I think the answer is (d) 697.08 j hope helped
Answer:
The coefficient of static friction is
Explanation:
From the question we are told that
The position of the particle is
The diameter of the CD is
The radius of the CD is evaluated as
The angular velocity of the CD when particle was ejected
At the instant just before the particle is ejected from the CD
The frictional force of the particle = centrifugal force on the particle
So
=>
=>
=>
Answer:
Height, h = 50 meters.
Explanation:
Given the following data;
Mass = 20kg
Potential energy = 10,000 J
Acceleration due to gravity, g = 10m/s²
To find the height of the box;
Potential energy can be defined as an energy possessed by an object or body due to its position.
Mathematically, potential energy is given by the formula;
Where,
- P.E represents potential energy measured in Joules.
- m represents the mass of an object.
- g represents acceleration due to gravity measured in meters per seconds square.
- h represents the height measured in meters.
Substituting into the formula, we have;
10000 = 20*10*h
10000 = 200h
Height, h = 10000/200
Height, h = 50 meters.
Answer:
That the mass can not be created or destroyed in a chemical reaction
Explanation:
An example is a car going 100 mph