Calcium ions have a +2 charge and sulfur ions have a -2 charge, so the formula is CaS
B is a correct answer. Positive attitudes can help us learn quicker. Hope it helped you, and have a great day.
-Charlie
Answer:
(a) 
(b) 
(c) 
Solution:
As per the question:
Mass of Earth, 
Mass of Moon, 
Mass of Sun, 
Distance between the earth and the moon, 
Distance between the earth and the sun, 
Distance between the sun and the moon, 
Now,
We know that the gravitational force between two bodies of mass m and m' separated by a distance 'r' is given y:
(1)
Now,
(a) The force exerted by the Sun on the Moon is given by eqn (1):
(b) The force exerted by the Earth on the Moon is given by eqn (1):
(c) The force exerted by the Sun on the Earth is given by eqn (1):
You really can't tell.
Power = I^2 × R = V^2 / R ( unit in Watt)
For P = I^2 × R
Where we have P directly proportional to R, increase in Power leads to increase in R
So if we have 100 will have higher resistance
For P = V^2/R
Power is inversely proportional to resistance.
So increase in Power leads to decrease in resistance.
60 watt will have a higher resistance.
Sound waves<span> are longitudinal </span>waves<span>: the air moves back and forth along the same line as the </span>wave<span> travels, making alternate patterns of compressions and rarefactions. Bottom: Ocean </span>waves<span> are transverse </span>waves<span>: the water moves back and forth at right angles to the line in which the </span>wave travels<span>.</span>
