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Two tiny spheres have the same mass and carry charges of the same magnitude. The mass of each sphere is 3.03 × 10-6 kg. The gravitational force that each sphere exerts on the other is balanced by the electric force. Determine the charge magnitude.
An industrial laser is used to burn a hole through a piece of metal. The average intensity of the light is = 1.72 × 109 W/m2. What is the rms value of (a) the electric field and (b) the magnetic field in the electromagnetic wave emitted by the laser.
An automobile has a vertical antenna 1.30 m long. The automobile travels eastward at 65 km/h on a horizontal road, Calculate the maximum magnitude of the induced emf in the antenna
A transistor to be used in a circuit is rated for a maximum current of 30 mA if operated at 9.0 V.c What is the maximum acceptable power to the transistor
You hit a 142 g baseball by swinging a bat with a force of 500 N. The collision lasts for 25.0 ms. If the ball was initially thrown at 19 m/s, What is the final speed of the ball
Two wires are parallel (heading north-south). The current in each wire is northward. What is the direction of the magnetic field at the location of the right-hand wire due to the current in the left-hand wire? What is the direction of the magnetic fo..
Glider A with mass 0.400 kg, gliding with a velocity of magnitude 0.50 m/s on a frictionless, horizontal air track, makes a perfectly elastic head-on collision with a glider B with mass, Find the mass of the glider B
A solid uniform 38.9kg ball of diameter 36.2cm is supported against a vertical frictionless wall using a thin 30.0cm wire of negligible mass. how hard does the ball push against the wall
a dockworker loading crates on a ship finds that a 22 kg crate initially at rest on a horizontal surface requires a
Two large equipotent surfaces are flat and parallel and separated by a relatively small distance compared to their size. One surface is at 25 V and the other is at 33 V. The surfaces are 1.25 cm apart. What is the direction of the electric field m..
High-speed stroboscopic photographs show that the head of a200-g golf club is traveling at 55m/s just before it strikes a 46-ggolf ball at rest on a tree. What is the speed of the golf ball just after impact
The total volume of water in the oceans is approximately 1.40 multiplied by 109 km3. Find the increase in mass of the oceans produced by an increase in temperature of 4.8°C
An LC circuit has zero resistance, no battery, a capacitor C=70microFarads, and an inductor L=0.6H connected in a simple loop. What is the maximum magnetic field inside the inductor
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