subject
Physics, 15.11.2019 23:31 BIKRAMlawati5544

A500.0-g chunk of an unknown metal, which has been in boiling water for several minutes, is quickly dropped into an insulating styrofoam beaker containing 1.00 kg of water at room temperature (20.0∘c). after waiting and gently stirring for 5.00 minutes, you observe that the water’s temperature has reached a constant value of 20.0∘c.
(a) assuming that the styrofoam absorbs a negligibly small amount of heat and that no heat was lost to the surroundings, what is the specific heat of the metal?
(b) which is more useful for storing thermal energy: this metal or an equal weight of water? explain.
(c) if the heat absorbed by the styrofoam actually is not negligible, how would the specific heat you calculated in part (a) be in error? would it be too large, too small, or still correct? explain.

ansver
Answers: 1

Other questions on the subject: Physics

image
Physics, 22.06.2019 06:00, azaz1819
The magnetic field inside a superconducting solenoid is 4.50 t. the solenoid has an inner diameter of 6.20 cm and a length of 26.0 cm. determine (a) the magnetic energy density in the field and (b) the energy stored in the magnetic field within the solenoid.
Answers: 2
image
Physics, 22.06.2019 21:40, iancuteodora30
Ahair dryer is basically a duct in which a few layers of electric resistors are placed. a small fan pulls the air in and forces it through the resistors where it is heated. air enters a 1200 w hair dryer at 100 kpa and 22°c and leaves at 47°c. the cross-sectional area of the hair dryer at the exit is 60 cm2. neglecting the power consumed by the fan and the heat losses through the walls of the hair dryer, determine (a) the volume flow rate of air at the inlet and (b) the velocity of the air at the exit.
Answers: 1
image
Physics, 22.06.2019 22:30, milkshakegrande101
Suppose that three astronomical objects, 1, 2, and 3 are observed to lie on a line, and the distance from object 1 to object 3 is d. object 1 has four times the mass of object 3, and seven times the mass of object 2. find the distance between objects 1 and 2 for which the net force on object 2 is zero.
Answers: 1
image
Physics, 22.06.2019 23:00, harlon852
In which of these cases are the two wave points considered to be in phase with each other?
Answers: 1
You know the right answer?
A500.0-g chunk of an unknown metal, which has been in boiling water for several minutes, is quickly...

Questions in other subjects: