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Boyle's law is a gas law, stating that the pressure and volume of a gas have an inverse relationship, when temperature is held constant. If volume increases, then pressure decreases and vice versa, when temperature is held constant.
Answer:
The total mechanical energy of the bird is, E = 28 J
Explanation:
The total mechanical energy of the system is the sum of the potential and kinetic energy of the system.
When a bird is flying at a certain height from the ground, it posses partial potential and kinetic energy.
The total energy,
E = P.E + K.E
P.E = mgh J
K.E = ½ mv²
The total mechanical energy of the bird at any instant of time is equal to its potential and kinetic energy.
Hence, the mechanical energy of the bird is, E = 25 J
Answer:
Explanation:
The current through the bulb, I = 0.75 A
We need to find the number of electrons flowing per second. We know that the electric current is given by :
So, there are 
electrons flowing per second.
Answer:
The distance of separation is decreased
Explanation:
From Cuolomb's law, we know that the strength of charge is inversely proportional to the distance of separation between the charges. To mean that increasing the distance let's say from 2m to 3 m would mean initial strength getting form 1/4 to 1/9 which is a decrease. The vice versa is true hence the force of repulsion can increase only when we decrease the distance of separation.
