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Neko [114]
3 years ago
12

Use tide and tidal range in the same sentence

Physics
1 answer:
erma4kov [3.2K]3 years ago
7 0
Tidal waves are caused by winds and high tides, and a tidal range changes.  there you go
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ASAP pls answer right I will mark brainiest . All I know is 4. Is A
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Explanation:

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3 years ago
PLEASE HELP
Anvisha [2.4K]

The speed of the rock at 20 m is 34.3 m/s

Explanation:

We can solve this problem by using the law of conservation of energy: the mechanical energy of the rock, sum of its potential energy + its kinetic energy) must be conserved in absence of air resistance. So we can write:

U_i +K_i = U_f + K_f

where :

U_i is the initial potential energy

K_i is the initial kinetic energy

U_f is the final potential energy

K_f is the final kinetic energy

The equation can also be rewritten as  follows:

mgh_i + \frac{1}{2}mu^2 = mgh_f + \frac{1}{2}mv^2

where:

m = 100 kg is the mass of the rock

g=9.8 m/s^2 is the acceleration of gravity

h_i = 80 is the initial height

u = 0 is the initial speed  (the rock starts at rest)

h_f = 20 m is the final height of the rock

v is the final speed when h = 20 m

And solving for v, we find:

v=\sqrt{2g(h_i-h_f)}=\sqrt{2(9.8)(80-20)}=34.3 m/s

Learn more about kinetic energy and potential energy here:

brainly.com/question/6536722

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brainly.com/question/10770261  

#LearnwithBrainly

5 0
3 years ago
Pressure is always measured in comparison to a standard pressure.<br> True<br> False
irakobra [83]

Answer:

true

Explanation:

8 0
3 years ago
In the equation for the gravitational force between two objects, which quantity must be squared?​
Trava [24]
The distance quantity/ measurement must be squared.
3 0
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A student was trying to find the relationship between mass and force. He placed four different masses on a table and pulled them
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Answer:

B. There is a direct proportion between the mass and force listed in the table.

Explanation:

From the table, the values of force increases with increase in the value of mass.

if 5kg=25 N

Finding the contant of proportionality k;

k=25/5=5

thus M=k(F)...........where M is mass in kg and F is force in newton, then

M=5F

This show that for every value of mass, we get the value of Force if we multiply by a contant k=5

This means there is a direct proportionality relation between mass and force in the table.

5 0
3 years ago
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