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An explorer is caught in a whiteout (in which the snowfall is so thick that the ground cannot be distinguished from the sky) while returning to base camp. He was supposed to travel due north for 4.8 km, but when the snow clears, he discovers that he actually traveled 7.8 km at 48° north of due east.
(a) How far must he now travel to reach base camp?
(b) In what direction must he travel?
Two identical coils are parallel to each other on the same axis. Find an expression for the magnetic field strength at the mid-point between the loops
Two charged dust particles exert a force of 4.20 x 10^-2 N on each other. What would be the force if they are moved so they are only one-eight as far apart.
A 120-V motor has mechanical power output of 3.00 hp. It is 88.0% efficient in converting power that it takes in by electrical transmission into mechanical power. Find the current in the motor
a 1100kg auto is at rest at a traffic signal. At theinstant the light turns green, how far is the com of the auto-truck system from the traffic light at t=1.6s
A 90 capacitor that had been charged to 30 is discharged through a resistor. The figure (Figure 1) shows the capacitor voltage as a function of time. What is the value of the resistance
A 50-gram mass connected to a spring of force constant 35 N/moscillates on a horizontal, frictionless surface with an amplitudeof 4.0 cm. What is the total energy of the system?
q1. for a cylindrical resistor made of ohmic material the resistance does not depend on? then brief explanationa. the
A 65-g ice cube at 0°C is placed in 665 g of water at 30°C. What is the final temperature of the mixture
A motor may be modeled as a series RL circuit. A particular motor operates from an ordinary 60-Hz wall outlet with Erms= 115 V. what is the inductive reactance of the circuit
A certain metal with atomic mass 2.6 × 10?25 kg has an interatomic bond with length 2.5 × 10?10 m and stiffness 45 N/m. What is the speed of sound in a rod made of this metal
Find the drift velocity of conduction electrons in a gold wire of diameter 2.88 mm when a current of 0.123 A flows in it
A coil with 150 turns, a radius of 5.0cm , and a resistance of 12 Ohms surrounds a solenoid with 200 turns/cm and a radius of 4.3cm, Calculate the magnitude and direction of the induced current in the 150-turn coil
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