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At normal incidence, the intensity of sunlight at the Earth is 1400 W/m2. Assume for simplicity that all of the incident energy that strikes the Earth is absorbed. What is the force on the Earth due to radiation pressure from the Sun? Compare this with the gravitational force on the Earth due to the Sun.
For a common emitter amplifer, current gain is 70. If the emitter current is 8.8mA, Calculate the collector and base current. Also calculate current gain
When the Sun is directly overhead, a hawk dives toward the ground with a constant velocity of 5.70 m/s at 55.0° below the horizontal
question1loudspeaker of mass 25.0kg is suspended a distance of h 2.40m below the ceiling by two cables that make equal
Consider a closed triangular box resting within a horizontal electric field of magnitude E = 7.40x10^4 N/C, below.
A transverse pulse moves along a stretched cord of length 5.55 m having a mass of 0.130 kg. If the tension in the cord is 13.6 N, find the wave speed
An isotope of beryllium with an atomic mass of 7.017u emits a gamma ray and recoils with a speed of 2.19m/s. find the wavelength of the gamma ray
What is the relationship between current and magnetic force, What is the relationship between the length of the wire and the magnetic force
Fleas have remarkable jumping ability. A 0.55mgflea, jumping straight up, would reach a height of 40cm if there were no air resistance. What is the flea's kinetic energy as it leaves the ground
A spring has a spring constant k = 0.84 N/m. If it is stretched 0.13 m from its equilibrium position, what is the restoring force of the spring
If the patch is 78 meters wide and the average force of air resistance on the skier is 179 newtons, explain how fast is she going after crossing the patch?
A piston cylinder contains ar at 375kPA and 20 degrees celicus. Determine the heat added and the work done, using both Air Tables and Constant specific heat
A tsunami travelling across deep water can have the speed of 750 {rm km/h} and a wavelength of 360 km. what is the frequency.
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