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An x-ray machine uses 260 kV rms at80.0 mA rms when it is operating. The power source is a 420 V rms line.
a) What must be the turns ratio of the transformer?b) What is the rms current in the primary?c) What is the average power used by the x-ray tube?
a circular loop of wire of radius 12.1 cm is placed in a magnetic field directed perpendicular to the plane of the loop
The work required to stretch a certain spring from anelongation of 4cm to 5cm is 30.5J. What is the work required to increase the elongation from 5cm to 6cm
To pass the time in the lunar space station waiting room youdecide to measure the local acceleration due to gravity on themoon. what is the acceleration due to gravity (g) on the moon
A uniform bar balances 26.6 cm from one end. When a 0.740 kg mass is hung from that end, What is the mass of the bar
A 494 g air-track glider attached to a spring with spring constant 7.5 N/m is sitting at rest on a frictionless air track. What is the period of the subsequent oscillations
A plane is flying southeast at 200 km/h. Suddenly, it encounters wind heading 40 degrees north of east at 35 km/h. What is the planes new velocity
The total electric field consists of the vector sum of two parts. One part has a magnitude of E1 = 1200 N/C and points at an angle ?1 = 35o above the +x axis. Find the magnitude and direction of the total field
A wheel 2.25 m in diameter lies in a vertical plane and rotates about its central axis with a constant angular acceleration of 3.50 rad/s2, find the angular position of the point P
A crane at a construction site lifts a concrete block with a mass of 440 kg from the ground to the top of a building with a height of 15.0 m, If the duration of the lift was 3.00 minutes, then what was the average power performed by the crane
A parallel beam of light from a He-Ne laser, with a wavelength of 662nm, falls on two very narrow slits 0.050 mm apart. How far apart are the fringes in the center of the pattern if the screen is 2.5m away.
A soccer ball is kicked with an initial horizontal velocity of 15.0 m/s and an initial vertical velocity of 14.0 m/s. What is the maximum height the ball goes above the ground
A solenoid is to have an inductance of 0.257 mH, a cross-sectional area of 5.56 10-4 m2, and a length of 39.6 cm. How many turns per unit length should it have
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