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Why do chefs prefer copper-bottom pans for cooking?
It is a good heat conductor
Which unit is standardly used to measure angular displacement?
Radian
What is rotational motion?
An object that rotates arounds its axis
Explain what is Translational Motion?
An object that moves from one place to another.
Which simple machine is most efficient for lifting heavy objects vertically?
Pulley
Which combination of simple machines is found in a pair of scissors?
Lever and a Wedge
What is the turning force that causes rotation called?
Torque
What type of motion is mainly utilized in a bicycle wheel just turning?
Rotational Motion
TRUE or FALSE: Rotational motion is important in machines because it removes the need for force.
FALSE
Compound machines have a goal to minimize ___ ___ and maximize output work.
Energy loss
What happens to your angular velocity if you pull your arms inwards?
It increases
Which physics principle is primarily responsible for the cooling effect of a household refrigerator?
Thermodynamics
What physics concept explains why seatbelts save lives during a sudden car crash?
Inertia
What machine that has a physics concept that utilizes soundwave to see internal objects?
Ultrasound
What must the dancer do to achieve maximum angular velocity while spinning?
Pull arms close to body
What is the rate of change of angular velocity?
Angular acceleration
