Physics, 29.11.2019 08:31 camiilajakobsen1400
What part of rutherford's investigations demonstrated that the thomson model was not accurate?
a. they showed that atoms have an overall negative charge.
b. they showed that all particles of an atom are the same size.
c. they showed that electrons and protons make up the mass of the atom.
d. they showed that the atoms have a dense nucleus.
Answers: 3
Physics, 22.06.2019 14:20
4r-134a enters the condenser of a residential heat pump at 800 kpa and 50°c at a rate of 0.022 kg/s and leaves at 750 kpa subcooled by 3°c. the refrigerant enters the compressor at 200 kpa superheated by 4°c determine (a) the isentropic efficiency of the compressor, (b) the rate of heat supplied to the heated room, and (c) the cop of the heat pump. also, determine (d) the cop and rate of heat supplied to the heated room if this heat pump operated on the ideal vapor-compression cycle between the pressure limits of 200 and 800 kpa. (0.757, 4.37 kw, 5.12, 6.18, 3.91 kw)
Answers: 3
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Based on the image below what would an observer on the nighttime side of earth observe?
Answers: 1
Physics, 23.06.2019 09:00
Which statements best describe medical uses for radioactive isotopes? check all that apply. radioactive isotopes are used to detect medical problems. high-energy gamma rays are injected into the body. radioactive isotopes are used to treat some diseases. radiation is used to kill cancer cells. radioactive isotopes are directed at tumors from outside the body.
Answers: 1
What part of rutherford's investigations demonstrated that the thomson model was not accurate?
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