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two blocks are suspended over a pulley. The pulley can be treatedas a uniform solid cylindrical disk. The downward acceleration ofthe 44.0-kg block is observed to be exactly 1/3 the accelerationdue to gravity. Noting that the tension in the rope is not the sameon each side of the pulley, find the mass of the pulley.
According to Equation 20.7, an ac voltage V is given as a function of time t by V = V0sin(2?f t), what is the smallest value of the time at which the voltage equals one-fourth of the peak value
A meterstick (L = 1 m) has a mass of m = 0.121 kg. Initially it hangs from two short strings: one at the 25 cm mark and one at the 75 cm mark. What is the tension in the left string?
A 8 g bullet has a speed of 180 m/s and embeds itself into a 500 g block. What is the speed of the block after the collision
A car travels 20km at an average speed of 80km/hr and then stops for 15 mins to get fuel. It then continues on the same direction for another 20 km at an average speed of 40km/hr. What is the average acceleration of the 40km trip.
a neutron passes two points 1.0 meter apart in 1.0 microsecond. calculate the neutrons energy in units of both joules j
a string is tied between two walls 8 m apart. which of the following is not an allowed standing wavelength for this
A ball is thrown and hits a wall with velocity Vo, and bounces off the wall with velocity Vf... Given contact time, what is the avg force acting on the ball
explain What is the magnitude of the electric field next to the sheet.
A weightlifter's barbell consists of two 15-kg masses on the ends of a 20-kg rod 1.6 m long. find the magnitude of the barbell's angular momentum
A charge of -2.205%u03BCC is located at (2.630m , 4.253m ), and a charge of 1.765%u03BCC is located at (-2.793m , 0). Find the electric potential at the origin
An electric field ofmagnitude 11000 N/C and directed upward perpendicular to theEarth’s surface exists on a day when a thunderstorm is brewing. A truckthat can be approximated as a rectangle 2.7 m by 3.2 m is traveling along a road that isinclined..
As a hiker in Glacier National Park, you are looking for a way to keep the bears from getting at your supply of food. What will be the acceleration of the bags when you let go of the anchor bag in m/s^2
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