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Q1. A person whose eyes are H = 1.64 m above the floor stands L = 2.3 m in front of a vertical plane mirror whose bottom edge is 38 cm above the floor. What is the horizontal distance x to the base of the wall supporting the mirror of the nearest point on the floor that can be seen reflected in the mirror?
Q2. A 39.0- body is moving in the direction of the positive x axis with a speed of 361 when, owing to an internal explosion, it breaks into three pieces. One part, who's mass is 7.5, moves away from the point of explosion with a speed of 475 along the positive y axis. A second fragment, who's mass is 3.5, moves away from the point of explosion with a speed of 485 along the negative x axis. What is the speed of the third fragment? Overlook effects because of gravity.
A hydrometer is used to measure the specific gravity of liquids. For a sure liquid a hydrometer reading indicates a specific gravity of 1.15. What is the liquid's density and specific weight? State the answer in SI units.
Find out the minimum values of m1 and m2 such that the overlapping of the bright fringes will occur and find position of the overlap on screen.
Assume air resistance is negligible; from what height (in cm) above the compressed spring was the block dropped.
A uniform density cube of mass m, side 2b, and center at C is placed on a fixed horizontal cylinder of radius r and center O in Earth's gravitational field. The cube is originally put so that C is centered above O, but it can roll from side to side w..
Find out kinetic energy of the merry-go-round
What are angles of refraction
At a right angle to a magnetic field. The acceleration of gravity is 9.81 m/s2. What is strength of the magnetic field necessary to exactly balance the weight of the proton and keep it moving horizontally.
A uniform density cube of mass m, side 2b, and center at C is placed on a fixed horizontal cylinder of radius r and center O in Earth's gravitational field.
A proton moves perpendicular to a uniform magnetic field, B, at 1.6 multiplied by 107 m/s and experiences an acceleration of 1.8 multiplied by 1013 m/s2 in the positive x direction while its velocity is in the positive z direction. Find out the magni..
Discover the least value of initial velocity
A small but measurable current of 1.2*10^-10 A exists in a copper wire whose diameter is 2.5mm compute the current density and the electron drift speed.
Find out the coefficient of sliding friction
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