Physics
Physics, 07.12.2019 02:31, averyeverdeen01

Un cuerpo se mueve en línea recta segun la ecuación x=10+20t-4.9t2 (x está expresado en metros y t en segundos). ¿cuál es la longitud del camino recorrido al cabo de 3.0 segundos? porfa es para mañana

answer
Answers: 1

Other questions on the subject: Physics

image
Physics, 22.06.2019 08:00, kaylaamberd
Aheat engine running backward is called a refrigerator if its purpose is to extract heat from a cold reservoir. the same engine running backward is called a heat pump if its purpose is to exhaust warm air into the hot reservoir. heat pumps are widely used for home heating. you can think of a heat pump as a refrigerator that is cooling the already cold outdoors and, with its exhaust heat qh, warming the indoors. perhaps this seems a little silly, but consider the following. electricity can be directly used to heat a home by passing an electric current through a heating coil. this is a direct, 100% conversion of work to heat. that is, 19.0 \rm kw of electric power (generated by doing work at the rate 19.0 kj/s at the power plant) produces heat energy inside the home at a rate of 19.0 kj/s. suppose that the neighbor's home has a heat pump with a coefficient of performance of 4.00, a realistic value. note: with a refrigerator, "what you get" is heat removed. but with a heat pump, "what you get" is heat delivered. so the coefficient of performance of a heat pump is k=qh/win. an average price for electricity is about 40 mj per dollar. a furnace or heat pump will run typically 200 hours per month during the winter. what does one month's heating cost in the home with a 16.0 kw electric heater? what does one month's heating cost in the home of a neighbor who uses a heat pump to provide the same amount of heating?
Answers: 2
image
Physics, 22.06.2019 15:20, ineedhelp2285
Aphoton is absorbed by an electron that is in the n = 3 state of a hydrogen atom, causing the hydrogen atom to become ionized. very far away from the nucleus, the released electron has a velocity of 750,000 m/s. what was the wavelength of the absorbed photon?
Answers: 2
image
Physics, 22.06.2019 16:00, kalbaugh
Which composition of water moves to begin a deepwater current?
Answers: 2
image
Physics, 23.06.2019 01:00, kb0767729
Use vsepr theory to predict the molecular geometry of the molecule hcn.
Answers: 3
Do you know the correct answer?
Un cuerpo se mueve en línea recta segun la ecuación x=10+20t-4.9t2 (x está expresado en metros y t e...

Questions in other subjects:

Konu
Mathematics, 26.03.2021 07:40
Konu
Mathematics, 26.03.2021 07:40
Konu
History, 26.03.2021 07:40
Konu
History, 26.03.2021 07:40