A 10,000-watt radio station transmits at 535 kHz.Determine the number of joules transmitted per second.

Answers

Answer 1

Answer:

Answer:

Energy is 10,000 Joules.

Explanation:

It is given that, a 10,000 watt radio station transmits at 535 kHz. We have to write the number of joules transmitted per second.

We know that number of joules transmitted per second is called the power. Its SI unit is watts. Mathematically, the power of radio station is given by :

$P=(W)/(t)$

Where

W is the work done by radio station

t is the time taken.

According to relation :

$1\ watt==(1\ Joule)/(1\ seconds)$

So, $10,000\ watt==(10,000\ Joule)/(1\ seconds)$

Hence, energy per second is 10,000 Joules.

Answer 2

Answer:

If you are given a 10,000-watt radio station transmits at 535 kHz, then you just divide one by 535,000 Hz which is equal to 1.87 x 10^-6 seconds. Multiply this value by 10,000W and you get 0.019 Joules.

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A skateboarder skates down a ramp for 3 seconds. If his initial velocity was 0.8 m/s and · his final velocity was 7 m/s, what was his acceleration?

Answers

Answer:

The acceleration of the skateboarder is 2.067 m/s²

Explanation:

Given;

initial velocity of the skateboarder, u = 0.8 m/s

final velocity of the skateboarder, v = 7 m/s

time of motion, t = 3 s

The acceleration of the skateboarder is given as;

$a = (v-u)/(t)\n\na = (7-0.8)/(3)\n\na = 2.067 \ m/s^2$

Therefore, the acceleration of the skateboarder is 2.067 m/s²

In certain fireworks, potassium nitrate breaks down into potassium oxide, nitrogen, and oxygen. This is an example of a _____ reaction. The opposite process is a _____ reaction.options for both of the blanks are
A) combustion
B) decomposition
C) replacement
or D) synthesis

Answers

In certain fireworks, potassium nitrate breaks down into potassium oxide, nitrogen, and oxygen. This is an example of a "Decomposition reaction". The opposite process is a "Synthesis" reaction.

In short, fill your blanks as:
1st blank → Option B
2nd blank → Option D

Hope this helps!

Answer : The correct option for 1st blank is Decomposition and for 2nd blank is Synthesis.

Explanation :

Decomposition reaction : This reaction occurs when one bigger molecule decomposes into two or more smaller molecules.

Synthesis reaction : This reaction occurs when two or more smaller reactants combine to form a single large product.

Combustion reaction : This reaction occurs when a hydrocarbon molecule react with the oxygen molecule to produce carbon dioxide and water.

Replacement reaction : This reaction occurs when the more reactive element replaces the less reactive element in a compound.

When potassium nitrate breaks down into potassium oxide, nitrogen, and oxygen that means one bigger molecule decomposes into two or more smaller molecules. So, this an example of a decomposition reaction.

And in the opposite process that means potassium oxide, nitrogen, and oxygen are combined to form potassium nitrate means two or more small reactant combine to form a single large product. So, this an example of synthesis reaction.

Andrew drives to his friend's house, which is 60 miles to the east. After visiting, he travels 25 miles to the west to visit his grandparents. What is Andrew's displacement?

Answers

Andrew's displacement while visiting his grandparents is 35 miles to the east.

What is displacement?

The displacement is the shortest distance travelled by the particle. It is the vector quantity which represents both the magnitude and direction.

Given Andrew drives to his friend's house, which is 60 miles to the east. After visiting, he travels 25 miles to the west to visit his grandparents.

The displacement will be

60 miles to the east - 25 miles to the west = 35 miles to the east

Thus, the Andrew's displacement is 35 miles to the east.

Learn more about displacement.

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A few miles like 23 I’m thinking

Do humans impact Earth's climate?

Answers

Human activities contribute to climate change by causing changes in Earth's atmosphere in the amounts of greenhouse gases, aerosols (small particles), and cloudiness.

Yes we do by driving cars and cutting down trees. This effects the Earth's climate.

Device that measures electric current

Answers

This device is called an ammeter.

An early submersible craft for deep-sea exploration was raised and lowered by a cable from a ship. When the craft was stationary, the tension in the cable was 7000 N {\rm N}. When the craft was lowered or raised at a steady rate, the motion through the water added an 1800 N {\rm N} drag force.Part AWhat was the tension in the cable when the craft was being lowered to the seafloor?Express your answer to two significant figures and include the appropriate units.Part BWhat was the tension in the cable when the craft was being raised from the seafloor?Express your answer to two significant figures and include the appropriate units.