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An auto race is held on a circular track. A car completes onelap in a time of 21.5 seconds, with an average tangential speeed of38.1 m/s.
What is the average angular speed?
What is the radius of the track?
A 120-V motor has mechanical power output of 2.50 hp. It is 90% efficient in converting power that it takes in by electrical transmission into mechanical power. Find the current in the motor
Determine and explain the ways a corporation can use advanced Excel tools such as MIN and MAX statement, conditional formatting, and additional tools that have found to manage their business finances.
Four identical charges, +Q, occupy the corners of a square with sides of length a. A fifth charge, q, can be placed at any desired location. Find the loction of the fifth charge, and value of q, such that the net electric force acting on each of t..
The wave function y(x, t) for a certain standing wave on a string fixed at both ends is given by y(x, t) = (0.05 m) sin (1.8 m-1x) cos (400 s-1t). What is the shortest possible length of the string
What is the escape speed on a spherical asteroid whose radius is 500.0 km and whose gravitational acceleration at the surface is 3.11 m/s^2, With what speed will an object hit the asteroid
To correct myopia, is it necessary to move the image formed by the eye closer to or farther from the eyes lens system, Is the curvature of this lens concave or convex
Two teams of nine members each engage in a tug of war. The first team's members have average masses of 70 kg and exert average forces of 1350 N horizontally, What is the acceleration of the two teams
A piano tuner plays an out of tune A note on his piano and then strikes his 440 Hz tuning fork. What was the frequency of the note before he loosened the string
A large circular capacitor with a radius of 5 m is separated by 3 mm of air. Suppose 9 V is placed across the capacitor. What is the charge magnitude that builds up on the two plates
A 4.20–kg block is set into motion up an inclined plane with an initial speed of vi = 7.40 m/s (see figure below). The block comes to rest after traveling d = 3.00 m along the plane, which is inclined at an angle of ? = 30.0° to the horizontal.
. Once the crate has started to move, expalin how large must F be in order to keep the crate moving at a constant speed?
At the end of the run, she is 175 m away from the starting point at an angle of 15.0° north of west. Illustrate what were the direction and length of her second displacement? Use graphical techniques.
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