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The upward normal force exerted by the floor is 670N on an elevator passenger who weighs 710N . A) What is the reaction force to the upward normal force exerted by the floor? B) What is the reaction force to weight of the passenger? C) What is the magnitude of the acceleration? D)What is the direction of the acceleration?
The reel has radius R and moment of inertia I. One end of the block of mass m is connected to a spring of force constant k, and the other end is fastened to a cord wrapped around the reel. The reel axle and the incline are frictionless. The reel i..
A novice skier, starting from rest, slides down a frictionless 34° incline whose vertical height is 128 m. How fast is she going when she reaches the bottom.
Assume that a 16 volt energy source is in a circuit that has a resistance of 10 ohms. Determine the current and power
Light of a wavelength of 661.1 nm is received from a star that is emitting light of wavelength of 659.6 nm. How fast is the star moving relative to the earth
A lamp is designed to operate at a temperature of 3100K. what will be the fractional increase in radiant energy
A two-slit experiment with slits separated by 3.5 10-4 m produces a second-order maximum at an angle of 0.0670°. Find the wavelength of the light used in this experiment
A roller coaster, traveling with an initial speed of 15 meters per second, decelerates uniformly at -7.0 meters per second2 to a full stop
The molar mass of oxygen gas is 32.0 x 10^-3 kg/mol. If the gas is at 16 degrees C, find the root-mean-square speed for an oxygen molecule
What is the force exerted by the scale if the elevator is accelerating downward with an acceleration of 2.6 m/s2. If the elevator's descending speed is measured at 10 m/s at a given point, but its speed is decreasing by 2.6 m/s2, illustrate what is ..
The fastest growing plant on record is the Hesperoyucca whipplei. Suppose a plant of this type grows 2.3 m in 14 days. What is its growth rate in micrometers per second
If the two balls started rolling at the same time at a point 1.2 m behind the edge of the table, will they reach the floor at the same time? define.
A race car, traveling at a constant speed of 50 m/s, driver around a circular track of radius 500 m. What magnitude acceleration does it experience
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