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
pickupchik [31]
3 years ago
13

A physics student swings a tennis ball connected to a rope in a vertical circle with a constant speed of 6.29 m/s. The ball has

a period of 0.5 seconds. Determine the length of the rope (the radius of the circle. ​
Physics
1 answer:
Alex777 [14]3 years ago
8 0

Answer:

r = 0.5 m

Explanation:

First we find the angular speed of the ball by using its period:

ω = θ/t

For the time period:

ω = angular speed = ?

θ = angular displacement = 2π rad

t = time period = 0.5 s

Therefore,

ω = 2π rad/0.5 s

ω = 12.56 rad/s

Now, for the radius:

v = rω

r = v/ω

where,

v = linear speed = 6.29 m/s

r = radius = ?

r = (6.29 m/s)/(12.56 rad/s)

<u>r = 0.5 m</u>

You might be interested in
An airplane undergoes the following displacements, all at the same altitude: First, it flies 59.0 km in a direction 30.0° east o
ddd [48]

Answer:

B) 71.5 [km]

Explanation:

To solve this problem we will decompose each of the directions in the x & y axes.

To solve this problem we will decompose each of the directions in the x & y axes. also for a greater understanding of the angles, you should look at the attached image, which contains the orientations for each angle (clockwise or counterclockwise).

<u>59.0 km in a direction 30.0° east of north</u>

<u />

d_{1x}= 59*sin(30) = 29.5[km]\\d_{1y}= 59*cos(30) = 51.09[km]

<u>58.0 km due south</u>

<u />

d_{2y} = - 58 [km]\\

<u>It flies 100 km 30.0° north of west</u>

<u />

<u />d_{3x}= - 100*cos(30) = -86.6[km]\\d_{3y} = 100*sin(30)= 50 [km]<u />

<u />

Now we sum algebraically the components

d_{x}=29.5-86.6 = -57.1[km]\\d_{y}=51.09 -58+50=43.09[km]\\\\

Using the Pythagorean theorem we can find the magnitude of the displacement.

d = \sqrt{(57.1)^{2} +(43.09)^{2} } \\d= 71.53[km]

7 0
3 years ago
When is the next total solar eclipse in illinois
atroni [7]

April 8, 2024

Eclipse will be total over the southern part of the state.  Roughly everything south of Decatur and Springfield.

7 0
3 years ago
Reply quick pls
Sholpan [36]
The ball was moving for 0.8seconds
This is because 4/5 x 1 = 0.8

Hope this helps and good luckkkk :)
4 0
2 years ago
Explain how the fixed points are used when calibrating a thermometer. ​
8090 [49]

<u>Answer:</u>

First, the thermometer is dipped into boiling water, and the mercury inside the thermometer rises to a high level, called the boiling point. This level is then marked as 100°C. The thermometer is then dipped into melting ice, which causes the mercury level to fall to a point called the ice point. This point is then marked as 0°C. The length of the thermometer from the 0°C mark to the 100°C point is then divided into 100 equal sections, and the rest of the levels are marked accordingly.

8 0
2 years ago
Which of the following statements best describes energy conservation in heat engines?
Lorico [155]
B is the correct answer
5 0
2 years ago
Other questions:
  • Which of the following is a part of a wave?
    15·1 answer
  • Sound is more effectively transmitted into a stethoscope by direct contact than through the air, and it is further intensified b
    13·1 answer
  • A cake is removed from an oven at 210F and left to cool at room temperature, which is 70F.After 30 min the temperature of the ca
    6·1 answer
  • Just need help with this one
    14·1 answer
  • Can I get someone's email and talk to them?
    7·1 answer
  • 1.- Que distancia recorrió una carga de 2,5x10-6 coul, generando así un campo eléctrico de 55new/coul.​
    5·1 answer
  • Table B:Convection (Cold Water) Time (minutes : seconds) Food Coloring Movement 0:30 1:00 1:30 2:00 2:30 3:00
    15·1 answer
  • A car starts at rest and accelerates at a rate of 4 m/s^2. How far does the car travel in 5
    14·1 answer
  • What is the displacement of a car traveling 14 km North on I985 then 20 km South on I985?
    8·1 answer
  • What causes an object to slowdown or speed up
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!