I don’t think I understand the question but true?
Answer:
a new moon is quite near the Sun in the sky
Explanation:
Answer:
5488 Joules
Explanation:
Use the formula for the potential energy:
Answer:
Explanation:
Given
-- initial velocity
--- height
Required
Determine the time to hit the ground
This will be solved using the following motion equation.
Where
So, we have:
Subtract 30.2 from both sides
Solve using quadratic formula:
Where
Split the expression
or
or
Time can't be negative; So, we have:
Hence, the time to hit the ground is 1.82 seconds
Answer:
Hits per second=199 hit/s
Explanation:
#Given the angular velocity, , radius of the record and the distance between any two successive bumps on the groove as .
The linear speed of the record in meters per second is:
#From above, if the bumps are uniformly separated by 1m, then the rate at which they hit the stylus is:
Hence the bumps hit the stylus at around 199hit/s