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shutvik [7]
3 years ago
9

A scientist studies the effect of adding different amounts of salt on the boiling point of water. He places his results in the g

raph below. what are the independent and dependent variables in this experiment?
Physics
2 answers:
den301095 [7]3 years ago
5 0
The amounts are the independent boiling water is dependent

Phantasy [73]3 years ago
4 0

Answer: The amount of salt- independent variable

The boiling point of water- dependent variable

Explanation:

An independent variable can be manipulated manually in an experiment the result of this manipulation can be observed on the dependent variable. The dependent changes with respect to the independent variable.

In the given experiment the amount of salt is the independent variable as the amount of the salt can be changed or manipulated. The effect of such change can be observed on the dependent variable that is the boiling point of water.

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Which sequence shows electromagnetic waves arranged in a decreasing order of their wavelengths?
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Answer: Gamma rays, x-rays, ultraviolet rays, visible light, and infrared rays.

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Explain when a falling object is in free fall.
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There is no gravity
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To pull an old stump out of the ground, you and a friend tie two ropes to the stump. You pull on it with a force of 500 N to the
zhannawk [14.2K]

Answer:

C. less than 950 N.

Explanation:

Given that

Force in north direction F₁ = 500 N

Force in the northwest F₂ = 450 N

Lets take resultant force R

The angle between force = θ

θ = 45°

The resultant force R

R=\sqrt{F_1^2+F_2^2+2F_1F_2cos\theta}

R=\sqrt{500^2+450^2+2\times 450\times 500\times cos\theta}

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Therefore resultant force is less than 950 N.

C. less than 950 N

Note- When these two force will act in the same direction then the resultant force will be 950 N.

8 0
3 years ago
A bicyclist in the Tour de France crests a mountain pass as he moves at 18 km/h. At the bottom, 4.0 km farther, his speed is at
Allisa [31]

We are given:

v0 = initial velocity = 18 km/h

d = distance = 4 km

v = final velocity = 75 km/h

a =?

<span>
We can solve this problem by using the formula:</span>

v^2 = v0^2 + 2 a d

 

75^2 = 18^2 + 2 (a) * 4

5625 = 324 + 8a

<span>a = 662.625 km/h^2</span>

6 0
3 years ago
2.
anzhelika [568]

Answer:

44.72m/s

Explanation:

use th formula:vf²=vi²at

and then substitute the values

remember the units

8 0
2 years ago
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