Answer:
the velocity in all the cases will be same.
Explanation:
given,
girl throws a stone from the bridge
air is friction less
we have to find from the given cases in which case the velocity of stone will be greatest.
According to Work energy theorem work done by the sum of all the force is equal to kinetic energy.
As the air is frictionless hence the speed depend upon the height from which the stone is thrown.
height in all the cases is same.
so, the velocity in all the cases will be same.
Answer:
0. 1226495726kg
Explanation:
Force is the product of mass and acceleration.
Mathematically,
Force(F) = mass (m)×acceleration(a)
Substituting the values into the equation
2. 87=m×23. 4
2. 87=m (23. 4)
2. 87/23. 4=m (23. 4)/23. 4
2. 87/23. 4=m
0. 1226495726=m
If they both have the same kinetic energy then they both have the same kinetic energy. otherwise it would be the bowling ball due to factors like weight
Answer:
(a) has the highest frequency
Explanation:
E = hf...where E(is the energy of a photon);h(is the planck's constant) and f is the frequency of the photon
Whereby this formula shows us that energy of a photon is directly proportional to its frequency
So hence if the energy is high then the frequency of the photon is also high

EQUATOR IS THE LINE THAT DIVIDES EARTH INTO TWO HEMISPHERES .