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Slav-nsk [51]
4 years ago
5

Why are force fields used to describe magnetic force? A. Magnetic force acts between two objects that are not touching. B. Magne

tic force is a form of gravity. C. Magnetic force acts between any two objects with mass. D. Magnetic force can only attract objects.tic force?
Physics
1 answer:
bonufazy [111]4 years ago
5 0

Answer:

The Answer is D. Magnetic force can only attract objects.

Explanation:

Magnetic forces can cause attraction or repulsion depending on the effect caused by the movement of particles.

<h2><em><u>Edit: Pleas correct me if i'm wrong!!!!</u></em></h2>
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A man is jogging at 3 m/s. If his mass is 85 kg, what is his kinetic energy?
Lina20 [59]

Answer:

This is the complete answer and step by step explanation.

Given:

a = 3m/s

m = 85 kg

Unknown:

The Kinetic energy of the man jogging

Formula and solution:

KE = 1/2 mv²

KE = 1/2(85 kg)(3 m/s)²

KE =  (42.5 kg)(9 m²/s²)

Final Answer:

KE = 382.5 kg.m²/s² or simplify as 382.5 J is the kinetic energy of man jogging

8 0
3 years ago
The planet Jupiter revolves around the Sun in a period of about 12 years (3.79 × 108 seconds). What is its mean distance from th
givi [52]

As we know that gravitational force of Sun will provide the centripetal force to all planets

so here we will have

F_g = F_c

\frac{GMm}{r^2} = m\omega^2 r

here we know that

\omega = \frac{2\pi}{T}

\omega = \frac{2\pi}{3.79 \times 10^8}

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now from above equation

\frac{GM}{r^2} = \omega^2 r

\frac{GM}{\omega^2} = r^3

\frac{(6.67 \times 10^{-11})(1.99\times 10^{30})}{(1.66\times 10^{-8})^2} = r^3

r = 7.8 \times 10^{11} m

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4 years ago
What's a Blackhole ?​
Vlad1618 [11]

Answer:

A black hole is a region of spacetime where gravity is so strong that nothing—no particles or even electromagnetic radiation such as light—can escape from it. The theory of general relativity predicts that a sufficiently compact mass can deform spacetime to form a black hole.

7 0
3 years ago
What is the magnitude of component of a vector in<br>right angle to itself, ?​
AlexFokin [52]

Yes, but it's a null vector .So,no vector can have a component at right angle to itself unless it is a zero vector.

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4 years ago
The toxic effects of water pollution are generally _______.
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<span>Immediate and long lasting because they pollute the water itself which is the most important commodity for humans. Dirty water gives us all types of diseases which are all long lasting and the body has a immediate reaction to the pollutants in the water. Drinking polluted water or even bathing in it can be very harmful to the human body.</span>
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