Answer:
t = 0.04159 s
Explanation:
when a capacitor and resister are connected in series. charge on its plates decreases exponentially

where,
CHARGE q =15.0 C
INITIAL CHARGE q_0 = 30.0 uc
Resistor R = 20.0 F
capacitor C = 3.00

t = 0.04159 s
The protons will possess a force pointing to the right.
The force is called Laurentz Force, which is measured by: F = qvB
Here, q is positive for proton, v and B are cross product determined by right hand rule.
Answer:

Explanation:
Given that,
The work function for silver is 4.73 eV.
We need to find the value of the work function from electron volts to joules.
We know that,

For 4.73 eV,

So, the work function for silver is
.
Answer:
option c
Explanation:
Kinetic energy is due to the speed of a body.

When speed is doubled, the kinetic energy is quadruple.
From third equation of motion, braking distance is also proportional to square of speed. Thus, when speed is doubled, the braking distance is quadruple.
Thus, option c is correct.