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Alla [95]
3 years ago
9

A negative test charge experiences a force to the right as a result of an electric field. Which is the best conclusion to draw

Physics
1 answer:
Mashcka [7]3 years ago
4 0

Answer:

The correct option is (A).

Explanation:

The direction of electric force is in the direction of electric field. The electric force acting on a charged particle is given by :

F = qE, q is magnitude of charge

We have, a negative test charge experiences a force to the right as a result of an electric field. It would mean that the electric field points to the left because the force on a negative charge is opposite to the direction of the field.

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A child in a tree house uses a rope attached to a basket to lift a 24 N dog upward through a distance of 4.9 m into the house.
jenyasd209 [6]
<h3>Answer:</h3>

117.6 Joules

<h3>Explanation:</h3>

<u>We are given;</u>

  • Force of the dog is 24 N
  • Distance upward is 4.9 m

We are required to calculate the work done

  • Work done is the product of force and distance
  • That is; Work done = Force × distance
  • It is measured in Joules.

In this case;

Force applied is equivalent to the weight of the dog.

Work done = 24 N × 4.9 m

                  = 117.6 Joules

Hence, the work done in lifting the dog is 117.6 Joules

3 0
3 years ago
A refrigerator is being pulled up a ramp with a horizontal force P, which acts at the top corner. The refrigerator has a mass of
vaieri [72.5K]

Answer:

(a) P = 459.055 N.

(b) the refrigerator tips.

Explanation:

Given, the angle of ramp is 20°.

When the weight of refrigerator is resolved in directions parallel and perpendicular to ramp, 75×g×sin(20°) and 75×g×cos(20°).

⇒ normal contact force is 75×g×cos(20°).

⇒ frictional force is 0.3×75×g×cos(20°) = 207.414 N

so, total opposite force is 207.414 + 75×g×sin(20°) = 459.055 N.

so, the force needed is P = 459.055 N

And as the moment due to both opposite force and P force are in same direction the refrigerator tips rather than just sliding.

4 0
4 years ago
Question 23 of 32
marshall27 [118]
Do you still need help?!?!
7 0
3 years ago
Describe how energy is transferred from the sun to producers and then to consumers
Sphinxa [80]
Producers to primary consumers to secondary consumers to tertiary consumers to carnivores
7 0
3 years ago
Which two pieces of evidence most directky support the idea that all matter in the universe began as a sibgke point of energy.
Aleks04 [339]

Answer:

YOUR ANSWER IS GIVEN BELOW:

Explanation:

The abundance of helium in the universe and the redshift of light from the galaxies.

8 0
3 years ago
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