Part one
a ladder rests against a vertical wall. there
is no friction between the wall and the ladder.
the coefficient of static friction between the
ladder and the ground is µ = 0.464 .
(use the picture to determine the answer)
identify the set of equations which is correct.
answer choices:
1. a1, b2, c3
2. a2, b2, c1
3. a1, b1, c1
4. a1, b2, c2
5. a1, b1, c2
6. a2, b1, c3
7. a2, b1, c2
8. a1, b2, c1
9. a1, b1, c3
10. a2, b1, c1
part two
determine the smallest angle θ for which the
ladder remains stationary.
answer in units of ◦
Answers: 1
Physics, 21.06.2019 15:30, andrew8228
Acurve connects the data points that are plotted. (physical science chapter 11 motion)
Answers: 1
Physics, 22.06.2019 08:30, khambay
Researchers determine that the biodiversity in a woodland region is declining. they identify two major threats to the region's biodiversity, a method to address each threat, and the expected outcome of each method. this information is shown in the table. a) reforestation would not benefit many species because most forest species live on the ground. b) reforestation would take the longest time to be effective because trees take several years to grow. c) biological augmentation would benefit only a few species because is is typically not very effective. d) biological augmentation would take less time to ve effective because it targets the majority of prey species.
Answers: 3
Physics, 22.06.2019 16:40, Crxymia
Aparticle's position is given by x = 3.00 - 9.00t + 3t2, in which x is in meters and t is in seconds. (a) what is its velocity at t = 1 s? (b) is it moving in the positive or negative direction of x just then? (c) what is its speed just then? (d) is the speed increasing or decreasing just then? (try answering the next two questions without further calculation.) (e) is there ever an instant when the velocity is zero? if so, give the time t; if not, answer "0". (f) is there a time after t = 3 s when the particle is moving in the negative direction of x? if so, give the time t; if not, answer "0".
Answers: 3
Part one
a ladder rests against a vertical wall. there
is no friction between the wall a...
a ladder rests against a vertical wall. there
is no friction between the wall a...