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expeople1 [14]
3 years ago
15

Some waves can only travel through matter. What is this matter called?

Physics
1 answer:
ANTONII [103]3 years ago
6 0
A water wave is an example of a mechanical wave. A wave that can travel only through matter is called a mechanical wave.
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Explain why a law is accepted as fact, but a theory is not
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Because, they have a strong argument regarding it and, the judges, so it makes sense of what the society thinks, and what they are representing.
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Angelina jumps off a stool. As she is falling, the Earth’s gravitational force on her is larger in magnitude than the gravitatio
valentinak56 [21]
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A batter hits two baseballs with the same force.One hits the ground near third base.The other is a home run out of the park.Wher
densk [106]

The formula for work is:

W = F * d  Where W is work, F is Force, and d is distance.

Without doing any math, it can be seen from the equation that work is directly proportional to the force applied and the distance it travels.  The homerun hit both traveled more distance and had a grater force applied to it in order to achieve this distance (assuming both baseballs weighed the same).  Based on this reasoning, it is valid to conclude that the baseball which was a homerun was the hit that accomplished more work.

6 0
3 years ago
A small object slides along the frictionless loop-the-loop with a diameter of 3 m. what minimum speed must it have at the top of
otez555 [7]
<span>3.834 m/s. In this problem we need to have a centripetal force that is at least as great as the gravitational attraction the object has. The equation for centripetal force is F = mv^2/r and the equation for gravitational attraction is F = ma Since m is the same in both cases, we can cancel it out and then set the equations equal to each other, so a = v^2/r Substitute the known values (radius is diameter/2) and solve for v 9.8 m/s^2 <= v^2/1.5 m 14.7 m^2/s^2 <= v^2 3.834057903 m/s <= v So the minimum velocity needed is 3.834 m/s.</span>
4 0
4 years ago
suzy stands on the talahatchee bridge kicking stones into the water below. if she kicks a stone with a horizontal velocity of 3.
zzz [600]
Yep.  I think I can.

Horizontal motion doesn't speed up or slow down.
 
                              distance                 =  (speed) x (time)

                                5.4 m                   = (3.5 m/s) x (time)
Divide each side
by  3.5 m/s:              (5.4 m) / (3.5 m/s)  =                 time

                               time  =  1.543 seconds   (rounded) .

That's how much time the stone took to fall from the bridge to the water.

Now we can go on to the vertical distance:
Do you remember this physics formula for falling distance ?

                    Distance  =  (1/2) (gravity) (time)²

                   Distance   =  (1/2) (9.8 m/s²) (1.543 sec)²

                                   =    (4.9 m/s²)    x    (2.38 sec²)

                                   =        11.7 meters .
5 0
3 years ago
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