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zaharov [31]
3 years ago
10

At a stoplight, a truck traveling at 15 m/s passes a car as it starts from rest. The truck travels at constant velocity and the

car accelerates at 3 m/s^2. How much time does the car take to catch up to the truck?
Physics
1 answer:
Art [367]3 years ago
4 0
The time that the car take to catch up to truck would be :

1/2 ar^2  = vt

1/2 (3) t^2 = 15t

1.5  t^2  =  15t

t ^2    =   10s

Hope this helps
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If Light is travels from air into pure water with an incident angle of 30°. What is the angle of refraction?
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Explanation:

For air, n1 = 1.00003; for water, n2 = 1.3330

Given: θ2 = 30 degrees, then

θ1 = arcsin [(n2/n1) sin θ2]

= arcsin [(1.3330/1.0003) sin (40)]

= 58.93 degrees

Note that since, in this example, light is traveling from a medium of higher density (water; n2 = 1.3330) to a medium of lower density (air; n1 = 1.0003), then n2 > n1, and the angle of refraction (θ1) is larger than the angle of incidence (θ2), thus the light bends away from the normal (in this example, the vertical) as it leaves the water and enters the air.

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3 years ago
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Marizza181 [45]
The law of conservation of charge.

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Vikentia [17]

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Explanation: hope this helps :)

7 0
2 years ago
How do you calculate the fundamental frequency of a pipe?
ankoles [38]

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If it is an open ended pipe, there is an antinode at each end, meaning that the length of the pipe is equal to 1/2 <span>λ </span>. Manipulating the formula <span><span>v=fλ</span> </span> to solve for the fundamental frequency leaves us with <span><span>f=<span>v/<span>2L</span></span></span> </span> in an open ended pipe.

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Hatshy [7]
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3 0
3 years ago
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