Answer:
The excess charge has distributed itself evenly over the outside surface of the sphere.
Explanation:
Since the hollow sphere is a conductor, it has free electrons that can move about within the sphere. In this light, an excess charge, the like charges repels each other, therefore ensuring that charges are spread as far apart as possible. There is therefore an evenly distributed charge on the outside surface of the sphere.
Answer:
λ = 11.29 x 10⁻⁷ m = 1129 nm
Explanation:
According to the law of conservation of energy:
where,
λ = maximum wavelength = ?
h = Plank's Constant = 6.625 x 10⁻³⁴ J.s
c = speed of light = 3 x 10⁸ m/s
e = charge on electron = 1.6 x 10⁻¹⁹ C
V = stopping poteential = 1.1 V
Therefore,
<u>λ = 11.29 x 10⁻⁷ m = 1129 nm</u>
The answer is refrigerants
Answer:
Explanation:
Let the mass of bullet is m, initial velocity of bullet is vi and c be the specific heat of the bullet.
Kinetic energy, K = 1/2 mvi^2
According to the question, 50% of the kinetic energy is equal to the heat energy absorbed by the bullet.
50% of K = mass of bullet x specific heat x rise in temperature
1/4 mvi^2 = m x c x ΔT