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kolbaska11 [484]
3 years ago
11

How long would it take for a sound impulse to travel through an aluminum rod 1,500 meters long?

Physics
2 answers:
Yuliya22 [10]3 years ago
6 0

The answer is:

0.29

............................................

NNADVOKAT [17]3 years ago
5 0
<span>I believe the answer is 0.29.</span>
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A person hits a 45-g golf ball. The ball comes down on a tree root and bounces
Verizon [17]

Answer:

Maximum height, h = 10 m          

Explanation:

It is given that,

Mass of golf ball, m = 45 g = 0.045 kg

The ball comes down on a tree root and bounces  straight up with an initial speed of 14.0 m/s.

We need to find the height the ball will rise  after the bounce. It is based on the conservation of energy such that,

\dfrac{1}{2}mv^2=mgh

h is maximum height raised by the ball

h=\dfrac{v^2}{2g}\\\\h=\dfrac{(14)^2}{2\times 9.8}\\\\h=10\ m

So, the ball will raised to a height of 10 meters.

5 0
3 years ago
A nearby star has a parallax of 0.2 arc seconds. What is its distance?
ruslelena [56]

Answer:

5 parsecs                          

https://quizlet.com/50937532/astronomy-chapter-17-flash-cards/

4 0
3 years ago
If an object is accelerating to the right , then net force on the object must be directed towards the right ! True Or False ?
vichka [17]
Not so fast.

I think you're using 'accelerating' to mean 'speeding up', but you really need
to be more careful with it. "Acceleration" means ANY change in speed OR
direction.

If an object's speed to the left is decreasing, or its speed to the right is
increasing, then the net force on the object must be directed towards
the right.

If an object is moving with constant speed in a circular path, then it's
constantly accelerating, because its direction is constantly changing.
The force on it is always directed towards the center of the circle, so
there's one point on the path where the force is directed straight to the right.
8 0
3 years ago
Read 2 more answers
The angle between magnetic north and the north to which a compass needle points is known as magnetic declination.
Romashka [77]

From among the choices provided, the better choice is the upper-case letter '<em>T </em>'.  That symbol can conveniently be used to represent the words "true" or "truth", which is exactly the reason that it is the better choice for a response, since the complicated statement at the beginning of the question is completely true in its every detail, nuance, jot and tittle.  

7 0
3 years ago
Which electromagnetic wave has the shortest wavelength? (A. Radio waves b. X-rays c.infrared rays or d. Visible light)
RSB [31]
X-rays have the shortest wavelength of any waves on that particular list.
Gamma ray waves are shorter than X-rays, but they're not on that list.
4 0
3 years ago
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