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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.
A laser beam of unknown wavelength passes through a diffraction grating having 5510lines/cmafter striking it perpendicularly. At what angle will the next pair of bright spots occur
On a frictionless, horizontal air table, puck A (with mass 0.250 kg) is moving toward puck B (with mass 0.370 kg), which is initially at rest. What was the speed of puck A before the collision
The first player has an acceleration whose magnitude is 0.5 m/s^2 and the second player's has an acceleration of 0.3 m/s^2. Explain by how much time passes before hey collide?
A hydrogen atom is in its fourth excited state (n = 5). Using the Bohr theory of the atom, calculate the linear momentum of the electron
consider the bohr model of the one ecectron atom Be+3, calculate the radius,in nm,of ground state orbital
Gold is the most ductile of all metals. For example, one gram of gold can be drawn into a wire 2.25 km long. What is the resistance of such a wire at 20°C
Ice at -10.2 °C and steam at 136 °C are brought together at atmospheric pressure in a perfectly insulated container. After thermal equilibrium is reached, the liquid phase at 53.0°C is present.
A heat engine using a diatomic ideal gas goes through the following closed cycle: Isothermal compression until the volume is halved. What is the thermal efficiency of this heat engine
What is an angular speed about the center of mass
Calculate the ground state energy and corresponding speed of a particle of mass 1.0 g in a box of length L=10.0 cm assuming the particle in a box model. Compare these quantities with those of an electron in a box of length 1.0 ..
Ball A is attached to one end of a rigid massless rod, while an identical ball B is attached to the center of the rod, Find the tension in each half of the rod
In two different cases, two blocks are sliding to the right across a horizontal surface. In Case A the mass of each block is 3.9 kg. determine the magnitude of the acceleration of the blocks
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