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Marizza181 [45]
3 years ago
6

What's the speed of a sound wave through water at 25 Celsius?

Physics
1 answer:
SVEN [57.7K]3 years ago
5 0

Answer:

B) 1500m/s

Explanation:

Ans is 1500m/s

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What acceleration will you give to a 27.8 kg
stich3 [128]

Answer:

2.72m/s²

Explanation:

Given parameters;

Mass of box  = 27.8kg

Force on box  = 75.7N

Unknown:

Acceleration  = ?

Solution:

Force is the product of mass and acceleration;

   Force  = mass x acceleration

Now insert the parameters and solve;

    75.7  = 27.8 x a

       a = \frac{75.7}{27.8}  = 2.72m/s²

3 0
3 years ago
The earth is rotating on its axis. It will continue to rotate unless acted upon by an outside force. This is an example of Newto
mojhsa [17]
It is an example of Newton’s first law.
7 0
3 years ago
Read 2 more answers
Tina and her puppy are tugging on a rope, each pulling on opposite ends.
anyanavicka [17]
Work is done when the ‘object moves in the same direction as the force’ an example being a man walking up a flight of stairs carrying a box of weight.

Work is not done when the direction of the applied force and the direction in which the object moves are PERPENDICULAR to each other. An example being A man carrying a load while walking, no work is done on the load in the upward direction as the load is only moving horizontally.

Thus the answer is whenever she pulls the puppy towards her

3 0
3 years ago
Gina rolled a ball down a hill.
satela [25.4K]

Answer:

80 Meters.

Explanation:

What I did was took how many seconds the ball traveled and multiply how fast the ball was going. I actually do a lot of these questions. :))

May I please have brainlyest??

3 0
4 years ago
A 8.5 kg brick is dropped onto a 6.5 kg toy truck, which is moving across a level floor at 0.50 m/s. With what velocity do the t
Kipish [7]

Answer:0.2167 m/s

Explanation:

Given

mass of brick M=8.5 kg

mass of toy truck m=6.5 kg

the velocity of truck u=0.5 m/s

Suppose v is the velocity after brick is landed on the truck

There is no external force acting so momentum is conserved

mu=(M+m)v

v=\dfrac{6.5}{15}\times 0.5\\v=0.2167\ m/s

3 0
3 years ago
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