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GalinKa [24]
3 years ago
7

A physicist found that a force of 0.68 n was measured between two charged spheres. the distance between the spheres was 1.0 m. c

alculate the force between the two spheres when the distance was decreased to 0.50 m.
Physics
1 answer:
zubka84 [21]3 years ago
5 0
The force between two system is inversely proportional to the square the distance between them. The indirect proportion between these items may be expressed as,
                                           F = k / d²
where k is the constant proportionality. Substituting the known values, 
                                     0.68 N = k / (1 m)²     ; k = 0.68
For the second case, 
                                     F = 0.68 / (0.5 m)² = 2.72 N
Thus, the answer is 2.72 N.
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3 years ago
a delivery truck travels 18 blocks north, 10 blocks east, and 16 blocks south. what is the distance traveled and displacement. ​
AleksAgata [21]

1) Distance: 44 blocks

2) Displacement: 10.2 blocks at 11.3^{\circ} north of east

Explanation:

1)

- Distance is a scalar quantity that gives a measure of the total length of the path travelled by an object, regardless of its direction

- Displacement is a vector quantity which connects the initial position to the final position of motion of the object. Being a vector, it has both magnitude and direction: the magnitude is the shortest distance between initial and final position, while the direction goes from the initial to the final position.

In this problem, the motion is:

18 blocks north

10 blocks east

16 blocks south

So, the distance is the sum of the distances covered in each part:

distance = 18 + 10 + 16 = 44 blocks

2)

The displacement can be calculated by evaluating the initial and the final position. Along the north-south direction, the displacement is

d_y = 18 (n) - 16 (s) = 2 blocks north

Along the east-west direction,

d_x=10 blocks east)

So, the magnitude of the displacement is given by Pythagorean's theorem

d=\sqrt{d_x^2+d_y^2}=\sqrt{2^2+10^2}=10.2 blocks

And the direction is given by

\theta=tan^{-1}(\frac{d_y}{d_x})=tan^{-1}(\frac{2}{10})=11.3^{\circ}

measured as north of east.

Learn more about distance and displacement:

brainly.com/question/3969582

#LearnwithBrainly

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3 years ago
What is the big idea of mechanical equilibrium
aleksley [76]

Answer:

The body won't move or it will be moving with constant velocity

Explanation:

A body is said to be in mechanical equilibrium if the total force acting upon it is zero and the total torque acting on it is zero.[1] As the net force and torque on a body are zero, it will continue to move in a straight line with constant velocity and rotate with a constant angular velocity. If the velocity of a body in mechanical equilibrium is zero, then it will remain at rest.

This can be easily understood by interpreting the third law of Newton, the statement means that in every interaction, there is a pair of forces acting on the two interacting objects. The size of the forces on the first object equals the size of the force on the second object. The direction of the force on the first object is opposite to the direction of the force on the second object. Forces always come in pairs - equal and opposite action-reaction force pairs.

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