Find the rms current and resistance
A resistor connected across an AC power supply has a current given by I=(1.05 A)cos{(300t)} when connected to a power supply with emf 120 V rms.
A) Find the rms current.
B) Find the resistance.
C) Find the average power delivered to the resistor.
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Compare (a) the distance traveled during the time of application of the forces,(b) velocities at the end of the time periods, and (c) accelerations at the end of the time periods in the two cases. For each quantity, state whether you expect the tw
A generator has a 170-turn square coil, 4 cm on a side. A) Find the peak emf in this coil when it's rotating at 105 Hz in Earth's field, B = 5 x 10^-5 T.
A fire extinguisher has a pressure of 10. atm. at 25degC. What is the pressure in atmospheres if the fire extinguisher is used ata temperature of 75degC?
A sample of serum has a mass of 54 mg and a volume of 225 cm^3. What is its density in g/cm^3? What would be the mass of 150 fluid ounces of this serum? What would be the volume of 1 pound of this serum?
A resistor connected across an AC power supply has a current given by I=(1.05 A)cos{(300t)} when connected to a power supply with emf 120 V rms. A) Find the rms current. B) Find the resistance.
There are 40 coins in all. There are 3 more nickels than quarters. The value of the dimes is $4.40 less than the value of the quarters. How many coins of each type are in the jar?
Cyclopentane, CxHy is a simple hydrocarbon. If 0.0956g of the compound is burned in oxygen, 0.300g of CO2 and 0.123g of H20 are isolated. What is the empirical formula of cyclopentane?
Find the number of pebbles needed when the crows beak is 4 inches long, the pitcher has a 5 inch diameter and a height of 12, finally the pebbles are 1 inch in diameter.
An 8.4 kg crate is pulled 4.8 m up a 30° incline by a rope angled 18° above the incline. The tension in the rope is 125 N, and the crate's coefficient of kinetic friction on the incline is 0.25. a) How much work is done by tension, by grav
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