PHYSICS HIGH SCHOOL

Energy is measured in watts and work is measured in joules. true or false?

Answers

Answer 1
Answer: it's true
work measure by joule.
Energy = work/time
= joule/s .
and joule/s represents watt

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The function of a capacitor in an electric circuit is to A. allow current flow between its plates.B. store electric charges.C. increase circuit power.D. measure the amount of current in the circuit.
Which of the following refers to the increasing size of deserts worldwide? A. disintegration B. desertification C. decomposition D. disaggregation
The diagram shows the path of a pendulum bob that has been released.Which describes the kinetic energy of the pendulum bob? A. It increases as it travels from its maximum amplitude to its resting point. B. It decreases as it travels from its maximum amplitude to its resting point. C. It remains the same throughout the period. D. It decreases at the arm, but increases at the pivot point
If X = 5 and Y = 3, what does Z equal? 2X + 2Z = 10Y
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If the unemployment rate is rising, what part of the business cycle is the economy most likely experiencing? A. Peak B. Expansion
C. Spiral
D. Recession

Answers

Answer: D. Recession

Explanation:

A recession can be define as the part of the business cycle in which the economy declines for a period of at least six months. The decrease in the economy can be detected by drop in five economic indicators such as employment rate, manufacturing, income, gross domestic product and retail sales.

On the basis of the above explanation, recession is the part of the business cycle in which the unemployment rate rises.

D. Recession 

because the unemployment is rising which is more people loosing their jobs and recession means a decline in something

How does a television signal differ from a standard radio wave

Answers

Signal of television as radio waves are of same origin: electromagnetic waves
The difference between them is only in the frequency in which they are issued.
A TV signal carries a lot more information that a standard radio signal does ...
it has to give the receiver enough information to draw a picture and color it,
in addition to just making sound.

In order to carry more information, the TV signal has to spread over wider band
of frequency, or a wider 'channel' that a radio signal occupies.
Example:  The AM radio band, between 550 and 1700 on your dial, accommodates
many radio stations in a band of roughly 1.2 MHz. And the FM radio band, between
88 and 108 on your dial, accommodates many FM stations in a band of 20 MHz.
But each and every TV channel is given a space of 6 MHz to operate in.

Partly related to this reasoning is the fact that all broadcast TV operation takes place
at frequencies higher than any commercial AM radio, and most TV is at frequencies
that are also higher than all FM radio.

 

Formed when wind travels into a low pressure area from opposite directions and creates a spinning storm

Answers

Tornadoes are formed when wind travels into a low pressure area from opposite directions and creates a spinning storm. The tornado comes in contact to the earth’s ground and to the clouds (usually cumulus cloud) having a smaller cross sectional area at the ground than on the sky.
Tornado is your answer.

Which element of art creates edges of shapes and visual cues for the viewer in terms of both motion and space?a. emphasis
b. form
c. line
d. unity

Answers

The element of art that creates edges of shapes and visual cues for the viewer in terms of both motion and space is line. The correct option among all the options that are given in the question is the third option or option "c". The lines have the ability to create a sense of motion when drawn in spaces. 
The correct answer for the question that is being presented above is this one: "c. line." The element of art creates edges of shapes and visual cues for the viewer in terms of both motion and space is the line. Line is one of the basic elements of art.

Which statement best explains the relationship between the electric force between two charged objects and the distance between them?As the distance increases by a factor, the electric force increases by the square of that factor.



As the distance increases by a factor, the electric force increases by twice that factor.



As the distance increases by a factor, the electric force decreases by twice that factor.



As the distance increases by a factor, the electric force decreases by the same factor.



As the distance increases by a factor, the electric force decreases by the square of that factor.

Answers

According to Coulomb's Law. The relationship between the electric force between two charged objects and the distance between them is:
F = 1/d^2

So,

As the distance increases by a factor, the electric force decreases by the square of that factor.

After a large snowstorm, you shovel 2,500 kilograms of snow off of your sidewalk in half an hour. You liftthe shovel to an average height of 1.5 meters while you are piling the snow in your yard.
a. How much work did you do? Hint: The force is the weight of the snow.
b. What was your power in watts? Hint: You must always convert time to seconds when calculating power.

Answers

Well, the snow has a total weight G=mg=25,000 N. The work is L=Fd=Gh=1.5*25,000=37,500 J. The power is L/t, where t=1800 seconds. P=37,500/1800=20.833 W.
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