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
avanturin [10]
3 years ago
14

A baseball pitcher brings his arm forward during a pitch, rotating the forearm about the elbow. If the velocity of the ball in t

he pitcher's hand is 35.0 m/s and the ball is 0.300 m from the elbow joint, what is the angular velocity of the forearm?
Group of answer choices
A) 10.5 rad/s
B) 0.0952 rad/s
C) 0.00857 rad/s
D) 117 rad/s
Physics
1 answer:
stiv31 [10]3 years ago
3 0

Answer:

D) 117 rad/s

Explanation:

We can treat this system as a circular motion where the origin is the elbow joint, the ball rotation velocity v is 35 m/s, the rotation radius is r = 0.3m.

As the ball is leaving the pitcher hand at such speed and rotation radius. Its angular velocity is:

\omega = \frac{v}{r} = \frac{35}{0.3} = 117 rad/s

You might be interested in
The rate at which energy is transferred is called
makvit [3.9K]

Answer:

The rate at which energy is transferred is called power and the amount of energy that is usefully transferred is called efficiency.

6 0
3 years ago
Read 2 more answers
How does superposition provide evidence for the evolution of earth?
77julia77 [94]

Answer:

Explanation: This Law of Superposition is fundamental to the interpretation of Earth history, because at any one location it indicates the relative ages of rock layers and the fossils in them.

7 0
3 years ago
Which phenomena did Michael Faraday explore to help him invent the motor and the generator?
mamaluj [8]
The best and most correct answer among the choices provided by the question is the fourth choice. The phenomenon that Michael Faraday explored was electricity and magnetism. I hope my answer has come to your help. God bless and have a nice day ahead!
8 0
3 years ago
Read 2 more answers
HELP <br> HELP<br> SORRY TO BEG :/<br> HELP ASAP :) PLZ
pav-90 [236]
He studied galaxies, source: “Hubble proved that many objects previously thought to be clouds of dust and gas and classified as "nebulae" were actually galaxies beyond the Milky”
6 0
2 years ago
If the numbers on the plate are 6.0 cm apart, and the spy satellite is at an altitude of 160 km , what must be the diameter of t
Alexxx [7]

Answer:

The diameter of the camera aperture must be greater than or equal to 1.49m

Explanation:

Let the distance separating two objects, x = 6.0 cm = 0.06 m

The distance between the observer and the two objects, d = 160 km = 160000 m

Let ∅ = minimum angular separation between the two objects that the satellite can resolve

tan( ∅) = x/d

Since there is minimum angular separation, tan( ∅) ≈∅

∅ = x/d

∅ = 0.06/160000

∅ = 3.75 * 10⁻⁷rad

For the satellite to be able to resolve the objects,

D ≥ 1.22λ/∅

λ = 560 nm = 560 * 10⁻⁹

D  ≥ 1.22 *  (560 * 10⁻⁹)/(3.75 * 10⁻⁷)

D  ≥ 149.33 * 10⁻² m

D  ≥ 1.49 m

7 0
2 years ago
Other questions:
  • What is the definition of distance?
    6·1 answer
  • All the atoms of an element have the same number of which subatomic particles? Select one: a. protons b. electrons c. neutrons
    15·1 answer
  • What makes an object stop,<br> speed up, slow down or change<br> direction?<br> V2
    9·1 answer
  • Points A, B, and C form the vertices of a triangle in a nonuniform electrostatic field. The electrostatic work done on a particl
    9·1 answer
  • If one's hands are being warmed by holding them to one side of a flame, the predominant form of heat transfer is what process?
    11·1 answer
  • A 1000kg truck traveling at 108km/h skids 10m before it stops. What is the magnitude of the frictional force acting on the car?
    8·1 answer
  • Why do tin roofs make creaking sounds on hot days?
    7·2 answers
  • A crazy dog runs at a constant speed of 19.85 mi/hr for 6.09 min. How far does the dog travel during this time period?
    10·1 answer
  • What measurement do we use to determine the amount of force used to move an object by a simple machine
    6·1 answer
  • a hiker walks 200 m west and then walks 100 m north in what direction is her resulting displacement draw to show your answer​
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!