Answer:
A_negative
B_positive
C_positive
D_positive
E_negative
Explanation:
according to the law of electrostatic which is
like charge repels and unlike charge attract.
Answer:
an average of 92,955,807 miles
Explanation:
We have that the time, to the nearest minute, when the water level is at 1.125 m for the second time after midnight is
From the Question we are told that
Maximum height
Minimum height
Time for next high tide will occur
Generally Average Height
Therefore determine Amplitude to be
Generally, the equation for Time is mathematically given by
At t=0
Where
Therefore
Hence the Time at is
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Answer:
22.3 N
Explanation:
The centripetal force acting on a the rock is given by:
where
m = 3.0 kg is the mass of the rock
v is the speed of the rock
r = 0.75 m is the radius of the trajectory
We need to find the speed of the rock. We know that the rock makes a complete circle in t = 2.0 s, and the radius of the circle is r = 0.75, so the speed is equal to the ratio between the distance covered (the perimeter of the circle) and the time taken:
And so, the centripetal force is