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You have a cup containing 220 g of freshly brewed coffee which, at 75C, is too warm to drink. If you cool the coffee a little by pouring 60 g of tap water at 26C into the cup, estimate how much the entropy of the universe increases.
A 0.20 kg aluminium plate with an initial temperature of 20 degrees c slides down a 15.00m long surface that is inclined at 30 degrees to the horizontal.
A particle of ionizing radiation creates 4900 ion pairs in the gas inside a Geiger tube as it passes through. What minimum energy was deposited
A stunt man whose mass is 70 kg swings from the end of a 3.10 m long rope along the arc of a vertical circle. Assume that he starts from rest when the rope is horizontal; find the tensions in the rope that are necessary to make him follow his circ..
Calculate the work done by the electric field force on an electron when the electron moves from point O, where the potential is -30.0 V, to point F,
What are the x-component and y-component of the velocity.
A quantity of a gas has an absolute pressure of 400 kPa and an absolute temperature of 110 degrees kelvin. When the temperature of the gas is raised to 235 degrees kelvin, illustrate what is the new pressure of the gas?
A 0.65kg block of ice is sliding by you on a very slippery floor at 3 m/s. As it goes by, you give it a kick vertical to its path. Your foot is in contact with the ice block for 0.003 seconds.
If the radius of curvature of the cornea is 0.65cm when the eye is focusing on an object 36.0 cm from the cornea vertex and the indexes of refraction are as described before, what is the distance from the cornea vertex to the retina
When an object is moving with uniform circular motion, which of the following statements is correct for the tangential velocity? It acts towards the center, It acts away from the center, It is perpendicular to the plane of the circle, or It is per..
A transformer has 350 primary turns and 1290 secondary turns. The input voltage is 120?V and the output current is 15.5A . Assume100% efficiency, What is the output voltage
What is the charge on the drop. A 13 kg child on a playground swing moves with a speed of 3.6 m/s when the 6.0 m long swing is at its lowest point. What is the angle that swing makes with the vertical when the child is at the highest point.
What is the energy released in this nuclear reaction 47Be + 01n ? 37Li + 11H
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