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Troyanec [42]
2 years ago
6

What is specific gravity​

Physics
1 answer:
Mrac [35]2 years ago
7 0

Answer:

It is the ratio of the density of a substance to the density of a given reference material.

Explanation:

<em>Specific gravity is also known as relative density.</em>

<u>To find the relative density of substance, you:</u>

  • Divide the density of substance measured
  • And divide that by the density of the reference

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A 160-N child sits on a light swing and is pulled back and held with a horizontal force of 100 N. The magnitude of the tension f
guajiro [1.7K]

Answer:

T = 190 N

Explanation:

When child is sitting on the swing then the weight of the child is vertically downwards

So it is

F_g = 160 N

now a force of 100 N is acting on the swing in horizontal direction

so it is given as

F_x = 100 N

now the net force is resultant force due to gravity and horizontal force

so it is given as

T = \sqrt{F_x^2 + F_g^2}

T = \sqrt{100^2 + 160^2}

T = 190 N

3 0
2 years ago
Concept Simulation 2.3 provides some background for this problem. A ball is thrown vertically upward, which is the positive dire
KATRIN_1 [288]

Answer:

39 m/s

Explanation:

Hi!

The equation of motion of the ball is:

y(t) = y_0 + v_{0y}t-(1/2)(9.8 m/s^2)t^2

Where y_0 is the initial horizontal position, which we will take as zero.

v_0y is the initial velocity and t is the time

To find the initial velocity we will set y(7.96s) = 0

0 = v_{0y} (7.96 s)-(4.9 m/s^2)(7.96 s)^2\\v_{0y} =(4.9 m/s^2) (7.96 s)\\v_{0y}=39.004 m/s

8 0
3 years ago
Find the momentum of a 25kg object traveling at a speed of 4m/s
solong [7]

Answer:

100Kg.m/s

Explanation:

From the question, we obtained the following information:

M= Mass = 25kg

V = Velocity = 4m/s

Momentum =?

Momentum = MV = 25x4= 100Kg.m/s

8 0
3 years ago
A rock falls off a cliff. How fast is the rock traveling vertically two seconds later?
Vikentia [17]
The rock it traveling really, really fast.
It is hard to exactly determine how fast bc u need the height of the cliff and how big the rock is.
Hope this helps and can I get brainliest answer!
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3 years ago
What is the vertical distance between a trough and a crest?
Sati [7]
I just did this last semester... I know this is wave height!!
5 0
3 years ago
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