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mash [69]
3 years ago
10

Can you see an apple in the dark?

Physics
1 answer:
abruzzese [7]3 years ago
8 0
No. Because the color of the apple is red.
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Assuming 100% efficient energy conversion, how much water stored behind a 50cm high hydroelectric dam would be required to charg
7nadin3 [17]

Answer:

12.245m3

Explanation:

The electric energy is created by The potential energy substended by the specific volume of water in dam.

Electric energy is calculated as

E= Q× V

E is Energy, Q is charge and V is Voltage

Note that this energy has been given and is 60Joules

From conservation of energy it means;

M× g×h = 60

Where M is the mass of water.

g is acceleration of free fall due to gravity which is 9.8m/S2

h is the height of water flow.

From change of subject of formula for M; we have:

M = 60/ g × h

= 60/ 9.8 × 0.5

= 12.245kg

Now how much water required means the volume of water;

Note density = mass/volume

Therefore volume = mass/density

=12.245/1= 12.245m3

Note the density of water is 1kg/m3

4 0
3 years ago
Identify two objects at your desk, and describe each using at least 5 physical properties of matter that were discussed in this
velikii [3]

Answer:

the pencil i have on my desk is hard

Explanation:

i dont have 5 but here is one

8 0
3 years ago
Read 2 more answers
Why are lights in house wired in house wired in a parallel or nothing series ​
navik [9.2K]
Parallel circuits are mostly used in houses because if you turn one light off the rest stay on. While with a series circuit, if you turn one light off, all the lights turn off as well because they are all connected to one circuit (series). Parallel is usually 2 or more circuits which is why it lets you turn one thing off and everything stays on.
4 0
4 years ago
What would occur if there was a gain-of-function mutation in the promoter for the cyclin E gene such that cyclin E protein was a
rjkz [21]

Answer:

b) Cells will pass through the G1/S checkpoint even if conditions are not ideal for cell division.

Explanation:

In the given problem, if there exists a gain-of-function mutation for the given cell, there would not be the formation of cyclin E when there is the possibility of cells movement via the checkpoint of the G1/S, even when there are non-deal conditions for the division of cell. Thus, the correct option in the lists of options is the option b.

7 0
4 years ago
What type of energy is found in fossil fuels?
vladimir1956 [14]

Answer:The energy in fossil fuels (coal, oil, gas)

Explanation:

5 0
4 years ago
Read 2 more answers
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