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nlexa [21]
3 years ago
8

When a cup is placed on a table, which force prevents the cup from falling to the ground? A. gravitational force B. normal force

C. resistance force D. tension force
Physics
2 answers:
stealth61 [152]3 years ago
6 0

its B... normal force


meriva3 years ago
6 0

Answer:

here normal force will balance the weight of cup which will prevent it from falling

B. normal force

Explanation:

When cup is placed on the table then there will be two forces on the cup

1). Normal force due to table which will be perpendicular to the table and acting upwards

2). gravitational force or weight of the cup which acts perpendicular downwards

now since the cup is at rest so net force on the cup must be balanced

so we can say

F_g - F_n = 0

so here we will have

mg - F_n = 0

so here normal force will balance the weight of cup which will prevent it from falling

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3 years ago
Which unit is equivalent to j/s
mrs_skeptik [129]

To be honest, there's no sure way to answer that, because you haven't defined your terms and we can't be sure of what j or s might be.

Tell you what I'll do:. I'll assume definitions for j and s, and then I'll answer the question that I invented.

Assume that j stands for Joule, the unit of energy. And assume that s stands for 'second', the unit of time.

Then j/s is the rate of transferring energy or doing work.

Its unit is the Watt, equivalent to 1 Joule per second.

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How much heat is required to convert 0.3 kilogram of ice at 0°C to water at the same temperature
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100,200J of heat is required to convert 0.3kg of ice of 0°C to water at same temperature.

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The energy transferred by the appliance using mains electricity is 17.3 KJ

<h3>Data obtained from the question </h3>
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  • Charge (Q) = 150 C
  • Energy (E) =?

<h3>How to determine the energy transferred </h3>

The energy transferred can be obtained as follow:

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E = 17250 J

Divide by 1000 to express in kilojoules

E = 17250 / 1000

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Learn more about energy stored in a capacitor:

brainly.com/question/14739936

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