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A silver bar of length 30 cm and cross sectional area 4.0 cm2 is used to transfer heat from a 100°C reservoir to a 0°C block of ice. How much ice is melted per second?
In fact, the increased normal force at these large angles makes force of friction too large to move the lawnmower at all.
A resistance R and a 3.4-H inductance are in series across a 60-Hz ac voltage. The voltage across the resistor is 34 V and the voltage across the inductor is 39 V. Assume that all voltages in this problem are rms voltages. (a) What is the resistance ..
Two charges q1 = 6 µC, q2 = -49 µC, are L = 19 cm apart. A third charge is to be placed on the line between the two charges. How far from q1 should the third charge be placed so that the net electric force on the third charge is minimized?
Measurements of the radioactivity of a certain isotope tell you that the decay rate decreases from 8305decays per minute, What is the half-life T1/2 of this isotope
A laser beam in air is incident on a liquid at an angle of 38.0 with respect to the normal. What is the critical angle for total internal reflection for this fluid
Calculate P necessary to just start opening the 2 m wide gate.
A 108m long train starts from rest (at t=0) and accelerates uniformly. At the same time (at t=0), a car moving with constant speed in the same direction reaches the back end of the train. find the cars speed and the trains acceleration
A boy drags his 8.00 kg sled at constant speed up a 10.0 degree hill. He does so by pulling with a 40.0-N force on a massless rope attached to the sled. find the coefficient of kinetic friction between sled and snow
This is a two part question. Ron runs west for 30 minutes at a speed of 8 mi/h. What is the total distance that Ron has run
A hydrogen atom is in its first excited state n=2. Using the Bohr theor yof the atom, calculate linear momentum of the electrons
Which color has the highest index of refraction
Find the average force on the driver if the deceleration is accomplished gradually by the application of brakes over a 11.1 s interval
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