Answer:
h = 69.6 m
Explanation:
Data:
- Vo = 25 m/s
- t = 2.0 s
- g = 9.8 m/s²
- h = ?
Formula:
Replace and solve:
The building has a height of <u>69.6 meters.</u>
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Answer: 20 m/s in 2 significant figures.
Explanation:
Initial velocity (u) = 0 m/s
Acceleration by gravity (a) = 9.81 m/s^2
Displacement (s) = 20m
Final velocity (v) = ?
Now, use formula
v^2 = u^2 + 2 * a * s
or, v^2 = 0^2 + 2 * 9.81 * 20
or, v = square root of( 2 * 9.81 * 20 )
So, v = 20 m/s in 2 significant figures.
A microwave uses heat waves that keeps in side the machine to heat up the cup of water
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Answer:4.32Nm
Explanation:
The magnitude of the torque will be the product of the force and its perpendicular distance from the force.
Force = 27N
Perpendicular distance = 16cm = 0.16m
Torque = 27×0.16
Torque = 4.32Nm