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an engine performs a total of 15000 j of work in one minute: what is its power output in kilowatts and in horsepower.
A typical coal-fired power plant burns 340 metric tons of coal every hour to generate 750MW of electricity. 1 metric ton= 1000 kg. What is the power plant's thermal efficiency
A window washer with a mass of 79.0 kg stands a distance, D = 0.800 m, from the left end of a plank of length, L= 1.90 m, Find T2, the tension in the right cable
A photon with wavelength 0.02680 nm strikes a free electron that is initially at rest. What is the de Broglie wavelength of the electron after its collision with the photon
The fan blades on a jet engine make one thousand revolutions in a time of 76.5 ms, What is the angular frequency of the blades
While in church, Peter notices a lamp hung by a light chain to the ceiling. Peter counts 85.0 cycles in 592 seconds. How high is the ceiling above the lamp
A small sphere of mass m = 6.10 g and charge q1 = 29.2 nC is attached to the end of a string and hangs vertically. A second charge of equal mass and charge q2 = 58.0 nC is located below the first charge a distance d = 2.00 cm below the first charg..
A 45cm radius insulated sphere is charged so that the volume charged density is a function of the radius: Charge denisty=(34microC/m^4)r. Integrate to determine the total charge on the sphere.
A block with mass m = 4 kg is sitting on the ground and not moving. The acceleration due to gravity is g = 9.81 m/s2. Please answer the following questions.
A 0.44T magnetic field is perpendicular to a circular loop of wire with 52 turns and a radius of 17cm. what is the magnitude of the induced emf
Suppose that a parallel-plate capacitor has circular plates with radius R = 40.0 mm and a plate separation of 4.0 mm. Suppose also that a sinusoidal potential difference with a maximum value of 340 V and a frequency of 120 Hz is applied across the pl..
Phil finds an old bone at an archeological site and decides to date it. The site is located geographically at a position where the ratio of 14C to 12C in the atmosphere before the year 1900 was about 1.31 · 10-12
Ultrasonic acoustic waves are diffracted by a pair of parallel slits 100mm apart. The zeros in the diffraction pattern are spaced at angular intervals of 8.3 degrees. Calculate the wavelength.
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