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An aluminum wire has a resistance of 3.22 omega at 20°C.
a) Determine the electrical resistance at 200°C?
b) Find how much voltage must be placed across this wire (at 20°C) to produce resistive power of 1.5 Watt? Determine how much current is running through the wire?
A slingshot fires a pebble from the top of a building at a speed of 20.00 m/s. The building is 28-m tall. Ignoring air resistance, find out the speed with which pebble strikes the ground when the pebble is fired (a) horizontally (b) vertically str..
The armature of a shunt motor has a mass of 250 kilogram and a diameter of 30 centimeter. Calculate the rotational inertia of the armature
A force of 25.33 N is applied tangentially to a wheel of radius 0.340 m and gives rise to an angular acceleration of 1.20 rad/s^2
A foul ball is hit straight up into the air with a speed of about 25 m/s. How long is it in the air
A 5.00-N salmon swims 20.0m upstream against a current thatprovides a resistance of 1.50N. What is the total work that mustbe done by the salmon
A proton accelerates from rest in a uniform electric field of 628 N/C. At some later time, its speed is 1.10106 m/s. How far has it moved in that interval
Find the frequency in terahertz of visible light with a wavelength of 485 nm in vacuum. What is the wavelength in centimeters of electromagnetic microwave radiation whose frequency is 7.61 GHz?
A child holds a candy bar 10.0 cm in front of a convex mirror andnotices that the image is only one-half the size of the candy bar. What is the radius of curvature of the mirror?
A 1.8-kg cylinder (radius = 0.08 m, length = 0.50 m) is released from rest at the top of a ramp and allowed to roll without slipping. The ramp is 0.82 m high and 5.0 m long. What is its translational kinetic energy? What is its rotational kinetic ene..
a ball made of rubber weighing 1kg is thrown at a wall at 6m/s. A ball of putty weighing 1kg is also thrown at the wall at a speed of 6m/s. Which ball transfers the greater momentum to the wall
two charges are placed between the plates of a parallel plate capacitor. one charge is q1 and the other is q2 4.50
It's possible to estimate the percentage of fat in the body by measuring the resistance of the upper leg rather than the upper arm; the calculation is similar. What are the fractions of muscle and fat in the leg
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