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An 9 kilogram package in a mail-sorting room slides 2.50 meter down a chute that is inclined at 54.4 degree below the horizontal. The coefficient of kinetic friction between the package and the chute's surface is 0.42. Determine the work done on the package by friction.
Determine the work done on the package by gravity.
Determine the net work done on the package.
A 2000 kg statue falls into a circular jacuzzi with a diameter of 5 m, What is the average density of the statue
a single conducting loop of wire has an area of 7.1times10?2 m2 and a resistance of 120 ohms. perpendicular to the
Jack and Jill ran up the hill at 3.5m/s . The horizontal component of Jill's velocity vector was 2.5m/s . What was the angle of the hill? What was the vertical component of Jill's velocity?
A long air-core solenoid of 240 turns has a length 0.40 m andradius 3.0 cm. It carries a current of 4.0A. find the magnetic field in the solenoid
A 22.0 F capacitor is charged by a 155.0 V power supply, then disconnected from the power and connected in series with a 0.220-mH inductor. Calculate the oscillation frequency of the circuit
Two billiards of equal mass undergo a perfectly elastic head on collision. if the mass of ball 1 was initially was initially 5.00 m/s, and that of ball 2 was 6.00 m/s in the opposite direction, what will be their speeds after the collision? ball 1 m/..
A woman with a mass of 70 kg climbs a set of stairs that are h = 3 m high. How much gravitational potential energy does she gain
at a certain location the earth has a magnetic ?eld of 8.3 times 10-5 t pointing in the northward direction at 44?
In the nuclear-fission reaction, neutrons are emitted, usually some number of neutrons between 0 and 5. The process is thought to be random. First calculate the total number of fissions observed. Then calculate the average number of neutrons per f..
A lump of putty with a mass of 0.210 kg and a speed of 0.830 c collides head-on, What is the mass of the system after the collision
A radioactive material produces 1200 decays per minute at one time, and 6 h later produces 300 decays per minute. What is its half-life?
You're an optometrist, mounting a projector at the back of your 4.2m -long exam room, 2.6 m above the floor. At what height should you center the pattern on the wall
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