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A car starts a race from rest on a circular track and has a tangential speed of 43 m/s at the end of the third lap. The track has a radius of 91 m. If it has constant angular acceleration, what is the magnitude of its tangential acceleration?
An aerosol can of whipped cream is pressurized at 440kPa when it's refrigerated at 3 C. The can warns against temperature in excess of 50 C. What is the safest pressure for the can .
a small dog sits 3.0 m in front of a plane mirror. where is the dog's image in relation to the mirror
A solid, uniform sphere of mass 2.0 kg and radius 1.7 m rolls without slipping down an inclined plane of height 1.7 m. What is the angular velocity of the sphere
A standing wave on a string is produced when one end is fixed and the other is driven by a 76 Hz oscillator, what is the total length of the string in meters
A spacecraft moving away from Earth emits a 4990 Hz signal. A scientist on Earth measures the signal to be 4989 Hz. What is the speed of the spacecraft relative to Earth
A converging lens with a focal length of 5.0cm is to the left of a second identical lens. When a feather is placed 13cm to the left of the first lens, What is the separation between the lenses
A 7.80-g bullet moving at 640 m/s penetrates a tree trunk to a depth of 6.1 cm. find the average frictional force that stops the bullet
On a hot summer afternoon, Keith is out fishing in a rowboat when he decides to jump into the water and go for a swim, what is its velocity in the opposite direction after he jumps
A 1.6 kg object oscillates with simple harmonic motion on a spring of force constant 400.0 N/m. What is the total energy of the object and the spring
A crate is dragged 4.0m along a rough floor with a constant velocity by a worker applying a force of 450N to a rope at an angle of 30? to the horizontal. What is the total work done on the crate
The transmission axis of the analyzer makes an angle of 32.0° with the axis of the polarizer. What fraction of the original light is absorbed by the analyzer
A person is drinking water from a plastic bottle. When the water level is 6cm from the top of the bottle, the person blows across the top producing a sound
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