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Question
A lightning transfers charge at a rate of 2.5 x 10* A in a time of 80 us. Calculate the charge transferred during the event, and determine the number of electrons in the lightning. Given that the dielectric breakdown of air is Eo - 3 MV/m, and that the distance between the cloud and the ground is 5 km, estimate the power and energy of the lightning.
The National Company for Transportation is required to buy a new forklift that can handle materials for a distance of 900m, Find the best forklift that can handle 110 000 Units daily
A solid steel cylinder is standing (on one of its ends) vertically on the floor. The length of the cylinder is 3.5 m and its radius is 64 cm. What is the weight of the object
A parallel-plate capacitor has 3.95 cm2 plates that are separated by 4.29 mm with air between them. how much energy does it store
For 140 keV gamma rays, the mass attenuation coefficients for hydrogen and oxygen are 0.26 and 0.14 cm^2/g, respectively. What is the mean free path in water at this energy
A copper cylinder and a brass cylinder are stacked end to end, as in the drawing. Find the amount by which the length of the stack decreases
Draw a circuit for two resistors R1 and R2 in series, in parallel with a third resistor R3 in series with a capacitor C1. What will be the time constant of voltage decay
A cannonball is shot (from ground level) with an initial horizontal velocity of 36 m/s and an initial vertical velocity of 21 m/s. What is the initial speed of the cannonball
A solid iron cylinder (d = 5 cm, L = unknown, SG is on the sheets) is falling inside a tube with constant velocity 9.77 m/s. The gap is 1 mm, it is filled with lubricant oil. What is the oil viscosity (in Pa·s)? Compute shear rate as we did in the ca..
a 80 kev x-ray undergoes a compton scattering with an electron of tungsten and ejects this electron with energy 15ev.
When you place a saltshaker 30 cm from your magnifying glass, a real image forms 30 cm from the lens on the opposite side. What is the focal length of the magnifying glass
A thin film of oil (n = 1.10) is located on a smooth, wet pavement. When viewed perpendicular to the pavement, the film reflects most strongly red light at 640 nm and reflects no light at 512 nm. How thick is the oil film?
Through 8.67 seconds a motorcyclist changes his velocity from v1, x = -43.9 m/s and v1, y = 14.7 m/s to v2, x =-24.5 m/s and v2, y = 29.7 m/s. Discover the components of the motorcycle\'s average acceleration through this process, aav, x and aav, y.
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