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
GREYUIT [131]
2 years ago
15

Which of these forces could speed up a baseball?

Physics
2 answers:
kkurt [141]2 years ago
5 0
B) Applied and gravitational forces
Slav-nsk [51]2 years ago
5 0

Answer:

b)

Explanation:

You might be interested in
The blades in a blender rotate at a rate of 7700 rpm. when the motor is turned off during operation, the blades slow to rest in
Tpy6a [65]

Angular acceleration = (change in angular speed) / (time for the change)

Change in angular speed = (speed at the end) - (speed at the beginning)

For this fan, speed at the end = 7700 rpm, speed at the end = 0 .

Change in angular speed = -7700 rpm

Angular acceleration = (-7700 rpm) / (2.5 sec)

<em>Angular acceleration = -3,080 rev per minute / sec</em>

That's a perfectly good and true answer to the question, but the units are ugly.  We really need to fix the units, and convert them into something prettier before we hand in this assignment.

1 rev = 2π radians, and

1 minute = 60 seconds .

So

Angular acceleration =

(-3,080 rev/min-sec) · (2π rad/rev) · (1 min/60 sec)

AngAccel = (-3,080 · 2π · 1 / 60) · (rev·rad·min / min·sec·rev·sec)

AngAccel = ( -102 and 2/3 · π) · (rad/s²)

<em>AngAccel = -322.5 radian/s²</em>

7 0
3 years ago
A lamp has a power of 120 W and is left on for 24 hours . A television has a power of 350 W and is left on for three hours . com
Paladinen [302]
This is a power problem which requires the rearranging of a formula. The lamps energy used is 5 N, and the TV’s usage is 116.7 N (rounded from 116.6666repeating). Here my work:
7 0
3 years ago
Read 2 more answers
already did the work, i just need someone to see if i did the tangent line right? the line has to touch the point 0.6! thank you
Dmitrij [34]

The tangent looks good.

The curve is a bit crooked, at the 0.9 and 1.

But overall, cool graph.

5 0
2 years ago
Convection within the causes the plates to move.<br> mantle<br> ocean<br> inner core<br> crust
lyudmila [28]

Answer:

As described, The mantle causes the tectonic plates to move.

4 0
3 years ago
Which contributions did Johannes Kepler make? Check all that apply. He revived Aristotle's model of the solar system. He solved
Arada [10]

The correct answers are: Options 2,4 and, 5

2)He solved Ptolemy’s model by proving elliptical orbits.

4)He determined that planets move faster when closer to the Sun.

5)He discovered laws of planetary motion.

3 0
3 years ago
Read 2 more answers
Other questions:
  • The length of a 100 mm bar of metal increases by 0.3 mm when subjected to a temperature rise of 100°C. The coefficient of linear
    15·1 answer
  • Suppose that, from measurements in a microscope, you determine that a certain bacterium covers an area of 1.50 μm2. Convert this
    9·1 answer
  • An uniform electric field of magnitude E = 100 N/C is oriented along the positive y-axis. What is the magnitude of the flux of t
    6·1 answer
  • Science please helppp
    11·1 answer
  • LED light bulbs are more energy efficient, last longer, cost more, and have a smaller environmental impact from manufacture to r
    15·1 answer
  • Drag the tiles to the correct boxes to complete the pairs.
    7·1 answer
  • What is the least whole number that rounds to 67,400
    12·1 answer
  • An object is 70 micrometer long and 47.66 micrometer wide. How long and wide is the object in km
    8·1 answer
  • Count how many significant figures each of the quantities below has:
    15·1 answer
  • True or False : If a car drives on a road for a nonzero amount of time, then its average velocity must be nonzero.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!