Physics, 29.05.2020 04:01 birdman9416
9. A force of only 150 N can lift a 600 N sack of flour to a height of 0.50 m when using a lever as shown in the diagram below. a. Find the work done on the sack of flour (in J). b. Find the distance you must push with the 150 N force on the left side (in m). c. Briefly explain the benefit of using a lever to lift a heavy object.
Answers: 1
Physics, 22.06.2019 05:00
Red light strikes a metal surface and electrons are ejected. if violet light is now used with a 10% greater intensity, what will happen to the ejection rate (number of ejected electrons per second) and the maximum energy of the electrons? a) greater ejection rate; same maximum energyb) same ejection rate; greater maximum energyc) greater ejection rate; greater maximum energyd) same ejection rate; same maximum energye) none of the above answers are correct
Answers: 1
Physics, 23.06.2019 08:40
Ascientist is working with a new kind of quantum dot to make a dye. he is applying newton’s laws to the particle, but it seems to be breaking these laws of physics. which action will most likely the scientist study the particle’s motion? a. he needs to remember that the particle is too large for quantum analysis. b. he must continue to use newtonian mechanics, but he needs to learn more about the particle. c. he needs to use quantum mechanics, not newtonian mechanics, because this is a nanotechnology product. d. he must determine new physical laws that only apply to quantum dots.
Answers: 1
Physics, 23.06.2019 12:00
Increased ozone in the lower atmosphere near the ground results primarily from
Answers: 1
Physics, 23.06.2019 20:00
An olympic runner leaps over a hurdle. the acceleration of gravity is 9.81 m/s2 . if the runner’s initial vertical speed is 2.0 m/s, how much will the runner’s center of mass be raised during the jump?
Answers: 1
9. A force of only 150 N can lift a 600 N sack of flour to a height of 0.50 m when using a lever as...
Mathematics, 08.07.2019 06:00
Mathematics, 08.07.2019 06:00
English, 08.07.2019 06:00
Mathematics, 08.07.2019 06:00
Mathematics, 08.07.2019 06:00
Chemistry, 08.07.2019 06:00