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A charge of 810 C was passed through a wire in 5.70min. What was the average electric current during that interval?
The rms current in an ac circuit with a resistance of 130? is 0.70A. What is the maximum power consumed by this circuit
A prospector finds a solid rock composed of granite (? = 2650 kg/m3) and gold. The volume of the rock is 3.40 10-4 m3 and its mass is 3.87 kg. What percentage of the rock is gold by mass
A duck has a mass of 2.6 kg. As the duck paddles, a force of 0.11 N acts on it in a direction due east. In addition, the current of the water exerts the force of 0.12 N in a direction of 44° south of east. When these forces begin to act, the velocity..
A uniform bar is 5.00 m long and weighs 975 N. A weight of 255 N is attached to one end while a weight of 375 N is attached 1.50 m from the other end. Find the tension in the cable
An access door in a ceiling is 0.91m square, has a mass of 11kg, what are the magnitudes of the forces on the catch and the hinge from the door
To what distance x can a person who weighs 411-N walk on the overhanging part of the plank before it just begins to tip.
Find out the magnitude of the friction force acting on the case. Laser light with a wavelength = 680 illuminates a pair of slits at normal incidence. What slit separation would produce first-order maxima at angles of 40 from the incident direction.
Three astronauts, propelled by jet backpacks, push and guide a 114 kg asteroid toward a processing dock, exerting the forces, with F1 = 32 N, F2 = 52 N, F3 = 39 N, θ1 = 30°, and θ3 = 60°. What is the (a) magnitude and (b) angle (measured relative ..
A jeweller working with a heated 44 g gold ring must lower the ring's temperature to make it safe to handle. If the ring is initially at 94 degrees Celsius, what mass of water at 25 degrees Celsius is necessary to lower the ring's temperature to 35 d..
A gas cylinder of volume 26 liters contains an ideal gas at temperature 27 degrees C and pressure 1920 kPa. How many moles of gas leaked
The orbit of earth's moon has a period of 27.3 days and a radius (semi-major axis) of 2.56 x 10-3 A.U. (= 3.84 x 105 km). What is the mass of Earth? What are the units? Show the work.
A converging and a diverging lens of equal focal length are placed coaxially in contact. Find the focal length and power of the combination
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