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The uniform rod AB of weight W is released from rest when ß = 70°. Assuming that the friction force between end A and the surface is large enough to prevent sliding, determine immediately after release
(a) the angular acceleration of the rod,
(b) the normal reaction at A, (c) the friction force at A.
A 137-cm-long wire is made by welding a 1.3-mm-diameter, 26-cm-long copper wire to a 0.31-mm-diameter, What is the resistance of the composite wire
For the ionospheric model in Problem 7.5, calculate the differential delay at the opposite extremes of the transmitted frequency spectrum for a wave with center frequency 12.4 GHz and with a bandwidth of 400 MHz.
A canon sends a shell of mass 35.0 kg into air with an initial speed of 135 m/s, in the direction of 55° above the horizontal. What is the work delivered by the canon on the shell
A 10 g bullet shot from a gun is travelling with a speed of vo = 100 m/s when it hits and embeds itself in an mA = 500 g wooden block that initially sits at rest on a horizontal, What is the maximum length
Lunar astronauts placed a reflector on the moon's surface, off which a laser beam is periodically reflected. What percent accuracy is this
Initially at rest, a small copper sphere with a mass of 3.03·10-6 kg and a charge of 5.05·10-4 C is accelerated through a 6990-V potential difference before entering a magnetic field of magnitude 4.01 T
If the coefficient of kinetic friction between the roof and the box is 0.51, determine with what speed should you push the box to have it gently come to rest right at the edge of the roof
A water filled pipe has water flowing at 5.70 m/s in a section of pipe where the diameter is 19.2 cm, What is the volume flow rate through the smaller pipe
You're standing on a carousel 1.34 m from its axis of rotation. What minimum distance would you need to walk to arrive at a position where your contribution to the total moment of inertia has doubled?
A 0.07-kg lead bullet traveling 296 m/s strikes an armor plate and comes to a stop. If all of the bullet's energy is converted to heat that it alone absorbs
on the moon the acceleration due to gravity is 16 of earths. a ball is thrown straight up on the moon and it takes t
During the initial charge of a capacitor up to its max charge Vo, the initial energy stored in the capacitor is 1/2(CVo)^2 . Show mathematically that this energy is equal to the total energy dissipated as heat in the resistance through which discharg..
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