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]
2 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]2 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
White blood cells are most closely associated with which two body’s systems
Vlad1618 [11]

Answer:

Explanation:

circulatory and digestive. ... An immune response is primarily due to the body's white blood cells recognizing.

8 0
2 years ago
Apply the general results obtained in the full analysis of motion under the influence of a constant force in Section 2.5 to answ
zvonat [6]

Answer:

y(i) = h

v(y.i) = 0

Explanation:

See attachment for elaboration

3 0
3 years ago
The bulk modulus of water is 2.2 x 109 Pa, and its density is 1.0 x 103 kg/m3. What is the speed of sound in water?
yarga [219]

hi guys! Lets be friends!

7 0
2 years ago
Which of these is an example of a mechanical wave? sunlight light from a flashlight microwaves used to heat food police siren
harina [27]
Police siren is the correct answer. Hope this helps.
6 0
3 years ago
Read 2 more answers
What is the radius of a tightly wound solenoid of circular cross-section that has 180turns if a change in its internal magnetic
Nata [24]

Answer:

Radius of cross section, r = 0.24 m

Explanation:

It is given that,

Number of turns, N = 180

Change in magnetic field, \dfrac{dB}{dt}=3\ T/s

Current, I = 6 A

Resistance of the solenoid, R = 17 ohms

We need to find the radius of the solenoid (r). We know that emf is given by :

E=N\dfrac{d\phi}{dt}

E=N\dfrac{d(BA)}{dt}

Since, E = IR

IR=NA\dfrac{dB}{dt}

A=\dfrac{IR}{N.\dfrac{dB}{dt}}

A=\dfrac{6\ A\times 17\ \Omega}{180\times 3\ T/s}

A=0.188\ m^2

or

A=0.19\ m^2

Area of circular cross section is, A=\pi r^2

r=\sqrt{\dfrac{A}{\pi}}

r=\sqrt{\dfrac{0.19}{\pi}}

r = 0.24 m

So, the  radius of a tightly wound solenoid of circular cross-section is 0.24 meters. Hence, this is the required solution.

5 0
3 years ago
Other questions:
  • How does one get 8.0 A? The answer is D
    15·1 answer
  • Which of the following describes the efficiency of real machines?
    13·2 answers
  • The _____ law of thermodynamics states that energy can't be created or destroyed. Two natural sources of energy on Earth are the
    6·2 answers
  • If a gas has an absolute pressure of 319 kPa, its gage pressure is A. 419 kPa. B. 219 kPa. C. 439 kPa. D. 199 kPa.
    15·1 answer
  • Suppose the Earth's magnetic field at the equator has magnitude 0.50×10−4T and a northerly direction at all points. Part A Estim
    12·1 answer
  • What Energy transformations when climbing a hill?
    13·1 answer
  • Explain why an X-linked recessive trait is expressed more commonly in males than in females.
    15·2 answers
  • How do unicellular organisms reproduce?
    10·1 answer
  • Write the mathemetical relation between work force and displacement​
    5·1 answer
  • An object, which is at the origin at time t=0
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!