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AnnyKZ [126]
3 years ago
5

A polo player hits a ball with a mass of 0.42 kg with a force of 7.35 Newtons.

Physics
2 answers:
kobusy [5.1K]3 years ago
5 0

The answer is C.  The force of the mallet on the ball is equal in magnitude and opposite in direction to the force the ball exerted on the mallet.

Serga [27]3 years ago
4 0
Due to the law of conservation of momentum, the force exerted on the mallet is equal and opposite to the force exerted on the ball, so the answer is C.
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An electron experiences a magnetic force with a magnitude of 4.90×10−15 n when moving at an angle of 60.0 ∘ with respect to a ma
Leya [2.2K]
Missing questions: "find the speed of the electron".

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the magnetic force experienced by a charged particle in a magnetic field is given by
F=qvB \sin \theta
where
q is the particle charge
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\theta the angle between the directions of v and B.

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v= \frac{F}{qB \sin \theta}
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4 0
3 years ago
Santa doesn't want to push a 25.0 kg wooden box across a wooden floor with a uk of 0.20 at
scZoUnD [109]

Answer:

49 N

Explanation:

In order to move the box at constant speed, the acceleration of the box must be zero (a=0): this means, according to Newton's second law,

F = ma

that the net force acting on the box, F, must be zero as well.

Here there are two forces acting on the box in the horizontal direction while it is moving:

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- The frictional force, F_f

For an object moving on a flat surface, the frictional force is given by

F_f = \mu_k mg

where

\mu_k is the coefficient of friction

m is the mass of the box

g is the acceleration of gravity

So the equation of the forces becomes

F-\mu_k mg = 0

And substituting:

\mu_k = 0.20\\m = 25.0 kg\\g = 9.8 m/s^2

We find the force that must be applied by the guy:

F=\mu_k mg = (0.20)(25.0)(9.8)=49 N

6 0
3 years ago
The collision between two objects is an example of a___force.
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The collision between two objects is an example of a contact force
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