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maksim [4K]
1 year ago
13

If the splash is heard 1.07 seconds later, what was the initial speed of the rock? take the speed of sound in the air to be 343

m/s.
Physics
1 answer:
mihalych1998 [28]1 year ago
5 0

The initial speed of the rock was 9.00m deep.

<h3>What is initial speed?</h3>

Speed is a scalar quantity that measures the velocity's magnitude (meaning it only takes one number to describe it, unlike a vector which takes at least two, one for the magnitude and one for the direction). Initial speed is a common misnomer for initial velocity, although velocity is more accurate because it denotes the magnitude of a vector, which has direction. On the other hand, as speed is a scalar value, it does not convey direction. Initial speed is a common misnomer for initial velocity, although velocity is more accurate because it denotes the magnitude of a vector, which has direction. On the other hand, as speed is a scalar value, it does not convey direction.

Learn more about initial speed, visit

brainly.com/question/3809667

#SPJ4

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The tongue weight of a trailer should be what percent of the gross trailer weight rating
mario62 [17]

Answer:

between 10 and 15 percent

Explanation:

How to put your load

- First load the heavy

The safe trailer starts loading correctly. Uneven weight can affect steering, brakes and swing control.

In general, 60% of the weight of the load should be in the front half of the trailer and 40% in the rear half (unless the manufacturer indicates something different). When you place the load, you want it to be balanced from side to side, keeping the center of gravity near the ground and on the axle of the trailer.

-  Hold your load

After balancing the load, you must hold it in place. An untapped load can move when the vehicle is moving and cause trailer instability.

- Trailer weight

To avoid overloading the trailer, look for the recommended weight rating. It is located on the VIN plate in the trailer chassis, usually on the tongue. Confirm the Gross Vehicle Weight Classification (GVWR) before towing.

GVWR: is the total weight that the trailer can support, including its weight. You can also find this number as the Gross Trailer Weight (GTW). The weight of the tongue should be 10-15% of the GTW.

7 0
3 years ago
An object is moving at a constant speed along a straight line. Which of the following statements is not true? A. There must be a
Svetradugi [14.3K]

Answer:

False statement = There must be a non-zero net force acting on the object.  

Explanation:

An object is moving at a constant speed along a straight line. If the speed is constant then its velocity must be constant. We know that the rate of change of velocity is called acceleration of the object i.e.

a=\dfrac{dv}{dt}

a = 0

⇒ The acceleration of the object is zero.

The product of force and acceleration gives the magnitude of force acting on the object i.e.

F = m a = 0

⇒  The net force acting on the object must be zero.

So, the option (a) is not true. This is because the force acting on the object is zero. First option contradicts the fact.

6 0
3 years ago
Melanie watched the path a baseball followed after a pitcher threw it. She noticed that the ball traveled horizontally away from
Alex17521 [72]

Answer:gravity

Explanation:

7 0
3 years ago
Two forces are going in opposite directions each force is 9.
professor190 [17]

Answer:

The net force is zero.

Explanation:

Two opposing and equal forces cancel each other out, giving you a net force of zero.

7 0
3 years ago
To raise an arm upward, the muscle on one side of it contracts. What happens to the muscle on the opposite side of the arm?
enyata [817]

Answer:

It relaxes

Explanation:

I took the test I hope it helps

5 0
3 years ago
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