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Assume all temperatures to be exact. To determine the specific heat of a new metal alloy, 0.180 kg of the substance is heated to 440 °C and then placed in a 0.150-kg aluminum calorimeter cup containing 0.430 kg of water at 18°C If the final temperature of the mixture is 42.5°C,what is the specific heat of the alloy? (Ignore the calorimeter stirrer and thermometer.)
a rod 14.0 cm long is uniformly charged and has a total charge of 22.0 c. determine a the magnitude and b the direction
How to calculate the angle of repose from a book falling off a table?
A recent study of 280 people showed that between about 70 and 80 percent of Americans over 60 do not have enough savings to retire.
What focal length does the lens need? Assume that it is a thin lens. How far should you place the lens from the slide?
A thin film of MgF2 (n = 1.38) coats a piece of glass. Constructive interference is observed for the reflection of light with wavelengths of 500nm and 667nm .
A small statue is recovered at an archeological dig. Its mass is measured to be 386 kg and its volume is 0.02 m3. What is the mass density of the statue
A 1100 kg car carrying four 84 kg people travels over a rough "washboard" dirt road with corrugations 4.0 m apart which causes the car to bounce on its spring suspension. By how much does the car body rise on its suspension owing to this decrease i..
A charged capacitor with capacitance C is being discharged through a variable resistor that has its resistance dependent on time: R = R(t). Find this function if the current through it remains constant until the capacitor is completely discharged ..
the potential difference between the accelerating plates of a tv set is about 20 kv. if the distance between the plates
you buy a plastic dart gun and being a clever physics student you decide to do a quick calculation to find its maximum
A cube has sides of length L=0.300m. It is placed with one corner at the origin. Find the total electric charge inside the cube
An apple falls from a branch near the top of a tall tree. what is the apple's speed just before it hits the ground
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