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A potential difference of 4.80 V will be applied to a 43.00 m length of 18-gauge copper wire (diameter = 0.0400inches). Calculate the current. Calculate the current density. Calculate the electric field. Calculate the rate at which thermal energy will appear in the wire.
The sound produced by the loudspeaker has a frequency of 12002 Hz and arrives at the microphone via two different paths. The sound travels through the left tube LXM that has a fixed length.
A ball of weight 1.5 N is thrown at an angle of 30° above the horizontal with an initial speed of 12 m/s. the net force (ignoring air resistance) on the ball is:
An object with mass m1 = 3.20 kg, rests on a frictionless horizontal table and is connected to a cable that passes over a pulley, Find the magnitude of the acceleration of each object
A woman rides on a Ferris wheel of radius 16 \rm m that maintains the same speed throughout its motion. What is her mass in kilograms
If a pitcher throws a 3 kg ball at 30 m/s to a batter who hits it straight back at him using 58500 N for 0.003 seconds, what is the velocity of the ball coming back to the pitcher
To fit a contact lens to a patient's eye, a keratometer can be used to measure the curvature of the cornea-the front surface of the eye. Determine the radius of curvature of the cornea
A 5.2 x10^2-newton girl takes 10. Seconds to run up two flights of stairs to a landing, a total of 5.0 meters vertically above her starting point. What power does the girl develop during her run.
At some instant the velocity components of an electron moving between two charged parallel plates are Vx=1.5*10^5 m/s. What is the acceleration of the electron
Suppose you carry a bag of groceries weighing 124 N from your car to your kitchen, a distance of 61 m, find the work done by the force you exert on the bag
Parallel-Plate capacitor has plate area 0.4m^2 and a separation of 0.1mm. How much energy is stored in its field
A space probe is traveling in outer space with a momentum that has a magnitude of 4.29 x 107 kg·m/s. A retrorocket is fired to slow down the probe. Determine the momentum of the probe
A turn on a racetrack has a radius of curvature of 2000 ft and a bank angle theta. If cars travel at 140 mph through the turn find a) the minimum bank angle so the cars won't slip sideways during the turn.
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