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Valentin [98]
3 years ago
9

After watching a video about submarines, Jamil wants to learn more about the ocean. which question could be answered through sci

entific investigation?
Physics
1 answer:
SOVA2 [1]3 years ago
5 0
<span>Submarines are equipped with water tanks called ballast tanks that fill up to submerge the vessel. Emptying the tanks and filling them with air causes the submarine to surface.</span>
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Your physics textbook is sliding to the right across the table draw the vectors starting at the black dot. the location and orie
liberstina [14]
You would take a black dot at the top right of the y axis and dray it to the the far right of your x axis. hope this helps have a nice day and God bless
6 0
3 years ago
An object is floating in equilibrium on the surface of a liquid. The object is then removed and placed in another container, fil
Anestetic [448]

Answer:

The fraction of its volume inside liquid  is increased .

Explanation:

According to principle pf floatation , an object floats on the surface of water

when the weight of  liquid displaced by it becomes equal to weight of the object . weight of the liquid depends upon the density of the liquid .

In the second case , when the body is dipped into liquid of lesser density , in order to balance the weight of body , more volume of liquid will be displaced so that weight of displaced liquid becomes equal to object's weight . So the body floats with greater depth inside liquid . The fraction of its volume inside liquid  is increased .

4 0
2 years ago
4- by eating food only will you get energy?​
Serga [27]

Answer:

yes

Explanation:

All parts of the body (muscles, brain, heart, and liver) need energy to work. This energy comes from the food we eat. Our bodies digest the food we eat by mixing it with fluids (acids and enzymes) in the stomach.

4 0
3 years ago
4-7 Please! This is about scientific experiments.
ladessa [460]
Number 4 is c ,  number 5 is a  ,  number 6 is d and 7 is a 
8 0
3 years ago
A cat is on a merry-go-round that completes 1 full rotation in 6 seconds. The cat sits at a radius of 8.4 metres from the centre
madam [21]

To solve this problem we will use the concepts related to the uniform circular movement from where we will obtain the speed of the object. From there we will go to the equilibrium equations so that the friction force must be equal to the centripetal force. We will clear the value of the coefficient of friction sought.

The velocity from the uniform circular motion can be described as

v = \frac{2 \pi r}{T}

Here,

r = Radius

T = Period

Replacing,

v = \frac{2\pi (8.4)}{6}

v =8.7964 m/s

From equilibrium to stay in the circle the friction force must be equivalent to the centripetal force, therefore

F_f = F_c

\mu N = \frac{mv^2}{r}

Here,

\mu = Coefficient of friction

N = Normal Force

m = mass

v = Velocity

r = Radius

The value of the Normal force is equal to the Weight, then

\mu(mg) = \frac{mv^2}{r}

Rearranging to find the coefficient of friction

\mu = \frac{v^2}{gr}

Replacing,

\mu = \frac{(8.7964)^2}{(9.8)(8.4)}

\mu =0.9399

Therefore the minimum coefficient of friction to prevent the cat from sliding off is  0.9399

6 0
2 years ago
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