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How much energy is incident from the sun per year (in EJ)? The solar flux at the earth's surface is 1 kW/m2 and one can approximate the earth as a sphere of radius 6400 km. How does this compare with the world total energy produced annually? (use BP or EIA data) . If 70% of the primary energy does no useful work and is wasted how does the energy that does useful work compare with the annual energy incident from the sun?
Kilo k 103
Mega M 106
Giga G 109
Tera T 1012
Peta P 1015
Exa E 136
A listener increases his distance from a sound source by a factor of 3.62. what is the change in the sound intensity level in dB
A charge of -4.01 ?C is fixed in place. From a horizontal distance of 0.0392 m, What is the distance of closest approach
A uniform 2 kg cylinder of radius 0.15m is suspended by twostrings wrapped around it. obtain the acceleration of the center of mass of the cylinder
The range of human hearing extends from approximately 20 Hz to 20,000 Hz. Find the wavelengths of these extremes at a temperature of 20°C. 20 Hz m 20000 Hz m
A bicycle is turned upsdie down and has one wheel spinning at 95.0 rpm. The wheel slows uniformly to a stop in 45.0 seconds. If the wheel were on the ground, what linear distance (in meters) would it travel
questionyou might agree with me that policy deployment and project portfolio management ppm go hand-in-hand. at
1. An aircraft starts at rest and is accelerated at 11.1 m/s2 for 10.1 seconds, at which time the aircraft launches. What is the distance traveled from the starting point to the launch point? Assume the acceleration is constant.
If the coefficient of static friction is 0.500, what minimum force magnitude is required from the rope to start the crate moving
An elevator has a mass of 1170kg and carries a maximum load of 786 kg. A constant frictionalforce of 4260 N retards its motion upward. The accelerationof gravity is 9.8 m/s2. What power must the motor deliver at a instantaneous speed of 3.36 m/s i..
A horizontal pipe contains water at a pressure of 150 {rm kPa} flowing with a speed of 1.30 {rm m/s}. The pipe narrows to one-half its original diameter. What is the speed of the water.
a particular inductor has appreciable resistance. when the inductor is connected to a 12 v battery the current
q1. if a car travelling at 64 kmh will skid 24 m when its brakes lock how far will it skid if it is travelling at 140
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