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Question: A 0.160-kg hockey puck is moving on an icy, frictionless, horizontal surface. At t = 0, the puck is moving to the right at 3.00 m/s.
(a) Calculate the velocity of the puck (magnitude and direction) after a force of 25.0 N directed to the right has been applied for 0.050 s.
(b) If, instead, a force ofl2.0 N directed to the left is applied from t = 0 to t = 0.050 s, what is the final velocity of the puck?
A pitcher claims he can throw a 0.160-kg baseball with as much momentum as a 2.50-g bullet moving with a speed of 1.50 103 m/s
A fountain shoots a jet of water 10 m into the air. The fountainhas a round nozzle of diameter 1.84 cm at ground level, fed by a pump located 6 m belowground through a round pipe of diameter 5.19 cm.
Three astronauts, propelled by jet backpacks, push and guide a 114 kg asteroid toward a processing dock, exerting the forces, with F1 = 32 N, F2 = 52 N, F3 = 39 N, θ1 = 30°, and θ3 = 60°. What is the (a) magnitude and (b) angle (measured relative ..
Each of two very long, straight, parallel lines carries a positivecharge of 44.00 μC/m. The distance d betweenboth lines is 3.30 m. What is the magnitude of the electric field at a point equidistant from the lines, with adistance 2d from both lines?
Ilya and Anya each can run at a speed of 8.70 \rm{mph} and walk at a speed of 3.60 \rm{mph}. How long does it take Ilya to cover the distance
A container holds a gas consisting of 1.05 moles of oxygenmolecules. One in a million of these molecules has lost a singleelectron. What is the net charge of the gas
An infinitely long, hollow, rectangular pipe runs parallel to the x axis in the xy plane spanning a width y=0 to y0, and a height z=0 to z0. find an expression for the potential inside the pipe
Westerly winds coming off the Pacific Ocean rise over the Rocky Mountains, which rise to a height of approximately 15,000 ft (580 hPa). The air on the western side of the mountain range is at 800 hPa (T = 70F, r = 0.75), and will subside on the ea..
The work function for sodium is 2.46 eV. What is the stopping potential, What is the cut-off wavelength for the emission of electrons from a sodium surface
A student has a stretched string on density u and length L under a tesnion F. A standing wave of frequency f = 4/4 squareroot, Calculate the length of the string
If 20 grams of hot water at 80 C is poured into a cavity in a very large block of ice at 0 C, what will be the final temperature of the water in the cavity? How much ice should melt in order to cool the hot water down to this temperature.
A total of 31 bright and 31 dark Newton's rings (not countingthe dark spot at the center) are observed when 550 nm light fallsnormally on a planoconvex lens resting on a flat glass surface. How much thicker is the center than the edges
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