subject
Physics, 05.09.2019 17:30 ummsumaiyah3583

An empty office chair is at rest on a floor. consider the following forces: 1. a downward force of gravity. 2. an upward force exerted by the floor. 3. a net downward force exerted by the air. which of the forces is (are) acting on the office chair?

ansver
Answers: 2

Another question on Physics

question
Physics, 21.06.2019 16:30
A12-kg bag of groceries is tossed onto a table at 4.0 m/s and slides to a stop in 2.2 s . modify the equation fδt=δ (mv) to find the force of friction.
Answers: 2
question
Physics, 22.06.2019 17:00
In the future, people will only enjoy one sport: electrodisc. in this sport, you gain points when you cause metallic discs hovering on a field to exchange charge. you are an electrodisc player playing the popular four disc variant. the disks have charges of qa = −8.0 µc, qb = −2.0 µc, qc = +5.0 µc, and qd = +12.0 µc. (1) you bring two disks together and then separate them. you measure the resulting charge of these two disks and find that it is +5.0 µc per disk. which two disks did you bring together? (a) a and b (b) a and c (c)a and d (d)b and c(e) b and d (f) c and d. (2) you bring three disks together and then separate them. you measure the resulting charge of these three disks and find that it is +3.0 µc per disk. which three disks did you bring together? a, b, and c (a) a, b, and d (c) a, c, and d (d) b, c, and d. (3) given the resulting charge of each disk measured in (b) is +3.0 µc, how many electrons would you need to add to a disk of this charge to electrically neutralize it? electrons
Answers: 3
question
Physics, 22.06.2019 19:30
Amass m = 74 kg slides on a frictionless track that has a drop, followed by a loop-the-loop with radius r = 18.4 m and finally a flat straight section at the same height as the center of the loop (18.4 m off the ground). since the mass would not make it around the loop if released from the height of the top of the loop (do you know why? ) it must be released above the top of the loop-the-loop height. (assume the mass never leaves the smooth track at any point on its path.) 1. what is the minimum speed the block must have at the top of the loop to make it around the loop-the-loop without leaving the track? 2. what height above the ground must the mass begin to make it around the loop-the-loop? 3. if the mass has just enough speed to make it around the loop without leaving the track, what will its speed be at the bottom of the loop? 4. if the mass has just enough speed to make it around the loop without leaving the track, what is its speed at the final flat level (18.4 m off the ground)? 5. now a spring with spring constant k = 15600 n/m is used on the final flat surface to stop the mass. how far does the spring compress?
Answers: 3
question
Physics, 22.06.2019 20:20
Area around a charged object where the objects can exert a force on another charged objects is an electric
Answers: 2
You know the right answer?
An empty office chair is at rest on a floor. consider the following forces: 1. a downward force of...
Questions
question
Mathematics, 18.01.2021 14:00
question
SAT, 18.01.2021 14:00
question
Advanced Placement (AP), 18.01.2021 14:00
question
Mathematics, 18.01.2021 14:00
question
Mathematics, 18.01.2021 14:00
Questions on the website: 13722360