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oksian1 [2.3K]
3 years ago
15

How much work is done against gravity when lifting a 2-kg sack of groceries a distance of 2.5 meters?

Physics
1 answer:
Crazy boy [7]3 years ago
8 0
W = F x d/x = (m x Ag) x h, therefore, mass (2kg x 9.8) x 2.5m = 49J
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PLS HELPPPP AHHHH I WILL MARK AS BRAINLIEST
SIZIF [17.4K]

Answer:

Liquid

Explanation:

To turn liquid into gas, you add heat, to remove heat from gas, you make liquid.

8 0
2 years ago
Two particles with charges of 5.00 μ C and -3.00 μC are placed 0.250 m apart. Where can a third charge be placed so that the net
MAXImum [283]

Answer:

0.86 m

Explanation:

q₁ = magnitude of positive charge = 5 x 10⁻⁶ C

q₂ = magnitude of negative charge = 3 x 10⁻⁶ C

r = distance between the two charges = 0.250 m

d = distance of the location of third charge from negative charge

q = magnitude of charge on third charge

Using equilibrium of electric force on third charge

\frac{kq_{2}q}{d^{2}} = \frac{kq_{1}q}{(r+d)^{2}}

\frac{q_{2}}{d^{2}} = \frac{q_{1}}{(r+d)^{2}}

\frac{(5\times 10^{-6})}{(0.250+d)^{2}} = \frac{(3\times 10^{-6})}{(d^{2}}

d = 0.86 m

4 0
3 years ago
The majority of water on Earth exists as salt water, and only a very small percentage exists as fresh water. More than half of t
serg [7]

Answer:

B Crystallization

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8 0
2 years ago
What occurs any time an object speeds up, slows down, or changes directions
Svetlanka [38]

Whenever the motion of an object <em><u>changes</u></em> . . . speeding up, or slowing down,
or changing direction . . . that change is called "<em><u>acceleration</u></em>".  Acceleration is
produced by force on the object. 

If there is <em><u>no force</u></em> on the object, then there is no acceleration.  That means that
its motion <em><u>doesn't change</u></em>.  The object remains in constant, uniform motion ...
moving with steady speed, in a straight line. 

No force is necessary to <em><u>keep</u></em> an object moving, only to <em><u>change</u></em> its motion.


4 0
3 years ago
Which of the following is an advantage of geothermal energy?
Fittoniya [83]
There are many advantages<span> to </span>geothermal energy.Geothermal energy<span> is renewable </span>energy<span> because once water or steam is used, it can be pumped back into the ground. It is also clean </span>energy<span>. </span>Geothermal <span>power plants, unlike plants that burn fossil fuels, do not produce greenhouse gases that can be harmful to the atmosphere.

</span>
3 0
3 years ago
Read 2 more answers
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