Answer:
The correct option is b) By the time they get to be theories, they cannot be disproven. It's not necessary that the theories are always right. They can be proven wrong.
Explanation:
Answer:
The no of revolutions is 2.032 revolution.
Explanation:
Given that,
Moment of inertia = 0.85 Kgm²
Radius = 170 mm
Force = 32 N
Time = 2s
We need to calculate the angular acceleration
Using formula of torque
Where, F = force
r = radius
I = moment of inertia
Put the value into the formula
We need to calculate the rotational speed
Using equation of angular motion
We need to calculate the angular position
Using equation of angular motion
We need to calculate no of revolutions
Hence, The no of revolutions is 2.032 revolution.
There are two main points that should be emphasized about the different types of electromagnetic radiation. The sequence from longest wavelength (radio waves) to shortest wavelength (gamma rays) is also a sequence in energy from lowest energy to highest energy
hope this helps you!✌
Answer:
Explanation:
Let the force at the support end is R and at the left end is F.
According to the equilibrium condition
F + R = 280 + 500
F + R = 780 .... (1)
Take moments about G.
F x 1.5 + R x 0.5 = 500 x 1.5
3F + R = 1500 .... (2)
Subtract equation (1) from equation (2), we get
2F = 1500 - 780
F = 360 N
R = 780 - 360
R = 420 N
(a) Force at support is 420 N
(b) force at the left end is 360 N.