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A permanent magnet is hung from a string ( balanced ) and pointed in an East - West orientation and released. Describe its motion. What causes the motion ? Why does it stop?
Two narrow slits 41 µm apart are illuminated with light of a wavelength 604 nm. What is the angle of the m=3 bright fringe in degrees.
How much would it cost just to keep the hot water inside the heater for one week? d)Suppose that you wrap the hot water heater on all sides with a 10 cm thick blanket of fiberglass insulation which has a thermal conductivity of 0.04 W/(m K).
Before starting this problem, review COnceptual Example 3. Suppose that hail described there bounces off the roof of the car with a velcity of +15 m/s. calculate the force exerted by the hail of the roof
A 2.8-kg piece of aluminum at 28.5 degrees celsius is placed in 1.0 kg of water in a Styrofoam container at room temperature (20 degrees celsius)
Atoms in a solid are in continuous vibrational motion due to thermal energy, What is the approximate period of oscillation of a typical atom
Fairgoers ride a Ferris wheel with a radius of 4.35m, the bottom of which is 1.75m from the ground. The wheel completes one revolution every 30s. A passenger drops his keys when he is three quarters of the way up and at the 10 o'clock position. Wh..
A small mailbag is released from a helicopter that is descending steadily at 2.04 m/s. (a) After 4.00 s, what is the speed of the mailbag? (b) How far is it below the helicopter? (c) What are your answers to parts (a) and (b) if the helicopter is ..
A styrofoam cooler (k = 0.030 W/(m·K)) has outside dimensions of 0.270 m by 0.230 m by 0.280 m, and an average thickness of 2.6 cm. About how long would it take for 1.60 kg of ice at 0 °C to melt in the cooler if the outside temperature is 30.0 °C..
A 55.0 kg circus performer oscillates up and down at the end of a long elastic rope at a rate of once every 8s. The elastic rope obeys Hooke's Law. By how much is rope extended beyond its unloaded length while the performer hangs at rest?
A person stands on a bathroom scale in a motionless elevator. When the elevator begins to move, the scale briefly reads only 0.82 of the person's regular weight, Find the direction of the acceleration
A 35.0-g bullet moving at 475 m/s strikes a 3.2-kg bag of flour that is on ice, at rest. The bullet passes through the bag, leaving at 225 m/s. How fast is the bag moving while the bullet exits.
A large circus ride has a centripetal acceleration at 6.0 m/s2. If the circular ride has a radius of 11.0 m, what is its velocity at the edge
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