3 years ago

Which way do electrons within a rectangular rod move when a negatively-charged balloon is brought near a positively-charged rod?

Physics

1 answer:

Gnom [1K]3 years ago

7 0

Answer: They would attract each other

Explanation:

Opposites attract

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Where do people get their energy to turn a wheel??

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The three forces acting on a hot-air balloon that is moving vertically are its weight, the force due to air resistance and the u

irinina [24]

Explanation :

The forces acting on hot- air balloon are:

Weight, (W)

Force due to air resistance, (F)

Upthrust force, (U)

Its weight W is acting in downward direction. The upthrust force U acts in upward direction. When the balloon is moving upward, the air resistance is in downward and vice versa.

In this case, the hot-air balloon descends vertically at constant speed.

so, $a=0$

and $F=ma=0$

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when it is ascending let the weight that it is releasing is R, so

$(W-R) + F = U$ ..........(2)

solving equation (1) and (2)

$(W-R)+F=W-F$

$R=2F$

2F is the weight of material that must be released from the balloon so that it ascends vertically at the same constant speed.

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3 years ago

Read 2 more answers

Is using a heater to keep warm when it is cold conduction convection or radiation

Dmitry_Shevchenko [17]

Answer: convection

Explanation:

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6. State whether each of the following is an example of conduction, convection, and/or radiation. Explain if you think there is

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A). Convection is heating the soup in the pot.
When you stick the spoon into the hot soup,
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c). The heat from the metal bench conducts directly
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d). You feel the heat on your face ... but not on the back of your
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2 years ago