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
uysha [10]
3 years ago
11

A puck of mass m 0.085 kg is going in a circle on a horizontal frictionless surface. It is held in its orbit by massless string

of length L = 0.84 m. The puck makes one revolution every t= 0.55 s. 50%
What the magnitude of the tension in the string, F, in Newtons, while it spins?
Physics
1 answer:
attashe74 [19]3 years ago
8 0

Answer:

Explanation:

Magnitude of tension

= centripetal force

= m ω²R

= m (2π/T)² R , T is time period of revolution.

= .085 x (2 x 3.14 / .55)² x .84

= 9.3  N .  

You might be interested in
An object has a height of 0.066 m and is held 0.210 m in front of a converging lens with a focal length of 0.140 m. (Include the
Anvisha [2.4K]

Explanation:

Given that,

Size of object, h = 0.066 m

Object distance from the lens, u = 0.210 m (negative)

Focal length of the converging lens, f = 0.14 m

If v is the image distance from the lens, we can find it using lens formula as follows :

\dfrac{1}{v}-\dfrac{1}{u}=\dfrac{1}{f}\\\\\dfrac{1}{v}=\dfrac{1}{f}+\dfrac{1}{u}\\\\\dfrac{1}{v}=\dfrac{1}{0.14 }+\dfrac{1}{(-0.21)}\\\\v=0.42\ m

(a) Magnification,

m=\dfrac{v}{u}\\\\m=\dfrac{0.42}{(-0.21)}\\\\m=-2

(b) Magnification, m=\dfrac{h'}{h}

h' is image height

-2=\dfrac{h'}{0.066}\\\\h'=-2\times 0.066\\\\h'=-0.132\ m

Hence, this is the required solution.

4 0
3 years ago
Question 4 of 10
kiruha [24]
B hey what do u know i took that test to
5 0
3 years ago
When driving straight down the highway at a constant velocity you have to give the engine a little gas (which means an added ext
Alona [7]

Answer:

Explanation:

This does not violate Newton's 1st law because the net force would still be 0 in order to produce uniform motion (aka constant velocity). The other forces acting on the vehicles is air resistance which is non-zero. So we need car internal force to counter balance this force, which require extra gas for the car.

7 0
4 years ago
Which of these is the most ductile? A. clay B. gold C. wood D. glass
Feliz [49]
I'm pretty sure the answer is gold
8 0
3 years ago
If the atoms of one object (initially neutral) have electrons rubbed off through friction with a second object, the first object
snow_lady [41]
Positive. The 1st object loses electrons and will thus have an imbalance of charge with loss of electrons.
4 0
4 years ago
Other questions:
  • 6. If a vehicle needs 5s to complete 15m. Find the mean speed of it?
    11·1 answer
  • Where are some places that cyber bullying occurs? Check all that apply
    10·1 answer
  • You've recently read about a chemical laser that generates a 20.0-cm-diameter, 26.0 MW laser beam. One day, after physics class,
    13·1 answer
  • The most abundant element in the universe is:
    10·1 answer
  • Un avión tarda en llegar a su destino 12 horas. Si recorrió una distancia de 10.700 kilómetros. Calcular su velocidad y expesarl
    10·1 answer
  • How do intensity, frequency, and time affect physical fitness?
    5·1 answer
  • The drawings show three charges that have the same magnitude but may have different signs. In all cases the distance d between t
    15·1 answer
  • What does the blackboard do when white light falls on it?​
    14·1 answer
  • The si unit of mass is the Newton. True or false.
    15·1 answer
  • HELPPP PLEASE URGENT
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!