1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
svetoff [14.1K]
3 years ago
7

The acceleration of a particle traveling along a straight line isa=14s1/2m/s2, wheresis in meters. Ifv= 0,s= 1 m whent= 0, deter

mine the particle’svelocity ats= 2 m.
Physics
1 answer:
Yuliya22 [10]3 years ago
3 0

Answer:

0.78m/s

Explanation:

We are given that

Acceleration=a=\frac{1}{4}s^{\frac{1}{2}}m/s^2

v=0, s=1 when t=0

We have to find the particle's velocity at s=2m

We know that

a=\frac{dv}{dt}=\frac{dv}{ds}\times \frac{ds}{dt}=\frac{dv}{ds}v

vdv=ads

\int_{0}^{v} vdv=\int_{1}^{s}0.25s^{\frac{1}{2}}ds

\frac{v^2}{2}=0.25\times \frac{2}{3}(s^{\frac{3}{2})^{s}_{1}

By using formula:\int x^ndx=\frac{x^{n+1}}{n+1}+C

\frac{v^2}{2}=0.25\times \frac{2}{3}(s^{\frac{3}{2}}-1

Substitute s=2

\frac{v^2}{2}=\frac{0.50}{3}((2^{1.5})-1)

\frac{v^2}{2}=\frac{0.50}{3}\times 1.83

v^2=2\times 0.305=0.61

v=\sqrt{0.61}=0.78m/s

Hence, the velocity of particle at s=2m=0.78m/s

You might be interested in
To change from one SI prefix to another, we use?
MrMuchimi

conversion factors is the answer!

4 0
3 years ago
Read 2 more answers
A parallel-plate capacitor with plates of area 540 cm2 is charged to a potential difference V and is then disconnected from the
notsponge [240]

Answer: 0.8 nC

Explanation: In order to explain this problem we have top use the expression for the capacitor of parallel plates, which is given by:

C=εo*A/d where A and d are the area and the separation of the plates.

Then we have

V=Q/C so ΔV= Q* Δd/(εo*A)

Q= 100* 0.054*8.85*10^-12/( 0.06)=0.8 nC

5 0
3 years ago
The gage pressure of an automobile tire is measured to be 210kPa before a trip and 220kPa after the trip at a location where the
Katarina [22]

Answer:

T_{f} = 312.348\,K\,(39.198\,K)

Explanation:

Let assume that gas inside the automobile tire behaves as an ideal gas. Due to the absence of leakages, the number of moles remains constant during the trip. Air temperature can be found by using the following relation:

\frac{P_{o}}{T_{o}}=\frac{P_{f}}{T_{f}}

Final temperature is cleared with the expression:

T_{f} = \frac{P_{f}}{P_{o}}\cdot T_{o}

T_{f} = \frac{220\,kPa}{210\,kPa}\cdot (298.15\,K)

T_{f} = 312.348\,K\,(39.198\,K)

7 0
3 years ago
RUE or FALSE: Red hair and freckles is a helpful (good) mutation.
nignag [31]
True!!!!!!!!!!!!!!!!!!!!!
7 0
2 years ago
50 POINTS
strojnjashka [21]

Answer:   A    Answers. Assuming that the terminal velocity doesn't change during the fall, then the kinetic energy would remain constant. However the terminal velocity decreases during the fall since the air becomes denser at lower altitudes.

Explanation:

What happens to the KE of an object when it slows down and heats up? - Quora. The kinetic energy goes down and the loss of the kinetic energy is through the production of heat energy. In real world this is due to friction, or an opposing force that decelerates the object, or a combination of both.

8 0
3 years ago
Read 2 more answers
Other questions:
  • Can an object be in equilibrium if it is in motion?
    11·1 answer
  • An ideal measuring device is one that does not alter the very measurement it is meant to take. Therefore, in comparison with the
    14·1 answer
  • Any winds, like the jet stream, occur because of _____.
    7·2 answers
  • When the distance between an object and a flat mirror is 5 m, the distance between the image and the mirror is a. 5 m.
    12·1 answer
  • "A window washer pulls herself upward using the bucket-pulley apparatus. The mass of the person plus the bucket is 65 kg.
    7·2 answers
  • Compare and contrast mechanical<br> solidarity and organic solidarity.
    5·1 answer
  • A 17Kg sitting on a shelf has a potential energy of 350J. How high is the shelf? Round your number to the nearest whole number
    8·1 answer
  • Ram covers distance of zoom in 50 seconds what is his speed​
    7·1 answer
  • If the speedometer of a car reads 5 mph, does it mean it is going at a constant speed?
    15·1 answer
  • Block X and Y are attached to each other by a light rope and can slide along a horizontal
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!