Jerry is conducting an experiment to test friction. His setup is shown below. If he wants to test the friction between different
types of materials, what should he change in the setup above? A. Replace the mass with a different size mass B. Replace the string with a different length string C. Replace the spring scale with a different kind of scale D. Replace the wooden block with a different kind of block
1 answer:
Answer:
The correct option is D
Explanation:
This question is incomplete because of the absence of the setup which as been attached below. The setup shows/determines/tests the friction of wood (which is a block material), since Jerry wants to test the friction between different types of materials, he will have to replace the wooden block with another type of block material of choice so as to determine the friction of that also.
In order to have a comprehensive experiment, Jerry can use 4-5 different types of block material in the course of the experiment.
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<h2>Answer: 1.252</h2>
Explanation:
We are given this equation and we need to find the value of :
(1)
Firstly, we have to clear :
(2)
Applying<u> Natural Logarithm</u> on both sides of the equation (2):
(3)
(4)
According to the Natural Logarithm rules , so (4) can be written as:
(5)
Finally:
Answer:
The orbital velocity
The period is
Explanation:
Generally centripetal force acting ring particle is equal to the gravitational force between the ring particle and the planet , this is mathematically represented as
=>
Here G is the gravitational constant with value
is the mass of with value
r is the is distance from the center of the to the outer edge of the A ring
i.e r = R + D
Here R is the radius of the planet with value
D is the distance from the equator to the outer edge of the A ring with value
So
=>
So
=>
=>
Generally the orbital velocity is mathematically represented as
=>
=>
Generally the period is mathematically represented as
=>
=>
Answer:
The orbital velocity
The period is
Explanation:
Generally centripetal force acting ring particle is equal to the gravitational force between the ring particle and the , this is mathematically represented as