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kifflom [539]
3 years ago
15

Physics A-Level, both of these questions

Physics
1 answer:
podryga [215]3 years ago
8 0
I can only help you with question 7
B is the right answer.
A is wrong because when the angle is critical angle the light leaves medium 1 parallel to the surface.
C is wrong because light reflects only when travelling from a denser to a rarer/less dense medium.speed of light is lower in denser medium.
D is wrong because the frequency of the light doesn't change when travelling from one medium to another.
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Conductivity in a metal results from the metal atoms having
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Answer: A) highly mobile electrons in the valence shell

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3 years ago
A pulse of ultrasound is sent into the womb. It travels at a speed of 1500m/s in soft tissue and is reflected off the skull of t
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D=vt use this equation to get the depth of the skull
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3 years ago
Can the object be in motion if the net force acting on it is zero? explain.
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When object travels with uniform velocity, no force acts on it. hence , yes.
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3 years ago
How is the magnetic force on a particle moving in a magnetic field different from gravitational and electric forces.
harina [27]

Answer:

The magnetic force on a free moving charge depends on the velocity of the charge and the magnetic field, direction of the force is given by the right hand rule. While gravitational depends on the mass and distance of the moving particle and electric forces depends on the magnitude of the charge and distance of separation.

Explanation:

The magnetic force on a free moving charge depends on the velocity of the charge and the magnetic field and direction of the force is given by the right hand rule. While gravitational depends on the mass and distance of the moving particle and electric forces depends on the magnitude of the charge and distance of separation.

The magnetic force is given by the charge times the vector product of velocity and magnetic field. While gravitational force is given by the square of the particle mass divided by the square its distance of separation. Also electric forces is given by the square of the charge magnitude divided by the square its distance separation.

4 0
3 years ago
What physical feature of a wave is related to the depth of the wave base? What is the difference between the wave base and still
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physical feature of a wave is related to the depth of the wave base is The circular orbital motion

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