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A fly weighing .3 grams and traveling at 2m/s is swatted by a fly swatter. It is swatted straight back at 5.4m/s and is in contact with the fly swatter for 0.2 seconds. Use conservation of momentum for an elastic collision to find the acceleration of the fly and the force exerted on it by the swatter.
A jet with mass m = 130000.0 kg jet accelerates down the runway for takeoff at 1.5 m/s2. What is the net horizontal force on the airplane as it accelerates for takeoff
There are two identical, positively charged conducting spheres fixed in space. The spheres are 36.2 cm apart, find the initial charge on each sphere
A 4.90 gram coin is located 17.0 centimeter from the center of a turntable. Find the maximum angular velocity with which turntable can spin without the coin sliding
A circuit is built so that the current starts at a voltage source and then passes through three resistors in series before going back to the voltage source. Each resistor has a different resistance: one is 200Ω, one is 300Ω, and one is 1000Ω. ..
In the circuit shown in the diagram below, two thick wires connect a 1.7 volt battery to a Nichrome (NiCr) wire. Each thick connecting wire is 16 cm long, and has a radius of 10 mm. What Is the magnitude of the electric field In the thick copper wire..
Two point charges, +3.33 µC and -6.70 µC, are separated by 1.29 m. What is the electric potential midway between them
An elevator has a mass of 1170kg and carries a maximum load of 786 kg. A constant frictionalforce of 4260 N retards its motion upward. The accelerationof gravity is 9.8 m/s2.
A heat pump keeps a house warm at 72.0 degrees Fahrenheit when the outside temperature is 0 degrees Fahrenheit. How much heat is drawn in from the outside
Point A is at a potential of +250 V, and point B is ata potential of –150 V. An Alpha-particle is a helium nucleus that contains two protons and two neutrons; the neutrons are electrically neutral.
An airplane can be made invisible to radar by coating the plane with a thin layer of an antireflective material. If radar waves have a wavelength of 3.0 cm.
The output voltage of an AC generator is given by ?v = (160 V) sin (50?t). The generator is connected across a 19.0-? resistor, By inspection, what is the maximum voltage
A body is moving with velocity of 8m/s. After 5 Seconds the velocity of the body becomes 18m/s. Find the acceleration of the body
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