Paul sprinkles iron filings onto a piece of paper

A boy is pulling a box on the ground by a string to the right. What four forces he using?

kirill115 [55]

The strong force in his body

3 0

3 years ago

A lamp has a power of 120 w and is left on for 24 hours. A television has a power of 350 W and is left on for 3 hours. Which sta

soldi70 [24.7K]

<h2>Hello!</h2>

The answer is C. The television uses 6,588,000 J less than the lamp.

First, we must know that 1 Wh( Watt consumed in 1 hour) = 3600 J

Wh is the unit that express the energy amount of consumed in 60 minutes/ 1 hour.

So,

From the enunciate information we can calculate the energy consumed by the lamp and the television.

For the lamp, we have that it left on for 24 hours and it has a power of 120

For the television, we have that it left on for 3 hours and it has a power of 350W

Calculating the energy consumed (Wh) we have:

$Wh= Watt*Time= 120 Watt* 24 hours= 2880 Wh$

and converting it to Joule, we have:

$2880 Wh*\frac{3600 J}{1 Wh}= 10,368,000 J$

Doing the same for the television, we have:

$Wh= 350 Watt* 3 hours= 1050 Wh$

and converting it to Joule, we have:

$1050 Wh*\frac{3600 J}{1 Wh}= 3,780,000 J$

Finally, we have

$10,368,000J(Lamp)-3,780,000J(Television)= 6,588,000J$ :

Then having calculated both consume, we have that the television uses 6,588,000 J less than the lamp.

3 0

3 years ago

Read 2 more answers

Match each coordinate used on a globe of earth to its counterpart on the celestial sphere

nika2105 [10]

I hope it will help u!!!!!!!
Equator------------------C::::::::::::::
Latitude------------------B::::::::::::::
Longitude---------------A::::::::::::::

3 0

3 years ago

A particular solid is electrically charged after it is rubbed, but it is not known whether its charge is positive or negative. H

pshichka [43]

Answer:

You can determine which charge has the solid by rubbing plastic and fur, and bringing near the plastic and the solid to determine if they are repeled or attracted. If they are repeled, the solid is charged negatively and if they are attracted, the solid is charged positively.

Explanation:

In order to determine the charge of the solid (negative or positive) using a piece of plastic and fur, you have to rubb the plastic with the fur (this is charging by friction)

Negative charges are transferred from the fur to the piece of plastic, therefore the plastic is charged negatively.

Then, you have to bring near the solid and the plastic. If them are repeled, it means that the solid is charged negatively (Because similar charges are repeled)

If them are attracted, it means that the solid is charged positively (Because opposite charges are attracted)

3 0

3 years ago

The correct order of the planets is:

Nastasia [14]

False its Jupiter than Saturn

6 0

3 years ago