What is the kinetic energy of a 0.4 kg football being thrown at 35 m/s?
14 J
490 J
245...
Physics, 29.05.2021 01:00 ccollinsphotogr3177
What is the kinetic energy of a 0.4 kg football being thrown at 35 m/s?
14 J
490 J
245 J
137.2 J
Answers: 1
Physics, 21.06.2019 19:30, davidsteck99
A33.1 g copper object is launched from a 1.5 m 30° steel incline positioned on the floor by being pulled up a string attached to a 50.0 g mass suspended vertically over a pulley. the object is projected towards a glass table where it lands when it is at the point along its trajectory with the lowest speed. it comes to a halt when it clears the opposite edge of the table. it then falls and lands on 9 physics texts each 5 cm thick that are stacked on the floor on the opposite side of the table. assume that the table does not have a ledge and the rectangular object experiences 0.05 n of air resistance as it falls towards the books. how far and how long did the object travel and how fast does it hit the books. assume that at the moment the copper object leaves the incline, the massless string and ideal pulley break off
Answers: 2
Physics, 21.06.2019 20:00, desscraft30
Which of the following represents an upright image? a. -do b. +m c. -m d. +do
Answers: 1
Physics, 22.06.2019 01:10, caguil00
Asteam power plant operates on an ideal reheat rankine cycle between the pressure limits of 15 mpa and 10 kpa. the mass flow rate of steam through the cycle is 12 kg/s. steam enters both stages of the turbine at 500°c. if the moisture content of the steam at the exit of the low-pressure turbine is not to exceed 10 percent, determine (a) the pressure at which reheating takes place, (b) the total rate of heat input in the boiler, and (c) the thermal efficiency of the cycle. also, show the cycle on a t-s diagram with respect to the saturation lines. (2.15 mpa; 45.0 mw; 42.6%)
Answers: 3
Physics, 22.06.2019 02:10, CrownedQueen
"an open tank has the shape of a right circular cone. the tank is 6 feet across the top and 5 feet high. how much work is done in emptying the tank by pumping the water over the top edge? note: the density of water is 62.4 lbs per cubic foot."
Answers: 2
English, 26.09.2021 04:40
Mathematics, 26.09.2021 04:40
Mathematics, 26.09.2021 04:40
Mathematics, 26.09.2021 04:40
Mathematics, 26.09.2021 04:40