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4 years ago

4. Atthe incident ray do not bent .

Physics

1 answer:

TiliK225 [7]4 years ago

4 0

Answer:

Is that a question or?

Explanation:

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Why do we see the color black?

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We see black colour in absence of light. Black colour absoorbs all the light, ( just opposite of white) and hence we do not see any colour. Black colour is also related to darkness.

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4 years ago

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3 years ago

A car moving with a speed of 35 m/s sees a child standing in the

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2100 N

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3 years ago

Which pair of quantities includes one quantity that increases as the other decreases during simple harmonic motion?

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So here we will have

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4 years ago

Read 2 more answers

A student uses a spring loaded launcher to launch a marble vertically in the air. The mass of the marble is

GarryVolchara [31]

Answer:

Part a)

When spring compressed by 2 cm

H = 1.47 m

Part b)

When spring is compressed by 4 cm

H = 5.94 m

Explanation:

Part a)

As we know that the spring is compressed and released

so here spring potential energy is converted into gravitational potential energy at its maximum height

So we will have

$\frac{1}{2}kx^2 = mg(H + x)$

$0.5(220)(0.02)^2 = 0.003(9.81)(H + 0.02)$

so we have

$H = 1.47 m$

Part b)

Similarly when spring is compressed by 4 cm

then we have

$\frac{1}{2}kx^2 = mg(H + x)$

$0.5(220)(0.04)^2 = 0.003(9.81)(H + 0.04)$

so we have

$H = 5.94 m$

8 0

4 years ago

4. Atthe incident ray do not bent .​

4. Atthe incident ray do not bent .