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An electron traveling due North with speed 4.0 x 10 m/s enters a region where the earth?s magnetic field has the magnitude 5.0 x 10^-5 T and is directed to the north and upward at 30 degree above horizontal. What magnitude force acts on the electron?
At six flags over Georgia near Atlanta, the weellie cariespassengers in a circular path with a radius of 7.7m. the ride makesa complete rotation every 4.0s (a ) what is a passengers angularvelocity due to the circular motion? (b) what acceleration..
a friend asks you how much pressure is in your car tires. you know that the tire manufacturer recommends 30 psi but its
In this problem, use 343 m/s for the speed of sound in air. what is the wavelength of the waves on the string
An electric power station is producing 1.60 × 103 W of power that is to be sent to a small town located 13 km away, Find the power lost in heating the wires
An astronaut on Jupiter drops a rockstraight downward from a height of 1.20 m.If the acceleration of gravity on Jupiteris 24.8 m/s2, what is the speed of the rock when it lands
A block of mass m lies on a horizontal table. The coefficient of static friction between the block and the table is mu_s. If the block is at rest, what is the magnitude of the force due to friction
What is the acceleration of the baseball and what is the acceleration in g's - what was the rocks velocity when it hit the water?
One gallon of gasoline releases approximately 1.0 108 J when it is "burned" (i.e., undergoes combustion) in a car engine. what is the mechanical work done by the engine
An aluminum tray used for making ice cubes is filled with water and placed in a freezer at 20.0 C. The emissivity of the aluminum is close to zero, but the emissivity of water or ice is 0.950. The exposed top surface area of each ice cube is 20.0..
Assume that the mud ends up uniformly distributed over a surface area of the valley measuring 0.3 km x 0.3 km, What is the mass of the mud sitting above a 4 m2 area of the valley floor
If the backpack begins to slide when the spring ( = 150 ) stretches by 2.40 , what is the coefficient of static friction between backpack and table.
You have a wire with a current that points upwards. If you put a compass east of that wire, how would the magnitude and direction of the total magnetic field change
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