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3 years ago

As the train in the image moves to the right how does the train horn sound to person a?

Physics

2 answers:

Basile [38]3 years ago

5 0

Answer:

Explanation:

It is D because person A is moving with the train, so they wouldn't experience any pitch change relating to the train's movement.

liraira [26]3 years ago

5 0

It sounds normal to people A and B. They're moving with the train, so the horn ON the train isn't moving toward them or away from them.

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3 years ago

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3 years ago

One strategy in a snowball fight is to throw a snowball at a high angle over level ground. While your opponent is watching the f

Andreas93 [3]

Answer:

Part a)

$\theta_2 = 15 degree$

Part b)

$\Delta t = 2.88 s$

Explanation:

Part a)

In order to have same range for same initial speed we can say

$R_1 = R_2$

$\frac{v^2 sin2\theta_1}{g} = \frac{v^2 sin2\theta_2}{g}$

so after comparing above we will have

$\theta_1 = 90 - \theta$

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$75 = 90 - \theta_2$

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Part b)

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$T_1 = \frac{2vsin\theta}{g}$

$T_1 = \frac{2(20)sin75}{9.81}$

$T_1 = 3.94 s$

Now for other angle of projection time is given as

$T_2 = \frac{2(20)sin15}{9.81}$

$T_2 = 1.05 s$

So here the time lag between two is given as

$\Delta t = T_1 - T_2$

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3 years ago