Answer:
It will take 1.789 sec
Explanation:
We have given height h = 30 m
Initial velocity u = 8 m/SEC
Acceleration due to gravity
Now according to second equation of motion
After solving we get t = -3.42 sec and t = 1.789 sec
As negative time is not possible so time will be 1.789 sec
Answer: I am not sure I think it D
Explanation: Wind is the movement of air, caused by the uneven heating of the Earth by the sun and the Earth's own rotation
Answer:
Explanation:
Frequency is given by
Let the initial frequency be denoted by
When M is 2M then
Therefore, the final frequency is
Power = work / time
Power = 200J / 10 seconds
Power = 20 watts
Answer:
Flow; Impressed
Explanation:
The electric charge can be think of as the flow rate of electrons in a certain area or point. Voltage is a difference in electrical potential, it makes charges to move in the electrical conductor, therefore it is impressed across a circuit