Achild moving at constant velocity carries a 2 n ice cream cone 1 m across a level surface. is she doing work? a. yes, because the force acts perpendicular to the direction of motion c. yes, because the force acts in the same direction as the motion b. no, because the force acts perpendicular to the direction of motion d. no, because the force acts in the same direction as the motion
Answers: 1
Physics, 22.06.2019 14:00
Una carga puntual de 3 x 10-6 c se coloca a 12 cm de una segunda carga puntual de - 1,5 x 10-6 c. calcular la magnitud fuerza eléctrica entre las cargas
Answers: 2
Physics, 23.06.2019 07:00
Conventional hot-water heaters consist of a tank of water maintained at a fixed temperature. the hot water is to be used when needed. the drawback is that energy is wasted because the tank loses heat when it is not in use, and you can run out of hot water if you use too much. some utility companies are encouraging the use of on-demand water heaters (also known as flash heaters), which consist of heating units to heat the water as you use it. no water tank is involved, so no heat is wasted. a typical household shower flow rate is 2.50 gal/min (9.46 l/min ) with the tap water being heated from 51.0 ˚f (10.6 ˚c) to 120 ˚f (48.9 ˚c) by the on-demand heater.what rate of heat input (either electrical of from gas) is required to operate such a unit, assuming that all the heat goes into the water?
Answers: 3
Physics, 23.06.2019 08:30
Industrial processes often require the damping of vibrations. consider a workbench that uses four large ideal springs in place of traditional legs, with each spring supporting one corner of the workbench and exhibiting a force constant of 47500 n/m. this workbench is used when creating products that involve highly unstable chemicals. according to specifications, the acceleration of the manufacturing equipment must be held to less than 22.3 m/s2 for the manufacturing process to proceed safely. the amplitude of vibrations are expected to remain under 0.622 mm throughout. given that the workbench and maufacturing equipment combine to 6.05 kg, find the maximum acceleration expected of the equipment and workbench. (ignore the mass of the springs.)
Answers: 2
Achild moving at constant velocity carries a 2 n ice cream cone 1 m across a level surface. is she d...
Physics, 05.05.2020 22:37
Mathematics, 05.05.2020 22:37
Computers and Technology, 05.05.2020 22:37
Mathematics, 05.05.2020 22:37
Mathematics, 05.05.2020 22:37
Mathematics, 05.05.2020 22:37
Mathematics, 05.05.2020 22:37
Mathematics, 05.05.2020 22:37