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A bullet moving horizontally with a speed of 500 m/s strikes a sandbag and penetrates a distance of 10 cm.
a) After hitting the sandbag how much time does it take for the bullet to come to rest?
b) What is the average acceleration of the bullet while it is in the sand bag?
A hydraulic lift in a garage has two pistons: a small one of cross-sectional area 3.60cm2, If this lift is designed to raise a 3300-kg car, what minimum force must be applied to the small piston
A large wheel is coupled to a wheel with half the diameter. How does the rotational speed of the smaller wheel compare with that of larger wheel? How do the tangential speeds at the rims compare (assuming the belt doesn't slip).
The component of the external magnetic field along the central axis of a 50-turn coil of radius 5.6 cm increases from 0 T to 1.8 T in 3.6 s, what is the magnitude of the induced current in the coil
A particular organ pipe can resonate at 231 Hz, 385 Hz, and 539 Hz, but not at any other frequencies in between. Is it an open or a closed pipe? What is the fundamental frequency of this pipe.
A yo-yo has a rotational inertia of 1140 g·cm2 and a mass of 81.3 g. Its axle radius is 3.27 mm, and its string is 106 cm long, translational kinetic energy, rotational kinetic energy
Does current through a power supply increase when parallel bulbs are added? what is the current through the power source
Consider a circuit with two resistors in parallel; R1=10 Ohm and R2=5 Ohm, Calculate the total current flowing through the battery
A 36.4 kg child starting from rest slides down a water slide with the vertical height of 20.7 m. (Neglect friction.) What is the child's speed three-quarters of the way down.
A step-up transformer has 20 turns on the primary coil and 720 turns on the secondary coil. what input current and voltage are needed
A concave mirror ( f = 51 cm) produces an image whose distance from the mirror is one-third the object distance, determine the object distance and the image distance
What minimum coefficient of kinetic friction is required to bring the crate to a stop over a distance of 5.0 m along the lower surface.
A pencil (mass 5.8g and length 8.3cm) is at first balanced so that it is sitting vertically on a flat table. If the pencil then falls, find its angular velocity just before it strikes the tabletop. Assume that the mass of the pencil is distributed un..
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