Physics, 24.12.2019 04:31 gautemalaismylife
Aboy is whirling a stone around his head by means of a string. the string makes one complete revolution every second, and the tension in the string is directed horizontally. the boy then speeds up the stone, keeping the radius of the circle constant, so that the string makes two complete revolutions every second. what happens to the tension in the sting? the tension reduces to one-fourth of its original value. the tension is unchanged. the tension reduces to half of its original value. the tension increases to four times its original value. the tension increases to twice its original value.
Answers: 1
Physics, 21.06.2019 19:30
Note: the following questions are unrelated to the balmer series or the martian. refer to your course notes. a sun-sized star will spend most of its lifetime as a: white dwarf b. red giant c. protostar d. main-sequence star
Answers: 2
Physics, 22.06.2019 19:30
Refrigerant-134a flows through a carnot heat pump cycle at 0.5 kg/s. it is known that the maximum absolute temperature in the cycle is 1.1 times the minimum absolute temperature, and the net power input to the cycle is 2.5 kw. if the refrigerant changes from a saturated vapor to a saturated liquid during the heat rejection process, determine the maximum magnitude of the enthalpy of vaporization for this process in kj/kg (with 3 significant figures).
Answers: 3
Physics, 22.06.2019 22:00
Which statement best explains why the overall charge on an atom is zero?
Answers: 1
Physics, 22.06.2019 22:30
Asailboat is traveling to the right when a gust of wind causes the boat to accelerate leftward at 2.5m/s2 for 4s. after the wind stops, the sailboat is traveling to the left with a velocity of 3.0m/s.assuming the acceleration from the wind is constant, what was the initial velocity of the sailboat before the gust of wind? answer using a coordinate system where rightward is positive.
Answers: 1
Aboy is whirling a stone around his head by means of a string. the string makes one complete revolut...
Mathematics, 01.09.2019 10:30
Biology, 01.09.2019 10:30
History, 01.09.2019 10:30
Mathematics, 01.09.2019 10:30
Mathematics, 01.09.2019 10:30
Mathematics, 01.09.2019 10:30
Social Studies, 01.09.2019 10:30
Biology, 01.09.2019 10:30
Biology, 01.09.2019 10:30
English, 01.09.2019 10:30
Chemistry, 01.09.2019 10:30