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Question1
A man of mass 700kg stands in a lift on a set of weighing scales. The scale is calibrated in newtons. Assume a value of 10N/kg for g,
(a) What weight will scale register when the lift is static?
(b) What weight will scale be register when the lift accelerate downwards at 10m/s square?
(c) What weight will scale register when the lift accelerate upward at 10m/s square?
Question2
A negatively charged particle having magnitude of charge q = 0.1 C and mass m = 200 gm moves with speed v = 10m/s 4T making angle is equal to enters a region having magnetic field B 60° with X axis. The direction of magnetic field is out of X–Y plane. A convex lens is placed at a distance 14.3 m from origin. Region of magnetic field starts from origin and extends till lens. Focal length of lens is 50 cm. Take X-axis as principle axis.
Discover the least value of initial velocity of charge so that image formed is virtual.
Illustrate what is the coefficient of static friction between the chair and the floor? What is the coefficient of kinetic friction between the chair and the floor?
If a 4-engine jet accelerates down the runway at 5m/s2 and 3 of the jet engines fail, how much acceleration will the other one produce.
A. how much time does the car take to travel between the two points? B. what is the displacement between the starting and ending points? C. what is the average velocity? D. What is the change in velocity? What is the average (vector) acceleration?
A light bulb is placed 22.2 cm in front of a concave mirror. Calculate the focal length of the concave mirror
In a typical game of squash, two people hit a soft rubber ball at a wall until they are about to drop due to dehydration and exhaustion.
A small block with a mass of 0.170 kg is attached to a cord passing through the hole in a frictionless, horizontal surface .The block is initially revolving at a distance of 0.50 m from the hole with a speed of 0.80 m/s. The cord is then pulled from ..
In a double-slit experiment, slits separated by 1.240e-4 m are illuminated by a coherent 571 nm light source. What is the angular position of the first bright fringe
A shot putter releases the shot with a velocity of 29m/sec at an angle of 22 degrees counterclockwise with the right horizontal
Sean climbs a tower that is 84.7 m high to make a jump with a parachute. what is the potential energy of Sean
A current of 7.35 A in a solenoid of length 12.2 cm creates a 0.397-T magnetic field, How many turns does this solenoid contain
A hollow, thin-walled sphere of mass 12.0kg and diameter 47.0cm is rotating about an axle through its center. find the angular momentum of the sphere
A laser with wavelength d/8 is shining light on a double slit with slit separation 0.450mm. What is the wavelength of the second laser that would place its second maximum at the same location as the fourth minimum of the first laser
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