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Four resistors are connected to a battery with a terminal voltage of 15 V, as shown in figure. Determine the power delivered to R2. (R1 = 20 ohm;, R2 = 45 ohm)
an air mattress is 2.3 m long 0.66 m wide and .14 m deep. if the air mattress isteslf has a mass of 0.22 kg what is
A cylindrical fishing reel has a moment of inertia of I = 6.0 10-4 kg·m2 and a radius of 4.0 cm. What is the force of the fish on the line
A plastic ball has a charge of 2.65 µC and is attached to a string. What is the mass of the small plastic ball
A cannon of mass 6.14 x 103 kg is rigidly bolted to theearth so it can recoil only by a negligible amount. What would be the velocity of a shell fired from this loose cannon
An engine absorbs 1.69 kJ from a hot reservoir at 277 °C and expels 1.24 kJ to a cold reservoir at 27 °C in each cycle. What is the power output of the engine if each cycle lasts 0.298 s
A 2.2 kilogram steel block is at rest on a steel table. A horizontal string pulls on the block. Find the minimum string tension needed to move the block
A mass (M=2kg) is placed in front of a spring with k=900N/m, compressed d=50cm. The spring is released, shooting the mass forward from A to the spring's equilibrium position at B, What is the velocity of the mass at point C
One solenoid is centered inside another. The outer one has a length of 47 centimeter and contains 6800 coils, Obtain the mutual inductance of these solenoids
You are standing 2.2m from a 110-W lightbulb. If the pupil of your eye is a circle 5.0mm in diameter, how much energy enters your eye per second
A 4.00 kilogram block starts from rest at the top of a 30 degree incline and slides a distance of 2.10 meter down the incline in 1.40 second. Determine the frictional force acting on the block
A reflecting telescope has a main mirror with fM = 540 mm. If an eyepiece with a magnification of 5 is used, what is the total magnification of the telescope
A toy top has a string wrapped around its body. The string has a length of 64cm and is wrapped around the top at a place where its radius is 2.0cm. What is the final angular velocity in rpm of the top when the string is completely unwound
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