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A 1kg block of ice at 0o C falls into alake whose water is also at 0o C, and 0.01 kg of the icemelts. What was the minimum altitude from which the ice fell?
An ice skater spinning with outstreched arms has an angular sped of 4.0 rad/s. She tucks her arms in, decreasing her moment of inertia by 7.5%. Where does the extra kinectic energy come from
Estimate the volume of your body. (Consider your body to be a cylinder having a radius of about 6 inches (or 0.15 m) and a height of about 1.5 meters
A sphere with radius 0.185m has density p that decreases with distance r from the center of the sphere according to p=3250 kg/m^(3) - (8750 kg/m^(3))r. Find total mass of the sphere
Starting from rest, a 12-cm-diameter compact disk takes 3.3s to reach its operating angular velocity of 2500rpm. How much torque is applied to the disk
Compute what resolving power is needed to measure with a spectrograph the natural line width of the alpha particles from Po-212
During a process, 21.6 MJ of heat is added to a closed system. If the internal energy is increased by 59.6 MJ: How much work in Btu was done, Was this work done on or by the system
The equation of a transverse wave on a string is given by the formula below. Find the linear density of this string in grams per meter
You sing into a well and find that the well resonates at frequencies of 231 Hz and 273 Hz with no resonances between these two frequencies. What is the frequency of the fundamental mode
A zero-friction (air bearing) cart is launched at a speed of 1.85 m/s up a slightly inclined track. How far does the cart travel from launch until the time it comes to rest
A point charge with a charge q1 = 2.60?C is held stationary at the origin. How much work is done by the electric force on q2
A hollow cubical box is 0.30 m on an edge. What is the depth of the water in the box just at the instant that water from the lake begins to pour into the box from the lake
The temperature of 3.00 mol of an ideal diatomic gas is increased by 40 degrees C without a change in pressure, How much energy is transferred to the gas as heat
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