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
Rudiy27
2 years ago
12

a ball on a string is swung overhead in a horizontal circle with a radius of 0.66 m. what speed (in m/s) does the ball need to m

aintain for there to be a centripetal acceleration of 23 m/s2?
Physics
1 answer:
AnnZ [28]2 years ago
8 0

Answer:

The ball is moving in a horizontal circle.

The force acting towards the center of the circle is

F = M a = M * V^2 / R    

a = V^2 / R      simplifying equation

V = (a / R)^1/2 = (23 / .66)^1/2 = 5.90 m/s

You might be interested in
An engine performs 6400 j of work on a motorbike the motorbike and the rider have a combined mass of 200 kg if the bike started
spin [16.1K]

The work done by the engine is converted into kinetic energy of the motorbike+rider system:

W=K=\frac{1}{2}mv^2

where

W=6400 J is the work

m=200 kg is the mass of the system

v is the speed acquired by the motorbike


Rearranging the equation and substituting the numbers in, we find

v=\sqrt{\frac{2W}{m}} =\sqrt{\frac{2(6400 J)}{200 kg}} =8 m/s

4 0
3 years ago
A garbage truck has a mass of 2100 kg. It starts from rest and travels 75 meters in 15 seconds. The truck uniformly accelerates
Ivanshal [37]

Answer: F=(2100)(0.33)=693N

Explanation:

3 0
3 years ago
Mention one life application on density ​
kow [346]

One well-known application of density is determining whether or not an object will float on water. If the object's density is less than the density of water, it will float; if its density is less than that of water, it will sink.In fact, submarines dive below the surface of the water by emptying their ballast tanks

5 0
2 years ago
Um elétron é lançado entre duas placas eletrizadas como mostra a figura. Sejam v= 6x10^6 m/s, ângulo 45°, E= 2x10^3 N/C, d= 3 cm
Svetlanka [38]
B hdbdudegjegedbfdrjf
3 0
3 years ago
Could the half of the moon that faces the earth ever be completely dark in any of these diagrams
docker41 [41]
Yes well maybe but I think yes
6 0
3 years ago
Other questions:
  • Why do scientists look for asteroids that might strike our planet?
    6·2 answers
  • In atoms, electrons surround the nucleus in
    13·1 answer
  • During both the vernal equinox and _____________, there is an equal amount of night and day.
    15·2 answers
  • Find the specific gravity of the rose quartz. Specific gravity = density of of water.
    13·1 answer
  • A student eats a candy bar that contains 1.57 x 106 J of energy. If the student has a mass of 81.8 kg, how high will he have to
    6·1 answer
  • Why was basketball invented?
    7·1 answer
  • What is the acceleration of a 4.5 kg mass pushed by a 15n force?<br> ANSWER ASAP PLEASE
    5·1 answer
  • In lab, a radiation detector was used to calculate the background radiation. The
    6·1 answer
  • A number line goes from negative 5 to positive 5. Point D is at negative 4 and point E is at positive 5. A line is drawn from po
    5·2 answers
  • What is the coolest thing one earth to you?!
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!