Answer:
1026 N
Explanation:
Force on a moving charge in a magnetic field is given by
F= qvB Sinθ
F = 2 x 5 x 10^6 x 3 x 10-4 x Sin (20)
F = 1026 N
I believe the answer is option B. As an electron goes near a proton, the force of attraction would increase. Electron is negatively charged while the proton is positively charged so they would naturally attract each other. Distance and force of attraction is inversely related so that as the distance decreases, the force increases.
The egg was dropped from a height of 24.7 m (free fall motion)
Explanation:
The motion of the egg is a free fall motion (uniformly accelerated motion), so we can use the following suvat equation:

where
v is the final velocity
u is the initial velocity
a is the acceleration
s is the displacement
For the egg in this problem, we have:
u = 0 is the initial velocity
v = 22 m/s is the final velocity
is the acceleration of gravity
s is the vertical displacement (the height from which the egg was dropped)
Solving for s, we find:

Learn more about free fall here:
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Answer:
140 Hz
Explanation:
Frequency is the reciprocal of period hence f=1/T
Here, the frequency is 140 times per second hence the period will be 1/140= 0.0071428571428 s
Rounded off to 3 significant figures then the period is 0.00714 s or 0.714 ms
Otherwise, the frequency is already given as 140 cycles per second which is equivalent to 140 Hz
I would help but I’m also taking this