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Joe and Jake are in Joe's apartment and they decide to go to restaurant for dinner. Joe drives (alone) to the restaurant by going east for 2.6 miles and then north for 6.8 miles. Jake has to first go to his apartment to finish some chores. Jake's apartment is 1.1 miles from Joe's along the direction 30 degree north of east. The roads from Jake's apartment to the restaurant go either north-south or east-west. If Jake is always driving either north or east, obtain how many miles does Jake drive from his apartment to reach the restaurant?
miles
Two point charges are separated by 6 cm. THe attractive force between them is 20N. What is force between them when they are separated by 9 cm? What is the equation used to arrive at this reply?
During a drive by golfer, the angular velocity of his club is zero at the top of the backswing and 34 rad/s at the bottom of the downswing just before impact with the ball, what is the average angular acceleration of the club
A string vibrates in five segments to a frequency of 460Hz. (a) what is its fundamental frequency? (b) What frequency will cause it to vibrate in three segments.
A right triangle has sides of 30, 40 and 50 cm. A charge of -10 x 10-6 C is placed at the right angle; a charge of + 10 x 10-6C at the smaller acute angle and a charge of + 5.0x10-6 C at the larger acute angle
Take element Z = 21 from the periodic table. Ionize it 20 times so that there is only one electron left orbiting around the nucleus. What is the ground state energy of the electron
After a tornado, a 0.50-g drinking straw was found embedded 4.5 cm in a tree. What was the straw's speed
The diameter of the He atom is approximately 0.10nm. Compute the density of the He atom in (assuming that it is a sphere).
an object initially at rest moves a distance x when a force f is applied for time t. how far will the object move of a
An air conditioner connected to a 120 V rms ac line is equivalent to a 11.0 resistance and a 1.50 inductive reactance in series. Compute the impedance of the air conditioner. Compute the average rate at which power is supplied to the appliance.
A 100 g granite cube slides down a 40* frictionless ramp. At the bottom, just as it exits onto a horizontal table, it collides with a 200g steel cube at rest. How high above the table must the granite cube be released to give the steel cube a spee..
A thick, vertical iron pipe has an inner diameter of 0.065 meter. A thin aluminum disk, heated to a temperature of 85oC, has a diameter that is 3.9 x 10-5 meter greater than the pipe inner diameter. Evaluate the temperature of the aluminum disk
An electron and a proton are each placed at rest in an electric ?eld of 334 N/C. What is the velocity of the electron 46.2 ns after being released
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