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Vsevolod [243]
3 years ago
10

Define newton's first law and provide an example​

Physics
2 answers:
il63 [147K]3 years ago
8 0

Answer:

Newton's first law states all objects have inertia, or resistance to change motion. Example: the car that breaks abruptly.

Lynna [10]3 years ago
6 0

Answer:

An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.

Explanation:

When an athlete tries to stop his career, it takes several meters to stop completely, due to the inertia produced.

When trying to push a car, at first it is very difficult, because, due to inertia, the car tends to remain still.  But once it is put into motion, the effort is much less to be done, since then inertia causes it to keep moving.

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PLZZZZ HELP QUICK . 30 points. Emma weighs 560 N, she has decided to stay in shape so she is working out every morning, This mor
Phantasy [73]

Force equals mass time acceleration. Weight is a force and it can replace force in the equation. The acceleration would be gravity, which is an acceleration.

1.)

Fw (weight) = m (mass) · g (gravity, 9.8 m/s²)

Fw = m * 9.81 m/s²

560N = m · 9.81 m/s²

m ≈ 57.08 kg

2.)

d = 350 meters

t = 65 seconds

velocity = d/t

velocity = 350 meters / 65 seconds

velocity ≈ 5.38 meters/sec

3.)

Force = 35N

Distance = 2 meters

Work = Force · Distance

Work = 35N · 2 meters

Work = 70 J

3 0
3 years ago
The magnetic force of a magnet is stronger at its poles than in the middle.<br> true or false
earnstyle [38]

The magnetic field of a bar magnet is strongest at either pole of the magnet. It is equally strong at the north pole when compared with the south pole. The force is weaker in the middle of the magnet and halfway between the pole and the center.

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3 years ago
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A radio signal has a frequency of 1.023 x 108 HZ. If the speed of the signal in air is 2.997 x 108m/s, what is the wavelength of
Sladkaya [172]

Answer:

2.93 m  (which agrees with answer "C" on the list)

Explanation:

Recall that the speed of the wave equals the product of the wave's length times its frequency. Therefore, the wavelength is going to be the quotient of the speed of the signal divided its frequency:

Wavelength = 2.997  10^8 / 1.023  10^8 =  2.93 m

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cricket20 [7]

The photography that shows a person using a type of wave technology, allows people to see very small objects clearly. D as it is a microscope

<h3>Why are wave technologies important?</h3>

Wave technologies are important because;

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  • Certain inventions use waves to enhance human senses like hearing, sight and touch.

Thus, the photography that shows a person using a type of wave technology, allows people to see very small objects clearly. D as it is a microscope.

Learn more about microscope here:

brainly.com/question/1444040

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