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3 years ago

14

One of the problems with nuclear energy is the potential harm caused by nuclear radiation emitted by the materials used to gener

ate power, such as uranium and plutonium. How is the potentially dangerous radiation harnessed to make electricity?

1 answer:

Serhud [2]3 years ago

3 0

Answer:

.....

why no one is answering??

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An aluminum bar has a mass of 9 kg in the air. Calculate its volume. Now imagine that you submerge the aluminum bar in water han

yan [13]

Answer:

55.7 N

Explanation:

The density of aluminum is 2710 kg/m³. So its volume is:

V = (9 kg) / (2710 kg/m³)

V = 0.00332 m³

The apparent weight is the actual weight minus the buoyant force.

N = mg − B

N = mg − ρVg

N = g (m − ρV)

N = (9.8 m/s²) (9 kg − (1000 kg/m³) (0.0332 m³))

N = 55.7 N

7 0

3 years ago

the line on the position time graph show the velocites of different vehicles which line represents a vehicle moving at constant

Oksi-84 [34.3K]

For some mysterious reason, we can't see the graph.

On a position/time graph, constant velocity is represented by a <em>straight line</em>. Depending on the velocity, the line may be sloping up, sloping down, or horizontal. The only thing the line on the graph <u><em>CAN't</em></u> be is vertical.

7 0

3 years ago

All points to the of zero on a horizontal number line are negative

Mumz [18]

Numbers on the left of zero are negative. Number lines go from smallest to greatest.

5 0

3 years ago

Read 2 more answers

Consider a particle with unit charge q, and mass m, in a constant magnetic field B directed along the positive z–axis. The parti

max2010maxim [7]

Answer:

it must be helical motion in which the charge particle will move uniformly along z axis and simultaneously it will move in circular path in xy plane.

Explanation:

Magnetic field is along z axis while velocity is in x-z plane

so we will have

$F = q(\vec v \times \vec B)$

so here we can say

$F = q(u\hat i + w\hat k) \times (B \hat k)$

so we will have

$F = quB(-\hat j)$

so here the net force on the charge is perpendicular to its x directional velocity along - Y direction

So due to this component of motion it will move along a circle while other component of the motion will remain uniform always

So here it is combination of two parts

1) Uniform circular motion

2) Uniform motion

So we can say that it must be helical motion in which the charge particle will move uniformly along z axis and simultaneously it will move in circular path in xy plane.

4 0

3 years ago

A student went to a hill station early in the morning, he could hear the echo of his clap after 0.1 second. When he went to the

Dahasolnce [82]

Answer:

See the explanation.

Explanation:

The speeds of sound depend upon the temperature of the medium. As the temperature increased in the afternoon, the speed of sound increases. Then the time taken by reflected sound will be less than 0.1 sec in the afternoon. And to hear an echo the time gap between an original sound and reflected sound must be at least 0.1 sec. That is why the student could not hear the echo at all in the afternoon.

7 0

3 years ago