Answer:
3727.24km/h
Explanation:
Hello!
To solve this problem we must first know what is the distance from the earth to the moon, this will be our radius.
=384400Km
Then we find the distance traveled which would be the perimeter of a circle = 2πr, finally to find the speed we divide the distance traveled by 27 days.
Finally we use conversion factor to have the speed in km / h
solving
the moon is orbiting at speed of 3727.24km/h
Answer:
The electric force between them if the pieces of grain are 2 cm apart is .
Explanation:
Given:
Charge on one grain,
Charge on another grain,
Separation between them,
Electric force acting between two charges separated by a distance
is given as:
Where, is Coulomb's constant equal to
.
Now, plug in all the values and solve for .
Therefore, the electric force between them if the pieces of grain are 2 cm apart is .
Answer:
PE = 882 J
Explanation:
Through the International System we know that the gravity of the earth is 9.8 m/s², so...
Data:
Formula:
Replace and solve:
The potential energy of the sled is <u>882 Joules</u>.
Greetings.