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3 years ago

A device that converts high voltages to lower voltages is a(n) ________.

Physics

1 answer:

AysviL [449]3 years ago

7 0

Answer: A) Transformer

Explanation: A Transformer is an apparatus, device or a component in a system that is used to convert high voltage into low voltage. It is used to either increase or decrease the voltage of an alternating current.

A transformer uses the basic principle of electro magnetic induction, having two or more coils, the voltage is changed from one coil to another but with thesame frequency as alternating current energy passes through them.

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How to find total resistance in a parallel circuit?

siniylev [52]

We can use the formula,
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Hope this helps!

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3 years ago

Do you think it would take more force to transport five blocks in the sled or in the wagon?

enot [183]

It will depend on the frictional force involved in the two. I think it will take more force in sled.

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3 years ago

Read 2 more answers

Can someone help me please?

KATRIN_1 [288]

Answer:

is this math of science

Explanation:

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3 years ago

A lumberjack (mass = 110 kg) is standing at rest on one end of a floating log (mass = 206 kg) that is also at rest. The lumberja

Lemur [1.5K]

Answer:

a). The velocity of the first log is -1.65 m/s.

(b). The velocity of the second log is 1.07 m/s.

Explanation:

Given that,

Mass of lumberjack M= 110 kg

Mass of log m= 206 kg

Final velocity = 3.09 m/s

(a). We need to calculate the velocity of the first log just before the lumberjack jumps off

Using conservation of momentum

$Mu_{1}+mu_{2}=Mv_{1}+mv$

Put the value into the formula

$0=110\times3.09+206v$

$v=-\dfrac{110\times3.09}{206}$

$v=-1.65\ m/s$

The velocity of the first log is -1.65 m/s.

(b). If the lumberjack comes to rest relative to the second log

We need to calculate the velocity of the second log

$(M+m)v=Mv_{1}$

$v=\dfrac{Mv_{1}}{M+m}$

Put the value into the formula

$v=\dfrac{110\times3.09}{110+206}$

$v=1.07\ m/s$

The velocity of the second log is 1.07 m/s.

Hence, (a). The velocity of the first log is -1.65 m/s.

(b). The velocity of the second log is 1.07 m/s.

4 0

3 years ago

A force 6.3 N is applied at a distance 2.1 m from the point of rotation of a wrench. If the force is applied in a direction para

Ganezh [65]

Answer: 0 (zero)

Explanation:

The formula for torque = force × perpendicular distance between force and point of rotation.

Where force = 6.3 N, distance between force and point of rotation = 2.1m

It has been stated from the question that the force is applied in such a way that it is parallel to the position vector.

If we take the magnitude of this position vector, it will give the distance between the force and the point of rotation which still shows that the force is parallel to the rotation point which does not satisfy the condition for torque to occur hence torque is zero.

8 0

2 years ago