Answer:
57.5022228905 s
Explanation:
= Initial voltage
= Final voltage = 0.401 V
= Initial time = 8.36 s
= Final time
K = Kinetic Energy = 
C = Charge = 
Voltage is given by

We have the relation

The time taken is 57.5022228905 s
U= 2m/s
a= 3m/s^2
v= 11m/s
t=?
We know that a= v-u/t
t = v-u/a
t = 11-2/3
= 9/3
=3 seconds
Hope it helps!
Answer:
81 times the first body
Explanation:
Let the temperature of the first object is T.
The temperature of the second object is 3T.
According to the Stefan's law, the energy radiated per unit area per unit time is given by

So, for the first body
.... (1)
for the second body
..... (2)
By equation (1) and (2),
E2 = 81 times E1
So, the second body gives 81 times more energy per unit area per unit time
Radioactivity is a nuclear phenomenon. It is the process of spontaneous emission of α (alpha particles) or β (beta particles) and γ (gamma particles ) radiations from the nucleus of atoms during their decay.
- Uranium and radium are the two radioactive substances.
Explanation:
<h3>Hope it helps you!!</h3>
D subtract the atomic number from the atomic mass
N = A - Z