subject
Physics, 25.12.2019 16:31 DisneyGirl11

An object is moving east, and its velocity changes from 65 m/s to 25 m/s in 10 seconds. which describes the acceleration?

4 m/s2 in negative acceleration

4 m/s2 in positive acceleration

9 m/s2 in positive acceleration

9 m/s2 in negative acceleration

ansver
Answers: 2

Other questions on the subject: Physics

image
Physics, 21.06.2019 22:40, cookies1164
Ablock of mass m = 2.5 kg is attached to a spring with spring constant k = 710 n/m. it is initially at rest on an inclined plane that is at an angle of θ = 23° with respect to the horizontal, and the coefficient of kinetic friction between the block and the plane is μk = 0.19. in the initial position, where the spring is compressed by a distance of d = 0.16 m, the mass is at its lowest position and the spring is compressed the maximum amount. take the initial gravitational energy of the block as zero. a) what is the block's initial mechanical energy? b) if the spring pushes the block up the incline, what distance, l, in meters will the block travel before coming to rest? the spring remains attached to both the block and the fixed wall throughout its motion.
Answers: 3
image
Physics, 22.06.2019 11:40, johanperezpere51
Imagine that you have two balloons (or, better yet, actually inflate two balloons, if possible). create static electricity around one of the balloons by rubbing it against your hair or your sweater and then bring that balloon close to the other balloon, which has not been charged. try this with at least one other object—and for variety in the discussion, avoid using an object already described by your classmates. then, for your initial post to the discussion, answer the following questions: what happened with the two balloons?
Answers: 3
image
Physics, 22.06.2019 18:50, rurbanok12
8.29 two streams containing pyridine and acetic acid at 25°c are mixed and fed into a heat exchanger. due to the heat-of-mixing effect, it is desired to reduce the temperature after mixing to 25°c using a stream of chilled ethylene glycol as indicated in the diagram. calculate the mass flow rate of ethylene glycol needed. the heat capacity of ethylene glycol at these conditions is approximately 2.8 kj/(kg k), and the enthalpy change of mixing (δmixh) is given below.
Answers: 3
image
Physics, 22.06.2019 21:00, SmokeyRN
Ascientist wants to test ways to reduce pollution in lake . what is the bestway of doing this
Answers: 2
You know the right answer?
An object is moving east, and its velocity changes from 65 m/s to 25 m/s in 10 seconds. which descri...

Questions in other subjects:

Konu
Mathematics, 22.02.2021 19:30