Physics, 18.10.2019 23:10 joelpimentel
You are holding your physics book against the wall by pressing on it as shown in the figure at the right. (a) you are pressing hard enough so that the book doesn’t move. draw a free-body diagram for the book, being sure to identify all the forces that might be acting on the book. for each force the kind of force, what object is causing it, and what object is feeling it (b) what relations are there among the forces in your diagram? that is, which forces or sums of forces have to be equal? how do you know? (c) you begin to get tired and the book begins to slide down. the book begins to slide down, and you respond so it slides down at a constant velocity. how do each of the forces you have identified change from their magnitudes in part (a)? explain how you know. (d) if the book has a mass of 2 kg, the coefficient of friction between the sliding book and the wall is 0.4, how hard do you have to press on the book if it is sliding down with a speed of 2 cm/s?
Answers: 3
Physics, 22.06.2019 06:00, nicollexo21
Using a pedometer, you walk 3000 steps in 20 minutes, so your speed is 150 steps/min. each of your steps is 0.7 m long. what is your speed? 150 steps/min=/s=/h
Answers: 1
Physics, 22.06.2019 12:50, shollydot1379
Assume you measured the mass of the cart to be (500 ± 1) g and the mass of the additional mass you put on the cart to be (500 ± 1) g as well. since the scale you are using in the lab cannot measure objects heavier than 600g you will have to sum up individual pieces and propagate the error. so what would be the mass and the standard error of the cart and the mass
Answers: 3
Physics, 22.06.2019 14:30, ayoismeisalex
Two carts, one of mass 2m and one of mass m, approach each other with the same speed, v. when the carts collide, they hook together. assume that positive momentum is to the right. which graph best represents the momentum of both carts over time, before and after the collision?
Answers: 3
Physics, 22.06.2019 16:30, Unicorn66y
Acoil suspended freely, points in some direction when no current is passed through it . can you tell what will happen when a current is passed though it?
Answers: 3
You are holding your physics book against the wall by pressing on it as shown in the figure at the r...
Mathematics, 01.09.2019 15:00
Social Studies, 01.09.2019 15:00
Chemistry, 01.09.2019 15:00
Health, 01.09.2019 15:00
Health, 01.09.2019 15:00
Mathematics, 01.09.2019 15:00
Health, 01.09.2019 15:00