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Calculate the buoyant force acting on you due to the air you displace. Compute your volume based on mass and assuming that you have a density equal to that of water (1 gram per cubic centimeter). Evaluate the density of air at ground level.
a diffraction pattern is formed on a screen 110cm away from a 0.500mm wide slit. monochromatic 546.1 nm light is used.
Illustrates the physics principles in this problem. An astronaut in his space suit and with a propulsion unit (empty of its gas propellant) strapped to hisback has a mass of 147 kg. During a space-walk, the unit, which hasbeen filled with propella..
a rectangular wire loop of sides 8 cm and 2 cm with a small cut is moving out of a region of uniform magnetic field of
A ball is attached to the spring and allowed to come to rest. It is then pulled down 3.0 cm and released. If the ball makes 55 oscillations in 20 s, what are its mass and maximum speed
A violin string vibrates at 260 Hz when unfingered. At what frequency will it vibrate if it is fingered one half of the way down from the end
A 10-kg cement block moving horizontally at 2.0 m/s plows into apillow and comes to a stop in 0.5s. What is the average impact force on the pillow
A stream of protons and electrons are shot horizontally (from the left edge of the page to the right) with a speed of 1.2 x 10^6 m/s, What is the radius of the curvature and the direction for the curvature that each of these particles undergoes
A speaker at the front of a room and an identical speaker atthe rear of the room are being driven at 421 Hz by the same sound source. How many beats does the student hear per second
Larger animals have sturdier bones than smaller animals. A mouse's skeleton is only a few percent of its body weight, compared to 16% for an elephant. what fraction of the tensile strength is the stress on the femur
a lead wire of cross-sectional area 0.980 mm2 is at a temperature of 2.00 k and carries a current of 0.490 a. a find
A ring with radius R has a total charge Q uniformly distributed around it. To leading order, find the electric field at a point along the axis of the ring, a very small distance z from the center
An electron experiences a magnetic force of magnitude 4.20 10-15 N when moving at an angle of 45.0° with respect to a magnetic field of magnitude 3.90 10-3 T. Find the speed of the electron
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