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A current of 13.2 A is carried by a copper wire of diameter 1.29 mm. If the density of the conduction electrons is 8.47 1028 m?3, how long does it take for a conduction electron to move 0.55 m along the wire?
A husband and wife take turns pulling their child in a wagon along a horizontal sidewalk. find the magnitude of the pulling force exerted by his wife
A heavy sled is being pulled by two people as shown in the figure. The coefficient of static friction between the sled and the ground is ?s = 0.595, what is the sled\'s acceleration
question1alan leaves university of lethbridge at 800am to drive to au 650 km away. he leaves at an average speed of
A glass windowpane in a home is 0.62 cm thick and has dimensions of 1.0m x 2.0m. On a certain day, How much energy is 'lost' through the window in one day
Styrofoam has a density of 300 kg/m^3. What is the maximum mass that can hang without sinking from a 40cm diameter Styrofoam sphere in water? Assume the volume of the mass is negligible compared to that of the sphere.
a stone is projected at a cliff of height h with an initial speed of 49.0 m/s directed at an angle ?0 = 63.0° above the horizontal. The stone strikes at A, calculate the speed of the stone just before impact
Chicago is located at 37.5 degrees north of the equator. What is chicagos linear velocity due to the Earth spinning on its axis
A child is twirling a 0.0224-kg ball on a string in a horizontal circle whose radius is 0.104 m. The ball travels once around the circle in 0.350 s. Determine the centripetal force acting on the ball
A screen is placed 50cm from a single slit. A laser of wavelength 635nm is shown on the slit resulting in a single slit diffraction pattern, What is the width of the central maximum
An 8-g bullet is fired into a 170 g block that is initially at rest at the edge of a table of 1m height. The bullet remains in the block, and after the impact the block lands d = 2.10 m from the bottom of the table. Determine out the initial speed..
In a CRT tube, electrons are accelerated by a 20,000 V potential difference between the electron gun (the cathode) and the positive metal mesh 5.00 cm away. How much time does it take the electron to reach the wire mesh
You place a long straight wire on top of your compass, and the wire is a height of 3 millimeters above the compass needle. calculate the approximate angle the needle deflects
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