Answer:
D. A radio telescope (hope this helps)
Explanation:
When the tuning forks are struck simultaneously, the beat frequency is equal to the absolute value of the difference between the frequencies of the two tuning forks:
where
is the beat frequency, and
are the frequencies of the two forks.
In the first part of the problem,
and
, with
being the frequency of the unknown fork. In the second part of the problem,
and
. So we have the following system of two equations:
and the solution of this system is
Then the separation between the two pennies will be O.354m.
To find the correct answer, we need to know about the electrostatic force of attraction.
<h3>What is the separation between the pennies?</h3>
- We have given with the information's,
- As we know that the charge of one electron is 1.6×10^-19C.Thus, the total charge on the penny will be,
- We have the expression for electrostatic force of attraction as,
, here given that the electrostatic force equal to the weight of the system.
- We have to find the separation between the pennies.
Thus, we can conclude that the separation between the pennies is 0.354m.
Learn more about the electrostatic force here:
brainly.com/question/28108740
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Answer:
approximately 1.625 m/s , about 16.6% that on Earth's surface or 0.166 ɡ. Over the entire surface, the variation in gravitational acceleration is about 0.0253 m/s.
Answer:
U = 5.37*10^33 J
Explanation:
The gravitational potential energy between two bodies is given by:
G: Cavendish's constant = 6.67*10^-11 m^3/kg.s
For three bodies the total gravitational potential energy is:
BY replacing the values of the parameters for 1->earth, 2->moon and 3->sun you obtain:
hence, the total gravitational energy is 5.37*10^33 J