The answer is option a, that is " <span>electromagnetic repulsions</span><span>".
The sun generates energy by nuclear fusion, and converts a part of its mass into energy and nuclear fusion is the source of all energy that is released by the sun. The two things which are required for the process of nuclear fusion are high temperature and the high densities.
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<em>A glass flask of volume 400 cm³ is just filled with mercury at 0°C. How much mercury will overflow when the temperature of the system rises to 80°C.</em>
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The volume of mercury that overflow is 5.376 cm³
<h3>Further explanation</h3>
Given
volume of glass = 400 cm³
Δt=80 °C - 0 °C = 80
Required
overflow volume
Solution
With an increase in the temperature of the substance, objects can expand. This expansion includes volume expansion.
Can be formulated
Find volume expansion of glass and mercury
Overflow :
ΔV mercury - ΔV glass : 5.76-0.384 = 5.376 cm³
Energy from a light source is known as radiation.
The ground water refers to water present in the under earth in the cracks or pores or similar spaces.We majorly depends upon this sources of water specially in rural area.
It helps in irrigation and also serve as drinking water supply.
The words or phrases which identify layer of ground water are:
a) water table: the uppermost water saturated layer
b) kettle lake: it is an underground lake (not ground water)
c) Saturation zone : this is the zone of water below the water table
d) undergound lake: this is kettle lake (not ground water)
e) sink hole: Not a layer of ground water
So the layers of ground water are
a) water table
b) saturation zone
Answer:
a 17 bc it is how it works
