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Blababa [14]
3 years ago
8

All objects on earth experience a force of gravity that pulls objects "downward" towards the center of the earth. The force of g

ravity acting on a person is 1000 N down and the force of air resistance is 215 N up. Find the net force.
Physics
1 answer:
Sergeu [11.5K]3 years ago
7 0

Answer:

The net force is 785 N

Explanation:

The net force = Force in one direction - force in the opposite direction

Here the Downward force due to gravity = 1000N

and the Upward force of air = 215 N

The net force = Downward force due to gravity -Upward force of air

Substituting the given values, we get -

The net force = 1000 -215  = 785 N

Hence, the net force is 785 N

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Answer:

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Explanation:

Since the pilot is traveling at a constant speed of 635 mph, the total distance traveled can be easily found as follows:

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There was a 10 degrees deviation, so the angle between the trajectory of both legs is 170 degrees.

The distance we need to find is that from the start of the first leg to the end of the second leg, those three distances form a triangle and since the side we're interested in is opposite to the 170 degrees angle, we can determine its length by the law of cosines:

d_{3}^{2} =d_{1}^{2} + d_{2}^{2} -2*d_{1}*d_{2}*cos(170)\\d_{3}^{2} =952.5^{2} + 1270^{2} -2*952.5*1270*cos(170)\\d_{3}=2214.22mi

The pilot is 2214.22 miles from her starting position

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Which of the following statements are true?
Tems11 [23]

Answer:

1) A time-varying magnetic field will produce an electric field.

4) A time-varying electric field will produce a magnetic field.

Explanation:

1) A time-varying magnetic field will produce an electric field.

TRUE

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E = \frac{r}{2}\frac{dB}{dt}

2) Time-varying electric and magnetic fields can propagate through space only if there is no matter in their path.

FALSE

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