subject
Physics, 07.07.2019 23:50 vavzincak

1. which of these is necessary for a reasonable order-of-magnitude estimate of the speed of a falling object? a. round all numbers to the nearest whole number. b. have a correct and exact value for the distance of the fall. c. use numbers for the time and distance of the fall that are reasonable even if inexact. d. assume that any falling object takes about a second to reach the ground

ansver
Answers: 2

Another question on Physics

question
Physics, 21.06.2019 17:10
Aprojectile is launched horizontally 10m above the ground and with an initial velocity of 15 m/s. a) sketch the trajectory using an appropriate coordination system. b) how long for the projectile to reach the ground. c) how far did projectile travel horizontally before striking the ground. d) determine the projectilex & y position at t-1.3s e) determine the magnitude and direction of projectile velocity at t= 1.3s f) determine the magnitude and direction of projectile acceleration at t-1.3s
Answers: 1
question
Physics, 21.06.2019 20:00
Which sentences describe disadvantages of burning fossil fuels instead of using hydrogen fuel cells? burning fossil fuels contributes to climate change. burning fossil fuels takes place inside expensive fuel cells. fossil fuels aren't widely available, but pure hydrogen is. fossil fuels are nonrenewable.
Answers: 1
question
Physics, 22.06.2019 04:10
An initially unpolarized light if intensity 500 w/m^2 passes through four polarizers. the transmission axis between adjacent polarizers is 45∘. what percentage of the initial intensity is transmitted by the system?
Answers: 2
question
Physics, 22.06.2019 13:40
Consider a double atwood machine constructed as follows: a mass 4m is suspended from a string that passes over a massless pulley on frictionless bearings. the other end of this string supports a second similar pulley, over which passes a second string supporting a mass of 3m at one end and m at the other. using two suitable generalized coordinates, set up the lagrangian and use the lagrange equations to find the acceleration of the mass 4m when the system is released. explain why the top pulley rotates even though it carries equal weights on each side.
Answers: 2
You know the right answer?
1. which of these is necessary for a reasonable order-of-magnitude estimate of the speed of a fallin...
Questions
question
Mathematics, 05.11.2020 02:50
question
Biology, 05.11.2020 02:50
question
Mathematics, 05.11.2020 02:50