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Steam locomotives have an eff of 17% and operate with hot steam temp of 425C.
A.) what is the cold temp?
B.) what is the max eff if the cold temp 150C?
A diffraction grating has 2604 lines per centimeter, and it produces a principal maximum at θ = 30.0 °. What are the wavelengths of the incident light that could have produced this maximum
A parallel-plate capacitor has circular plates of 10.4 cm radius and 1.67 mm separation. Calculate the capacitance in picofarads
The plane is inclined at an angle of 24.9 degrees with the horizontal. Using the accerlation due gravity from your reference table. Illustrate what is the magnitude of object's acceleration?
A 900 g rubber ball is dropped from a height of 14 m and undergoes a perfectly elastic collision with the earth. What is the earth's velocity after the collision
A small rock is thrown vertically upward with a speed of 18.0 m/s from the edge of the roof of a 40.0 m tall building. What is the speed of the rock just before it hits the street
Near Earth, the density of protons in the solar wind (a stream of particles from the Sun) is 12.8 cm-3, and their speed is 615 km/s. Find the current density of these protons
A 200 gram ball is attached to a string that is 1 m long and swung in a vertical circle. What is the minimum veocity of the ball so that the string will not slack at the top
A radio with a resistance of 40 ohms and a clock with a resistance of 20 ohms are connected in series on a 120V, What is each power supplied to the circuit in the parallel case, How much power is dissipated by each componant
A slingshot will shoot a 10-g pebble 22.0 mstraight up. How much potential energy is stored in the slingshot's rubber band
An object which has a mass of 3.80 kg has been placed in a small spot of sun for 11.3 min which is shining through a window in a house. what is the temperature of the object after this time period
Calculate for the capacitance, the charge of plate, and magnitude of electric field between the plates for a capacitor whose plates are 11 mm apart are 2.00 m-2 in area and being connected to a source with potential difference of 270V.
An Earth satellite moves in a circular orbit 665 km above the Earth's surface. The period of the motion is 97.8 min. What is the magnitude of the centripetal acceleration of the satellite
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