Physics, 06.05.2020 03:06 anthonymcnulty6471
Phoebe's insulated foam cup is filled with 0.15 kg of coffee (mostly water) that is too hot to drink, so she adds
0.01 kg of milk at 5°C. If the coffee has an initial temperature of 70°C and the specific heat of milk is 3800
J/kg°C, how hot is the coffee after the milk is added? Assume that no heat leaks out through the cup. (Round to
one decimal place if necessary.) THE SPECIFIC HEAT OF WATER IS 4186 J/kg.
Answers: 3
Physics, 22.06.2019 11:50, kaylallangari2145
Amoving electron has kinetic energy k1. after a net amount of work w has been done on it, the electron is moving one-quarter as fast in the opposite direction. (a) find w in terms of k1. (b) does your answer depend on the final direction of the electron's motion?
Answers: 2
Physics, 22.06.2019 12:50, starr3971
Air is contained in a variable-load piston-cylinder device equipped with a paddle wheel. initially, air is at 400 kpa and 17°c. the paddle wheel is now turned by an external electric motor until 75 kj/kg of work has been transferred to air. during this process, heat is transferred to maintain a constant air temperature while allowing the gas volume to triple. calculate the required amount of heat transfer in kj/kg.
Answers: 2
Physics, 22.06.2019 16:00, ggdvj9gggsc
Suppose a soccer ball is kicked from the ground at an angle 20.0º above the horizontal at 8.00 m/s. the y-velocity is determined to be 2.74 m/s. how long will the ball be in the air? assume the ball lands at the same height at which it was kicked.
Answers: 2
Phoebe's insulated foam cup is filled with 0.15 kg of coffee (mostly water) that is too hot to drink...