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A worker pushes a 50 kilogram crate along a horizontal floor by a force of 90 Newton at an angle of 240o with the positive x-axis. If the motion is in the x-direction, evaluate what the acceleration of the crate.
The average density of the material in intergalactic space is approximately 2.5 x 10-27 kg/m3. Determine the volume of a gold sample
two small plastic spheres each have a mass of 1.9g and a charge of -52.0 nc. they are placed 3.0cm apart center to
The work function of a particular substance is 4.15 × 10-19 J. What is the photoelectric cutoff wavelength for this material
What is the magnitude of the acceleration of a speck of clay on the edge of a potter's wheel turning at 51 rpm (revolutions per minute) if the wheel's diameter is 37 cm
The area of a typical eardrum is about 5.0 × 10?5 m2. Calculate the sound power incident on an eardrum at the threshold of pain
The G string on a violin has a fundamental frequency of 196 Hertz. calculate the effective length of her string
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 ma..
A particular satellite was placed in a circular orbit about 161 mi above Earth. Determine the orbital speed of the satellite
The temperature near the surface of the earth is 310 K. A xenon atom (atomic mass = 131.29 u) has a kinetic energy equal to the average translational kinetic energy, how high up would it go before coming to rest
Quadrupole moments in the shell model
The heart requires a continuous flow of blood maintain normal function. The average length of the mid left anterior descending coronary artery is 11 cm, Calculate the decrease in pressure along this artery
Two speakers, one directly behind the other, are each generating a 429-Hz sound wave. What is the smallest separation distance between the speakers that will produce destructive interference at a listener standing in front of them? Take the speed of ..
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