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Two 10-cm-diameter charged rings face each other, 22 cm apart. The left ring is charged to -24 nC and the right ring is charged to +24 nC .
A) What is the magnitude of the electric field E? at the midpoint between the two rings?
B) What is the magnitude of the force F? on a -1.0 nC charge placed at the midpoint?
A middle-aged man typically has poorer hearing than a middle-aged woman. In one case a woman can now begin to hear a musical tone, while a man can now begin to hear the tone only when its intensity level is increased by 6.2 dB relative to the just-au..
A pendulum is modeled by a mass m, attached to one end of a light rod of lenght l, whose other end is attached to an axis. Write down the equation of motion (Newton's Law) modeling the pendulum. Rewrite the model as a system of two first order equ..
when a laser beam reflects from a rotating mirror it produces pulses of light with a band of frequencies centred on
The energy flow per unit time per unit area (S) of an electromagnetic wave has an average value of 598 mW/m2. Determine the total energy that traverses the area in a time interval of one minute
Two ice skaters stand at rest in the center of an ice rink. When they push off against one another the 68-kg skater acquires a speed of 0.60m/s. what is this skater's mass
Tungsten has a work function of 4.6 eV . What is the longest wavelength of light that will release an electron from a tungsten surface? Express your answer with the appropriate units.
A 1 000-V battery, a 3 000-W resistor, and a 0.50-µ Fcapacitor are connected in series with a switch. The capacitor isinitially uncharged. What is the value of the current the moment after the switch is closed?
On a single, light, vertical cable that does not stretch, a crane is lifting a 1,207-kg Ferrari and, below it, a 1,461-kg BMW Z8. Find the tension in the cable above the Ferrari
An artificial satellite is placed into a natural synchronousorbit above the equator and is attached to the earth below awire. A second satellite is attached to the first by a wireof the same length and is placed in orbit directly above the firstat..
A racquetball strikes a wall with a speed of 30 \rm m/s and rebounds with a speed of 26 \rm m/s. What is the average acceleration of the ball
The cable at the end of the crane boom exerts a force of 250 lb on the boom as shown. Express F as a Cartesianvector.
A 65kg man is riding on a 22kg cart traveling at a speed of3.6 m/s. What is the resulting change in the cart's speed
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