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Assuming frictionless conditions, a table has a hanging mass, m1, over a pulley at the left side and another hanging mass, m2, over a pulley on the right side. These two masses are connected to a third mass, m3, resting on the table surface. Light cords connect m1 to m3 and m3 to m2 so that all three move together. a) if m1 = .2kg, m2 = .5kg, & m3 = .3kg, what will be the acceleration of the system? b) If m1 = .45kg, & m2 = .3kg, & m3 = .25kg what is the new accelration of the system?
A Texas cockroach of mass 0.123 kg runs counterclockwise around the rim of a lazy Susan (a circular disk mounted on a vertical axle) that has a radius 16.6 cm, What is the angular speed of the lazy Susan after the cockroach stops
To fit a contact lens to a patient's eye, a keratometer can be used to measure the curvature of the cornea-the front surface of the eye. Determine the radius of curvature of the cornea
A physical pendulum is composed of a sphere whose center of gravity is attached to a thin rod. The sphere has a moment of inertia of 2/5 MR2. The period of the physical pendulum is
A metallic sphere has a charge of +4.2 nC. A negatively charged rod has a charge of -6.0 nC. When the rod touches the sphere, 9.8 109 electrons are transferred. What are the charges of the sphere and the rod now?
On a sunny morning in a ?eld, the atmospheric pressure is 10N/m and the temperature is 279 K. How much heat must be added to the air in the balloon to initiate the ?ight
A 2.8 kg block slides along a frictionless horizontal with a speed of 5.5 m/s. After sliding a distance of 8m, the block makes a smooth transition to a frictionless ramp inclined at an angle of 43 degrees to the horizontal. The acceleration of gravit..
A loop of wire of area 2 m2 is placed with its plane perpendicular to a magnetic field of 3 T. what is the induced emf
The 1st man to orbit the Earth was Soviet cosmonaut Yuri Gagarin, on April 12, 1961. What was the spacecraft's speed at this point in its orbit
A 2.00 meter long horizontal plank whose mass is 3.00 kg is placed so that the very end (the right end) rests on a retaining wall. Find the force acting on the board by the tailgate
A person's prescription for her new bifocal glasses calls for a refractive power of -0.461 diopters in the distance-vision part, & a power of +1.83 diopters in the close-vision part. Compute the near & far points of this person's uncorrected visio..
A satellite has a mass of 95 kg and is located at 1.99 106 m above the surface of Earth. What is the magnitude of the gravitational force on the satellite
A 2.00-mol sample of hydrogen gas is heated at constant pressure from 302 K to 414 K. Calculate the increase in its internal energy
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