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Calculate a characteristic Reynold's number for an aircraft cruising at 1000km/hr. Make any assumptions necessary and justify them.
A cannon has a barrel 5 m long and fires a 49 kg projectile with a muzzle velocity of 452 m/s. What is the average force on the projectile
What was the velocity of the bullet just before it struck the wooden block? The length of the string is 2 meters.
A sealed tube (0.5 L) in volume confines two moles of an ideal gas at a pressure of 2 atm. What is the average kinetic energy of a gas molecule
A 9410-kg car is traveling at 29.7 m/s when the driver decides to exit the freeway by going up the ramp. compute the Magnitude of the average drag force exerted on the car?
Three long parallel wires are 3.8cm from one another. Determine the magnitude and direction of the magnetic field at the midpoint of the side of the triangle between wire M and wire N
Find the drift velocity of conduction electrons in a gold wire of diameter 2.36 mm when a current of 0.375 A flows in it. The density of conduction electrons in gold is 5.90x10^28m^-3
An incandescent light bulb is rated at 100 W when the applied voltage is 120 V. find the resistance of the bulb when it is operating
Suppose there are two transformers between your house and the high-voltage transmission line that distributes the power. In addition, assume that your house is the only one using electric power. At a substation the primary coil of a step-down tran..
A sample of a particular isotope registers 160 counts per minute. Eight hours later, the detector registers a rate of 10 counts per minute. What is the half-life of the material
An ideal monatomic gas expands isothermally from 0.600 m3 to 1.25 m3 at a constant temperature of 600 K. If the initial pressure is 1.10 105 Pa. Find the work done on the gas
An air puck of mass m1 = 0.24 kg is tied to a string and allowed to revolve in a circle of radius R = 1.0 m on a frictionless horizontal table. What is the horizontal force acting on the puck
A husband and wife take turns pulling their child in a wagon along a horizontal sidewalk. find the magnitude of the pulling force exerted by his wife
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