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A 1.05 kg mass is attached to a light cord that is wrapped around a pulley of radius 2.65 cm, which turns with negligible friction. The mass falls at a constant acceleration of 2.65 m/s2. Find the moment of inertia of the pulley.
A 2000-kg horizontal beam is supported at each end. A 160-kg load rests a quarter of the way from one end if the beam and 120 kg cargo is 1/3 from the other end. What is the vertical force on each of the supports.
If the electron drops back to the ground state, will a photon be emitted? If yes, what would be the energy or wavelength of the emitted photon compared to that of the absorbed photon?
The intake to a hydraulic turbine installed in a flood control dam is located at an elevation of 10 m above the turbine exit. what is the mass flow rate fo water, in kg/s
The light source for a double slit experiment has a wavelength of 590 nm. The slit separation is 0.12x10^-3. A screen is placed at a distance of L from the slits. Find the width of the central bright fringe
A girl with mass m1 and a sled with mass m2 are on the frictionless ice of a frozen lake, How far from the girl's initial position do they meet
An object is oscilliating on a spring with a period of 4.60 s . At time t= 0.00 s the object has zero speed and is at x = 8.30 cm
three charges shown in figure from an equilateral trangle with 4.9 cm long sides what is the electrical potentialat the point indicted with the dot
The temperature of a black body is increased by 10.5 percents. By how many percents did the wavelength of the peak change
A 12 kg mass starts from rest and slides down an inclined plane 8.0 10-1 m long in 0.9 s. What net force is acting on the mass along the incline?
A student on a piano stool rotates freely with an angular speed of 3.05rev/s . The student holds a 1.45kg mass in each outstretched arm, 0.779m from the axis of rotation. Calculate the final kinetic energy of the system
A 25g bullet pierces a sand bag 27cm thick. If the initial bullet velocity was 64 m/s and it emerged from the sandbag with 35m/s, what is the magnitude of the friction force
A 50.0 kg box is resting on a horizontal floor. A force of 250 N directed at an angle of 26.0 degrees below the horizontal is applied to the box. What is the minimun coeffiecient of static friction
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