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the uncertainty in the position of an electron along an x axis is given as 56 pm which is about equal to the radius of
an astronomical telescope has its two lenses spaced 752 cm apart if the objective lens has a focal length of 745 cm
movers are pushing a 780 kg trunk at 710 ms when they encounter a 225 m long stretch of floor where the coefficient of
a 700 g block is released from rest at heighth0 above a vertical spring by spring constant k 365 nm and negligible
during an adiabatic process the temperature of 372 rm mol of a monatomic ideal gas drops from 460rm circ c to 210rm
a vacuum cleaner is plugged into a 1200-v socket and uses 31 a of current in normal operation when the back emf
a 263 g block is dropped onto a vertical spring with force constant k 252 ncm the block sticks to the spring and the
a 200 g block is pressed against a spring of force constant 14 k nm until the block compresses the spring 10 cm the
a bicycle tire with a fixed volume of 025 liters and at constant temperature of 296k is pumped up so that its pressure
microwaves of wavelength 540 cm enter a long narrow window in a building that is otherwise essentially opaque to the
the neutrons in a neutron star chapter 44 in the textbook can be treated as a fermi gas by neutrons in place of the
a pot containing a plant weighing 10 n is hung from ceiling with a group of bungee cords if pulled down and released
the distant moon imaginarius has half the diameter of the earth the free-fall acceleration on the imaginarius is a 4
a possible means for making an airplane invisible to radar is to coat the plane by an antireflective polymer if radar
a spacecraft flies away from the earth with a speed of 490times106 rm ms relative to the earth and then returns at the
a car and its suspension system act like a mass-spring system with m 1200kg and k 58 knm its worn-out shock absorbers
curious about the resistance of an audio speaker luke klaus lee measures the resistance of a speaker which is labeled
the hour hand on a certain clock is 90 centimeter long determine the tangential speed of the tip of this
an automobile has 53 of its weight on the front wheel the front and back wheels are separated by 3 meter determine
energy-efficient appliances are important in todays economy assume that a light bulb gives as much light as a 100 watt
a 202 kilogram boy descends a slide 31 meter high and reaches the bottom with a speed of 21 ms find how much thermal
a spring with 58 nm hangs vertically next to a ruler the end of the spring is next to the 18 centimeter mark on the
a circuit draws 330 watt from a 110 volt rms 60 hertz line the power factor is 06 and the current lags the voltage1
a 500 gram object moving to the right at 200 cms makes an elastic head-on collision with a 100 gram object that is
a 450 kilogram girl is standing on a 159 kilogram plank the plank originally at rest is free to slide on a frozen lake