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ASHA 777 [7]
4 years ago
13

Light would most likely be transmitted through A. A mirror B. A stone C. A leaf D. A window

Physics
2 answers:
ohaa [14]4 years ago
7 0
A window is the most transparent object from these, so that is the answer.
ratelena [41]4 years ago
4 0

The window would most likely be transmitted through.

A. Window

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A car's bumper is designed to withstand a 6.84 km/h (1.9-m/s) collision with an immovable object without damage to the body of t
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Answer:

859.07 N

Explanation:

u = Initial velocity = 1.9 m/s

v = Final velocity

s = Displacement = 0.165 m

a = Acceleration

m = Mass = 890 kg

Equation of motion

v^2-u^2=2as\\\Rightarrow a=\frac{v^2-u^2}{2s}\\\Rightarrow a=\frac{0^2-1.9^2}{2\times 0.165}\\\Rightarrow a=-10.93\ m/s^2

Force

F=ma\\\Rightarrow F=870\times -10.93\\\Rightarrow F=859.07\ N

The magnitude of the average force on the bumper is 859.07 N

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Why can water dissolve some ionic compounds, like NH4Cl, as well as some nonionic compounds, like methanol?
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A girl wants to count the steps of a moving escalator which is going up. If she counts 60 steps going up and 90 coming down. How
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Let

V the speed of the girl per step
v the speed of the escalator per step
L the length between ground and floor in number of steps

V*60+v*60=L => V+v=L/60
V*90-v*90=L => V-v=L/90

By adding the equations V+v=L/60 and V-v=L/90 we get:

2V=L(3+2)/180

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3 years ago
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