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dedylja [7]
3 years ago
8

10. Scientists created models that show a rocky asteroid crashing into a moon (less mass) a

Physics
2 answers:
prohojiy [21]3 years ago
6 0

Answer:

Answer is C

Explanation:

jolli1 [7]3 years ago
5 0

Answer:

The diagram doesn’t tell you anything about the force on the asteroid. It only gives information about the force on the planet and the moon.

Explanation:

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An ideal gas is compressed at constant pressure p=1500 Pa from a volume Vi=0.4 m3 to Vf=0.25 m3. At the same time, heat is trans
Anon25 [30]

To solve this problem we will apply the first law of thermodynamics and we will make a balance between the heat transferred, its internal energy and the total work. Recall that for gases the definition of work can be expressed in terms of its pressure and volume. Let's start

dQ = dU +dW

Here,

dU = Internal Energy

dW = Work

But internal energy is unchanged, then

dQ = dW

dQ = PdV

Where

dV= Change in Volume

P = Pressure

Finally, the expression of the heat transferred can be expressed in terms of pressure and volume, so it would end up becoming

dQ = p(v_i-v_f)

Replacing,

dQ = (1500)(0.4-0.25)

dQ = 225J

Therefore the correct answer is B.

3 0
4 years ago
The density of mercury is 13.546 g/cm3 . Calculate the pressure exerted by a column of mercury 76 cm high. Give your answer in P
Ainat [17]

Answer:

The required solution is 100890 Pa and 14.3lb/in²

Explanation:

See attached image

8 0
3 years ago
Read 2 more answers
Which statement did John Dalton make about atoms?
Roman55 [17]

Answer:

B). the atom is made up of smaller particles

8 0
3 years ago
Read 2 more answers
A pulley system has an efficiency of 87.5 percent.
Gelneren [198K]

Answer:

work done on desk = m g h = 105 * 9.81 * 2.46 = 2534 Joules

Explanation:

so work in = 2534 / 0.875 = 2896 Joules

that is your 648 times distance your hand moved holding the rope

2896 = 648 * x

4.47 meters

I think maybe a typo, 648 N is too big, maybe 64.8 ? Any block and tackle system does better than that.

7 0
3 years ago
How long can a tow rope or chain be?<br> 1. 20 feet 2. 15 feet<br> 3. 5 feet<br> 4. 10 feet
Serga [27]

Answer:

"For towing, a tow chain should be of a length that keeps both vehicles within the maximum 4.5 meter distance, also  tow chains an be any length 20 foot chains are often chosen"  

Explanation:

-  https://letstowthat.com

Also Quick note the feet of tow rope or chain varies on the situation but most longest or 20 feet.  

3 0
3 years ago
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