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
Flauer [41]
3 years ago
12

The cart travels the track again and now experiences a constant tangential acceleration from point A to point C. The speeds of t

he cart are 11.0 ft/s at point A and 18.0 ft/s at point C. The cart takes 5.00 s to go from point A to point C, and the cart takes 1.30 s to go from point B to point C. What is the cart's speed at point B
Physics
1 answer:
Tems11 [23]3 years ago
5 0

Answer:

The speed at B is 16.18 ft/s .

Explanation:

Speed at A, u = 11 ft/s

Speed at C, v' = 18 ft/s

Time from A to C = 5 s

Time from B to C = 1.3 s

Let the speed of car at B is v.

Let the acceleration is a.

From A to B

Use first equation of motion

v = u + a t

18 = 11 + a x 5

a = 1.4 ft/s^2

Let the time from A to B is t' .

t' = 5 - 1.3 = 3.7 s

Use first equation of motion from A to B

v = 11 + 1.4 x 3.7 = 16.18 ft/s  

You might be interested in
Calculate the mass of the earth if the radius of the earth is 6.38 × 10^6​
Delicious77 [7]

Answer:

C

Explanation:

C is i thing

7 0
3 years ago
A particle of unit mass moves in a potential V(x)= ax^2+b/x^2 . Where a and b are constnts. Calcuate the angular frequency of sm
Sholpan [36]

Answer:

Explanation:

Given

Potential Energy is given by

U(x)=ax^2+\frac{b}{x^2}

And Force is given by

F=-\frac{\mathrm{d} U}{\mathrm{d} x}

Particle will be at equilibrium when Potential Energy is either minimum or maximum

F=-\left ( 2ax-\frac{2b}{x^3}\right )

i.e.ax=\frac{b}{x^3}

x_0=(\frac{b}{a})^{0.25}

So angular Frequency of small oscillation is given by

\omega =\sqrt{\frac{U''(x)}{m}}

for m=1

we get    \omega =\sqrt{\frac{U''(x_0)}{1}}

U''(x_0)=2a+6a= 8a

\omega =\sqrt{8a}

4 0
3 years ago
Two blocks are connected as shown in the diagram below. Assume that the ramp is frictionless. Draw the force diagram for the blo
cluponka [151]

Answer:

diagram: see image, x-component: 84.3 N, acceleration: 4.38 m/s^2

Explanation:

(see image for further explanation)

5 0
3 years ago
Why do waves with frequencies higher than visible light hurt while those with lower frequencies do not affect us?
STALIN [3.7K]
Lower frequency waves have less strength to penetrate. How bad a wave is all depends on how well it penetrates our bodies. Visible light doesn't penetrate ur skin, but UV rays (higher than visible) can go through our skin, making it <span>bad" for us. High frequency waves have more energy and move faster</span>
7 0
3 years ago
Read 2 more answers
How do I find magnitude of acceleration?
Leno4ka [110]
Divide the change in speed by the time for the change.
6 0
3 years ago
Other questions:
  • The internal energy of a system....
    12·1 answer
  • Which of the following structure's primary role is to filter lymph?
    7·1 answer
  • Explain, in complete sentences, Issac Newton's Laws Of Motion. Explain how each law is applied in the real world​
    7·2 answers
  • 13. A lever does 5.0 J of work on a 0.10-kg ball bearing in a pinball machine. The ball's
    11·1 answer
  • Will mark brainliest!! Answer fast and correct.
    13·1 answer
  • new york, Vermont, Massachusetts are specifically what region of the united states? and what two wind directions do you combine?
    14·1 answer
  • What would be a disadvantage of asexual reproduction for an organism
    15·1 answer
  • Which of the following statements are true?
    14·2 answers
  • Differentiate between thunderstorms and cyclones ?
    14·2 answers
  • The p-type or N-type semiconductor is not of practical use. Why?​
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!