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Q1. 1. A wide, long, insulating belt has a uniform positive charge per unit area σ on its upper surface. Rollers at each end move the belt to the right at a constant speed v. compute magnitude and direction of magnetic field produced by the moving belt at a point just above its surface.
2. A very long cylindrical wire of radius R carries a current I_0 uniformly distributed across the section of the wire. Calculate the magnetic flux throughout a rectangle with a long side W running down the central axis of the wire, and a short side R
Q2. A scaffold of mass 42 kg and length 6.8 m is supported in a horizontal position by a vertical cable at each end. A window washer of mass 71 kg stands at a point 3.2 m from one end. What is tension in (a) the nearer (relative to the person) cable and (b) the farther (relative to the person) cable?
Q3. A projectile is fired at an upward angle of 45° from the top of a 237 m cliff with a speed of 179 m/s. What will be its speed as it strikes the ground below? (Make use of conservation of energy.)
Jane plans to fly from Binghampton, New York, to Springfield, Massachusetts, about 280 km due east of Binghampton, What was the wind velocity
Consider an AC power supply that provides a voltage of 27sin(119t)volts, where t is in seconds. The power supply is hooked up to a 195 resistor. What is the mean current through the resistor
what is the dimension of gravitational force and what is the dimension of acceleration
A hotel elevator ascends 190 m with a least speed of 4.0 m/s. Its acceleration and deceleration both have a magnitude of 1.4 m/s2.
Suppose that when a 12.0-V battery drives a current of 6.7 A through a resistive device, How much is the internal resistance (in ohms) of the 12.0-V battery
What is the maximum speed of the mass. What is the radial acceletation experience by mass while it remains at its max. angular speed.
You create a diffrent kind of pendulum by swinging a meter stick (mass m) on its end. It swings with small oscillations. Determine the angular frequency w ( I=1/3 ML ^2)
A uniform electric field exists in the region between two oppositely charged parallel plates 1.67cm apart, Find the speed of the proton at the moment it strikes the negatively charged plate
A body is moving with velocity of 8m/s. After 5 Seconds the velocity of the body becomes 18m/s. Find the acceleration of the body
A 1.00-kg glider attached to a spring with a force constant 25.0 N/m oscillates on a frictionless, horizontal air track. Find the period of the glider's motion
A high-energy pulsed laser emits a 1.5-ns-longpulse of average power 1.8×1011W. find Determine the energy delivered in each pulse.
How long does it take an automobile travelling 56.50 km/h to become even with a car that is travelling in another lane at 36.50 km/h if the cars' front bumpers are initially 148m apart.
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