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
melisa1 [442]
3 years ago
13

John attached a ball to a spring

Physics
1 answer:
chubhunter [2.5K]3 years ago
8 0

Answer:

C down

Explanation:

The ball is pulling the spring down so this must be the direction of the force

You might be interested in
WILL GIVE BRAINLIEST HELP FASTWhat is the mass of Planet X? Note: The constant of universal gravity (G) equals 6.674 X 10-11 N·m
disa [49]

Answer:

Explanation:

Centripetal acceleration's equation is:

a_c=\frac{v^2}{r} where v is the velocity of the object (moon II) and r is the radius. We have the radius, but we don't have the velocity, and we can't solve for acceleration until we do have it. Assuming moon II is a circle, or close enough to be called a circle, it has a circumference.

C = 2πr. If we can find the circumference of the circle, we can plug in the orbital period for the time, the circumference for the distance, and solve for velocity in d = rt. So let's do that and see what happens.

C = 2(3.14)(9.0 × 10⁷) and

C = d = 5.7 × 10⁸. Plugging in and solving for v:

5.7*10^8=v(3.0*10^5) and

v = 1.9 × 10³. That is the velocity we can use in the centripetal acceleration equation.

a_c=\frac{(1.9*10^3)^2}{9.0*10^7} and

a_c=.040\frac{m}{s^2}

These are fun!

8 0
2 years ago
I have a picture of the question I need help with,
eduard

Given:

The initial velocity of the object, v=30 m/s

a_t=0

a_c≠0

The time period is Δt.

To find:

The right conclusion among the given choices.

Explanation:

a_t represents the tangential accleration on the object and a_c represents the centripetal acceleration on the object.

The centripetal acceleration is the acceleration that keeps the object in its circular path. The centripetal force only changes the direction of the velocity and not the magnitude.

Thus the magnitude of the velocity of the object remains the same after a time interval of Δt. But the direction of the velocity of the object will be changed and will be unknown after Δt seconds.

Final answer:

Thus the object will be traveling at 30 m/s in some unknown direction.

Therefore, the correct answer is option a.

7 0
1 year ago
10. Explain the principle of electric motor. Write its uses.
konstantin123 [22]

Explanation:

The principle of an electric motor is based on the current carrying conductor which produces magnetic field around it. A current carrying conductor is placed perpendicular to the magnetic field so that it experiences a force.

The largest electric motors are used for ship propulsion, pipeline compression and pumped-storage applications with ratings reaching 100 megawatts. Electric motors are found in industrial fans, blowers and pumps, machine tools, household appliances, power tools and disk drives.

6 0
3 years ago
What momentum does a 70 kg person running 10m/s (a fast sprint) have ?
gogolik [260]

Momentum = (mass) x (speed)

Momentum = (70 kg) x (10 m/s)

<em>Momentum = 700 kg-m/s</em>

8 0
3 years ago
What is the magnification of an object that is 4.15 m in front of a camera that has an image position of 5.0 cm?
Stolb23 [73]
-0.012

Done !!!!!!!!
4 0
3 years ago
Other questions:
  • What best describes the degree to which a material can transmit heat
    14·2 answers
  • A salt shaker sits 0.102 m from
    8·1 answer
  • Within the electron cloud there are different _______________ of electrons. A) types B) energy levels C) atomic masses D) electr
    6·2 answers
  • What is the momentum of a dog of mass 14 kg that is running east with a
    12·1 answer
  • In 1967, new zealander burt munro set the world record for an indian motorcycle, on the bonneville salt flats in utah, with a ma
    10·1 answer
  • How many ways or features that allow us to know if something is living or non living?
    11·1 answer
  • A ball is thrown vertically upward with a
    15·1 answer
  • If the ratio of S.E to S.L is 2:5 what does the simple machine multiply
    15·1 answer
  • Angles t and v are complementary.angles T has a mesure of (2X+10). Angle v has a measure of 48 what is the value of x
    5·1 answer
  • Which device uses electricity to produce a rotational motion? A computer C magnet B generator D motor​
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!