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
Eduardwww [97]
3 years ago
12

A 50.0-kg child stands at the rim of a merry-go-round of radius 2.25 m, rotating with an angular speed of 3.30 rad/s.. What is t

he child's centripetal acceleration?
Physics
1 answer:
lara [203]3 years ago
6 0

Answer: the child's centripetal acceleration=24.50 m/s²

Explanation:

Given that mass of child= 50 kg

radius of merry go round= 2.25m

angular speed = 3.30 rad/s

 

Centripetal Acceleration  = v²/ r

  But  V= ωr

So Centripetal Acceleration  = v²/ r =  (ωr)²/ r

=(3.30)² x  (2.25)²/ 2.25 = (3.30)² x  2.25

=24.5025m/s²

=24.50 m/s²

You might be interested in
How can density be determined in a lab of a rectangular solid?
True [87]
We will first record its mass and then its volume by measuring its dimensions
then divide mass by volume and will get density of regular solid
6 0
3 years ago
As a planet's semimajor axis gets smaller, its speed will _______ and its period will _________ .
Rufina [12.5K]
Well first of all, a planet doesn't have a semimajor axis, although it's orbit does.

In an orbit with a smaller semimajor axis, the planet moves faster, and its orbital period is shorter.

That's why the International Space Station circles the Earth in less time than the Moon does.
4 0
3 years ago
The rate at which speed changes is called
pochemuha

Answer:

Acceleration

Explanation:

I think so & hope it will help yuh!

8 0
3 years ago
In a particular beam of radiation, which is traveling in a vacuum, the amounts of energy per second at an ultraviolet wavelength
Darina [25.2K]

Answer: d)

Explanation: In order to justify the answer we have to consider that the energy of photons directely depent on the frequency so the energy is inverselly dependent of the wavelegth.

If both beams have the same power, this means Energy/time so the number of photons per second must be different. As consequence a) is wrong as  b) since it is not posible since UV photon  have more energy that IR photons. c) It is no necessary know the frequency since the wavelength is related in the form:

c=λν  c is the speed of light, λ the wavelegth and ν the frequency.

d) Certainly will be more more IR photons than UV photons to get the same beam power.

8 0
3 years ago
In which scenario will the two objects have the greatest gravitational force
Brilliant_brown [7]

Answer: I think the answer C

Explanation:

7 0
3 years ago
Read 2 more answers
Other questions:
  • Looking at the periodic table which element would you think is the best conductor of electricity?
    12·1 answer
  • The _______________ contains the asthenosphere and the lower mantle.
    13·1 answer
  • In an electron dot diagram, the symbol for an element is used to represent
    12·2 answers
  • Placement.
    11·1 answer
  • Different structural forms of the same element are called
    10·1 answer
  • If an object is dropped from a height of 144 feet, the function h(t)= -16t^2+144 gives the height of the object after t seconds.
    7·1 answer
  • PLZ HELP ON #22-26!!!! <br><br>Please explain why and how you got your answer.
    13·1 answer
  • A crate resting on a rough horizontal floor is to be moved horizontally. The coefficient of static friction is 0.36. To start th
    12·1 answer
  • Why do heavier objects roll down slopes faster than lighter objects? (Assuming they are the same shape)
    8·1 answer
  • What is the relationship between resistance and current.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!