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A 1945-W electric hair dryer is designed to work in the United States, where the ac voltage is 120 V rms. What power is dissipated in the hair dryer when it is plugged into a 240-V rms socket in Europe?
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A stone is dropped at t = 0. A second stone, with 6 times the mass of the first, is dropped from the same point at t = 56 ms. How fast is the center of mass of the two-stone system
A bale of hay sits on the bed of a trailer. The trailer is starting to accelerate forward, and the bale is slipping toward the back of trailer. What would a force diagram and a free-body diagram look like for the above situation.
A cannon, placed in the valley, fires a shell at 52 degrees with respect to the horizontal line. The initial speed of the shell is 516 m/s, Calculate the range of the shell
A 8.7 V battery is connected to a 6.4 pF parallel-plate capacitor. What is the magnitude of the charge on each plate
An Australian emu is running due east in a straight line at a speed of 12.5 m/s and slows down to a speed of 11.4 m/s in 7.3 s. (a) What is the direction of the bird's acceleration? north south east west.
A parallel-plate capacitor is made from two plates 12.5 cm on each side and 4.20 mm apart. obtain how much energy will be stored in the capacitor
A car takes 11 s to go from v = 0 to v = 80 m/s at about constant acceleration. If you wish to find the distance travelled using the equation d = 1/2 at2, what value must you use for a.
A solid lead sphere of volume 0.40m^3, dropped in the ocean, sinks to a depth of2.0*10^3 (about 1 mile), What is the change in volume of the sphere
If the balls are released from a height where the bottom of the basketball is at 0.781m above the ground, what is the absolute value of basketball's momentum just before it hits the ground.
The moon's diameter is 3.48 × 106 m, and its mean distance from the earth is 3.85 × 108 m. Find the diameter of the moon's image on the slide film
A basketball can be modeled as a thin walled spherical shell with a mass of 0.600 kg and a radius of 12.0 cm. What is the rotational kinetic energy of the ball
Two small plastic spheres are given positive electrical charges. When they are 18.0cm apart, the repulsive force between them has magnitude 0.300 N. find the charge on each sphere if the two charges are equal
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