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Question: Determine the current through a 2.9-ohms flashlight filament when connected across two 1.5-V batteries in series (a potential difference of 3.0 V).
Can someone please explain what the heck is going on?
A rectangular block of copper has sides of length 5 cm, 21 cm, and 38 cm. what are the currents that the block can carry
A quarterback claims that he can throw the football a horizontal distance of 183 m (200 yd). Furthermore, he claims he can do this by launching the ball at the relatively low angle of 30.0 degrees above the horizontal.
A 650 kg elevator starts from rest. It moves upward for 3.50 s with stable acceleration until it reaches its cruising speed 1.75 m/s. Calculate average power of elevator motor during this period
a san francisco cable car loses its brakes and runs down a hill 45 m high. the mass of the train and its passengers is
Consider a piece of nichrome wire which is attached to a 1.2-mm-diameter aluminum wire, as diagrammed in the figure below. What diameter should the nichrome wire in the figure below be in order for the electric field strength to be the same in..
A 3.00-m long rod is hinged at one end. The rod is initially held in the horizon position, and then released as the free end is allowed to fall. What is the angular acceleration as it is released
A 72.4-kg skier coasts up a snow-covered hill that makes an angle of 23.2 ° with the horizontal. The initial speed of the skier is 8.14 m/s. What is the magnitude of the kinetic frictional force
Elements that appear in the same column of the periodic table often share similar chemical properties. In the case of the alkaline earth metals, this is troublesome since the body treats calcium, calculate the path radius of the Ca ion
The eyepiece of a compound microscope has a focal length of 2.70 centimeter, and the objective lens has f = 0.740 centimeter. Find the distance between the lenses when the microscope is adjusted for a relaxed eye
An observer moving toward Earth with a speed of 0.95c notices that it takes 6.0 min for a person to fill her car with gas. How much time would the observer have measured for the car to be filled in this case
A water gun is filled and pumped up. It is held horizontal and fired at a height of .95 m above the ground. Determine the gauge pressure of the water in the gun's reservoir
The laws of reflection and refraction are the same for sound and for light. The speed of sound is 340 m/s in air and 1510 m/s in water. If a sound wave that is traveling in air approaches a flat water surface by an angle of incidence of 10.3°, what i..
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