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fgiga [73]
2 years ago
14

Explain the energy changes involved when a positive charge moves because of a nearby, negatively charged object. use the terms e

lectrical potential energy, work, and kinetic energy in your answer.]
Physics
2 answers:
zaharov [31]2 years ago
7 0

Answer:

Work done by the electrostatic force will be positive

Kinetic energy of two charges will increase

Electrostatic potential energy will decrease

Explanation:

Electrostatic potential energy of system of two charges is given as

U = \frac{kq_1q_2}{r}

here we know that

q_1, q_2 = two charges between which interaction is required

r = distance between two charges

now if it is given that a positive charge is moved due to nearby negative charge

so since we know that negative charge will attracted towards to positive charge due to mutual attraction force between them

so here the force of attraction between them will do positive work to move the two charges near to each other

This work done will increase the kinetic energy of the system of two charges

Since there is no external force on the system of two charges so total mechanical energy will remain conserved and hence we can say if kinetic energy is increasing so electrostatic potential energy will decrease for this system

leva [86]2 years ago
3 0
The energy changes involved when a positive charge moves because of a nearby, negatively charged object because that is actually similar to when an object falls in a gravitational field, the potential energy of the object will turn in to a kinetic energy. thank you for this question.
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Jeff is a landscaping contractor and lifts a rock weighing 600 pounds by wedging a board under the rock. Jeff weighs 150 pounds
jonny [76]

Answer: 4

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Here, Jeff tried to lift a rock weighing 600 pounds by wedging board under the rock. Jeff who weighs 150 pounds uses all his weight to exert force on lever and lift rock.

Mechanical advantage, M.A.=\frac{weight\hspace{1mm}of\hspace{1 mm}rock}{weight\hspace{1mm}of\hspace{1 mm}Jeff}=\frac{600 pounds}{150 pounds}=4.

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6 0
2 years ago
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A small airplane with a wingspan of 18.0 m is flying due north at a speed of 63.6 m/s over a region where the vertical component
choli [55]

Answer:

(a) ε = 1373.8.

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Explanation:

(a) Finding the potential difference between the airplane wingtips.

Given the parameters

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speed of the plane in north direction is = 70.0m/s

magnetic field of the earth is = 1.20μT

The potential difference is given as:

ε = Blv

where ε = potential difference of wingtips

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ε = 1.2 x 18.0 x 63.6

ε  = 1373.8

(b) Which wingtip is at  higher potential?

The wingtip which is at higher potential.

5 0
3 years ago
A soccer player kicks a ball horizontally at 28 m/s from a bridge and hits the ground after 1.5 s. What is the range of the ball
Lelu [443]

Answer:

42

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range of ball = u×t

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2 years ago
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nadya68 [22]
We apply the following equation

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We find L.............> (T /2π)^2 = L/g

L = g*(T /2π)^2...........> L = 80.428 meters
5 0
3 years ago
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