The average speed is a scalar quantity. The average speed of the skier is 10 km/hrs.
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What is the average speed?</h3>
It is calculated by dividing the total distance by the total time elapsed.
The
Where,
= average velocity
= displacement = 7.5 km
= change in time = 45 min = 0.75 hours
Put the values in the formula,
Therefore, the average speed of the skier is 10 km/hrs.
Learn more about average speed:
https://brainly.in/question/32459982
Answer:
3.3619 Nm
54.27472 rad
182.46618 J
86.88 W
Explanation:
= Initial angular momentum = 7.2 kgm²/s
= Final angular momentum = 0.14 kgm²/s
I = Moment of inertia = 0.142 kgm²
t = Time taken
Average torque is given by
Magnitude of the average torque acting on the flywheel is 3.3619 Nm
Angular speed is given by
Angular acceleration is given by
From the equation of rotational motion
The angle the flywheel turns is 54.27472 rad
Work done is given by
Work done on the wheel is 182.46618 J
Power is given by
The magnitude of the average power done on the flywheel is 86.88 W
Answer:
1: toward the normal
2:away from normal
3: red because the index of refraction ( the ratio of the speed of light in a vacuum to the speed of light in a material) is increased for the slower moving waves
Answer:
Option B
Explanation:
The electrons flow from negative terminal of a battery to the positive terminal because as the charge of electron is negative, it will get repelled by the negative terminal of the battery
Conventional flow actually assumes that the current flows out of the positive terminal, through the circuit and into the negative terminal of the battery
It actually says that direction of flow of current is in opposite direction to the direction of flow of electrons
The direction of current will not change even a resistor is placed in the circuit and it generates a potential difference across the resistor
But the current tries to move in such a way in which there will be less resistance to the flow
Hey there! :D
Yes, indeed! Magnetic is a form of energy. It pushes or pulls to forces together. A lot of this energy is through waves, and opposite and like poles.
I hope this helps!
~kaikers
