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Explain the graphene material in its different structural forms of foams (3D), thin films (2D), nano-fibers (1D), and nano-dots for supercapacitor electrodes. write answer in detail.
The figure attached shows the Armstrong oscillator. A transformer with two secondary winding's has been use, one to give feedback and one to give the oscillator's output
A 2.6-kg block is hanging stationary from the end of a vertical spring that is attached to the ceiling. What is the elastic potential energy of the system
An 9 hour exposure to a sound level of 90 dB may cause hearing damage. Find what energy in joules falls on a 0.450 centimeter diameter eardrum so exposed
A light ray passes from water into air. The angle of incidence is 37o. Find the angle of refraction in the air
Blood can carry excess energy from the interior to the surface of the body, where the energy is dispersed in a number of ways. determine the temperature of the blood
suppose light coming from the air strikes a rectangular slab of material with index of refraction 2.5 and incident angle 60 degree. At what angle from the normal will it leave the other side of the material?
A certain person can see clearly objects at distances between20cm and 250cm from his eyes, what will be his least distance of distinct vision, when he is wearing the spectales
A laser beam is traveling through an unknown substance. When it encounters a boundary with air, the angle of reflection is 23.0° and the angle of refraction is 40.0°. What is the speed of light in the substance
A 0.43 kg particle moves in an xy plane according to x(t) = - 13 + 4 t - 3 t3 and y(t) = 26 + 9 t - 7 t2, with x and y in meters and t in seconds. what is the angle of the particle's direction of travel
A charged cloud system produces an electric field in the air near Earth's surface. A particle of charge -1.6 x 10-9 C is acted on with a downward electrostatic force of 4.5 x10-6 N when placed in this field. What is the magnitude of the electric fie..
at the local swimming hole a favorite trick is to run horizontally off a cliff that is 8.3 m above the water. one diver
A 0.700 kilogram ball is on the end of a rope that is 1.30 meter in length. Determine what is the tangential speed of the ball
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