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A 71.9-kg person stands on a scale in an elevator. What is the apparent weight when the elevator is (a)accelerating upward with an acceleration of 1.92 m/s2,(b) moving upward at a constant speed, and(c) accelerating downward with an acceleration of1.97 m/s2?
A cylindrical beaker of height 0.100 and negligible weight is filled to the brim with a fluid of density = 890 . When the beaker is placed on a scale, its weight is measured to be 1.00 .(Figure 1)
A particle moves along the path y= -0.500x^2 (meters) with a constant speed of 5 m/s. Assume dx/dt >= 0. Determine the Cartesian components of velocity
Electrons on a radio broadcasting tower are forced to oscillate up and down the tower 535,000 times each second. What is the wavelength of the radio waves that are produced?
An insect 1.3mm tall is placed 1.0mm beyond the focal point of the objective lens of a compound microscope. Where is the image formed by the objective lens
A child moves with a speed of 5.40 m/s when positioned 14.0 m from the center of a merry-go-round. Calculate the net force (in newtons) exerted on the child, whose mass is 26.0 kg
Two cars start at the origin from rest. The first car accelerates for 3.0s and then continues at a constant velocity, find the distance traveled by the first car
A 2.00 kg block hangs from a rubber cord, being supported so thatthe cord is not stretched. What is the length of the cord in this "stretched" position
A football is kicked straight up into the air; it hits the ground 3.8s s later, What was the greatest height reached by the ball, Assume it is kicked from ground level
q1. a krypton laser produces the cylindrical red laser beam 2.0mm in diameter with 2.0w of power. what is the light
a satellite has a mass of 100 kg and is located at 2.00x 10^6 m above the surface of the earth. estimate the magnitude of the gravitational force on the satellite
A student is reading a lecture written on a blackboard. If the writing on the blackboard is 4.84 cm high, what is the height of the image on her retina
A copper block is removed from a 300^0 C oven and dropped into 1 L of water at 20.0^0 C. The water quickly reaches 25.5^0 C and after that remains at that temperature. What is the mass of copper block.
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