals the angle at which it reflects
Answers: 1
Physics, 22.06.2019 06:00, jagmeetcheema
The frequency of vibrations of a vibrating violin string is given by f = 1 2l t Ī where l is the length of the string, t is its tension, and Ī is its linear density.â (a) find the rate of change of the frequency with respect to the following. (i) the length (when t and Ī are constant) (ii) the tension (when l and Ī 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 â f is â (ii) when the tension is increased by turning a tuning peg df dt 0 and t is â f is â (iii) when the linear density is increased by switching to another string df dĪ 0 and Ī is â f is â
Answers: 3
Physics, 22.06.2019 15:00, ReeceLehua01
Mechanical energy is when the amount of kinetic and potential energies added together remains the same. conserved created lost
Answers: 1
Physics, 22.06.2019 17:30, Mariaisagon8446
Heterogeneous mixture with larger particles that never settle is
Answers: 2
Physics, 23.06.2019 08:30, ap03baller
Meaning of a nonzero y-intercept to a graph of reaction distance versus speed
Answers: 1
Which of the following always occurs when a light ray reflects off a mirror? a. the speed of the li...
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