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
andreev551 [17]
3 years ago
14

a rock is tied to the end of the string and swung in a circle with a radius of 1/2 meter. if the rock goes around once in 1/10 o

f a second what is the centripetal acceleration of the rock?
Physics
1 answer:
vaieri [72.5K]3 years ago
3 0

Answer:

1974.4328 m/s²

Explanation:

r = Radius = 0.5 m

t = Time taken = 0.1 second

Rotational speed

v=\dfrac{2\pi r}{t}\\\Rightarrow v=\dfrac{2\pi 0.5}{0.1}\\\Rightarrow v=31.42\ m/s

The centripetal acceleration is given by

a_c=\dfrac{v^2}{r}\\\Rightarrow a_c=\dfrac{31.42^2}{0.5}\\\Rightarrow a_c=1974.4328\ m/s^2

The centripetal acceleration of the rock is 1974.4328 m/s²

You might be interested in
Water can fall as precipitation, which may include rain, snow, or hail is an observation or inference?
lukranit [14]

THe best answer would be observation because you can see that all 3 are made up of water which you don't need to infer because you have the proof when you look at all 3 different types of precipitation.

I hope this helps you out.

7 0
3 years ago
Which of the following compounds has a soapy feel?<br> co3<br> koh<br> nacl<br> hcooh
xeze [42]

Answer:

koh

Explanation:

it is a basic substance that reacts with the lipids on your fingers, as soon as you touch it, to form soap

4 0
3 years ago
Car's mass is 950kg. It's driven at 100km/h. How big is the kinetic energy?
polet [3.4K]

Answer:

4750000 J

Explanation:

Kinetic Energy= 1/2* mass* velocity²

1/2*950*100²=4750000

8 0
3 years ago
Which diagram best shows the perceived sound wave heard by a woman after a police car has passed her?
zloy xaker [14]

Answer:

A on Edg 2021

Explanation:

Just took the test

5 0
3 years ago
I need help with 2 questions . Please help c:
dezoksy [38]
A) According to the nebular theory, the Solar System formed from a huge gaseous nebula which at a certain point was perturbated. Atoms and molecules started colliding, forming planetesimals (a sort of big rocks). The planetesimals were attracted to each other by gravity, forming bigger warm almost spherical objects called protoplanets, which at the end cooled down forming planets.
Therefore the correct answer is "all of the above".

b) The planets closer to the Sun were (and still are) subject to higher temperatures, due to their close distance to the Sun. In these conditions, rocky materials undergo condensation, while iced gaseous materials undergo vaporization. In the outer parts of the Solar System temperatures are too low to allow these transformations.
The correct answer is again "all of the above".
8 0
3 years ago
Other questions:
  • Which amount of power is the smallest?
    10·2 answers
  • Which of these most closely describes the shape of a ellipse
    10·1 answer
  • What are the roles of heat, pressure, and water in the origin of magma?
    7·1 answer
  • True or False:
    15·1 answer
  • How many times does the iss orbit the earth in 24 hours
    5·2 answers
  • Any four difference between speed and acceleration ​
    5·1 answer
  • What happens when parallel rays of light hit a smooth mirror surface
    13·1 answer
  • A sharp image is formed when light reflects from a
    14·2 answers
  • What motion makes the acceleration unchanged?
    15·2 answers
  • Hai nguồn sóng A, B cùng pha, củng biên độ. củng tần số 40(Hz) gây ra hiện tương giao thoa trên mặt thoáng chất lỏng. Biết AB =1
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!