When a motor is turned on, electrical energy is transformed to mechanical energy plus heat energy. TRUE or FALSE?

Answers

Answer 1

Answer: i think it's true because when it rotate there is a energy loss so the heat energy represent the losses

Related Questions

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You mix two clear solutions , instantly your see a bright yellow precipitate form. What type of reaction did your just observe
Whate type of wave is made up of a sine wave plus all of its odd harmonics?
1. Who first published the classification of the elements that is the basis of our periodic table today?2. By what property did Mendeleev arrange the elements?3. By what property did Moseley suggest that the periodic table be arranged?4. “The properties of the elements repeat periodically” defines the _____.5. What is a period and how many are there in the periodic table?6. What is a group (also called a family)? How many are there in the periodic table?7. State the number of valence electrons in the following:Element Valence ElectronsMagnesium Phosphorous Fluorine Neon 8. Give the names and chemical symbols for the following:Atomic Number Element Name Chemical Symbol13 92 5 25 9. List, by number, both the period and group of each of these elements.Element Symbol Period GroupBeryllium Be Iron Fe Lead Pb 10. Which of the following pairs of elements belong to the same period? Highlighta. Na and Cl b. Na and Li c. Na and Cu d. Na and Ne11. Which of the following pairs of elements belong to the same group? Highlighta. H and He b. Li and Be c. C and Pb d. Ga and Ge12. What group numbers are the transitions elements?13. What are the group 1/IA elements called?14. What are the group 2/IIA elements called?15. What are the group 17/VIIA elements called?16. What are the group 18/VIIIA elements called?17. Which alkali metal belongs to the sixth period?18. Which halogen belongs to the fourth period?19. What element is in the fifth period and the eleventh group?20. What is the heaviest noble gas?21. What is the heaviest alkaline earth metal?22. Would you expect strontium to be, chemically, more similar to calcium or rubidium and WHY?23. List the three lightest noble gases.24. List all of the alkali metals
A parallel-plate air capacitor is made from two plates 0.210 m square, spaced 0.815 cm apart. it is connected to a 120 v battery. if the plates are pulled apart to a separation of 1.63 cm , suppose the battery remains connected while the plates are pulled apart. part a what is the capacitance?

what kind of wave would be observed in outer space between planets where there is very little matter?

Answers

Shock waves can be observed in outer space between planets where there is very little matter. Although little, plasma does exist in outer space which allows the waves to travel.

Answer:

Either A or C

Explanation:

there are 2 quizlets with 2 different answers, i don't know, man.

A ball is thrown horizontally from the top of a building 0.10 km high. The ball strikes the ground at a point 65 m horizontally away from and below the point of release. What is the speed of the ball just before it strikes the ground?

Answers

The speed of the ball just before it strikes the ground is equal to 46.55 m/s.

Given the following data:

Horizontal distance = 65 meters

Height of building = 0.10 km = 100 meters

We know that the acceleration due to gravity (g) of an object on planet Earth is equal to 9.8 $m/s^2$ .

To determine the speed of the ball just before it strikes the ground:

First of all, we would determine the time it took the ball to strike the ground by using the formula for maximum height.

$H = (1)/(2) gt^2\n\n100 = (1)/(2) * 9.8 * t^2\n\n200 = 9.8t^2\n\nt^2 = (200)/(9.8) \n\nt^2=20.41\n\nt=√(20.41)$

Time, t = 4.52 seconds

Next, we would find the horizontal velocity:

$Horizontal\;velocity = (horizontal\;distance)/(time) \n\nHorizontal\;velocity = (65)/(4.52)$

Horizontal velocity, V1 = 14.38 m/s

Also, we would find the velocity of the ball in the horizontal direction:

$V_2^2 = U^2 + 2aS\n\nV_2^2 = 0^2 + 2(9.8)(100)\n\nV_2^2 = 1960\n\nV_2 = √(1960) \n\nV_2 = 44.27 \;m/s$

Now, we would calculate the speed of the ball just before it strikes the ground by finding the resultant speed:

$V = √(V_1^2 + V_2^2) \n\nV = √(14.38^2 + 44.27^2)\n\nV = √(206.7844‬ + 1959.8329‬)\n\nV =√(2166.6173)$

Speed, V = 46.55 m/s

Answer:

v = 46.55 m/s

Explanation:

It is given that,

A ball is thrown horizontally from the top of a building 0.10 km high, d = 0.1 km = 100 m

The ball strikes the ground at a point 65 m horizontally away from and below the point of release, h = 65 m

At maximum height, velocity of the ball is 0. So, using the equation of motion as :

$d=ut+(1)/(2)at^2$

Here, a = g

$100=0+(1)/(2)* 9.8t^2$

$t=4.51\ s$

Let $v_x$ is the horizontal velocity of the ball. It is calculated as :

$v_x=(65\ m)/(4.51\ s)=14.41\ m/s$

Let $v_y$ is the final speed of the ball in y direction. It can be calculated as :

$v_y^2+u_y^2=2as$

$u_y=0$

$v_y^2=2gd$

$v_y^2=2* 9.8* 100$

$v_y=44.27\ m/s$

Let v is the speed of the ball just before it strikes the ground. It is given by :

$v=√(v_x^2+v_y^2)$

$v=√(14.41^2+44.27^2)$

v = 46.55 m/s

So, the speed of the ball just before it strikes the ground is 46.55 m/s. Hence, this is the required solution.

you apply the same amount of heat to five grams of water and five grams of aluminum the temperature of the aluminum increases more than the temp of the water what can you conculde

Answers

Answer:

As we know that heat given to a substance is given by the formula as

$Q = m C\Delta T$

now we know that

$\Delta T = (Q)/(m C)$

now we know that aluminium and water both are of same mass and both are given same amount of heat so the value of Q and m will be same.

So here we can say that change in temperature depends inversely on the specific heat capacity.

So here if more specific heat capacity then there will be less change in temperature.

so we can conclude that since temperature of aluminium increases more so the specific heat capacity of aluminium will be less than that of water.

I can conclude that the aluminum heats up faster then the water, since how they are made up is more different, each has a different compound to it, plus water is more denser

An observer on Earth measures the length of a spacecraft travelling at a speed of 0.700c to be 78.0 m long. Determine the proper length of the spacecraft.

Answers

If the observer on Earth measures the speed of the spacecraft
as 0.700c and its length as 78.0 meters, then engineers aboard
the spacecraft measure their vehicle as 142.4 meters long.

They're both correct. There's no such thing as the spacecraft's
"real" or "proper" length.

Define nuclear energy

Answers

Answer:

Nuclear energy is the energy stored in atoms that can produce electricity.

Hope that helps. x

1)why do we get electric shock while holding a live wire barefooted and not when wearing rubber shoes?

Answers

Electricity is always going to take the path of least resistance to ground. The rubber in your shoes is not a conductor of electricity, therefore you are not completing the circuit and you don't get shocked. Your bare feet, on the other hand ARE conductors of electricity, so when you hold the wire, you complete the circuit and become the path of least resistance to ground... ZAP!

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