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Through nuclear magnetic resonance scanning in a hospital the protons(q=1.60*10^19 c) in the atoms of a patient’s body are subjected to a magnetic field of 75 T. Compute the magnitude of the magnetic force acting on the protons if we assume that they vibrate with a speed of 10^4 ms-1
Two small identical conducting spheres are placed with their centers 0.74 m apart. One is given a charge of 1.2 10-8 C, the other a charge of ?2.2 10-8 C. Find the electrostatic force exerted on one sphere by the other
If the column is 2.30m in length before being stressed, what is the decrease in length
In the Bohr model of the hydrogen atom, the electron revolves in acircular orbit around the nucleus. obtain the centripetal acceleration of the electron
a. what are the three longest wavelengths for standing waves on a 300-cm-long string that is fixed at both ends?b. if
an ideal gas of molar mass m is located in a uniform gravitational field whose free fall acceleration is g. a find the
An archer shoots a 2.0x10^-2 kg arrow at a target with a speed of 50 m/s. When it hits a target, it penetrates to a depth of 8.6x10^-2 m. What was the magnitude of the average force exerted by the target on the arrow?
A signal starts at x point. As it travels to y point it loses eight db. At point y the signal is boosted by ten db. As the signal travels to point z it loses 7 db.
An insulated Thermos contains 123 cm3 of hot coffee at 73 °C. You put a 12.0 g ice cube at its melting point to cool coffee. By how various degrees has your coffee cooled one time the ice has melted and equilibrium is reached? Treat the coffee as tho..
in research in cardiology and exercise physiology it is often important to know the mass of blood pumped by a persons
A satellite is orbiting the Earth at a distance of 2.67RE and with a speed of 4.29 km/s. With what speed would the satellite hit the Earth's surface
A 210, 50-cm-diameter turntable rotates on frictionless bearings at 67. A 25 block sits at the center of the turntable. A compressed spring shoots the block thoroughly outward next to a frictionless groove in the surface of turntable.
in an ionic solution 5.8 x 1015 positive ions with charge 2e pass to the right each second while 6.3 x 1015 negative
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