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two blocks connected by a rod going down a 30.0 degree slope, bigger mass 3.30kg is first and the smaller 1.65kg is following. coefficiant of kinetic friction is 0.226 for smaller block and 0.113 for larger block. calculate the common acceleration of the blocks?
A rocket with a mass of 750 grams is launched straight up. It achieves a velocity of 25.00 m/s in 2.00 seconds, The average net force on the rocket is
A sphere completely submerged in water is tethered to the bottom by a string. The tension in the string is 1/5 (aka one-fith) the weight of the sphere. What is the density of the sphere
A small but measurable current of 1.2*10^-10 A exists in a copper wire whose diameter is 2.5mm compute the current density and the electron drift speed.
Two points are given in polar coordinates by (r,?) = (3.0 m , 40.0°) and (r,?) = (5.0 m, -40.0°), respectively. What is the distance between them
A conducting sphere that carries a total charge of +11 µC is placed at the center of a conducting spherical shell that also carries a total charge of +11 µC, Determine the charge on the inner surface of the shell
A light bulb is connected to a 240-V wall socket. The current in the bulb depends on the time t according to the relation I = (2.828 A) sin[(345.4 Hz)t]. What is the average power delivered to the light bulb
Four identical masses of 2.7 kg each are located at the corners of a square with 1.5 m sides. What is the net force on any one of the masses
A new block is attached to the first block. The new block is made of a different material and has a coefficient of static friction ? = 0.73. (When there is no friction the acceleration of the first block is 4.29 m/s2)
What is the change in kinetic energy of the puck
A sound wave travels in air with frequency 1372 Hz. (Assume the temperature of the air is 20 degrees C). If we can hear the sound at a level of 25 dB, what is its intensity? (The minimum intensity audible to humar ear is I= 1.0 x 10^-12 W/m^2). What ..
A soccer ball m = 0.9 kg dropped from a height h = 4.6 m bounces off the grass. Write an expression for how high hf the soccer ball bounces
When a battery is connected to the plates of a 6.00-µF capacitor, it stores a charge of 108.0 µC. What is the voltage of the battery? If the same capacitor is connected to another battery and 90.0 µC of charge is stored on the capacitor, what is ..
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