Centripetal acceleration of the car
An Indy car with a speed of 125 km/h goes around a level, circular track with a radius of 1.30 km. What is the centripetal acceleration of the car?
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0.144 kg baseball is pitched horizontally at 33.0 m/s. After it is hit by the bat, it moves at the same speed, but in the opposite direction. What was the change in momentum of the ball?
A rocket engine emits 3.04 x 104 J of sound energy every second. The sound is emitted uniformly in all directions. What is the sound intensity level, measured relative to the threshold of hearing, at a distance of 120 m away from the engine? Hint:
A car travels at a constant speed around a circukar track whose radius is 2.6 km. The car goes once aroud the track in 360s. what is the mangitude of the centriprtal acceleration of the car?
Yusef pushes a chair of mass Yusef pushes a chair of mass = 55.0 across a carpeted floor with a force (the subscript 'p' here is lowercase and throughout the question) of magnitude = 168 directed at = 35.0 below the horizontal. The magnitude of th
Light strings are wound in opposite directions about the cylinders, and identical masses m are hung from the ends, as shown. a) Which way will the system move? b) What is the acceleration of each of the hanging masses?
A man drops a rock into a well. He hears the sound of the splash 3.2 seconds after he releases the rock from rest. The speed of sound in air (at the local ambient condition) is 338 m/s.
An aspirin tablet has a mass of 340 mg. If the aspirin could be converted completely into thermal energy, how many miles would the car go on a single tablet?
A simple harmonic oscillator consists of a block of mass 2.20 kg attached to a spring of spring constant 260 N/m. When t = 1.60 s, the position and velocity of the block are x = 0.128 m and v = 3.170 m/s. (a) What is the amplitude of the oscillat
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