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1. A spinning object has a moment of inertia of 1.6 kg*m2. It is rotating at a rate of 1rad/s. If the moment of inertia increases to 3 kg*m2, what is the new rotational velocity?
2. A gas orginally occupies a volume of 0.2 m3 at a pressure of kPa. It is slowly allowed to expand until the volume of 0.2 m3 at a pressure of 100 kPa.It is slowly allowed to expand until the volume is 2.0 m3. Assuming the temp is kept constant, the final pressure will be?
3. Two people sit on a see-saw balanced at the center. One person weighs 500 N and sits 1m from the center of balance, the other weighs 600 N, where does he have to sit for the see-saw to stay balanced?
The magnetic flux through a coil of wire containing two loops changes from -23Wb to +33Wb in 0.57s. What is the emf induced in the coil
Starting from the top left corner and moving clockwise the charges are -10 uC, -10 uC, 5 uC, and 5 uC. What is the electric field at the center of the square array of charges
The sliding bar in the figure has a length of 0.513 m and moves at 1.76 m/s in a magnetic field of magnitude 0.263 T. Calculate the magnetic force on the bar
A knob on a turning table rotates circularly with a constant speed of 0.78 m/s in a cirlce with radius= 0.35m. What is the maximum acceleration of the shadow
a 0.50 uF capacitor is charged to a 12V battery. How much electrical potential energy is stored in the capacitor
Two cars travel in the same direction along a straight highway, one at a constant speed of 55 mi/h and the other at 70 mi/h. How far must the faster car travel before it has a 15-min lead on the slower car
Consider a heat pump which is used to cool down a home during the summer. Its coefficient of performance in cooling mode is 4.14. at what rate does it remove heat from the home
An airplane pulls a 24 kg banner on a cable as depicted in the figure below. When the plane has a constant cruising velocity the cable makes an angle of ? = 26°
Three resistors, R1 = 30? , R2 = 71? , and R3=R, are connected in parallel with a 12Vbattery, Find the value of resistance R and currenrt through each resistor
A capillary tube is being used to measure the viscosity of a Newtonian liquid, Estimate the viscosity coefficient for the liquid if a pressure of 2.5 kPa is required to maintain a flow rate of 1 kg/s
A beam of light of wavelength 569 nm traveling in air is incident on a slab of transparent material. Find the index of refraction of the material
The coil in an electric generator has 100 turns and an area of 2.5e-3 m2. Find the magnet strength required for this generator
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