According to Faraday's law, voltage cannot be changed by changing the magnetic field strength.

Answers

Answer 1

Answer:

The statement ‘According to Faraday's law, voltage cannot be changed by changing the magnetic field strength’ is false. No matter how the change is created, voltage will always be produced and it could be the magnetic field strength, moving magnet toward or away from the coil etc. This is because the voltage is directly proportional to the number of turns and the magnetic flux.

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What is the total energy of a 175,000kg shuttle orbiting the Earth at 600km above Earth's surface?

Answers

m = 175,000 kg
g = 10 m/s^2
h = 600,000 m

Ep = mgh
Ep = 1050 * 10^9 [J]

Define escape velocity?

Answers

escape velocity is the minimum velocity required for an object to come out of the gravity of earth or any planet !

for earth , it is 11.2 km/sec

An example of a high energy electromagnetic wave is a radio wave
a red light wave
an x-ray
an infrared wave
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Give an example of an energy transformation.
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When heat is transferred to a substance explain why the temperature goes up

Answers

An example of a high energy electromagnetic wave is "X-Ray"

When car runs, it's chemical energy (gasoline) converts into mechanical energy

Temperature is the measure of hotness or coldness of the body, so when heat expose to a substance, it's degree of hotness increases & it's temperature increases

Hope this helps!

Earth's gravity acts upon objects with a steady force of __________.a. 8.9 meters per second
b. 9.8 meters per minute
c. 8.9 meters per minute squared
d. 9.8 meters per second squared

Answers

None of the choices is a force. 'a' and 'b' are speeds. 'C' and 'd' are accelerations. ... The steady force of gravity is 9.8 newtons PER KILOGRAM of mass. ... The question is written by someonewho very much wants to discourage anyone interested in Physics.

Answer:

9.8 meters per second squared

Explanation:

How do you calculate the initial speed given time and displacement?The question is: The longest kick in CFL history was 83.2m. If the ball remained in the air for 4.12s, determine its initial speed.
I calculated it several times and got the same answer, 40.38m/s, but the textbook says it's 28.6m/s.

Answers

Let's first find the velocity in the x-direction which is constant.
$d = vt \n v = (d)/(t) \nv = (83.2m)/(4.12s) \n v= 20.2m/s$

Now, we need the velocity in the y-direction
$d = v_(o)t + (1)/(2)a t^(2) \n d - (1)/(2)at^(2) = v_(o)t\nv_(o) = (0 - (1)/(2)(-9.81)(4.12)^(2))/(4.12)\nv_(o) = 20.2m/s$

Finally, we need to put the two velocities together using pythagorean theorem
$v_(t)^(2) = v_(x)^(2) + v_(y)^(2)$
$v_(t) = \sqrt{20.2^(2) + 20.2^(2)}$
v = 28.6m/s

which unit of measure would scientist use to measure the thickness of rock layer, created as a result of volcanic activity

Answers

A scientist would use a unit of length appropriate for the magnitude of what he or she is measuring. In this case, since rock is built up very slowly, they would probably use millimetres or centimetres. In some cases they may use meters.

There you go.

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