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A 15.0-kg block of ice at 0.00°C falls into Lake Superior, which is a fresh water lake. The lake water is at 10.0°C, and the latent heat of fusion for ice is 3.34 × 105 J/kg.
Find the change in entropy of the block of ice due to themelting of the ice.
A rock is dropped from a high tower and falls freely under the influence of gravity. Which one of the following statements concerning the rock as it falls is true? Neglect the effects of air resistance.
A pendulum bob of mass m is released from a height H above the lowest point. Find the heights to which the bobs rise given that the collision is
The speed of a bullet can be measured by firing it at a wooden cart initially at rest and measuring the speed of the cart with the bullet embedded in it. What is the bullet's speed before it strikes the cart
Each of the four circuits in the drawing consists of a single resistor whose resistance is either R or 2R, and a single battery whose voltage is either V or 2V. determine the current delivered to each resistor
Determine the maximum deceleration it will experience and at what altitude? The capsule's BC is 1000 kg/m2 - what is the average drag acceleration ( in g's) we must attain?
Does papillary muscles contract after the other ventricular muscles so that they can take up the slack on the chordae tendineae before the full force of ventricular contractions sends blood against the AV valve flaps.
A large window measures 1.8m by 3.2m . At what rate will heat be conducted through the window when the room temperature is 27C and the outside temperature is 0C if the window consists of a single pane of glass 4.4mm thick. (Assume that there is a con..
The diameter of the He atom is approximately 0.10nm. Compute the density of the He atom in (assuming that it is a sphere).
A water droplet of radius 0.020 mm remains stationary in the air. If the downward-directed electric field of the Earth is 150 N/C, how many excess electron charges must the water droplet have? Express your answer using two significant figures.
1. what will you do with the two disks to show that angular momentum is conserved?2. how will you determine the torque
A proton accelerates from rest in a uniform electric field of 690 N/C. At one later moment, its speed is 1.30 Mm/s, What is its kinetic energy at the end of this interval
An object of mass 2 kg and charge 40 microC is moving with initial speed of 5 m/s towards a fixed point charge of 30 microC which is fixed. Find the position of the object when it comes to rest
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