subject
Physics, 18.09.2019 20:20 Twitches

Imagine you've been walking outside on a cold winter's day. when you arrive home at your studio apartment, you realize that you left a window open and your 5.0m×5.0m×3.0m room is only slightly warmer than the outside. you turn on your 1.0-kw space heater right away and wait impatiently for the room to warm up. in this problem, make the following assumptions: the entire 1.0kw=1.0×103j/s output of the space heater goes into warming the air in the room. the air in the room is an ideal gas with five degrees of freedom per particle (three translational degrees of freedom and two rotational degrees of freedom—about right for nitrogen and oxygen).the air in the room is at a constant pressure of 1.00 atm. at room temperature (22 ∘c= 295 k) and atmospheric pressure, 1.00 mole of air fills a volume of 24.2 l. this is slightly larger than the volume of air at standard temperature and pressure, because room temperature is hotter than 0 ∘c. how long will it be before the heater warms the air in the room by 10 ∘c? express your answer in minutes to two significant figures.

ansver
Answers: 1

Other questions on the subject: Physics

image
Physics, 22.06.2019 09:30, ccory0626
Why are graphs useful when interpreting data
Answers: 2
image
Physics, 22.06.2019 15:00, koranbutterton
Astudent throws a water balloon with speed v0 from a height h = 1.76 m at an angle θ = 21° above the horizontal toward a target on the ground. the target is located a horizontal distance d = 9.5 m from the student’s feet. assume that the balloon moves without air resistance. use a cartesian coordinate system with the origin at the balloon's initial position. (a) what is the position vector, rtarge t, that originates from the balloon's original position and terminates at the target? put this in terms of h and d, and represent it as a vector using i and j. (b) in terms of the variables in the problem, determine the time, t, after the launch it takes the balloon to reach the target. your answer should not include h. (c) create an expression for the balloon's vertical position as a function of time, y(t), in terms of t, vo, g, and θ. (d) determine the magnitude of the balloon's initial velocity, v0, in meters per second, by eliminating t from the previous two expressions.
Answers: 3
image
Physics, 22.06.2019 15:00, bagofmud8339
When is a current produced? when the terminals of an electrochemical cell are connected by a wire if the electric circuit is opened in an electrochemical cell if the electrolyte is removed from an electrochemical cell when the electrodes are reversed in an electrochemical cell
Answers: 3
image
Physics, 22.06.2019 17:40, Tyrant4life
Which describes an object in projectile motion? check all that apply. a.gravity acts to pull the object downb. the object moves in a straight path. c.the forward velocity of the object is 0 m/s. d.the object’s inertia carries it forward. e.the path of the object is curved.
Answers: 2
You know the right answer?
Imagine you've been walking outside on a cold winter's day. when you arrive home at your studio apar...

Questions in other subjects:

Konu
Geography, 15.05.2021 09:40
Konu
Mathematics, 15.05.2021 09:50