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A skater embeds a firecracker in large snowball and pushes it across a frozen pond at 7.6 m/s. The firecracker explodes, breaking the snowball into two equal-mass chunks. One chunk moves off at 9.3 m/s at 19° to the original direction of motion. Discover the speed and direction of the second chunk.
A 3m-long rigid beam with a mass 140 kg is supported at each end. An 75 student stands 2m from support 1.
eight uncharged capacitors with equal capacitances are combined in series. the combination is connected to a 7.45-v
an electron and a proton are fixed at a separation distance of 931 nm. find the magnitude and direction of the electric
in a friendly game of handball you hit the ball essentially at ground level and send it toward the wall with a speed of
A basketball player grabbing a rebound jumps 70 cm vertically. How much total time (ascent and descent) does the player spend (a) in the top 11.9 cm of this jump and (b) in the bottom 11.9 cm.
a cd has a mass of 16.4 g and a radius of 6.12 cm. when inserted into a player the cd starts from rest and accelerates
A1.84 m diameter vat of liquid is 3.38 m deep. The pressure at thebottom of the vat is 2.07 atm. What is the mass of the liquid in the vat
a ray of light incident upon a mirror makes an angle of 33.9° with the mirror. What is the angle between the incident ray and the reflected ray
A lightbulb has a resistance of 230? when operating with a potential difference of 180V across it. What is the current in the lightbulb? mA
We all sound like great singers in the shower, due to standing waves. What are the wavelengths of the first two overtones for this shower
A place kicker should kick a football from a point 32 m (about 35.0 yd) from the goal, and the ball should clear the crossbar, which is 3.050 m high. When kicked, the ball leaves the ground with a speed of 21.0 m/s at an angle of 49° to the horizo..
a proton and an alpha particle which has twice the charge and four times the mass of the proton are each accelerated
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