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A rod 42 cm long moves in a plane perpendicular to a magnetic field of 500 G. The velocity of the rod is perpendicular to its length. Find the speed of the rod if the potential difference between the ends is 8 V.
Transmission electron microscopes that use high-energy electrons are employed in many areas including the study of biology samples (like a virus) and nanoscience research and development (allow particles and carbon nanotubes, for example).
A 970- kg car starts from rest on a horizontal roadway and accelerates eastward for 5.00s when it reaches a speed of 25.0m/s. What is the average force exerted on the car during this time
A 3.2-kg block of iron (c=0.11 kcal/kgoC) that has been brought to a temperature of 1,045oC is placed on top of a 2.4-kg block of ice (c=0.5 kcal/kgoC) that has been cooled to -50oC
A basketball player is standing on the floor 10.0 m from the basket, What is the acceleration of the basketball at the highest point in its trajectory
a 10-cm-diameter parallel-plate capacitor has a 1.0 mm spacing. the electric field between the plates is increasing at
a pair of oppositely charged parallel plates are separated by 5.25 mm. a potential difference of 600 v exists between
Assume that at sea-level the air pressure is 1.0 atm and the air density is 1.3 kg/m3. What would be the height of the atmosphere if the air density were constant
Ultraviolet light with a wavelength of 10.0 nm shines on a gas of hydrogen atoms in their ground states. Some of the atoms are ionized by the light. What is the kinetic energy of the electrons that are freed in this process?
A 64.0-kg person holding two 0.750-kg bricks stands on a 2.20-kg skateboard. Initially, the skateboard and the person are at rest. What is the recoil speed of the person
A scientist performing UN inspections finds evidence of an abandoned nuclear laboratory. A sample box in the lab reads "pure sample Strontium-90." How long ago was the sample created
A wire of length L carries a current i in the positive direction of an x axis through a magnetic field = By(j hat) + Bz (k hat). In unit-vector notation, what is the magnetic force on the wire? (Use any variable or symbol stated above as necessary.)
Three springs each hang from a ceiling with a stationary block attached to the lower end. The blocks (with m1> m2 > m3) stretch the springs by equal distances. Each block-spring system is then set into vertical SHM. Rank the masses according to the p..
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