PHYSICS HIGH SCHOOL

As we move through the visible spectrum, red to violet (right to left in the image), the wavelength __________ and the frequency ____________.A) increases; decreases

B) increases; increases

C) decreases; increases

D) decreases; decreases

Answers

Answer 1
Answer:

Answer;

C) decreases; increases

Explanation;

  • As we move through the visible spectrum, red to violet (right to left in the image), the wavelength decreases and the frequency increases.
  • Electromagnetic spectrum comprises of electromagnetic waves arranged in the order of increasing or decreasing frequency and wavelength.
  • These electromagnetic waves includes; radio waves, microwaves, infrared, visible light, ultraviolet, x-rays and gamma rays.
  • In electromagnetic spectrum as you move from left to right, that is from the radio waves towards the gamma rays, the wavelength decreases as the frequency increases; while from gamma rays towards the radio waves the wavelength increases while the frequency decreases.
Answer 2
Answer: As we move through the visible spectrum, red to violet (right to left in the image), the wavelength decreases and the frequency increases. The correct option among all the options that are given in the question is the third option or option "C". I hope this answer helps you and you will understand the solution also. 

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A circular coil lies flat on a horizontal surface. A bar magnet is held fixed above the center of the coil with its north pole pointing downward. What is the direction of the induced current in the coil

Answers

Answer:

Explanation:

If the magnet is dropped from this position, then the direction of the induced current in the coil would be anticlockwise. Lenz's law allows us to predict the direction of the induced current in a circuit. It is also known as the Right hand rule. It states that the current that is being induced in a particular circuit is as a result of the change in the magnetic field in order to oppose the change in the magnetic flux and also to apply an mechanical force that is opposing the motion. Because of this, the current is pointed to the direction of  the pole, to oppose this the induced current should be directed anticlockwise.

In a series circuit containing two unequal resistors, higher power is developed in the

Answers

In a series circuit, the current that passes through both resistors is equal. What determines the power in that element would be the value of the resistance. In terms of current and resistance, power would be equal to the square of current multiplied by the resistance. So having a higher value of resistance would result in higher power.

An oscillator makes four vibrations in one second. What is its period and frequency?

Answers

Frequency = no. of oscillations/ time

= 4 / 1
= 4Hz

Time period = 1/ frequency

= 1/ 4

= 0.25 seconds.

The driver of a 1500 kg car, travelling on a highway, hits the brakes. A force of 12000 N stops the car in a distance of 64 m. how fast was the car going when the driver hit the brakes?

Answers

Answer:

v = 32 m/s

Explanation:

As per work energy theorem we know that work done by all the forces must be equal to change in kinetic energy of the car

So here when brakes are applied then work is done by the brakes which is equal to change in kinetic energy of the car

so we know that work done by the brakes is given as

W = -12000 * 64

W = -768000 J

now we will have

W = 0 - (1)/(2)mv^2

-768000 = - (1)/(2)(1500) v^2

v = 32 m/s

A crane lifts 400 N crate full of baked beans 15m how much work is done by the crane ?

Answers

Lookattheattachedpicture

Hope itwillbehelpfultoyou..

In a closed system, the volume of a gas is not related to the volume of its enclosure.a. True
b. False

Answers


That's silly.  The volume of a gas is very intimately related
to the volume of its enclosure.  In fact, they're identical,
because a gas always expands to fill whatever you put it in.

The answer to your question would be FALSE. Gas takes up space and if it is in an enclosed area then it would directly relate to how much space/area there is for the gas to fill.
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