A hot-air balloon is 150 ft above the ground when a motorcycle (traveling in a straight line on a horizontal road) passes directly beneath it going 60 mi divided by hr (88 ft divided by s). if the balloon rises vertically at a rate of 8 ft divided by s, what is the rate of change of the distance between the motorcycle and the balloon 10 seconds later?
Answers: 2
Physics, 21.06.2019 17:30, joanna3895
What is the difference between electrically neutral objects and electrically charged objects
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Physics, 22.06.2019 12:30, cardsqueen
Consider a hydrogen atom in the ground state. what is the energy of its electron? =e= jj now consider an excited‑state hydrogen atom. what is the energy of the electron in the =5n=5 level? =e5= j
Answers: 3
Physics, 22.06.2019 16:40, sabrinarea041904
Which are true about beta reactions? there will be more than one answer. a. it has no change b. it doesn't change the mass of the number c. it has a mass of 0.0005 atoms d. it causes transmutation.
Answers: 3
Physics, 22.06.2019 19:30, QueenNerdy889
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
A hot-air balloon is 150 ft above the ground when a motorcycle (traveling in a straight line on a ho...
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