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
fiasKO [112]
3 years ago
15

Review Multiple-Concept Example 7 in this chapter as an aid in solving this problem. In a fast-pitch softball game the pitcher i

s impressive to watch, as she delivers a pitch by rapidly whirling her arm around so that the ball in her hand moves in a circle. In one instance, the radius of the circle is 0.602 m. At one point on this circle, the ball has an angular acceleration of 64.1 rad/s2 and an angular speed of 13.0 rad/s. (a) Find the magnitude of the total acceleration (centripetal plus tangential) of the ball. (b) Determine the angle of the total acceleration relative to the radial direction.
Physics
1 answer:
soldi70 [24.7K]3 years ago
6 0

Answer:

108.8 m /s

θ = 21°

Explanation:

Centripetal acceleration = ω² R

=( 13 )² x .602

= 101.74 m/s²

tangential acceleration a_t = angular acceleration x R

= 64.1 x .602

= 38.58 m /s²

Total acceleration R

R² = ( 101.74 )² + ( 38.58 )²

R = 108.8 m /s

angle required be θ

Tanθ = tangential accn  / radial accn

= 38.58  / 101.74

θ = 21°

You might be interested in
The reaction is at dynamic equilibrium.
DiKsa [7]

Answer:

Nitrogen and hydrogen combine at the same rate that ammonia breaks down.

Explanation:

7 0
2 years ago
If the second harmonic of a certain string is 42 Hz, what is the fundamental frequency of the string?
sdas [7]
Data:
f_{2} = 42 Hz
n (Wave node)
V (Wave belly) 
L (Wave length)
<span>The number of bells is equal to the number of the harmonic emitted by the string.
</span>
f_{n} =  \frac{nV}{2L}

Wire 2 → 2º Harmonic → n = 2

f_{n} = \frac{nV}{2L}
f_{2} = \frac{2V}{2L} &#10;
2V =  f_{2} *2L
V =  \frac{ f_{2}*2L }{2}
V =  \frac{42*2L}{2}
V =  \frac{84L}{2}
V = 42L

Wire 1 → 1º Harmonic or Fundamental rope → n = 1


f_{n} = \frac{nV}{2L}
f_{1} = \frac{1V}{2L}
f_{1} =  \frac{V}{2L}

If, We have:
V = 42L
Soon:
f_{1} = \frac{V}{2L}
f_{1} = \frac{42L}{2L}
\boxed{f_{1} = 21 Hz}

Answer:

<span>The fundamental frequency of the string:
</span>21 Hz

7 0
3 years ago
Read 2 more answers
During a test, a solution placed on a sheet
suter [353]

Answer:

B. Acidic

Explanation:

Neutral an Basic solutions wouldn't create any reaction

3 0
3 years ago
If a 160W light bulb consumes 1000J of electrical energy in a given time, then in the same time interval, how much energy will a
NNADVOKAT [17]
160w/4 = 40w
1000J/ 4= 250J
a 40w light bulb will consume 250J
7 0
2 years ago
Read 2 more answers
A hydrogen atom has 1 electron. In which level is it?
kolezko [41]

If it is in its ground state, it will be in the level 1s

3 0
3 years ago
Other questions:
  • Static discharges occur when
    15·2 answers
  • A force acting upon an object to cause a displacement is known as:
    5·2 answers
  • What determines the chemical properties of an element? A. the number and arrangement of the electrons in an atom B. the number o
    13·2 answers
  • Una rapidez de 7 mm/us es igual a:<br><br> A) 7000m/s<br> B) 70 m/s<br> C) 7 m/s<br> D) 0.07 m/s
    13·1 answer
  • Plz I need help !!!!!!!
    7·2 answers
  • Plz help anybody good in Physics?
    11·1 answer
  • Some elements have a low degree of freedom and high intermolecular forces between its molecules. These elements are ________ at
    7·2 answers
  • If two objects collid and one is initially at rest, is it possible for both to be at rest after the collision?
    8·1 answer
  • Hii please help i’ll give brainliest if you give a correct answer please
    14·1 answer
  • The forces exerted by Earth and a skier become an action-reaction force pair when the skier pushes the ski poles against Earth.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!