b. 2 times
c. 1/4
d. 4 times
Answer : The correct option is, (d) 4 times
Solution :
According to the Coulomb's law, the electrostatic force of attraction or repulsion between two charges is directly proportional to the product of the charges and is inversely proportional to the square of the distance between the the charges.
Formula used :
where,
F = electrostatic force of attraction or repulsion
= Coulomb's constant
and are the charges
r = distance between two charges
First we have to calculate the force exerted between S and q when the distance between the charge is 1 unit and let us assumed that the charge be 'q'
..........(1)
Now we have to calculate the force exerted between S and p when the distance between the charge is 2 unit at the same charge.
...........(2)
Equation equation 1 and 2, we get
Therefore, the force exerted between S and q is 4 times the force exerted between S and p.
I believe the answer is "4 times".
B) change the location of a volcanic eruption
C) predict the damages due to an earthquake
D) stop the occurrence of tsunamis due to an earthquake
Answer:
50% of unpolarised light passes through the first filter because, on average, 50% of the waves are aligned with the fiter's axis. Intensity is reduced by a factor 0.5.
The second filter then reduces the intensity by a factor cos²(θ)
Explanation:
Answer:
By the amount of energy they carry
Explanation:
Convection is a process that helps distribute heat, notably in daily applications such as heating systems and cooking. It involves the movement of heat through fluids, where hotter parts become less dense and rise, creating a current.
Convection is a significant process in our daily lives that enables the transfer of heat in fluids (liquids and gases) from one place to another.
One common application of convection is seen in Heating Systems. For instance, in a radiator, hot water or steam travels through the system, heats the surrounding air, and this hot air rises, creating a convection current that distributes the warmth throughout a room.
Another prime example of convection at work is Cooking. When you boil water or cook in a pot, the heat from the stove heats up the pot which then heats the water at the bottom. This hot water rises, pushing the cooler water to the bottom where it too gets heated, thus creating a convection current.
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