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A "bug-zapper" uses a voltage of 4000V provided by a transformer that is connected to a standard household source of 120V.
A) If the primary coil of this transformer has 27 turns, how many turns must there be in the secondary to provide this output?
B) If one bug electrocution requires a current of 0.2mA, what current is drawn from the house current and what is the power required?
A car starts from rest and moves along a straight line with an acceleration of a = (3s -1/3) m/s2, where s is in meters. Resolve the car's velocity and position when t = 10 s.
calculate the average acceleration in m/s^2 (meter per second square), using a coordinate system with the X axis in the direction of the car's original motion and the Y axis toward the side of the road to which the car skids.
A pulley system lifts a 500 lb bloch 2 feet with an effort of 50 lbs. If the 50 lbs moves 30 feet, what is the efficiency of the pully system
The position of an object connected to a spring varies with time according to the expression x = (5.8 cm) sin(9.5?t), Find the period of this motion
A wave has the following properties: amplitude = 0.559 m, period = 0.801 s, wave speed = 13.9 m/s. What is the equation for the wave
A sinusoidal EM wave has an electric field amplitude Em = 30.6 mV/m. What is the average energy density
A small object begins a free-fall from a height of H = 87.0 m at t0 = 0 s. After %u03C4 = 2.20 s, At what height from the ground will the two objects first meet
The electric potential at x = 3.0 m is 120 V, and the electric potential at x = 5.0 m is 190 V. What is the electric field in this region, assuming it's constant? -140 N/C 140 N/C -35 N/C 35 N/C 75 N/C.
A horizontal desk surface measures 2.52 m x 2.05 m. If Earth's magnetic field has magnitude 0.463 mT, what is the magnetic flux through the desk surface
A red light of wave length 6.65x10^-7 is an incident beam perpendicular to a surface of glass. n=1.65 for glass. Calculate wavelength of red light in film
A particular heat engine has a mechanical power output of 6.00 kW and an efficiency of 28.0%, Find the energy taken in during each cycle
In an experiment like you are going to do in Investigation 1 of lab this week, you count the number of beta rays from a 137Cs source. What is the average number of counts
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