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A regulation hockey puck of mass 675 g is sliding right at 1.66 m/s. It collides with a plastic hockey puck of mass 128 g that is initially at rest. After the collision, the plastic puck is moving 2.21 m/s to the right. What is the velocity (including magnitude and direction left/right) of the regulation hockey puck after the collision?
A light spring with a spring constant of 80.0 N/m rests vertically on a table. A 2g balloon is filled with helium (0°C and 1 atm pressure) to a volume of 5.00 m3 and connected to spring, causing the spring to stretch and expand. How much does the ..
A stand, string, a paper or plastic cup, a nail, a roll of paper towels or similar sized paper, coloured sand, or some other dry powdery product, and a ruler or measuring tape.
A 210, 50-cm-diameter turntable rotates on frictionless bearings at 67. A 25 block sits at the center of the turntable. A compressed spring shoots the block thoroughly outward next to a frictionless groove in the surface of turntable.
A person of mass M lies on the floor doing leg raises. His leg is 0.85m long and pivots at the hip, How far does the entire body's center of mass rise
A 80 g, 33-{rm cm}-long rod hangs vertically on a frictionless, horizontal axle passing by its center. A 11 g ball of clay traveling horizontally at 2.5 m/s hits and sticks to the very bottom tip of the rod.
A small block with mass 0.0450kg slides in a vertical circle of radius 0.600m on the inside of a circular track. How much work was done on the block by friction during the motion of the block from point A to point B
Light from a helium-neon laser (?=633nm) is used to illuminate two narrow slits. What is the spacing (in mm) between the slits
An oscillating LC circuit has a current amplitude of 7.50 mA, a potential amplitude of 250 mV, and the capacitance of 220 nF. What are (a) the period of oscillation.
Imagine that you send out a light flash at t=6.0 s as registered by your clock, At what time did your brother actually make this silly face and How far is your brother away from you
A convex mirror with a radius of curvature of 32.0 cm forms a 1.20 cm tall image of a pencil at a distance of 13.6 cm behind the mirror. Calculate the object distance for the pencil and its height
A motor attached to a 120 V/60 Hz power line draws an 8.10 A current. Its average energy dissipation is 810 W. What is the motor's resistance
An extremely large nonconducting sheet creates equipotential surfaces, which are planes. What is the surface charge density on the sheet
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