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Mrrafil [7]
3 years ago
14

On a guitar, the longest string vibrates slowly, and the shortest string vibrates very quickly. What conclusion can be made abou

t the sound that each string makes? A) The long string makes a loud sound and the short string makes a soft sound, because things that are longer make louder sounds. B) The long string makes a soft sound and the short string makes a loud sound, because things that are longer make softer sounds. C) The long string makes a high-pitched sound and the short string makes a low-pitched sound, because things that vibrate slowly have a higher pitch. D) The long string makes a low-pitched sound and the short string makes a high-pitched sound, because things that vibrate slowly have a lower pitch.
Physics
1 answer:
Nadya [2.5K]3 years ago
5 0

what's up? this answer is D. best of luck with your studies

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When opening a door, you push on it perpendicularly with a force of 57.0 n at a distance of 0.470 m from the hinges. what torque
TiliK225 [7]
<span>Torque = force * distance from axis of rotation. Multiply. If it's not perpendicular, you multiply that with the sine of the angle between the force and the perpendicular direction. T= 0.470*57*Sin 90 = 26.79 N</span>
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3 years ago
A bowling ball is launched off the top of a 240-foot tall building. The height of the bowling ball above the ground t seconds af
Vilka [71]

Answer:

V = (-32t +32) ft/s

The velocity of the bowling ball after t seconds is the time derivative of the position function s(t). To obtain the velocity from s(t) we simply differentiate s(t) with respect to t. That is

V = ds(t)/dt = -16×2t + 32×1 = -32t + 32.

When differentiating, you multiply the coefficient of each term in the equation with the power of the variable and then reduce the power by 1 just like above.

Explanation:

8 0
3 years ago
Two wheel gears are connected by a chain. The larger gear has a radius of 8 centimeters and the smaller gear has a radius of 3 c
dezoksy [38]

Answer:

B.The linear velocity of the gears is the same. The linear velocity is 432π centimeters per minute.

Explanation:

As we know that the small gear completes 24 revolutions in 20 seconds

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\omega = 2.4\pi rad/s

Now we know that the tangential speed of the chain is given as

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B.The linear velocity of the gears is the same. The linear velocity is 432π centimeters per minute.

8 0
4 years ago
An unpolarized beam of light with an intensity of 4000 W/m2 is incident on two ideal polarizing sheets. If the angle between the
erastova [34]

Answer:

The intensity is  I_2  =  1654 \ W/m^2

Explanation:

From the question we are told that

    The intensity of the unpolarized light is  I_o  =  4000 \ W/m^2

    The  angle between the ideal polarizing sheet is  \theta =  0.429 \ rad = 0.429 *  57.296 =  24.58^o

Generally the intensity of  light emerging from the first polarizer is mathematically represented as

               I_2  =  \frac{I_o}{2}

substituting values

               I_1  =  \frac{4000}{2}

                I_1  =  2000 \ W/m^2

Then the intensity of  incident light emerging from the second polarizer is mathematically represented by Malus law as

                 I_2  =  I_1  cos^2 (\theta )

substituting values

                I_2  = 2000  * [cos (24.58)]^2

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4 0
4 years ago
The north and south poles of a magnetic field produced by an electromagnet will switch when the direction of the changes.
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When the direction of the current changes
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