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Q1.Two infinite wires 14 cm apart. The left-hand wire carries a current of 3 A into the paper. The right-hand wire carries a current of 3 A out of the paper. The permeability of free space 4pi x 10^-7 N/A^2 what is the magnitude of the force between these two wires.
Q2. A 66 N m torque acts on a wheel with a moment of inertia 175 kg m2. If the wheel starts from rest, how long will it take the wheel to make one revolution? The system is released from rest and accelerates under the weight of m2.
Q3. Ricardo, mass 83 kg and Carmelita, who is lighter, are enjoying Lake Merced at dusk in a 35 kg canoe. When the canoe is at rest in the placid water, they switch over seats that are 3.5 m apart and symmetrically located with respect to the center of the canoe. Ricardo notices that the canoe moved 54.3 cm relative to a submerged log during the exchange and calculates Carmelita's mass, that she has not told him. What is it?
A block weighing 60.0 N rests on a plane inclined at 25.0° to the horizontal. A force F is applied to the object at 44.0° to the horizontal, pushing it upward on the plane. The coefficients of static and kinetic friction between the block and the pla..
A car traveling 51.9 km/h is 26.2 m from a barrier when the driver slams on the brakes. The car hits the barrier 2.84 s later. How fast is the car traveling at impact
An aircraft takes off at 203 km/h after accelerating from rest at 2.14 m/s2. What is the minimum runway length required
A uniform plank of length 5.8 m and weight 202 N rests horizontally on two supports, with 1.1 m of the plank hanging over the right support (see the Illustrataing). To what distance x can a person who weighs 441 N walk on the overhanging part of t..
Explain how would the results have differed in this experiment if the pulley and of the track was lower that the other end of the track?
In the circuit show in the figure, S1 has been closed for a long enough time so that the current reads a steady 3.5A. What is the maximum charge that the capacitor will receive
You're carrying a 3.40 m-long, 23 poles to a construction site when you decide to stop for a rest. You place one end of the pole on a fence post and hold the other end of the pole 35 from its tip.
Suppose a gas-filled incandescent light bulb is manufactured to have atmospheric pressure in it at 20.0°C. Find the gauge pressure inside such a bulb when it is hot
What would be the fundamental frequency on a piece of the same string that is twice as long and has four times the tension
A compact disk on a CD player rotates clockwise. The disk completes one revolution in 0.220 s. Find the angular velocity of the disk
If water at 15°C is flowing through a 3cm diameter pipe with a velocity of 50 cm-1, calculate the Reynolds number. Is the flow turbulent or laminar?
A sample of gas (? = 1.5) is taken through an adiabatic process in which the volume is compressed form 1600 cc to 400 cc. If the initial pressure is 150 KPa, what is the final pressure? How much work is completed on the gas in process.
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