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The coil of wire in a galvanometer has a resistance of RC = 64.0 . The galvanometer exhibits a full-scale deflection when the current through it is 0.290 mA. A resistor is connected in series with this combination so as to produce a voltmeter. The voltmeter is to have a full-scale deflection when it measures a potential difference of 25.0 V. What is the resistance of this resistor?
In a perfectly inelastic collision, two identical 2kg objects collide head to head. What is the total linear momentum after collision
An infinite line of positive charge lies along the y axis, with charge density ? = 1.20 ?C/m. find the magnitude of the net force exerted on the dipole
what is the total amount of work done by friction. The supplies should be dropped how various seconds before the plane is directly overhead.
A lamp is designed to operate at a temperature of 3100K. what will be the fractional increase in radiant energy
Calculate the angular wave number and the speed of the wave.
A cannon fires a cannonball from the top of a wall at a speed of 25.58 m/s and an angle of 17.44 degrees from the horizontal. What is the horizontal distance from the wall where the fired cannonball hits the ground
A resistor is made on a disk, allowing current to flow radially from its center to the outside. The center of the disk is a conductor producing the current with radius 0.5 mm. What is the total resistance
The moon orbits the earth at a distance of 3.85 x 108 m. Assume that this distance is between the centers of the earth, Find the period for the moon's motion around the earth
A rubber balloon filled with air is rubbed against a wool sweater and acquires a negative charge. The balloon is placed up against a flat wall and released. The balloon stays stuck to the wall. How is this possible if the wall is not charged in an..
The temperature of a silver bar rises by 10.0°C when it absorbs 1.23 kJ of energy by heat is 525 grams. determine the specific heat of silver
a 50 kg toy airplane is suspended from the ceiling by a 1.6m cord and rotates in a horizontal circle. If the cord makes an angle of 35 degrees with the vertical, A) Find the speed of the plane B) Find the tension in the cord
A circuit contains a 150-? resistor, a 0.0530-H inductor, a 0.420-?F capacitor, and a source of time-varying emf connected in series. Determine the voltage drop across the inductor
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