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A Styrofoam cup holding 155 g of hot water at 97°C cools to room temperature, 23.0°C. What is the change in entropy of the room? Neglect the specific heat of the cup and any change in temperature of the room.
You are to throw a ball with a speed vo ata target that is height h above the level at which yourelease the ball. You want the ball's velocity to be horizontal atthe instance it reaches the target.
A 237 kg cart runs into the rear end of a 120 kg cart that is stationary. What is the speed of the moving cart before the collision
Spacing in most book are generally done in units of points andpicas: 12 points = 1 pica, and 6 picas = 1 inch. If a figure wasmisplaced in the page proofs by 1.30 cm, what was the misplacement in both picas and points?
Race car teams will spend exorbitant money to gain even the slightest edge on their competition. calculate its percent change in moment of inertia
A rocket with mass M is fired vertically upward. At the instant it reaches an altitude of 800m and a speed of v=350 m/s, it explodes into 3 fragments. one fragment with mass 1/2M moves upward with a speed of v1=400m/s following the explosion. The sec..
q1. a small charge -8.3210-6 c object is tied by a 4.98 cm long piece of thread to the center of a uniformly charged
For gas storage, thick metal cylinders whith an internal volume of 25 litres are used; typical cylinders can safely maintain a pressure of 180 atm. how many moles of gas can such a cylinder hold
Positive point-charges of +36.0 mC (Micro C) are fixed at two of the vertices of an equilateral triangle with sides of 3.30 m, located in vacuum. Determine the magnitude of the E-field at the third vertex
A block of mass m slides at velocity vo across ahorizontal frictionless surface toward a large curved movable rampof mass 3m as shown in Figure 1. The ramp, initially at rest, alsocan move without friction and has a smooth circular frictionless fa..
The rope wrapped around the outer diameter of the disk is pulled at a constant speed of 1.06 m/s. find how fast does the hanging mass rise
A 0.527-kg mass is attached to a horizontal spring with k = 108 N/m. The mass slides across a frictionless surface. Find the mechanical energy of the system.
A pendulum clock has an aluminum pendulum exactly 1.0m long when the clock is calibrated perfectly. The temperature increases by 9?C. By how much is it off at the end of one day
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