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A pilot having mass M(kg) flies a plane in a vertical loop with a radius of 800m at a constant speed of 500 km/h. Determine the force exerted on the pilot by the seat at both the top and bottom of t
A firefighter with a weight of 702 N slides down a vertical pole with an acceleration of 2.90 m/s2, directed downward. What are the magnitudes and directions (choose the positive direction up) of th
A long vertical wire carries an unknown current. Coaxial with the wire is a long, thin, cylindrical conducting surface that carries a current of 31.7 mA upward, what is the current (in A) in the wir
An electron moves in a circular path perpendicular to a magnetic field of magnitude 0.230 T, find the speed of the electron and the radius of the circular path
Two loudspeakers emit 500Hz notes. One speaker sits on the ground. The other speaker is in the back of a pickup truck, What is the truck's speed
Light of a wavelength 450 nm is incident on a sodium emitter in a photoelectric effect apparatus. What is the cutoff frequency for the emitter
To monitor the breathing of a hospital patient, a thin belt is girded around the patient's chest, Find the average induced emf in the coil during this time. Assume the magnitude of the Earth's magneti
A steel cable with total length 59 m and mass 110 kg is connected to two poles. The tension in the cable is 1,260 N, and the wind makes the cable vibrate with a frequency of 2 Hz. Calculate the wave
What is the electric potential energy of a system that consists of two protons 2.1×10?15 m apart-as might occur inside a typical nucleus
A wire carries a current of 9.0 A in a direction that makes an angle of 35.0° with the direction of a magnetic field, Find the magnetic force on a 6.00 m length of the wire
A mass of 50 kg hangs from a cable that, in turn, is tied to two other cables, What are the tensions in the two upper cables, TL and TR
The rotor in a certain electric motor is a flat, rectangular coil with 88 turns of wire and dimensions 2.33 cm by 4.20 cm, What is the average power of the motor
You are given three capacitors, with capacitances 0.0075 µF, 12000 pF, and 0.029 µF, what is the maximum and the minimum voltage difference would they make when charged to 130 µC
Two tugs A and B pull a ship along a direction XO. Tug A exerts a force of 30kN at an angle of 15 degrees to XO, Find the angle X for the resultant force on the boat to be along XO
If the free ends of the two cylinders are maintained at constant temperatures of 93?C (steel) and 28?C(copper), how much heat will flow through the cylinders in 25 min
Multiple-Concept Example 7 deals with the concepts that are important in this problem. Find the minimum coefficient of friction necessary to allow the penny to rotate along with the disk
A magnetic field is perpendicular to a 0.0417 m x 0.0636 m rectangular coil of wire that has 108 turns, What is the magnitude of the change in the magnetic field
A railroad car of mass 3.3 104 kg moving at 3.50 m/s collides and couples with two coupled railroad cars, How much kinetic energy is lost in the collision
One generator uses a magnetic field of 0.185 T and has a coil area per turn of 0.0405 m2, What magnetic field should be used in the second generator
A house has a floor area of 162.0 m2 and an outside wall that has an area of 40.50 m2. The earth's magnetic field here has a horizontal component of 2.550E-5 T, Determine the magnetic flux through t
A 2,200-kg car moving east at 10.0 m/s collides with a 3,000-kg car moving north. The cars stick together and move as a unit after the collision, Find the speed of the 3,000-kg car before the collis
A rifle with a weight of 35 N fires a 5.0-g bullet with a speed of 250 m/s, If a 675-N man holds the rifle firmly against his shoulder, find the recoil speed of the man and rifle
High-speed stroboscopic photographs show that the head of a 190-g golf club is traveling at 58 m/s just before it strikes a 46-g golf ball at rest on a tee, Find the speed of the golf ball just afte
Two coils have the same number of circular turns and carry the same current. Each rotates in a magnetic field acting perpendicularly to its axis of rotation, What is the radius (in cm) of coil 2
A 0.200 T magnetic field is directed along the positive x axis. A magnetic field of unknown magnitude acts along the positive y axis, Find the magnitude of the unknown magnetic field