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Your sister wants to participate in the yearly science fair at her high school and asks you to suggest some exciting project. You suggest that she experiment with your recently created electron extractor to suspend her cat in the air. You tell her to buy a copper plate and bolt it to the ceiling in her room and then use your electron extractor to transfer electrons from the plate to the cat. If the cat weighs 6.67 kg and is suspended 1.73 m below the ceiling, how many electrons have to be extracted from the cat? Assume that the cat and the metal plate are point charges.
A transverse sinusoidal wave on a string has a period T =28.0 ms and travels in the negativex direction with a speed of 25.0 m/s. What is the initial phase angle
A proton having an initial velocity of 17.2i hat bold Mm/s enters a uniform magnetic field of magnitude 0.360 T with a direction perpendicular to the proton's velocity. Determine the distance the proton traveled in the field
A ranger in a national park is driving at 32.0 mi/h when a deer jumps into the road 200 ft ahead of the vehicle. What is the maximum reaction time allowed
The image of a very distant car is located 17 cm behind a convex mirror. what is the radius of curvature of the mirror
a vessel at rest explodes breaking into three pieces. two pieceshaving equal mass fly off perpendicular to one another
A luggage handler pulls a suitcase of mass 16.7kgup a ramp inclined at an angle 29.0? above the horizontal by a force F? of magnitude 147N that acts parallel to the ramp. Calculate the work done on the suitcase by the normal force
When an AC generator is connected across a 12.0? resistor, the rms current in the resistor is 8.00A. calculate the average power delivered to the resistor
You have a compound microscope with a barrel of length 157 mm. Find the total angular magnification of the microscope for a person whose near point is 25.0 cm away
the objective lens of an astronomical telescope has a focal length of 60 cm and the eyepiece has a focal length of 2
What should be the length of an organ pipe, open at both ends, if the fundamental frequency is to be 264.5 Hz
An ice cube is floating at the top of a glass of water. After it melts completely, will the water level rise, fall, or stay the same? Explain your answer.
Two cylindrical glass beads each of mass m = 32 mg are set on their flat ends on a horizontal insulating surface separated by a distance d = 3 cm. The coefficient of static friction between the beads and the surface is μs = 0.3. The beads are then gi..
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