Answer:
A-500 N
Explanation:
The computation of the tension in the chain is shown below
As we know that
F = ma
where
F denotes force
m denotes mass = 7
And, a denotes acceleration
Now for the acceleration we have to do the following calculations
The speed (v) of the hammer is
v = Angular speed × radius
where,
Angular seed = 2 × π ÷ Time Period
So, v = 2 × π × r ÷ P
v = 2 × 3.14 × 1.8 ÷ 1
= 11.304 m/s
Now
a = v^2 ÷ r
= 70.98912 m/s^2
Now the tension is
T = F = m × a
= 7 × 70.98912
= 496.92384 N
= 500 N
Answer:
122.84 J
Explanation:
Since plate is square, area, A is given by 
The distance between plates, d, is given in the question as 2mm=0.002m
Charge on plate, Q, as given in the question is 240 
Assuming mica dielectric constant, k of 7
Capacitance, C is given by
C=
Stored energy, E is given by
E=
Therefore, the stored energy is 122.84 J
Answer:
The rate at which work is done would be power. Bonus: The SI unit of work is Joules.
Explanation:
Hope this helped, nya~ :3
Answer:
The numerical aperture of the lens.
Explanation:
A numerical aperture is a dimensionless number that is the range of angles that the system can accept / emit light.
Have a nice day!
I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)
- Heather
Answer:
Part a)

Part b)
force is 21.2 times more than the weight of the person
Explanation:
Part a)
As it is given that the distance after which he stopped is given as
d = 1.50 cm
here finally it stops so final speed is given as

initial speed is given as

now by the equation of kinematics we know that



Now the force on the leg is given as

m = mass of leg = 13 kg


Part b)
Force due to weight of the object

here we know
M = 75.0 kg


Now we know that the ratio of the weight with the force on leg is given as

so force is 21.2 times more than the weight of the person