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vodomira [7]
3 years ago
12

As the skydiver falls to Earth, she experiences positive acceleration due to

Physics
2 answers:
vaieri [72.5K]3 years ago
7 0
It is gravity. As a sky diver falls (ignoring air resistance for now) he increases in acceleration due to gravity, or 9.81m/s^2 (Earth's gravitational acceleration). Inertia is, by definition, <span>a property of matter by which it continues in its existing state of rest or uniform motion in a straight line, unless that state is changed by an external force (credit to Google). However, if the sky diver has some kind of webbing on his suit, a drag force opposite to gravitational weight cancels it, and it moves at a constant drag velocity.

Sorry I got carried away... physicist...

It is gravity. Hope this helps!</span>
n200080 [17]3 years ago
4 0

Explanation :

When an object moves under the action of gravity. Then the object is said to be moving under free fall.

We know that the acceleration due to gravity is denoted by g and it is equal to 9.8\ m/s^2.

If the body is accelerating towards the gravity the value of g is positive while when it is accelerating against the gravity it is negative.

As the skydiver falls to Earth, she experiences positive acceleration due to gravity.

So, the correct option is (a) gravity.

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A car travels at a speed of 40 m/s for 29.0 s;<br>what is the distance traveled by the car?
lianna [129]

Answer: 1160 m

Explanation:

Speed = distance / time. Plug in 40 m/s for speed and 29 s for time in order to get the distance, 1160 m.

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antiseptic1488 [7]
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The bus is heading southwest at 56 miles per hour is it veloctiy or speed
Anvisha [2.4K]

Answer:

Its velocity

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Velocity is speed with a direction.

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3 years ago
An insulated tank contains 50 kg of water, which is stirred by a paddle wheel at 300 rpm while transmitting a torque of 0.1 kN-m
kenny6666 [7]

Answer:

the rate of heat transfer after the system achieves steady state is -3.36 kW

Explanation:

Given the data in the question;

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V = 110 V

I = 2 A

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Now, work supplied by paddle wheel W₂ is;

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W = 0.22 + 3.14

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Hence total work done on the system is 3.36 kW.

At steady state, the properties of the system does not change so the heat transfer will be 3.36 KW.

The heat will be rejected by the system so the sign of heat will be negative.

i.e Q = -3.36 kW

Therefore,  the rate of heat transfer after the system achieves steady state is -3.36 kW

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Greenhouse gases are the main cause of global warming.  Carbon dioxide, methane oxides of nitrogen and sulphur are the green house gases.

Fossil fuels are rich in hydrocarbons and they release these gases when  burned. Mainly methane and other hydrocarbon gases intensely absorbs the temperature which is radiating away from the earth and thus the heat is trapped inside.

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7 0
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