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A man moves his head back and forth between the poles of a powerful magnet. He moves perpendicular to the field at a maximum speed of 150m/s. If he can taste on his tongue, an electric field of 10V/m, how powerful must the magnetic field be so that he may taste it?
A diver in Mexico dives off the top edge of a cliff 200 meter above the ocean at speed of 3m/s in the horizontal direction. Find how long will it be before he hits the water below
Suppose Fuzzy, a quantum-mechanical duck, lives in a world in which h = 2?J · s. Fuzzy has a mass of 2.05 kg and is initially known to be within a pond 1.00 m wide. What is the minimum uncertainty in the duck's speed
662 kev photons are emitted as a result of the deay of 137cs the photon undergo compton scattering. what is the minimum energy of compton scattered photon? what is the max compton electron energy?
A molecule of DNA (deoxyribonucleic acid) is 2.28 µm long, Determine the effective spring constant of the molecule
A recent discovery of human bones revealed only 26.5 % radiocarbon activity compared to live human bones. Estimate the age of the bones
A parallel plate compactor has two circular plates separated by 0.3mm. If the capacitance of this arrangement is 4 x 10^-10 Farads, what is the radius of all plate of the capacitor?
a coil of wire is connected to an ideal 6.0-v battery at t 0. at t 10.3 ms the current in the coil is 200 ma. one
A 4.0kg mess kit sliding on a frictionless surfaceexplodes into two 2.0gk parts, one moving at 3.0m/s, What is the orginal speed of the mess kit
a 1200 kg car going 25m/s is brought to stop using its brakes. what is the change in temperature of the brakes and wheels
A block of aluminum is 7cm x 5cm x 5cm. The initial temperature of the aluminum is -30oC. How much heat must you add to bring the block temperature up to 30oC?
A shaving mirror is a concave mirror used to give someone a close up view of their face. how far is the man's face from the mirror
On planet Tehar, the acceleration of gravity is the same as that onEarth but there is also a strong downward electric field with thefield being uniform close to the planet's surface.
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