An object moves in a circle with a period of 0.025 hours. What is its frequency in Hz?
1 answer:
You might be interested in
Answer:
Explanation:
Given that,
The speed of an electron,
We need to find the wavelength of this electron. It can be calculated using De -broglie wavelength concept as :
h is the Planck's constant
So, the wavelength of the electron is . Hence, this is the required solution.
The correct answer of this question is : 10.2 Kg.
EXPLANATION :
As per the question, the ball is attached to the cable.
The tension produced in the cable when the ball is hanged from it, is equal to the weight of the ball. It is so because the cable maintains its equilibrium.
Hence, tension in the cable = weight of the ball.
The tension produced in the cable is given as T = 100 N.
The weight of the ball is equal to the product of mass with acceleration due to gravity.
Let the mass of the ball is m.
Hence, weight of the ball W = mg
Here, g is known as acceleration due to gravity, and its value is g = .
From above, we know that W = T
⇒ mg = 100 N
⇒ m = Kg
=
= 10.2 Kg. [ans]