Answer:
v = 2.41 m/s
Explanation:
Here net force on the Skater + snowball is zero
so here we can use momentum conservation for skater + snowball
now we have
so the final speed of skater will be 2.41 m/s
Examples of medium are solid ,liquid ,and gas basically matter. :D
A cold front phenomenon characterized by cold air pushing into much warmer air mass. The cold air being more dense than warm air is able to effectively push it forward usually at a fast pace.
When the cold front is passing through an area, there are gusts of wind which usually sweep right across the ground and raise the dust in dry areas, there is a sudden drop in temperature with moderate to heavy rain sometimes with thunder, lightning and hail.
The warm air moving ahead of the cold front produces cumulus or cumulonimbus clouds with thunderstorms as atmospheric pressure falls then slowly rises again after the cold front has passed.
Temperatures are noticeably cooler in a given area after a cold front has passed, which is followed by replacement of cumulus clouds by stratus and stratocumulus clouds and clear skies.
The heat from the fire melting the wax helps close the circuit.
Depending on which type of motor you're talking about, but the first 3 are true. A stronger magnetic field in a DC motor will slow it down but increase its torque.
The amount of current in the motor will control the magnetic fields and therefore affect the speed (and torque). In an induction motor, the rotational speed is given by
where f is the line frequency and p is the number of poles. Thus fewer poles makes it go faster.