3 years ago

Use the "Law of Reflection" to describe why you cannot see your reflection in a piece of paper.

Physics

1 answer:

Anni [7]3 years ago

5 0

Answer:

it does not mirror the image

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What word is modified by an adjectival phrase in the following sentence? The savings to the project manager at NASA were substan

DedPeter [7]

I am pretty sure that the<span> word which is modified by an adjectival phrase in the following sentence is </span>being revealed by the second options from the box represented above : b. project. I choose this one as a correct answer because it is clear that this word is <span>modified by the phrase :"to the project manager". Hope it will help!</span>

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3 years ago

An object is realsed From rest . how far does it fall during the second second of fall?

Savatey [412]

Answer:

14.715 m

Explanation:

Assume that the acceleration due to gravity is 9.81 m/s^2 downwards, take downwards as positive

First second:

v = u + at

v = 9.81 m/s

Second second:

s = ut + (1/2)at^2

s = 9.81(1) + (1/2)(9.81)(1)^2

s = 14.715 m

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3 years ago

A train car with mass m1 = 515 kg is moving to the right with a speed of v1 = 7.5 m/s and collides with a second train car. The

Anna [14]

Answer:

For the first situation, we first need to find the mass of the second train car.

In order to do that, we apply the conservation of the amount of movement:

$515*7.5+m2*0=(m1+m2)*4.8$

and we have as a result:

m2 = 289.6875

For the second situation, also we will apply the conservation of the amount of movement:

$515*7.5-289.6875*6 = (515+289.6875)*V$

and we have as a result:

V = 2.64 (it is moving to the right)

6 0

3 years ago

Briefly describe the Rutherford atomic model

cricket20 [7]

Answer:

The Rutherford model was made by Ernest Rutherford, to describe a atom. That is a brief explanation

Explanation:

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3 years ago

If raindrops are falling vertically at 8.30 m/s, what angle from the vertical do they make for a person jogging at 2.07 m/s?

dmitriy555 [2]

Answer:

∆ = 14°

Explanation:

Let the angle be ∆

Opposite = 2.07 m/s

Adjacent = 8.3 m/s

Tan ∆ = opposite / adjacent

Tan ∆ = 2.07 / 8.3

Tan ∆ = 0.2494

∆ = ArcTan (0.2494)

∆ = 14°

The angle from vertical the raindrops make for a person jogging is 14°

4 0

3 years ago