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
aksik [14]
3 years ago
11

A race car starts from rest on a circular track of radius 310 m. Its speed increases at the constant rate of 0.6 m/s 2 . At the

point where the magnitudes of the radial and tangential accelerations are equal, determine the speed of the race car. Answer in units of m/s
Physics
1 answer:
matrenka [14]3 years ago
4 0

Answer:

The speed of the race car is 13.63 m/s.

Explanation:

It is given that,

Radius of the circular track, r = 310 m

Acceleration of the car, v = 0.6\ m/s^2

We need to find the speed of the race car. In circular motion, the object moves under the action of centripetal acceleration which is given by :

a=\dfrac{v^2}{r}

v=\sqrt{a\times r}

v=\sqrt{0.6\times 310}

v = 13.63 m/s

So, the speed of the race car is 13.63 m/s. Hence, this is the required solution.

You might be interested in
A student traveling at 8m/s on a bike has a mass of 182 KG and collides into a boulder and comes to a abrupt halt in 0.08 second
Delicious77 [7]
I hope this helps u !!

8 0
3 years ago
Two forces whose resultant is 100newton are perpendicular to each other. If one of them makes an angle of 60newton with the resu
Elis [28]

Answer:

100 N

Explanation:

Given that,

Two forces whose resultant is 100newton are perpendicular to each other.

If one of them makes an angle of 60newton with the resultant.

F_1=100\times \sin60=86.60\ N

and

F_2=100\times \cos60=50\ N

The magnitude of force,

F=\sqrt{F_1^2+F_2^2} \\\\F=\sqrt{86.6^2+50^2} \\\\F=99.99\ N

or

F = 100 N

So, the magnitude of force is 100 N.

6 0
3 years ago
What do lines on a contour map indicate
stiks02 [169]

Indicate valleys, hills, steepness and gentleness of slopes.

5 0
3 years ago
A straight fin is made from copper (k = 388 W/m-K) and is 0.5 cm in diameter and 30 cm long. The temperature at the base of the
erastovalidia [21]

Answer:

The rate of transfer of heat is 0.119 W

Solution:

As per the question:

Diameter of the fin, D = 0.5 cm = 0.005 m

Length of the fin, l =30 cm = 0.3 m

Base temperature, T_{b} = 75^{\circ}C

Air temperature, T_{infty} = 20^{\circ}

k = 388 W/mK

h = 20\ W/m^{2}K

Now,

Perimeter of the fin, p = \pi D = 0.005\pi \ m

Cross-sectional area of the fin, A = \frac{\pi}{4}D^{2}

A = \frac{\pi}{4}(0.5\times 10^{-2})^{2} = 6.25\times 10^{- 6}\pi \ m^{2}

To calculate the heat transfer rate:

Q_{f} = \sqrt{hkpA}tanh(ml)(T_{b} - T_{infty})

where

m = \sqrt{\frac{hp}{kA}} = \sqrt{\frac{20\times 0.005\pi}{388\times 6.25\times 10^{- 6}\pi}} = 41.237

Now,

Q_{f} = \sqrt{20\times 388\times 0.005\pi\times 6.25\times 10^{- 6}\pi}tanh(41.237\times 0.3)(75 - 20) = 0.119\ W

5 0
3 years ago
Which two elements will most likely form an ionic bond? (Click on the periodic table icon to view these elements) krypton and li
netineya [11]

Answer:

Magnesium and Bromine

Explanation:

I just took the test, and Magnesium has 7 electrons and Bromine has 2 valance electrons making the transfer a lot easier. In the first choice, Krypton already has 8 valance electrons therefore it cannot transfer or accept any more which rules it out as a possible answer. Calcium has 2 valance electrons and Potassium has 1 meaning it couldn't make a full shell of 8 and cannot make a ionic bond. Iodine has 7 electrons as well as Chlorine which wouldn't be the answer because it would have more than 8 valance electrons.

4 0
3 years ago
Read 2 more answers
Other questions:
  • What is the kinetic energy of a 1.0-kg billiard ball that moves at 5.0 m/s?
    8·1 answer
  • Stiind ca de la cea mai apropriata stea din afara Sistemului noatru Solar lumina ar ajunge in 4,3ani in ce unitati de masura con
    9·1 answer
  • How do you calculate energie
    6·2 answers
  • Newton's Principle states that the buoyant force on an object is equal to weight of the fluid displaced by the object.
    5·1 answer
  • Late on an autumn day, the relative humidity is 44.0% and the temperature is 20.0°C. What will the relative humidity be that ev
    6·1 answer
  • An object that does not allow light to pass through it is
    5·2 answers
  • Ehren is trying to increase his mile run from eight to six minutes. He has decided to run some sandy hills near his home. Which
    9·1 answer
  • 2.If you increase the release helght, you are increasing the what
    5·1 answer
  • Find the momentum of a body of mass 5kg moving with velocity of 4.5m/s<br><br>​
    10·1 answer
  • When the resistance of a circuit is doubled, and no other changes occur, what effect does this have on this current in the circu
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!