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A 15 kg flywheel has all its mass around its outer rim. A string is wrapped around it and a m = 3.7 kg weight is hanging on the string. The flywheel has radius R = 0.25 m. When the 3.7 kg weight is
A rod is pulled along a rail by a constant external force. The length of the rod b/t the rails is 38cm. The magnetic field point upward b/t the rails has a constant value 0.885T. The circuit has res
If a negative was introduced and moved from a positive equipotential line toward a negative equipotential line, would the work be positive or negative? Explain please.
Question: A small sphere with a mass of 0.002g and carrying a charge of 5*10^-8C hangs froma thread near a very large, charged conducting sheet. The charge density on the sheet is 2.5*10^-9C/m^2. FI
One point-like charge of -20 nC is placed 3 cm away from a very large planar sheet of charge. The surface charge density is constant and has the value of +20 nC/cm^2 (a) Give the electric force exer
A 900-kg car is moving at 33.3 m/s. A braking force of -7548 N is applied for 2.70 s. What is the velocity of the car when the brakes are released?
A helicopter lifts a 70 kg astronaut 16 m vertically from the ocean by means of a cable. The acceleration of the astronaut is g/10. (a) How much work is done on the astronaut by the force from the h
A wire carries a current of 0.616 A. This wire makes an angle of 56.7° with respect to a magnetic field of magnitude 4.63E-5 T. The wire experiences a magnetic force of magnitude 7.17E-5 N. What
Explain the changes in acceleration, velocity, and net acceleration Of a man jumping off a plane in a parachute. Describe the changes with valid scientific principles.
A generator uses a coil that has 116 turns and a 0.455 T magnetic field. The frequency of this generator is 70.0 Hz, and its emf has an rms value of 115 V. Assuming that each turn of the coil is a s
The rectangular coils in a 315-turn generator are 15cm by 15cm. What is the maximum emf produced by this generator when it rotates with an angular speed of 515rpm in a magnetic field of 0.40T ?
A 0.43 T magnetic field is perpendicular to a circular loop of wire with 56 turns and a radius of 16cm .If the magnetic field is reduced to zero in 0.14s, what is the magnitude of the induced emf?
What additional capacitor do you need to produce a total capacitance of 55 mu F. Should you join the two capacitors in parallel or in series?
A system consists of three particles with these masses and velocities: mass 3.2 kg, moving north at 3.1 m/s; mass 3.9 kg, moving south at 4.8 m/s; and mass 7.2 kg, moving north at 1.8 m/s. What is t
A hot air balloonist rising vertically with a constant velocity of magnitude 5.0 m/s, releases a sandbag at an instant when the balloon is 40 m about the ground. After its released the sandbag is i
A supply plane flies at 55m/s and has a constant height of 250m towards a point directly above a victim, where a crate is to land. a) At what angle should the pilot aim when he releases the crate?
Two runners start simultaneously from the same point on a circular 200m track and run in opposite directions. one runs at a constant speed of 6.2m/s and the other runs at a constant speed of 5.5 m/s
An electron with a speed of 6.00*10^6 m/s collides with an atom The collision excites the atom from its ground state (0eV( to a state with an energy of 3.70 eV. What is the speed of the electron aft
Mayan kings and many school sports teams are named for the puma, cougar, or moutain lion felis concolor, the best jumpr among animals. It jumps to a height of 10.3ft when leaving the ground at an an
In a double-slit experiment with monochromatic light, a thin sheet of transparent material of thickness t and index of refraction n is placed over one of the slits. What now is the condition for the
Monochromatic light of wavelength 510 nm is incident on a diffraction grating with 5000 lines/cm. What is the highest-order spectrum that can be observed?
Given the capacitors, C1 = 2muF, C2 = 1.5 muF and C3 = 3muF, what arrangement of parallel and series connections with a 12-V battery will give the min voltage drop across the 2muF capacitor? What is
One mole of an ideal monatomic gas is expanded adiabatically and quasi-statically from a pressure of 1,172 kPa and a temperature of 273 K to a pressure of 279 kPa. What is the final volume of the ga
One mole of an ideal diatomic gas is heated from a temperature of 19 degrees C to a temperature of 149 degrees C. How much heat in joules must be supplied if the volume is kept constant during heati
A quantity of 1.3 mol of Argon gas is confined to a 2.1 L container at a pressure of 1,019 kPa. What is vrms for the argon atoms under these conditions? Give your answer in Standard SI units. (For a