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A laptop communicates with a router wirelessly, by means of radio signals. The router is connected by cable directly to the Internet. The laptop is 8.2 meter from the router, and is downloading images and text from the Internet at an average rate of 242 Mbps, or 242 megabits per second. (A bit, or binary digit, is the smallest unit of digital information.) On average, obtain how many bits are downloaded to the laptop in the time it takes the wireless signal to travel from the router to the laptop?
bits
Two people begin at the same place and walk around a circular lake in opposite directions. One walks with an angular speed of1.50 10-3 rad/s, while the other has an angular speed of 3.20 10-3 rad/s. How long will it be before they meet?
The team monitoring a space probe exploring the outer solar system finds that radio trasmissions from the probe take 1.71 hours toreach earth. How distant (in meters) is the probe?
A step-down transformer has 16,000 turns on the primary and 95 turns on the secondary. If the rms emf across the secondary coil is 120 V, Elucidate the maximum emf across the primary coil?
a rod (length 3 meters, mass 1 kg) is pinned at its end so the stick can rotate freely in a plane parallel to a tabletop. Where along the rod is the force applied
Four identical metallic objects carry the following charges: +1.18, +6.89, -4.92, and -9.56C. The objects are brought simultaneously into contact, What is the final charge on each object
Two ice skaters, with masses of 40.0 kilogram and 65.0 kilogram, are at the center of a 60.0 meter diameter circular rink. If the heavier skater reaches the edge in 10.0 second, find how long does the lighter skater take to reach the edge
A car is designed to get its energy from a rotating flywheel (solid disk) with a radius of 1.00 m and a mass of 475 kg. find the length of time the car could run before the flywheel would have to be brought back up to speed
A sled of mass m is given a kick on a frozen pond. The kick imparts to it an initial speed of 3.30 m/s. find the distance the sled moves before it stops
Auto companies frequently test the safety of automobiles byputting them through crash tests to observe rge integrity of thepassenger compartment. with what average force is it brought to rest
A spaceship ferrying workers to Moon Base I takes a straight-linepath from the earth to the moon, a distance of384000 {\rm km}. what total time is required for the trip
Neurons in our bodies carry weak currents that produce detectable magnetic fields. A technique called magnetoencephalography, or MEG, is used to study electrical activity in the brain using this concept.
A bird sits on a telephone wire midway between two poles 20 meters apart. The wire, assumed weightless, sags by 50 cm. If the tension in the wire is 90 Newtons, what is the mass of the bird?
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