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A 2.6kg block slides along a frictionless surface at 2.0m/s . A second block, sliding at a faster 5.0m/s, collides with the first from behind and sticks to it. The final velocity of the combined blocks is 3.3m/s. What was the mass of the second block?
A student sits at rest on a piano stool that can rotate without friction. The moment of inertia of the student-stool system is 3.5 kg*m^2. Calculate the initial and final kinetic energy of the system
What is the resistance of the light bulb? A light bulb is wired in series with a 120-? resistor, and they are connected across a 120.0-V source
When a synchronous motor is running at synchronous speed, the damper windingproduces(A) damping torque.(B) eddy current torque.(C) torque aiding the developed torque.(D) no torque.
A closed container with volume of 7.80 L holds 9.6 g of liquid helium at 3.00 K, What is the final pressure inside the container
An air-track glider is attached to a spring. The glider is pulled to the right and released from rest att = 0. what is the amplitude of the ossilation
Monochromatic light falls on two very narrow slits0.042mm apart. Successive fringes on a screen6.50m away are 8.4cm apart near the center of the pattern. Determine the frequency of the light.
Over the course of a multi-stage 4080-km bicycle race, the front wheel of an athlete's bicycle makes 2.00 106 revolutions. How many revolutions would the wheel have made during the race
The load and the spring are taken down. Two people pull in opposite directions on the ends of the spring, each with a force of 206 N. Find the length of the spring in this situation
A double convex lens (convex on both sides) is made of glass with an index of refraction of 1.65. What is the magnitude of the larger radius
Two sinusoidal waves, identical except for phase, travel in the same direction along a string, producing the net wave y(x,t)=(6.0 mm)sin(24.0x -2.0 s-1 * t+0.320 rad), with x in meters and t in seconds. What is the wavelength ? of the two waves? W..
Two concentric hollow metal spheres have radii r1=1.50E-2 m and and r2=6.80E-2 m. At a point 9.80E-2 m from the center of the spheres, the electric field is directed outward and has a magnitude 2.08E+2 N/C. At a distance 5.80E-2 m from the center,..
A 0.500 kg hammer is moving horizontally at 6.50 m/s when it strikes a nail and comes to rest after driving it 1.00 cm into a board. Calculate the duration of the impact
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