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An object is moving with constant acceleration. During 24 s of the motion the object traveled 40 m and during the same 24 s the object speedincreased 4 times. Calculate the acceleration.
An engine removes 300 J from a reservoir at 290 K and exhausts 250 J to a reservoir at 200 K. What is its efficiency? How much more work could be done if the engine were reversible?
A student wants to lose some weight. He knows that rigorous aerobic activity uses about 700 kcal/h (2900 kJ/h) and that it takes about 2000 kcal per day (8400 kJ) just to support necessary biological functions, at what rate will this student "burn"..
A sound wave has a frequency of 677 Hz in air and a wavelength of 0.50 m. What is the temperature of the air
An object falls from a height h from rest. If it travels a fraction of the total height of 0.5612 in the last 1.00 s, Find the height of its fall
The wire in a 150 W aquarium heater has a diameter of 0.12 mm and is made of iron, What resistance should the wire have while the heater is operating
Light of wavelength 605 nm falls on a double slit, and the first bright fringe of the interference pattern is seen at an angle of 12.0° from the central maximum. Find the separation between the slits. µm
Two point charges, Q_1 = -6.1 mu C and Q_2 = 2.0 mu C, are situated between two oppositely charged parallel plates. The two charges are separated by a distance of x = 0.30 m. suppose that the electric field produced by the charged plates is unifor..
a spherical void of radius r has cut inside the sphere, find the electric field inside the void if its center is displaced by vector R
A 1.80x10^2 kg piano is being lifted at a steady speed from ground level straight up to an apartment 18.00 m above the ground. The crane that is doing the lifting produces a steady power of 4x10^2 W. How much time does it take to lift piano.
A doubly ionized carbon atom (with charge 2e) is located at the origin of the x axis, and an electron (with charge -e) is placed at x = 7.26 cm. There is one location along the x axis at which the electric field is zero. Give the x coordinate of this..
A beam of natural light with an irradiance of 330 W/m^2 impinges on the first of two consecutive ideal linear polarizers whose transmission axes are 67.0° apart
A charge of -5.8 micro-Coulombs is placed at x = 0, y = 0. A charge of +17.1 micro-Coulombs is placed at x = 0, y = +36 cm. Another charge of +34.8 micro-Coulombs is placed at x = +33 cm, y = 0 cm. What is the magnitude of the total electric force..
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