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In Figure, the resistances are R1 = 0.80 Ω, R2 = 2.50 Ω, and the ideal batteries have emfs ε1 = 2.0 V, and ε2 = ε3 = 2.5 V.
(a) What is the current through each battery? (Take upward to be positive.)
(b) What is the potential difference Va - Vb?
In a friendly game of handball, you hit the ball essentially at ground level and send it toward the wall with a speed of 22m/s at an angle of 39 degrees above the horizontal. How high is the ball when it hits the wall
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a person with a remote mountain cabin plans to install her own hydroelectric plant. a nearby stream is 3.00 m wide and
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Calculate the entropy change for the following system: One kilogram of 80 C aluminum is placed into 2L of 20 C water in a container with negligible heat capacity and adiabatic walls. The water and aluminum reach thermal equilibrium. Assume specific h..
Net horizontal force due to rolling friction
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two balls of radius 2.00 mm have a separation between their centers of 5.33 cm. the same electric charge is placed on
A distant galaxy emits light that has a wavelength of 500.7 nm. On earth, the wavelength of this light is measured to be 503.7 nm. Decide whether this galaxy is approaching or receding from the earth.
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