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10 kg of water at 20 degrees C converted to ice at -10 degrees C by being put in contact with a reservoir at -10 degrees C. This process takes place at constant pressure and the heat capacities at constant pressure of water and ice are 4180 and 2090 J/kg deg respectively. The heat of fusion of ice is 3.34x10^5 J/kg. Calculate the change in entropy in the universe.
An electromagnetic wave traveling in the negative x direction has an electric field amplitude of 10.0 V/m in the positive y direction. calculate the amplitude of the magnetic field
A flat rectangular coil 15.0 cm wide and 18 cm long, Calculate the emf produced
A 3.00 g lead bullet traveling at 650 m/s strikes a target, converting its kinetic energy into thermal energ, Find the heat required to melt the bullet
5 moles of an ideal gas, initially at P=105 Pa and V=3m3, expand adiabatically until the volume is doubled, How much work was done in the adiabatic step
A child pulls an imaginary friend in a wagon at constant speed for 10m with a force of 16N. how much work does the child do
A 9.59-g bullet, moving horizontally with an initial speed v0, embeds itself in a 1.45-kg pendulum bob that is initially at rest. Find the initial speed of the bullet.
a particle with charge -6.24 times 10-6 coulombs is released at rest in a region of constant uniform electric field.
A 0.500 kg hammer is moving horizontally at 6.50 m/s when it strikes a nail and comes to rest after driving it 1.00 cm into a board. Calculate the duration of the impact
A 0.27 kg rock is thrown perpendicularly upward from the top of the cliff that is 32 m high. When it hits the ground at the base of cliff, the rock has a speed of 29 m/s. suppose that air resistance can be ignored, find out A) initial speed of the ro..
In the steady state 1.8 1018 electrons per second enter bulb 1. There are 6.3 1028 mobile electrons per cubic meter in tungsten. The cross-sectional area of the tungsten filament in bulb 1 is 1 10-8 m2. The electron mobility in hot tungsten is 1.2 10..
A solid disk rotates in the horizontal plane at an angular velocity of 0.036 rad/s with respect to an axis perpendicular to the disk at its center, what is the angular velocity of the disk
A ball is launched directly upward from ground level with aninitial speed of 19 m/s. (Air resistanceis negligible.) How long is the ball in the air? What is the greatest height reached by the ball?
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