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A zero-resistance rod sliding to the right on two zero-resistancerails separated by the distance L = 0.75 m. The rails are connected by a 15.1-Ω resistor, and the entire system is in auniform magnetic field with a magnitude of 0.750 T.(a) Find the force that must be exerted on the rod to maintain aconstant current of 0.125 A in the resistor.(b) What is the rate of energy dissipation in the resistor? inmW(c) What is the mechanical power delivered to the rod? in mW
A 23 gram bullet traveling 230m/s penetrates a 2kg block of wood and emerge clearly at 170m/s. If the block is stationary on a frictionless surface when hit, how fast does it move after bullet emerges.
A surface whose work function is 2.5 eV is illuminated by alight whose wavelength is 152 nm. What is the maximum velocity of a photo-electron emitted from the surface
question11 give an everyday instance that illustrates the difference between acceleration and velocity. give a case of
Find an action to decrease the rise time of pulses passing through an amplifier.
A space vehicle is coasting at a constant velocity of 15.1 m/s in the +y direction relative to a space station. find the direction of the vehicle's velocity relative to the space station
The average depth of Earth's oceans is 2.236 mi. Suppose 68% of the earth is covered in water and that the population of the earth is 6.33 billion. (a) How much water mass on the surface of earth is there per person and (b) to help visualize it, w..
A single electron orbits a lithium nucleus that contains three protons (+3e). The radius of the orbit is 1.76 10-11 m. Determine the kinetic energy of the electron.
You tie a cord to a pail of water, What minimum speed must you give the pail at the highest point of the circle if no water is to spill from it
A typical car battery is composed of six, 2.1 V cells arranged in series to have an Emf of 12.6 V. How many electrons pass through the starter motor
A skydiver jumps out of a plane and reaches her terminal speed of120 mph after falling for 15 s. How fast will the skydiver be going28.4 s later at the moment she pullsthe ripcord? (The parachute hasn't deployed yet)
A parallel plate capacitor has square plates with sides of length 10 cm. The distance between the plates is 4 mm. What is the amount of charge on each plate
A carpenter tosses a shingle horizontally off an 8.8m--high roof at 8.0m/s , How far does it move horizontally
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