Answer:
Part a)
W = 3070 J
Part b)
W = 218.5 J
Explanation:
Part a)
Work done to throw the ball upwards in the sky is given by work energy theorem
It is given as
Part b)
Now similarly we have to find the work done to launch the bullet from gun is also given by change in kinetic energy
Answer:
d' = 75.1 cm
Explanation:
It is given that,
The actual depth of a shallow pool is, d = 1 m
We need to find the apparent depth of the water in the pool. Let it is equal to d'.
We know that the refractive index is also defined as the ratio of real depth to the apparent depth. Let the refractive index of water is 1.33. So,
or
d' = 75.1 cm
So, the apparent depth is 75.1 cm.
Explanation:
It is given that,
Electric field,
The relation between the electric force and the electric field is given by :
Where
q is the charge
(a) Charge on the electron,
Electrostatic force,
(b) If an electron is missing, the net charge remains the same only sign changes.
So, force becomes,
Hence, this is the required solution.
Matter can be describer as salty soup, fire bug, and by ice tea hope that helped
The speed of a mechanical wave depends on the mechanical properties
of the medium through which the wave is traveling.
The speed of an electromagnetic wave depends on the electrical properties
of the medium through which the wave is traveling.
It's pretty well unanimous for choice <em>A</em> .