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The diving board shown in the figure below has a mass of 28 kg and its center of mass is at the board's geometrical center.
Determine the forces that support posts 1 and 2 (separated by 1.4 m) exert on the board when a 60-kg person stands on the end of the board 2.8 m from support post 2. Use positive values for the upward forces and negative values for the downward forces.
according to the lorentz transformation equations what are the x and t coordinates of this event as observed in the
Your spaceship lands on an unknown planet. To determine the characteristics of this planet, Express the planet's mass in terms of the earth's mass
A charged isolated metal sphere of diameter 13 cm has a potential of 9800 V relative to V = 0 at infinity. Calculate the energy density in the electric field near the surface of the sphere.
A gas is contained in a vertical, frictionless piston-cylinder device. The piston has a mass of 4 kg and a cross-sectional area of 40 cm2. Determine the pressure inside the cylinder
A baseball is bunted down the third-base line leaving the bat from a height of 0.850m with an initial velocity of 4.00m/s at an angle of 36.87° above horizontal, what is the baseball's tangential acceleration at maximum height
Two 0.65-m-long conducting rods are rotating at the same speed in opposite directions, and both are perpendicular to a 4.8-T magnetic field. what is the angular speed (in rad/s) of the rods when a spark jumps across the gap
A 54-kg water skier is being pulled by a nylon (Young's modulus 3.7 x 109 N/m2) tow rope that is attached to a boat. What is the change in length of the rope when the skier has an acceleration whose magnitude is 0.59 m/s2
Determine what is the sound intensity level of a sound with an intensity of 2.4 x 10-6 W/m2
A 2.0kg wood block is launched up a wooden ramp that is inclined at a 27? angle. What speed does it have when it slides back down to its starting point
A hydrogen atom is excited from its ground state to the n = 4 state. The atom subsequently emits three photons, one of which has a wavelength of122nm. What are the wavelengths of the other two photons?
Determine the flux of particles escaping from the exobase of Earth's atmosphere using a number density at the exobase of 10^5 particles/cm^3 and a temperature of 700K.
A simple camera lens with focal object length fO= 3 cm perfectly focuses the the image of an object on a photographic film located a distance 14 cm away from the lens. What is the new magnification
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