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Your beighbor has a cute Bichon-Frise puppy. assume air is 80% Nitrogen and 20% Oxygen.( nitrogen atomic weight is 14 and Oxygen atomic weight is 16) you have inflated your bike tire to 700Kpa and the tire has a volume of 2.0 liters.( one liter =1000 cubic centimeters) and the temperature is 18C.
a. how many grams of air does the tire contain?
b. you suddenly realize that your tire can't exceed a pressure of 500Kpa when the temperature is 28C. How many grams of air should be removed so that your tire is safe?
compute your apparent weight at the top of a Ferris wheel, given that the radius of the wheel is 7.1 , it completes one revolution every 30 , and your mass is 51 .
A wheel 65 cm in diameter accelerates uniformly from 215 rpm to 390 rpm in 6.0 s. How far will a point on the edge of the wheel have traveled in this time.
The resistance of a copper wire of length L meter is 0.1 ohms. If the diameter of the wire is 0.045cm, find out its specific resistance.
A electron is accelerated from rest by the potential difference of 350 V. It then enters a uniform magnetic field of magnitude 200 mT with its velocity perpendicular to the field.
Find an action to decrease the rise time of pulses passing through an amplifier.
define the speed with which the cart reaches positions 3, 2, and 1 (in that order). Neglect friction. Let g = 9.81 m/s2.
what is work done on package by friction.
Suppose a hockey puck slides down a frictionless ramp with an acceleration of 5.90 m/s2, What angle does the ramp make with respect to the horizontal
How much work is done by an applied force that moves two charges of +5.0 µC that are initially very far apart to a distance of 4.6 cm apart?
An archer pulls her bow string back 0.40m by exerting a force that increases uniformly from zero to 25 N. How much work does the archer do in pulling back the bow.
Two negative point charges are separated by 16 and feel a mutual repulsive force of 1.55. The charge of one is three times that of other.
directed into the plane of the computer screen as shown in the figure. Identify the magnitude and direction of the resultant magnetic field at P.
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