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A 9.0 ohm and a 6.0 ohm resistor are connected in series with a power supply. (A) the voltage drop across the 6.0 ohm resistor is measured to be 12 V. find the voltage output of the power supply. (B) the two resistors are connected in parallel across a power supply, and the current through the 9.0 ohm resistor is found to be 0.25 A. find the voltage setting of the power supply?
A long thin uniform rod lies motionless in a friction freehorizontal plane along the y-axis. It is pinned to the ground witha friction free pivot. what force does the pin apply to the rod iniitially
A cannonball launched with an initial velocity of 161 m/s at the angle of 45 degrees follows a parabolic path and hits a balloon at the top of its trajectory. Neglect air resistance, how fast is it going when it hits the balloon? What is the accelera..
A baseball pitcher pivots his extended arm about his shoulder joint, applying a constant torque of 197 N · m for 0.24 s to his arm, Find his arm's angular acceleration and final angular velocity
A clock in a spaceship is observed to run at a speed of only 3/5 that of a similar clock at rest on Earth. How fast is the spaceship moving
A pipe open at one end has a fundamental frequency of 256 Hz. A second pipe,identical to first pipe, is shortened by cutting off a portion of the open end. When both pipes vibrate at their fundamental frequencies, a beat frequency of 12 Hz is heard..
A skater with an initial speed of 7.60 m/s is gliding acrossthe ice. Air resistance is negligible. How far will the skater travel before coming to rest
q1. an aluminum cup contains 225 g of water and a 40-g copper stirrer all at 27degc. a 400-g sample of silver at an
A transformer has 280 turns in the primary and 110 turns in the secondary. by what factor does it change the voltage
A very long, straight solenoid with a cross-sectional area of 5.75cm^2 is wound with 36 turns of wire per centimeter, What is the average induced emf in the secondary coil
A hand grenade (m=580g) slides across the (essentially frictionless) floor at a speed of 0.86 m/s. determine the speed of the second fragment
An object is placed 130 cm in front of a converging lens of focal length 16 cm. What is the distance to the image
A student drops two metallic objects into a 120 g steel container holding 150 g of water at 25°C. What is the mass of the aluminum chunk
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