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what happens to speed of sound in air if you quadruple the temperatur of the air?
How many times larger does it become?
An ant, crazed by the sun on a hot Texas afternoon, darts over an xy plane scratched in the dirt. What are the magnitude and angle (relative to the positive x axis) of the overall displacement
Two parallel wires of length 18 m are separated by a distance of a = 0.13 cm. The first carries a current of I1 = 5 A, What is the magnetic force on each wire
An electron moving along x axis with a constant speed of v = 5x10^6 m/s i enters the region of a uniform electric field, What is the verticle displacement y of the electron 4 ns later
A 66-N m torque acts on a wheel with a moment of inertia 175 kg m2. If the wheel starts from rest, explain how long will it take the wheel to make one revolution?
A Ferris wheel with a radius of 14.0 m rotates at a constant rate, completing one revolution in 30.0 s. What is the apparent weight of a 60 passenger when she is at the bottom of the wheel.
The tension Tu in upper (taut) segment of the belt is 170 N, and flywheel has a clockwise angular acceleration of 1.67 rad/s2. Find out the tension in the lower (slack) segment of the belt.
Illustrate what is the horizontal component of the superhero’s displacement? Draw the vectors to scale on a graph to determine the answer.
Graphically determine the resultant of the following three vector displacements: (a) 34m, 25 degrees north of east ;(b) 48m, 33 degrees east of north; and (c) 22m, 56 degrees west of south.
A transverse electromagnetic plane wave with a frequency of 2.84 MHz travels directly away from you (- z direction). At time t = 0, your magnetic field detector measures a magnetic field of 4.57 × 10-8 Tesla pointing down (- y direction) that further..
An electric motor with a 4.7-hp output drives a machine with an efficiency of 30%. What is the energy output of the machine
protons are projected with an initial velocity v0 = 10410m/s into a region where a uniform electric field E = 710 N/C is present. The protons are to hit the target that lies a horizontal distance of 1.27mm from the point where protons are launched..
A 910 kg sports car collides into the rear end of a 2200 kg SUV stopped at a red light. calculates the speed of the sports car at impact
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