An atomic nucleus at rest at the origin of an xy coordinate system transforms into three particles. Particle 1, mass 1.67 x 10^-26 kg, moves away from the origin at velocity (6.00 x 10^6 m/s)ihat ; particle 2, mass 8.35 X 10^-27 kg, moves away at velocity (-8.00 x 10^6 m/s)jhat.
(a) In unit-vector notation, what is the linear momentum of the third particle, mass 1.17 x 10^-26 kg?
kg · m/s ihat+ kg · m/s jhat

(b) How much kinetic energy appears in this transformation?
J

Can somebody explain to me how newton's 3rd law relates to momentum? ~ap physics 1

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?

M1 = 2.8 kg, m2 = 6.72 kg, m3 = 11.2 kg, byas in .is ,is .toof m3 it 0.91 m. (in m/s)