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Ket [755]
3 years ago
8

True or False? Sound travels faster through metal than air​

Physics
2 answers:
nadezda [96]3 years ago
6 0

Answer:

Yes.

Explanation:

Sound waves travel through metal 17 times faster than air.

lisov135 [29]3 years ago
4 0
Answer true

Explanation Sound travels faster through metal
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How to calculate the slope of position time graph?
Mashcka [7]

Answer:

The slope of a position-time graph can be calculated as:

m=\frac{\Delta y}{\Delta x}

where

\Delta y is the increment in the y-variable

\Delta x is the increment in the x-variable

We can verify that the slope of this graph is actually equal to the velocity. In fact:

\Delta y corresponds to the change in position, so it is the displacement, \Delta s

\Delta x corresponds to the change in time \Delta t, so the time interval

Therefore the slope of the graph is equal to

m=\frac{\Delta s}{\Delta t}

which corresponds to the definition of velocity.

3 0
3 years ago
If the coolant in an air conditioner has a lower temperature than the air in a building, then ____.
solmaris [256]
Heat always flows from higher temperature to lower temperature. So option A. heat will flow from the air into the coolant is the correct answer.

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4 years ago
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IgorC [24]

Only ' A ' is always true.<em> (choice-1)</em>

' B ' is not true when you drop a red hot spoon into cold soup.

' C ' is not true when you drop a red hot marble into a cool swimming pool.

8 0
3 years ago
Which of the following is an example of an anaerobic exercise?
Nataly [62]
Sitting. Because its no move at all
7 0
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A race-car drives around a circular track of radius RRR. The race-car speeds around its first lap at linear speed v_iv i ​ v, st
Bond [772]

Answer and Explanation: <u>Centripetal</u> <u>Acceleration</u> is the change in velocity caused by a circular motion. It is calculated as:

a_{c}=\frac{v^{2}}{r}

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For its first lap:

a_{c}_{1}=\frac{v_{i}^{2}}{R}

After a while:

a_{c}_{2}=\frac{(4v_{i})^{2}}{R}

a_{c}_{2}=\frac{16v_{i}^{2}}{R}

Comparing accelerations:

\frac{a_{c}_{2}}{a_{c}_{1}}=\frac{16.v_{i}^{2}}{R}.\frac{R}{v_{i}^{2}}

\frac{a_{c}_{2}}{a_{c}_{1}}=\frac{16.v_{i}^{2}}{R}.\frac{R}{v_{i}^{2}}

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<u>With linear speed </u><u>4 times faster</u><u>, centripetal acceleration is </u><u>16 times greater.</u>

4 0
3 years ago
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