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
Angelina_Jolie [31]
3 years ago
9

A good baseball pitcher can throw a baseball toward home plate at 87 mi/h with a spin of 1710 rev/min. How many revolutions does

the baseball make on its way to home plate? For simplicity, assume that the 60 ft path is a straight line.
Physics
1 answer:
otez555 [7]3 years ago
4 0

Explanation:

First, convert 87 mi/h to ft/min.

87 mi/h × (5280 ft/mi) × (1 h / 60 min) = 7656 ft/min

The time to reach the home plate is:

t = 60 ft / 7656 ft/min

t = 0.00784 min

The number of revolutions made in that time is:

n = 1710 rev/min × 0.00784 min

n = 13.4 rev

Rounding to 2 significant figures, the ball makes 13 revolutions.

You might be interested in
What happens to most of the light waves that strike a clear pane of glass? O A. absorption B. diffraction O C. reflection O D. t
Lorico [155]

Answer:reflection

Explanation:

5 0
3 years ago
Studies of sedimentary rocks and fossils have helped scientists understand the history of Earth. How is geologic time organized
grin007 [14]
Eras and then smaller periods based on geologic and biologic events that occurred during those times. According to geological time scale, there are six eras from the beginning some periods of few eras & then period is classified into smaller units called "epoch"

In short, Your Answer would be Option B

Hope this helps!
7 0
3 years ago
Read 2 more answers
Compare the momentum of a 6,300-kg elephant walking 0.11 m/s and a 50-kg dolphin swimming 10.4 m/s. your answer
bogdanovich [222]
<span>First sum applied the Newton's second law motion: F = ma Force = mass* acceleration This motion define force as the product of mass times Acceleration (vs.Velocity). Since acceleration is the change in velocity divided by time, force=(mass*velocity)/time such that, (mass*velocity)/time=momentum/time Therefore we get mass*velocity=momentum Momentum=mass*velocity Elephant mass=6300 kg; velocity=0.11 m/s Momentum=6300*0.11 P=693 kg (m/s) Dolphin mass=50 kg; velocity=10.4 m/s Momentum=50*10.4 P=520 kg (m/s) The elephant has more momentum(P) because it is large.</span>
5 0
3 years ago
A cylindrical vessel with water is rotated about its vertical axis with a constant angular velocity co. Find:
Nataly [62]

Answer:

Explanation:

The question is one that examine the physical fundamental of mechanics of a cylindrical vessel .

We would use the Euler' equation and some coriolis and centripetal force formula.

The fig below explains it.

4 0
3 years ago
Read 2 more answers
A 2 kilogram rabbit starts from rest and is moving at 6m/s after 3 seconds. What net force must be exerted on the rabbit (by the
horrorfan [7]
A = (Vf-Vi) / t,
a = (6-0)/3 = 2m/s^2,

F = ma = 2 * 2 = 4N
8 0
3 years ago
Other questions:
  • Which of these statements about a dipole are correct? Select all that are true.
    12·1 answer
  • What is the theory of punctuated equilibrium answers?
    15·2 answers
  • What is the name for a quantity that has both magnitude and direction
    5·1 answer
  • An atom’s emission of light with a specific amount of energy confirms that
    5·2 answers
  • What is most likely to occur when the sun moon and earth are alone in a straight line
    5·1 answer
  • 7. A pool cue ball moving at 2.1 m/s east collides in a straight line with the eight ball at rest. Find the velocity of the eigh
    7·2 answers
  • A 260-m length of wire stretches between two towers and carries a 115-a current. determine the magnitude of the force on the wir
    5·1 answer
  • Convert gravitational potential energy to kinetic energy.
    6·1 answer
  • The process by which lithospheric plates move apart creating spaces that are filled with hot magma is called _____.
    5·2 answers
  • What is the definition of energy in scientific terms?.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!