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The crankshaft in a race car goes from rest to 3480 rpm in 2.7s.
A. What is the crankshaft's angular acceleration?
B. How many revolutions does it make while reaching 3480 rpm?
What is the frictional force
Calculate the Reynolds number for 25C water flow in a 1-in nominal diameter sanitary pipe at 0.5 kg/s
A Van de Graaff accelerator is essentially a parallel plate capacitor. Such a machine is changed by an electrical potential of 2.5 x 10^6 volts. What is the energy density stored in the field
An x-ray beam with wavelength 0.210nm is directed at a crystal. As the angle of incidence increases, find the spacing d between the planes of the crystal
An object 1.40 cm high is held 3.00 cm from a person\'s cornea, Find the magnitude of the radius of curvature of the convex mirror formed by the cornea
A 100 arrow is shot vertically from a bow whose efficient spring constant is 500. If the bow is drawn 75 before shooting the arrow, to what height does the arrow rise .
A college campus features a large fountain surrounded by the circular pool. Two students start at the northernmost point of pool and walk slowly around it in opposite directions.
A 1500kg weather rocket accelerates upward at 10m/s2. It explodes 1.9s after liftoff and breaks into two fragments, What was the speed of the heavier fragment just after the explosion
The longest recorded pass in an NFL game traveled 86 yards in the air from the quarterback to the receiver.Assuming that the pass was thrown at the optimal 45 angle, what was speed at which the ball left the quarterback's hand.
A woman rides a carnival Ferris wheel at radius 16.0 m, completing 4.40 turns about its horizontal axis every minute. What are (a) period of the motion, and the magnitude of her centripetal acceleration at (b) highest point and (c) lowest point.
The rear window of a van is coated with a layer of ice at 0°C. The density of ice is 917 kg/m3, What is the maximum thickness of ice above this area that the defroster can melt in 4.4 minutes
A singly ionized helium atom (He+) has only one electron in orbit about the nucleus. What is the radius of the ion
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