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Vector A is 90 degrees from x-axis and has a magnitude of 20m. Vector B is 45 degrees from the x-axis and has a magnitude of 20m. What is the dot product AND cross product of these two vectors?
The one arm of a centrifuge is a solid cylinder ofaluminum with a length of 0.10 m and a cross sectional area of 1.3x 10-4. By how much does the aluminum rod stretch
An electron and a positron each of mass 9.1 x 10^-31 kg, are in the same general vicinity and have very small initial speeds
he femur is a bone in the leg whose minimum cross-sectional area is about 3.1 x 10-4 m2. Find the maximum stress that this bone can withstand
Describe how you walked for each of the graphs that you matched. Explain the significance of the slope of a position vs. time graph. Include a discussion of positive and negative slope.
Two protons are moving directly toward one another. When they are very far apart, their initial speeds are 2.10 x 105 m/s. What is the distance of closest approach?
If on a certain day, eighth patients got admitted in the hospital for that disease what are the chances of three to survive?
High-speed stroboscopic photographs show that the head of a 220-g golf club is traveling at 42 m/s, Find the speed of the golf ball just after impact
A constant force of 200N pulls a 30kg box up a ramp 15m long and 4m high. how much work did the frictional force do in the box
The speed of waves on a guitar string is 113 m/s. What is the fundamental frequency of the string when the effective string length is 68.7 cm?
a golfer tees off on level ground giving the ball an initial speed of 37.5 ms and an initial direction of 40.5deg above
Light of frequency 6.0 x 10^14 hertz strikes a glass/air boundary at an angle of incidence θ1. The ray is partiallyreflected and partially refracted at the boundary, as shown above.The index of refraction of this glass is 1.6 of this frequency. De..
A bead with a mass of 0.02 g and a charge of 20nC is free to slide on a vertical rod. At base of the rod is a fixed 20nC charge.
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