3 years ago

Which phrase best descirbes how scientists use the data they collect

Physics

1 answer:

goldenfox [79]3 years ago

3 0

Answer:

Please give the context of questions

Explanation:

It really helps people answer your questions. thanks

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A beam of light, initially travelling in the air, strikes water surface at an angle of 24.5° with the normal. If the speed of li

kykrilka [37]

Answer:

Explanation:

n = 3.00e8/2.22e8 = 1.35

1.00sin24.5 = 1.35sinθ

θ = 17.9°

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3 years ago

A hand pump is being used to inflate a bicycle tire that has a gauge pressure of 59.0 lb/in2. If the pump is a cylinder of lengt

bagirrra123 [75]

Answer:

∴The air cannot be made to flow in with the given pump at the given conditions.

Explanation:

Given:

gauge pressure of bicycle tyre, $P_g=59\ lb.in^{-2}$

length of cylinder of the pump, $l=17.4\ in$

area of the the cylinder of the pump, $a= 3\ in^2$

we have the density of air at STP, $\rho=4.4256\times 10^{-5}\ lb.in^{-2}$

The piston must be pushed more than the pressure inside the tyre:

$P_g=\rho\times V\div a$

$59=4.4256\times 10^{-5}\times a\times h\div a$

$h=13.33\times 10^5\ in$

∴The air cannot be made to flow in with the given pump at the given conditions.

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3 years ago

4. What happens to the total resistance of a<br> parallel circuit when another resistor is added?

Dahasolnce [82]

Answer:add resistance in the parallel circuit with the total resistance

Explanation:

the total resistance in the parallel circuit is also add resistance.

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2 years ago

A student drops an object from a fourth floor window the velocity of the objects is measured at 39.28m/s 3 seconds later what is

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Answer:

Acceleration due to gravity 9.8 m/s^2

Explanation:

When an object drops down towards earth from certain height than it comes down with an acceleration of 9.8 m/s^2 which is constant throughout the dropping until the falling objects hits the ground and coming to rest.

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3 years ago

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Zero, cause the positive and negative work cancel out :)

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4 years ago