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The mean distance between earth and the sun is 1.50 multiplied by 1011 m.The average intensity of solar radiation incident on the upperatmosphere of the earth is 1390 W / m2. Assuming the sunemits radiation uniformly in all directions, what is the total power radiated by the sun?
.A cosmic-ray proton in interstellar space has an energy of 10.0 MeV and executes a circular orbit having a radius equal to that of Mercury’s orbit around the Sun (5.80 m). Illustrate what is the magnetic field in that region of space?
What is the electric potential energy of an electron at the negative end of the cable, relative to the positive end of the cable? In other words, assume that the electric potential of the positive terminal is 0V and that of the negative terminal i..
A lawn mower ( 25 kg ) is pushed downward with a force of 50 N at an angle of 60 degree with the horizontal distance of 5 m. what will the speed of lawnmower be after travelling 5 m
The velocity vs time graph of an object is approximated by a triangle which starts at v=0 at t=0, rises to a maximum of v=6 m/s at t=6 sec, then returns to zero at t=10 sec. How far did the object travel?
A 6.70-µC particle moves through a region of space where an electric field of magnitude 1250 N/C points in the positive x direction, find the magnitude and direction of the particle's velocity
A 2.0 kg, 20-cm-diameter turntable rotates at 100 rpm on frictionless bearings. Two 500 g blocks fall from above, What is the turntable's angular speed
A circuit consists of three resistors (R1=29 , R2=14 , R3=41 ) and a battery(37 V). What is the current coming from the battery
Three identical point charges (q1=q2=q3=5.0 nc) are located at three corners of a square with 1.0 cm each side, find the potential energy U of the electron
The threshold of dark-adapted (scotopic) vision is 4.0 multiplied by 10-11 W/m2 at a central wavelength of 500 nm. how many photons per second enter the eye
The left arm of the tube has a cross-sectional area of A1=10 cm2, and the right arm has a cross-sectional area of A2=5 cm2. find the length of the water column in the right arm of the U-tube
the projection lens in a certain slide projector is a single thin lens. a slide 24.5 mm high is to be projected so that
A pump uses a piston of 15 cm diameter which moves 2 cm/s. What is the fluid velocity of a tube 3mm in diameter
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