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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 bulldozer pushes a large rock, and the two move forward together. The bulldozer does 1500 J of work on the rock. How much work does the rock do on the bulldozer
An electron is confined in a box 1.0 x10^-9m in width. What is the uncertainty in its speed
A swimming pool has dimensions 30.0 mmultiplied by 13.0 m and a flat bottom. what is the force caused by the water on the bottom
A hockey puck slides over ice with ?k = 0.013. What initial speed should the puck have so it travels the 40m length of the rink
after enough time has passed to allow the ice cube and water to come to equilibium, what is the tempreture of the water
What is the tangential acceleration of a bug on the rim of a10-inch diameter disk if the disk moves from rest to an angular speed of 99 rev/min in 3.0 s? When the bug in the previous problem is at his final speed of 99 rev/s , what is the tangential ..
consider a 79.0-kg man standing on a spring scale in an elevator. starting from rest the elevator ascends attaining its
An object is thrown vertically upward with aspeed of 5 m/s. It lands on the floor with a speed of 6 m/s.From what height was the object thrown?
A freight company uses a compressed spring to shoot 1.7 kg packages up a 1m high frictionless ramp into a truck. The spring constant is 241 N/m and the spring is compressed 33 cm.
a parcel of air moving in a straight tube with a constant acceleration of -3.55 ms2 and has a velocity of 14.5 ms at
A charge q= +5.62 micro Coulons is located at the center of a regular tetrahedron ( a four- sided surface), Find the total electric flux through the tetrahedron
The power output of a sound system is increased by a factor of 25. By what factor should you adjust your distance from the speakers
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