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A small plane pilot is buffeted by shifting winds. She flies 26 kilometer due northeast followed by 45 kilometer due north. Then the winds blow the plane in an unknown direction for an unknown distance. After the wind dies down the pilot finds herself at a landing strip 70 kilometer due north of her original location. Obtain the magnitude and direction of third leg of trip.
An astronaut weighs 275 lbs with equipment here on the surface of the earth. If he goes to a planet where the acceleration of gravity is 12.5 ft/s/s, What will be his mass be there
a 8.80 x 10-3 kg bullet is fired horizontally into a 2.37 kg wooden block attached to one end of a massless horizontal
(a) What is the x component of the net electrostatic force on particle 3. (b) What is the y component of the net electrostatic force on particle 3
Two long parallel wires are separated by 4.0mm. The current flowing in one of the wires is twice that in the other wire. If the magnitude of the force on a2.0-m length of one of the wires is7.2µN, what are the values of the two currents? (Enter your ..
A 100 W lightbulb is plugged into a standard 120 V outlet. How much does it cost per month (30 days) to leave the light turned on continuosly? Assume electrical energy costs 7.5/kWh. (Enter dollars with no unit) What is the resistance of the bulb? Wh..
In an experiment, a rectangular block with height h is allowed to float in two separate liquids. In the first liquid,which is water, it floats fully submerged. In the second liquid it floats with height h/5 above the liquid surface. What isthe relati..
The electric field midway between two equal but opposite point charges is 730 N/C, What is the magnitude of the charge on each
Consider a hollow circular cylinder. Use Gauss's law to show that the field inside the pipe is zero. Also show that the field outside is the same as if the charge were all on the axis.
0.25 kg coffee mug is made from a material that has a specific heat capacity of 990 J/(kg°C) and contains 0.31 kg of water. determine the minimum power rating of this heater
A popular earring design features a circular piece of gold of diameter D with a circular cut out of diameter d, as shown in the figure. If this earring is to balance at the point P, show that the diameters should satisfy the condition: D = fd, where ..
a student standing on a stationary skateboard tosses a textbook with a mass of mb 1.55 kg to a friend standing in
The walls of a blackbody cavity are at a temperature of 27 degrees C. find the frequency of the radiation of maximum intensity
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