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1. What is the relationship between kWh and joules ? explain briefly
2. Exoplain briefly the differences between peak and rms voltage
3. In an AC circuit that contains a resistor, A capacitor, and an inductor, impedance replaces the DC concept of resistance . Explain briefly the difference between the two quantities .
4. An AC circuit with a variable frequency generator, a resistor, and a capacitor is called a high pass filter . Explain briefly
Two carts with masses of 4.5 kg and 3.9 kg move toward each other on a frictionless track with speeds of 5.6 m/s and 4.3 m/s, respectively. The carts stick together after colliding head-on.
A horizontal wire of length 0.43 m, carrying a current of 6.9 A, is placed in a uniform external magnetic field. Determine the magnitude of the external magnetic field
Suppose a diode consists of a cylindrical cathode with a radius of 6.200×10^?2cm, Find its speed (vfinal) when it strikes the anode
Three boxes rest side-by-side on a smooth, horizontal floor. Their masses are 5.0 kg, 3.0 kg, and 2.0 kg, with the 3.0-kg mass in the center. A force of 50 N pushes on the 5.0-kg mass, which pushes against the other two masses. What is the contact..
A 0.321 kilogram mass is attached to a spring with a force constant of 13.3 N/m. find what is its speed when it is 0.128 meter from equilibrium
A student at a rock concert has a seat close to the speaker system, where the average sound intensity corresponds to a sound level of 116 dB. By what factor does that sound intensity exceed the 1.5- Hours/day intensity limits from the graph?
Bats emit a wide variety of sounds, one type emits pulses of sound having a frequency between 39kHz and 78kHz. What is the range of wavelengths of this sound in air
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A 4.00 kg hollow sphere of radius 5.00 cm starts from rest and rolls without slipping down a 30.0 degree incline. If the length of the incline is 50.0 cm, then the velocity of the center of mass of the hollow sphere at the bottom of the incline is:
Neutron stars consist only of neutrons and have unbelievably high densities. Find the density of such a star
as a 32000 lb airplane takes off the tangential component of the force exerted by its engines is ft45000lb. neglecting
Calculate the buoyant force of water on a completely submerged sample volume of 3.4 meter^3.
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