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denis23 [38]
3 years ago
5

What is the frequency of a rubber band that vibrates back and forth 50 times in 1 second

Physics
1 answer:
ch4aika [34]3 years ago
4 0

If it makes 50 complete back-and-forth wiggles in 1 second, then its frequency is <em>50 Hz</em>.

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An airplane flying horizontally at 130.0 m/s drops a crate of food from a height of 2750. m. How far in front of the target must
Airida [17]

Answer:

<em>The crate should be released 3,080 m in front of the target</em>

Explanation:

<u>Horizontal Launch </u>

When an object is thrown horizontally with a speed v from a height of h, it describes a curved path ruled by gravity until it hits the ground.

The range or maximum horizontal distance traveled by the object can be calculated as follows:

\displaystyle d=v\cdot\sqrt{\frac  {2h}{g}}

The airplane drops a crate horizontally from a height of h= 2,750 m when flying at v=130 m/s. The range or maximum horizontal distance the crate reaches is:

\displaystyle d=130\cdot\sqrt{\frac  {2*2,750}{9.8}}

Operating:

\displaystyle d=130\cdot\sqrt{561.2245}

d = 3,080 m

The crate should be released 3,080 m in front of the target

4 0
2 years ago
Convert the Metric measurements below.<br> 76km =<br> m
Novosadov [1.4K]

Answer:

76,000 meters

Explanation:

4 0
3 years ago
Read 2 more answers
How Do You Appreciate the role of spherical mirrors in daily life ?
marin [14]
I appreciate the role of spherical mirrors in daily life.  THey are used in corridors to see who comes form other sides from sideways.
THey are used in car drivers and motor cyclists,  to view who comes behind them.
they are used by dentists.
they are used in long terrestrial Telescopes.

5 0
3 years ago
Which of the following directly contributed to soil erosion on the Great Plains in the 1930s?
NISA [10]

Answer:

Farming  

Explanation:

There were three droughts in the 1930s.

Farmers had deep plowed the land and killed the native grasses that trapped soil and moisture.

During the droughts, the moisture evaporated, and the loose soil turned to dust.

4 0
3 years ago
5. If 100N effort is required to lift a load of 300N in a lever of 1m and distance between fulcrums to load is 30 cm then, calcu
pishuonlain [190]

effort distance =?

effort =100N

load =300N

lever =1m

load D =30cm

ma=?

vr=?

efficiency =?

we know that

effort distance =l ×ld

= 300×30

9000

ma= l ×e

= 100×300

= 30000

vr = ld ×ed

= 1×9000

=9000

efficiency =(ma÷vr)/100

(30000÷9000)×100

3.33×100

333

5 0
3 years ago
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