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Q. A person weighing 700N on a wire. Determine the tension force in the two segments of the wire. left wire 20 degrees and right wire 40 degrees.
Q. In a certain region, the earth's magnetic field has a magnitude of 4.80 10-5 T and is directed north at an angle of 62° below the horizontal. An electrically charged bullet is fired north and 11° above the horizontal, with a speed of 669 m/s. The magnetic force on the bullet is 2.90 10-10 N, directed due east. Determine the bullet's electric charge, including its algebraic sign (+ or -).
Two cars were firstly at rest and side-by-side between two photogates. The mass of cart 1 was 0.505kg. The spring was activated and two carts moved away from one another, passing through the photogates and producing the readings as shown below. Find ..
An airplane flies 200 km due west from city A to city B and after that 295 km in the direction of 26.5° north of west from city B to city C.
Work out the buoyant force due to the surrounding air on a man weighing 800 {rm N}. Imagine his average density is the same as that of water, and surrounding air temperature is 0 rm ^circ C.
A 9kg block is connected by a string over a light pulley to a 5kg block that is sliding over a flat table (i.e. the 9kg is pulling the 5kg off the table). If Co-efficient of kinetic friction is 0.200, find the tension in the string.
What would be the potential difference VC - VB across the thin resistor if the battery emf is 4.00 volts? Suppose that the electric field in the thick wires is very small (so that the potential differences along the thick wires are negligible)
A proton moves perpendicularly to a uniform magnetic ?eld B with a speed of 1.9 × 10 ^7 m/s and experiences an acceleration of 8 × 10 12 m/s 2 in the positive x direction when its velocity is in the positive z direction. The mass of a proton is 1...
Use Gauss law to compute amount of charge
A flight attendant pulls her 72.0 N flight bag a distance of 282 m along a level airport floor at a constant speed. The force she exerts is 33.0 N at an angle of 52.0° above the horizontal.
At one point in a pipeline, water's speed is 3.30 m/s and the gauge pressure is 4.00×10^4 Pa. Find out the gauge pressure at a second point in the line 13.0 m lower than the first if the pipe diameter at the second point is twice that at the first.
Find out the angular velocity at the beginning of the 4.60 interval; the angular acceleration of the flywheel.
Quadrupole moments in the shell model
The basic concepts in optics.
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