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Ira Lisetskai [31]
3 years ago
9

PLEASE HELP ASAP ITS FOR A TEST !!!!

Physics
2 answers:
damaskus [11]3 years ago
6 0

Answer:

D

Explanation:

A is stating something different

B is wrong because the atmosphere and location of the planet causes the average temperature to be around -81 F

C Mars is millions of miles behind earth

Which leaves D

Mnenie [13.5K]3 years ago
5 0
The correct answer is .... D
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A long. 1.0 kg rope hangs from a support that breaks, causing the rope to fall, if the pull exceeds 43 N. A student team has bui
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Answer:

6.8 m/s2

Explanation:

Let g = 9.8 m/s2. The total weight of both the rope and the mouse-robot is

W = Mg + mg = 1*9.8 + 2*9.8 = 29.4 N

For the rope to fails, the robot must act a force on the rope with an additional magnitude of 43 - 29.4 = 13.6 N. This force is generated by the robot itself when it's pulling itself up at an acceleration of

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4 years ago
Oxygen at 50 lbf/in.2, 200 F is in a piston/cylinder arrangement with a volume of 4 ft3. It is now compressed in a polytropic pr
Ksju [112]

Answer:

The value of heat transfer during the process Q = - 29.49 KJ

Explanation:

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P_{1} V_{1} = m R T_{1}

Put all the values in above equation we get

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⇒ m = 0.408 kg

Heat transfer in poly tropic process is given by

Q = \frac{\gamma - n}{( \gamma - 1)( n - 1)} [ {m R (T_{1} - T_{2}  ) ]

Put all the values in above formula we get

⇒ Q = \frac{1.4 - 1.2}{( 1.4 - 1)( 1.2 - 1)} [ {m R (T_{1} - T_{2}  ) ]

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3 0
4 years ago
A 2.00-kg object traveling east at 20.0 m/s collides with a 3.00-kg object traveling west at 10.0 m/s.
ELEN [110]
Momentum = mass x velocity

Before collision
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Total kinetic energy before
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