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A wooden ice box has a total area of 1.50 m2 amd walls with an average thickness of 2.0 cm. The box contains ice at 0.0 ?degree? C. The inside of the box is kept cold by melting ice. How much ice melts in one day if the ice box is kept in the shade of tree at 29 degree C? (Assume the thermal conductivity of wood is 0.16 kJ/s m degree C)
Students use a simple pendulum with a length of 36.9cm to determine the value of "g". If it takes 12.2s to complete 10 oscillations, what will be their experimental value "g"?
FN represents the normal force on the block, and f represents the force of kinetic friction. What is the weight of the block
400 L of water is at 4 oC. If it took a heat 600 seconds to heat this up to 6 oC, what is the power rating of the heater
A wheel of radius 1.5m rotates at a constant angular velocity. A point at the edge of the wheel experiences centripetal acceleration of 1.2m/s^2. What is the linear speed of that point
A 69.00 kg skier is going down a slope oriented 33° above the horizontal. The area of each ski in contact with the snow is 0.13 m2. Determine the pressure that each ski exerts on the snow.
A mass is suspended from the ceiling of a train car by a 45.4cm long piece of string. A passenger notices that the mass is deflected 14.7cm backward as the train accelerates forward. What is the train's acceleration?
A digital audio compact disc carries data, each bit of whichoccupies 0.6 um along a continuous spiral track from the innercircumstance of the disc to the outside edge. Find the average angular acceleration of the disc
a shaker table is a tool used in engineering tests to find out how a device responds to vibrations. it is simply a
When a certain air-filled parallel-plate capacitor is connected across a battery, it acquires a charge of 200 µC on each plate. What is the dielectric constant of the dielectric slab
A 35-g bullet B is fired with a velocity of 400 m/s into the side of a 3-kg square panel suspended as shown from a pin at A. Knowing that the panel is initially at rest, determine the components of the reaction at A after the panel has rotated 90°..
A 300 g mass of mercury at a temperature of 250°C is poured into a container filled with 500 g of water at 20°C. The container is a copper cup of mass 70 g which is also initially at 20°C. What is the final temperature of the system?
two workers push horizontally in the same direction on a 250 kg wooden crate that is on a wooden floor. What total force must they exert to start the crate moving
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