Potential difference between the bird feet
A bird sits on a high-voltage power line with its feet 2.6 cm apart. The wire is made from aluminum, is 2.7 cm in diameter, and carries a current of 177 A. What is the potential difference between the bird's feet? answer in mV
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Inside a starship at rest on the earth, a ball rolls off the top of a horizontal table and lands a distance from the foot of the table. This starship now lands on the unexplored Planet X. The commander, Captain Curious, rolls the same ball off the
Taking the clockwise direction to be the negative direction, what is (a) the net torque produced by the two forces and (b) the angular acceleration of the disk?
Two objects are maintained at constant temperatures, one hot and one cold. Two identical bars can be attached end to end, as in part a of the drawing, or one on top of the other, as in part b. When either of these arrangements is placed between th
Two small metal spheres with masses 2.0 {rm g} and 4.0 {rm g} are tied together by a 5.3-{rm cm}-long massless string and are at rest on a frictionless surface. Each is charged to +2.3 mu C. What is the energy
Which of the following was not practices connected with momaticism?
To give different currents through the wires along the long sides of the valve, a resistor is inserted into the wire on each of these sides. The value of the resistor on one side is twice that on the other side.
A 29 g ice cube at 0?C is placed in 805 g of water at 89?C. What is the final temperature of the mixture? The specific heat of water 4186 J/kg · ?C and latent heat of fusion of water 3.33 × 105 J/kg. Answer in units of ?C.
A car starts from rest and travels for 8.0 s with a uniform acceleration of +1.5 m/s2. The driver then applies the brakes, causing a uniform acceleration of -2.0 m/s2. If the brakes are applied for 2.0 s, how fast is the car going at the end of th
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