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A lead bullet, traveling at 350m/s strikes a target and is broughtto rest. what would be the rise in temperature of the bullet if there were no heat loss to the surroundings? does the bulletmelt?
A boat with speed of 10m/s, in still water, tries to cross a river with a current flow of 2.0m/s, and is 100m wide. how far down river does it land
On a workday the average decibel level of a busy street is 69 dB, with 102 cars passing a given point every minute. If the number of cars is condensed to 39 cars every minute on a weekend, what is the decibel level of street.
A dentist's drill accelerates from rest at 600rad/s2 for 2.00s and then runs at constant angular velocity for 8.1s . Through how many total revolutions has the drill turned
block 1 has mass m1 = 470 g, block 2 has mass m2 = 510 g, and the pulley is on a frictionless horizontal axle and has radius R = 5.2 cm. What is the pulley's rotational inertia
A square, single turn coil 0.20m on a side is placed with its plane perpendicular to a constant magnetic field. An emf of 18mV is induced in the coil winding as the area of the coil decreases at the rate of 0.10m2/S. What is the magnitude of the m..
A 10cm-diameter disk emits light uniformly from its surface. 20rm cm from this disk, along its axis, is an 8.0cm-diameter opaque black disk, What is the diameter of the completely dark part of this shadow
Some GRIN material is made in the form of a doughnut. The inside diameter (the diameter of the hole in the doughnut) is 34 cm, What should be the highest, and the lowest refractive index of the material
A certain raft is 2.5 m long, 0.55 m wide, and 14 cm deep. If the raft itself has a mass of 15.6 kg, what is the maximum mass it can support in fresh water
When a voltage of 12.0 V is applied across the two ends of a cylindrical wire of length l, radius r and resistivity ?, an electric current of 1.0 A is measured. Then the same voltage is applied to a second wire with length of 2l, radius of 5r and res..
what is significant about the vertical velocity when the projectile is at its maximum height?do we consider air
a particle with a mass of 2.0times10-5 and a charge of 2.3 is released in a parallel plate uniform horizontal electric
consider a system of two lenses. The first lens is a converging lens with a focal length f1=21.4 cm. compute is the image real or virtual
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