3 years ago

In which material do sound waves travel

Physics

1 answer:

TEA [102]3 years ago

4 0

It would have to be a solid so the answer would be A.

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3) A 900N mountain climber scales a 100m cliff. How much work is done by the mountain climber?

Y_Kistochka [10]

Answer:

90 kJ

Explanation:

Work = force × distance

W = (900 N) (100 m)

W = 90,000 J

W = 90 kJ

4 0

3 years ago

Read 2 more answers

Reallly need help real quick

earnstyle [38]

If i am thanking right the answer wold be (b)

3 0

4 years ago

A 900 kg car runs into a 70 kg deer at 28 m/s. If the car transfers all of its momentum to the deer, how fast does the deer go f

Alex

Answer:

Mc = 900 Kg

Uc = 28 ms^-1

Md = 70 Kg

Ud = 0

We want Vd

Vc = Vd

This situation is elastic momentum

$m _{c}u _{c}+ m _{d}u _{d} = m _{c}v _{c} + m _ dv _{d} \\ (900 \times 28) + (70 \times 0) = (900 \times v _{d} ) + (70 \times v _{d}) \\ 25200 = (900 + 70)v _{d} \\ 25200 = 970v _{d} \\ v _{d} = \frac{25200}{970} \\ v _{d} = 26 \: m {s}^{ - 1}$

4 0

3 years ago

Objects with different masses have the same gravitational force acting

Bingel [31]

False!

It’s false. The answer is False.

5 0

3 years ago

Which of the following describes how the current in a circuit can be increased. Select all that apply.

andreyandreev [35.5K]

Answer:
Option B: Increase the voltage, while keeping the resistance constant.

Explanation:
Current is directly proportional to voltage, but indirectly proportional to resistance.

5 0

3 years ago