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Q1. A rocket of mass 3.18 × 10^5 kg is in flight near earth's surface. Its thrust is directed at an angle of 62.2 ° above the horizontal and has a magnitude of 7.40 × 10^6 N. Find (a) magnitude and (b) direction of the rocket's acceleration. Give the direction as an angle above the horizontal.
Q2. Davisson and Germer Experiment
consider a crystal with the atoms arranged in a cubic array, each atom the distance 0.91 °A from its nearest neighbour. Examine the conditions for Bragg reflection from atomic planes connecting diagonally placed atoms.
(a) Find out the longest wavelength electrons that can produce a first-order maximum.
(b)If 300 eV electrons are used, at what angle from crystal normal must they be incident to produce a first order maximum?
Two people with a combined mass of 120kg hop into an old car with worn-out shock absorbers. This causes the springs to compress by 8.30 cm. When the car hits a bump in the road, it oscillates up and down with a period of 1.70s.
Coherent light with wavelength 599nm passes through two very narrow slits, and the interference pattern is observed on a screen a distance of 3.00m from the slits. The first-order bright fringe is a distance of 4.84mm from the center of central brigh..
How fast can this car round a second curve of radius 320m?
A penny sits on a rotating disk that rotates once every 0.9 s. The coefficients of static and kinetic friction between the penny and disk are 0.58 and 0.48, respectively. For the penny to not slide, what is its largest distance from the center of the..
A 79.0 kg man is riding in a shopping mall. The escalator moves the man at constant velocity from ground level to the floor above, the vertical height of 4.40m.What is the work completed on the man by the gravitational force and the escalator.
Establish steady-state electric field inside Nichrome wire
Batteries are rated in terms of ampere-hours (A h). For example, a battery that can produce the current of 3.00 A for 5.00 h is rated at 15.00 A h. What is the total energy stored in an 8.0-V battery rated at 49.0 A h.
Two wires, each 28.15 cm long, are connected to two separate 9.00 V batteries as shown in the figure. The resistance of the first wire is 5.00 Ω, and that of other wire is unknown (R). If the separation between the wires is 4.55 mm, what value of R w..
Find an average magnitude of the induced emf . A bungee jumper, who's mass is 79 kg, jumps from a tall building. After reaching his lowest point, he continues to oscillate up and down, reaching the low point two more times in 8.2 s.
What is velocity of the boat relative to the shore
What is an average speed for the new trip
How many joules of kinetic energy does a 750-{rm kg} automobile travelling at the typical highway speed of 65 {rm{ mi/h}} have.
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