A light ray moving at a 54.3 deg
angle in water (n = 1.33) hits a
boundary with oil (n = 1...
Physics, 10.03.2020 11:10 ibrsayed6671
A light ray moving at a 54.3 deg
angle in water (n = 1.33) hits a
boundary with oil (n = 1.52). At
what angle is it refracted in the oil?
(Water n = 1.33, Air n = 1.00)
(Unit = deg)
Answers: 3
Physics, 21.06.2019 18:00
Aplane flies directly between two cities, a and b, which are separated by . from a to b, the plane flies into a headwind. on the return trip from b to a, the wind velocity is unchanged. the trip from b to a takes less than the trip from a to b. what is the airspeed of the plane, assuming it is the same in both directions
Answers: 1
Physics, 22.06.2019 02:20
22. the effect of threshold braking is to a cause skids. b. lock wheels. c. prevent locking of wheels. d. increase stopping distance.
Answers: 2
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
Mathematics, 25.02.2021 22:10
English, 25.02.2021 22:10
Mathematics, 25.02.2021 22:10
History, 25.02.2021 22:10
Mathematics, 25.02.2021 22:10
Mathematics, 25.02.2021 22:10
Mathematics, 25.02.2021 22:10
History, 25.02.2021 22:10
Mathematics, 25.02.2021 22:10