Newtons law of cooling states that if an object with temperature t(t) at time t is in a medium with temperature tm the rate of change of t at time t is proportional to t(t) − tm, thus t satisfies a differential equation of the form t 0 = −k(t − tm) here k > 0, since the temperature of the object must decrease if t > tm, or increase if t < tm. well call k the temperature decay constant of the medium. (a) a thermometer is moved from a room where the temperature is 70f to a freezer where the tem- perature is 12f . after 30 seconds the thermometer reads 40f. what does it read after 2 minutes? (b) an object is placed in a room where the temperature is 20c. the temperature of the object drops by 5c in 4 minutes and by 7c in 8 minutes. what was the temperature of the object when it was initially placed in the room?
Answers: 2
Physics, 22.06.2019 00:00
What type of nuclear decay causes the atomic number of an element to increase by 1?
Answers: 1
Physics, 22.06.2019 09:30
Asap i'm in class rn a 1,000-kg car is traveling 20 m/s on a flat stretch of road. it gets to a hill and coasts uphill until it stops. how high up the hill does the car travel? givens: equation: 1/2mv2initial=mghfinal solve for h. plug & chug, label.
Answers: 2
Physics, 22.06.2019 10:30
In science and physics what is the standard unit of measure for speed?
Answers: 1
Physics, 22.06.2019 15:50
Select all the correct answers. which changes will increase the rate of reaction during combustion? decreasing the area of contact between the reactants adding more oxygen to the reaction removing heat from the reaction changing the reactants from solid form to powdered form lowering the exposure of the reactants to air
Answers: 3
Newtons law of cooling states that if an object with temperature t(t) at time t is in a medium with...
French, 04.03.2021 22:40
Mathematics, 04.03.2021 22:40
English, 04.03.2021 22:40
Mathematics, 04.03.2021 22:40
Mathematics, 04.03.2021 22:40
Geography, 04.03.2021 22:40
Health, 04.03.2021 22:40
Biology, 04.03.2021 22:40
History, 04.03.2021 22:40
Mathematics, 04.03.2021 22:40
Mathematics, 04.03.2021 22:40
Mathematics, 04.03.2021 22:40