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In a game of billiards, the cue ball is traveling eastward when it strikes a second ball that is initially at rest. After the collision, the cue ball moves at 4.79 m/s, 25 degress south of east, and the second ball's speed is 3.07 m/s. At what angle (north of east) does the second ball travel? Assume each ball has a mass of 162 g.
What was the speed of the cue ball prior to the collision?
Is the kinetic energy of the colliding balls conserved, yes or no? (Ignore the rotation of the balls.)
A helium atom (m= 6.6465 x 10^-27 kg) collides elastically with an oxygen atom (m = 2.6560x10^26kg) at rest. Find the speed of the oxygen atom
A skier, weighing 453 n, is skiing down a slope that has an incline of 29 degrees above the horizontal. Compute the acceleration of the skier (coefficient of kinetic friction between the skis and snow is 0.21)
A 171 kg block of ice at 0.0°C is placed in a large lake. The temperature of the lake is just slightly higher than 0.0°C, and the ice melts very slowly, What is the entropy change of the universe
An electron is trapped within a sphere whose diameter is 5.90 × 10-15 m, What is the minimum uncertainty in the electron's momentum
An isolated conductor of arbitrary shape has a net charge of +1.2 10-5 C. What is the charge on the cavity wall
Give the force exerted on the bag, to validate your reply.
Fusion reactors attempt to utilize the same nuclear reaction that occurs within the sun. Two deuterium nuclei will combine together to form helium if they are close enough, How fast must the deuterium nuclei be going to touch
A wheel with a tire mounted on it rotates at the constant rate of 2.87 times a second. find the tack's tangential speed
A flat surface with area 1.6 m2 is in a uniform electric field of 560 N/C. What is an electric flux through the surface when it is oriented as follows.
A 11.2 kg object oscillates at the end of a vertical spring that has a spring constant of 1.90 104 N/m. Calculate the frequency of the dampened oscillation
Iodine-131 has a half-life of 8 days while iodine-125 has a half life of 60 days and are both used therapeutically for different purposes. what percentage of the iodine-125 has decayed
question1consider an array of parallel wires with uniform spacing of 1.30 cm between centers. in air at 20.0degc
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