4 years ago

What can experiments tell us that other studies cant

Physics

1 answer:

I am Lyosha [343]4 years ago

5 0

You get to see and do what your studying so it gets in your memory easier.

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1. How much work is done by a person if he lifts a load of 500 kg upto a height of 2m?

iren [92.7K]

Explanation:

if we take g=9.8m/s^2

F=mg

m=500

F=500×9.8=4900N

h=2

so w=mgh

w=4900×2

=9800j

3 0

3 years ago

What is the current in milliamperes produced by the solar cells of a pocket calculator through which 3.70 C of charge passes in

Kaylis [27]

Answer:

Current flowing in the cell will be equal to 0.1284 mA

Explanation:

We have given charge q = 3.70 C

And time through which charge is flowing = 8 hour

We know that 1 hour = 60 minutes, and 1 minute = 60 sec

So 1 hour = 60×60 = 3600 sec

So 8 hour = 8×3600 = 28800 sec

We know that current is rate time rate of flow of charge

So current $i=\frac{q}{t}=\frac{3.70}{28800}=1.284\times 10^{-4}A=0.1284mA$

So current flowing in the cell will be equal to 0.1284 mA

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4 years ago

The amount of light energy absorbed by an object depends on what two factors?

IRISSAK [1]

Answer:

It depends on the electro-magnetic frequency of the light and object's nature of atoms.

8 0

3 years ago

The position of an ant and a spider in a room are A(2,3,5) and B(6,0,8) determine the distance

marta [7]

Answer:

$|d| = \sqrt{ {(x_{2} -x_{1})}^{2} + {(y_{2} -y_{1})}^{2} + {(z_{2} -z_{1})}^{2}} \\ = \sqrt{ {(6 - 2)}^{2} + {(3 - 0)}^{2} +{(5 - 8)}^{2} } \\ = \sqrt{16 + 9 + 9} \\ = \sqrt{34}$

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3 years ago

The energy diagram shows the changes in energy during a chemical reaction.

Reil [10]

Answer: A. The reactants have higher potential energy, and energy is released.

Explanation:

ap3x

6 0

2 years ago