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Can someone describe the physics behind this problem, the forces involved are confusing A bicyclist coasts down a 6 degree hill at a steady speed of 4.0 m/s. Assuming a total mass of 75kg, what should be the cyclist's power output to climb the similar hill at the same speed?
A solid cylinder of mass 10 kilogram is pivoted about a frictionless axis through the center O. Find what is the angular acceleration of the cylinder
As a positron moves through a region of space, its speed increases from 2.80 X10^6 m/s to 8.00 X10^6 m/s. The electric force is the only force acting on the positron. Across what potential difference did the positron travel?
A point charge of 8.40 mC is surrounded by an equipotential surface with a radius of 0.262 m. What is the electric potential on the surface
If a star formation switched off in a spiral galaxy, which part of it would get fainter? Bulge, disk, halo, dark matter or globularclusters? What is the essential dissimilarity between formation of spiral and elliptical galaxies?
q1. a lawn roller is rolled across a lawn by a force of 128 n along the direction of the handle that is 16.1 above the
The isotope shift of spectral lines refers to the shift in wave-lengths (or frequencies) due to the different masses of given ele-ments. Find the isotope shifts for each of the four visible Balmer series wavelengths for deuterium and tritium compared..
Using the medium p model of the line, Find the current, voltage, reactive power, real power, & power factor at the sending end of the line.
A loudspeaker on a tall pole broadcasts sound waves equally in all directions. If the sound output is 7.0 W, at what distance from loudspeaker is the sound intensity level 85.7 dB.
Physicians perform needle biopsies to sample tissue from internal organs. A spring-loaded gun shoots a hollow needle into the tissue; extracting the needle brings out the tissue core. Find the impulse imparted by the tissue
A disk of radius R and mass M = 10 g is rotating freely about a fixed axis through its center with angular velocity w = 11 rad/s. A spider of mass m = 0.5 g descends onto the disk and goes along for the ride. The moment of inertia of the disk is I..
Two spherical objects with a mass of 6.86 kg each are placed at a distance of 3.06 m apart. How many electrons need to leave each object so that the net force between them becomes zero?
A projectile is fired with an initial speed of 61.7m/s at an angle of 31.9^\circ above the horizontal on a long flat firing range. Determine the total horizontal distance covered
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