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A hang glider and its pilot have a total mass equal to 119 kg. While executing a 360° turn, the glider moves in a circle with a 9 m radius. The glider's speed is 15 m/s. (Assume the glider turns along the horizontal plane.)
(a) What is the net force on the hang glider?
(b) What is the acceleration?
Three equal point charges, each with charge 1.95 , are placed at the vertices of an equilateral triangle whose sides are of length 0.400 . What is an electric potential energy of the system? (Take as zero the potential energy of the three charges ..
Heat is extracted from a certain quantity of steam at 100 degrees celsius. Thus the steam changes into ice at 0 degrees celsius. If this energy were used to accelerate the ice from rest, what would be the linear speed of the ice.
A certain superconducting magnet in the form of a solenoid of length 0.30 m can produce a magnetic field of 13.0 T in its core when its coils carry a current of 105 A. The windings, made of a niobium-titanium alloy, must be cooled to 4.2 K. Find o..
A 128 carton is pulled up a frictionless baggage ramp inclined at 30.0 above the horizontal by a rope exerting a 72.60 pull parallel to the ramp's surface. If the carton travels 5.20 along the surface of the ramp, compute the work done on it by the r..
What is the magnitude of the net force on the student. A student who weighs 470N is wearing a backpack that weighs 84N. The student is standing still on level ground.
A research-level Van de Graaff generator has a 1.9-m-diameter metal sphere with a charge of 4.9 mC on it, What is the potential near its surface in MV
If astronauts could travel at v = 0.950 c, we on Earth would say it takes (4.20 / 0.970) = 4.42 years to reach Alpha Centauri, 4.20 light-years away. The astronauts disagree. How much time passes on astronauts' clocks? What is the distance to Alph..
A hydraulic lift is used to jack a 970 kg car 13 cm off the floor. The diameter of the output piston is 18 cm, and the input force is 250 N. Calculate the combined work input of all of the strokes
If a compressive force of 3.2×104N is exerted on the end of a 18cm long bone of cross-sectional area 4.3cm2 , will the bone break, By how much does it shorten
What should be coefficient of static friction
A photon has an energy equal to the kinetic energy of an electron with speed, u, which may be close to the speed of light, c. Calculate the ratio of the wavelength of the photon to the wavelength of the electron
An oscillating mass-spring system has A total energy of 1.18J , amplitude of 9.84cm, Find the spring constant , the mass of the block and the angular frequency
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