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Suppose you wish to make a solenoid whose self-inductance is 1.0 mH. The inductor is to have a cross-sectional area of 1.80 x 10-3 m2 and a length of 0.053 m. How many turns of wire are needed?
A 0.25 kg disk shaped machine part with a radius of8.0 cm rotates eccentrically (off center) about an axis thatis normal to its flat surface, How much greater is this torque than the torque required to rotate the part with the same angular acceler..
1.00 ×1020electrons flow through a cross section of a 3.90?mm?diameter iron wire in 4.50s . The electron density of iron is n =8.5×1028m?3
An electron in an oscilloscope is accelerated as a result of the potential difference between the cathode and anode. The electron has negligible initial speed and a final speed of 2.40 107 m/s. Find the voltage drop from cathode to anode.
A 1460-kg submarine rises straight up towards the surface. Seawater exerts both an upward buoyant force of 16300 N on the submarine, as well as a downward resistive force of 1090 N. What is the submarine's acceleration?
A ball of mass 8.9 g with a speed of 22.4 m/s strikes a wall at an angle 14.0o and then rebounds with the same speed and angle. find the magnitude of the impulse associated with the collision force
a cube of ice is taken from the freezer at -7.1 cand placed in a 96 g aluminum calorimeter filled with 308 g of water
A Carnot engine has an efficiency of 0.861, and the temperature of its cold reservoir is 381 K. Determine the temperature of its hot reservoir
a 21 nf capacitor is connected across an ac generator that produces a peak voltage of 4.8 v.a at what frequency is the
a slide projector needs to create a 98-cm-high image of a 2.0 cm slide. the screen is 300 cm from the slide. what focal
A shop sign weighing 230 N is supported by a uniform 115 N beam as shown in Fig. 9-54. find the vertical forces exerted by the hinge on the beam
You hear a fire truck with a certain intensity, and you are about 1 mile away. Another person hears the same fire truck with an intensity that is about 10 times less. how far is the other person from the fire truck
An air puck of mass m1 = 0.32 kg is tied to a string and allowed to revolve in a circle of radius R = 1.1 m on a frictionless horizontal table. What is the horizontal force acting on the puck
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