Each ion contains three extra protons. Hence, the extra charge on each
=
C
Total charge = 0.035 pC
Total charge (Q) = C
Let the number of ions be n.
According to question:
n = 72917
Hence, the total number of ions needed to be transferred is 72917
Answer:
The efficiency of the system is 63.7 %
Explanation:
Given;
input power of the motor, = 1.5 kW = 1,500 W
mass of the car lifted, m = 1300 kg
height through which the car was lifted, h = 1.8 m
time, t = 24 s
The output power of the motor is calculated as;
Output Power = F x v
= (mg) x (d/t)
= (1300 x 9.8) x (1.8 / 24)
= 12,740 x 0.075
= 955.5 W
The efficiency of the system is calculated as;
The correct answer is 63.7%
Answer:
(A) The spring constant is <u>98 N/m.</u>
(B) The period of oscillation is <u>0.635 s.</u>
Explanation:
Given:
Mass of the body is,
Extension length of the spring is,
Now, let 'k' be the spring constant.
The force acting on the body is due to gravity only and is equal to its weight.
So, weight of the body is given as:
Now, we know that for a spring-mass system, the net force acting on the body is equal to the product of the spring constant and extension length. Therefore,
Hence, the spring constant is 98 N/m.
(B)
Period of oscillation of a body of spring-mass system in SHM is given as:
Plug in the given values and solve for period 'T'. This gives,
Therefore, the period of oscillation is 0.635 s.