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matrenka [14]
3 years ago
13

Please help me...

Physics
1 answer:
Naddik [55]3 years ago
4 0

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State the objects in the universe that reflect light from stars
stepan [7]
Everything in the universe that is not a star reflects light from Stars. Otherwise you can't see it.
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4 years ago
Un ascensor sube con una velocidad constante de 2 m/s. Un niño que va en el ascensor lanza una piedra de 0.6 kg hacia arriba con
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Answer:

W = 7.5 J

Explanation:

W = KE

W = ½mv² = ½0.6(5²) = 7.5 J

Niño, piedra y ascensor están todos en el mismo marco de referencia inercial.

los 2 m / s no son importantes.

6 0
3 years ago
Consider a magnetic force acting on an electric charge in a uniform magnetic field. Which of the following statements are true?
NISA [10]

Explanation:

The magnetic force acting on the charged particle in magnetic field is given by :

F=qvB\ \sin\theta

Here,

q is the charged particle

v is the speed of particle

B is magnetic field

\theta is the angle between the v and B.

The correct statements for the magnetic force are :

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  • The direction of the magnetic force acting on a moving electric charge in a magnetic field is perpendicular to the direction of motion.
  • A magnetic force is exerted on an electric charge moving through a uniform magnetic field.
  • The direction of the magnetic force acting on a moving charge in a magnetic field is perpendicular to the direction of the magnetic field.
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Displacement vectors of 3 m and 5 m in the same direction combine to make a displacement vector that is _____ in magnitude.
Alona [7]
The correct answer is 8 meters. 
4 0
4 years ago
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Define limiting friction.​
Dafna11 [192]
The maximum friction that can be generated between two static surfaces in contact with each other. Once a force applied to the two surfaces exceeds the limiting friction, motion will occur. For two dry surfaces, the limiting friction is a product of the normal reaction force and the coefficient of limiting friction.
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3 years ago
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