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What will be the equilibrium temperature when a 269 g block of copper at 300°C is placed in a 136 g aluminum calorimeter cup containing 814 g of water at 12.3°C?
An RC circuit in an electronic timer is arranged therefore that a switch is activated when the potential difference across the capacitor falls to 50% of its initial value. The capacitance is 0.15 F.
An astronaut on earth can throw a ball straight up to a height of 13m. How high can he throw the ball on Mars
a concave mirror has a focal length of 34.1 cm. the distance between an object and its image is 52.8 cm. find a the
The resistance of the primary and secondary coils of a transformer are 56 and 14Ω, respectively. Both coils are made from lengths of the same copper wire. The circular turns of each coil have the same diameter. Discover the turn’s ratio Ns/Np
What's the quickest way to approach this problem? A car is traveling at 80 km/h along the highway. A second car is located 1 km behind, but traveling at 100 km/h. How long does it take for the second car to pass the first?
An object with a mass m have a velocity of v = 0.9c. What is the ratio of the relativistic kinetic energy relativistic and classical kinetic energy?
The average velocity of blood flow in the aorta in a resting person is 20 cm/s. The radius of the aorta is 1.2 centimeter. Determine the blood flow velocity in the capillaries
A commercial airliner is undergoing its initial ascent while the pilot maintains a cabin environment of T = 23 C, r = 0.35, and p = 880 hPa. At the 670 hPa level an exit door ruptures and cabin pressure rapidly decompresses. Will clouds form in the c..
Sand dunes on a desert island move as sand is swept up the windward side to settle in the leeward side, Calculate the average speed in each case in m/s
A blacksmith heats a 1.9 kg iron horseshoe to 480 degree C, then plunges it into a bucket containing 10kg of water at 20 degree C. The specific heat of iron is 447 J/kgK. What is the final temperature.
A 300 kg dragster accelerates from rest to a final speed of 110 m/s in 400 m (about a quarter of a mile), What is its average power output in watts and horsepower
the cable on an elevator of mass m snaps and two safety mechanisms come into play. emergency brakes apply a constant
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