Q1 sunlight shining in during the daytime is absorbed by

Assignment Help Physics

Reference no: EM13350868

Q1. Sunlight shining in during the daytime is absorbed by the floor, interior walls, and objects in the room, raising their temperature to 37.5°C. If the house is well insulated, you may model it as losing energy by heat steadily at the rate 6 100 W on a day in July when the average exterior temperature is 4.00°C and while the conventional heating system is not used at all. Throughout the period between 5:00 p.m. and 7:00 a.m., the temperature of the house drops and a sufficiently large "thermal mass" is necessary to keep it from dropping too far. The thermal mass can be a large quantity of stone (with specific heat 850 J/kg . °C) in the floor and the interior walls exposed to sunlight. What mass of stone is necessary if the temperature is not to drop below 18.5°C overnight?

Q2. Certain stars are thought to collapse at the end of their lives, combining their protons and electrons to form a neutron star. Such a star can be thought of as a giant atomic nucleus. If a star with a mass equal to that of the sun (of mass 1.99 × 10^30 kg) were to collapse into neutrons, what would be the radius of the star?

Respond in units of m.

Reference no: EM13350868

Questions Cloud

Q1 a person eats a dessert that contains 260 calories one : q1. a person eats a dessert that contains 260 calories one. the skin temperature of this individual is 36 degree

Q1 two blocks of the same mass m joined by a spring of : q1. two blocks of the same mass m joined by a spring of negligible mass and with spring constant k are being lowered at

Q1 sunlight enters a room at an angle of 32 above the : q1. sunlight enters a room at an angle of 32 above the horizontal and reflects from a small mirror lying flat on the

Q1 fuel aboard a rocket has a density of 2770 kgm3 and is : q1. fuel aboard a rocket has a density of 2770 kgm3 and is ejected with a speed of 3270 ms. if the engine is to provide

Q1 sunlight shining in during the daytime is absorbed by : q1. sunlight shining in during the daytime is absorbed by the floor interior walls and objects in the room raising

Q1 an aging coyote cannot run fast enough to catch a : q1. an aging coyote cannot run fast enough to catch a roadrunner. he purchases on ebay a set of jet-powered roller

Q1 a certain elevator cab has a total run of 171 m and a : q1. a certain elevator cab has a total run of 171 m and a greatest speed is 4.75 msec and it accelerates from rest and

Q1 suppose that in franck-hertz experiment electron of : q1. suppose that in franck-hertz experiment electron of energy 12.5 ev is used to excite hydrogen atoms. what is the

Q1 a evaluate the temperatures of a blue star and a blue : q1. a evaluate the temperatures of a blue star and a blue jacket coat by using order of magnitude estimates for

User Account

All Pages