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vesna_86 [32]
3 years ago
14

Examine the scenario.

Physics
2 answers:
Ksju [112]3 years ago
8 0

The answer is "A magnetic field influences the motion of charged particles. The negatively-charged particles will experience a force acting against their motion, so the negatively-charged particles would slow down and stop moving."

This is because for example;

Have you ever seen a magnet? If so, you would experience the same scienario as above.

aniked [119]3 years ago
5 0

Answer:

option (c)

Explanation:

According to the Fleming's left hand rule, if we spread out thumb, fore finger and middle finger of our left hand mutually perpendicular to each other, then thumb represents the direction of force, fore finger represents the direction of magnetic field and the middle finger represents the direction of current.

According to the question, positive charge particle moves in left wards direction, i.e., current is flowing towards left, the force is acting upwards, so the direction of magnetic field is in perpendicular outwards to the plane of paper.

When a negatively charged particle moves towards left , then the direction of force is downwards.

Thus, the magnetic field influences the motion of charged particles. The negatively-charged particles will experience a force downward because positive and negative particles would experience forces in opposite directions.

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What is the frequency of an ocean wave that is traveling at a speed of 45 m/s if it has a wavelength of 3 meters.
V125BC [204]

Answer:

The frequency of an ocean wave is 15 Hz.  

Explanation:

We are given with, the speed of an ocean wave is 45 m/s. Its wavelength is 3 m

It is required to find the frequency of an ocean wave.

The speed of a wave is given in terms of frequency and wavelength as :

v=f\lambda,

f = frequency of ocean wave

f=\dfrac{v}{\lambda}\\\\f=\dfrac{45}{3}\\\\f=15\ Hz

So, the frequency of an ocean wave is 15 Hz.

4 0
3 years ago
Actual time which is measured in years is aslo known as
pav-90 [236]
Decades. 10 years is a decade
3 0
4 years ago
Two exactly similar wire of steel and copper are stretched by equal force.if the total elongation is 10cm.find how much each wir
antiseptic1488 [7]

Answer:

The copper wire stretches 6.25 cm and the steel wire stretches 3.75 cm.

Explanation:

Young's modulus is defined as:

E = stress / strain

E = (F / A) / (dL / L)

E = (F L) / (A dL)

Solving for dL:

dL = (F L) / (A E)

The wires have the same force, length, and cross-sectional area.  So:

dL₁ + dL₂ = (FL/A) (1/E₁ + 1/E₂)

Given that dL₁ + dL₂ = 0.10 m, E₁ = 20×10¹⁰ N/m², and E₂ = 12×10¹⁰ N/m²:

0.10 = (FL/A) (1/(20×10¹⁰) + 1/(12×10¹⁰))

FL/A = 0.75×10¹⁰ N/m

Solving for dL₁ and dL₂:

dL₁ = (FL/A) / E₁

dL₁ = (0.75×10¹⁰ N/m) / (20×10¹⁰ N/m²)

dL₁ = 0.0375 m

dL₂ = (FL/A) / E₂

dL₂ = (0.75×10¹⁰ N/m) / (12×10¹⁰ N/m²)

dL₂ = 0.0625 m

The copper wire stretches 6.25 cm and the steel wire stretches 3.75 cm.

5 0
3 years ago
How much work is done when a 700 N refrigerator is lifted straight up a distance of 4 meters​
KatRina [158]

Answer:

The work done is 2800 Joules

Explanation:

When a force causes a body to move, work is being done on the object

by the force

Work is the measure of energy transfer when a force moves an object

through a distance

→ Work = Force × Distance

→ The SI unit for work is the joule (J)

A refrigerator of 700 N is lifted straight up a distance of 4 meters

We need to find the work done​

→ The weight of the refrigerator is 700 N

→ The force = 700 Newtons

→ The refrigerator is lifted straight up 4 m

→ The distance = 4 meters

Substitute these values in the rule below

→ Work = Force × Distance

→ Work = 700 × 4 = 2800 Joules

<em>The work done is 2800 Joules</em>

8 0
3 years ago
PLEASE I NEED HELP I AM REALLY STUCK!!!
AlekseyPX

Answer: Force = Mass X Acceleration

F = 5 x 2

F = 10 N

8 0
3 years ago
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