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
Stolb23 [73]
3 years ago
8

Simple Pendulum: A 34-kg child on an 18-kg swing set swings back and forth through small angles. If the length of the very light

supporting cables for the swing is 4.9 m, how long does it take for each complete back-and-forth swing
Physics
2 answers:
SIZIF [17.4K]3 years ago
5 0

Answer:

The correct answer is "4.443 sec".

Explanation:

Given:

Mass of child,

= 34 kg

Mass of swing,

= 18 kg

Length,

= 4.9 m

The time period of pendulum will be:

T = 2 \pi \sqrt{4g}

  = 2 \pi \sqrt{\frac{4.9}{9.8} }

  = 4.443 \ sec  

Tanya [424]3 years ago
5 0

Answer:

The time taken to back and forth is 4.4 s .

Explanation:

Length, L = 4.9 m

let the time period is T.

Acceleration due to gravity, g = 9.8 m/s^2

Use the formula of time period

T = 2 \pi\sqrt{L}{g}\\\\T = 2 \times 3.14\sqrt{4.9}{9.8}\\\\T = 4.4 s

You might be interested in
When popcorn is heated over a flame, the kernel burst open. why does this occur?
Bezzdna [24]
<span>If you faced the situation when  popcorn is heated over a flame and the kernel burst opened the thing which caused that is definitely : the air and water vapor which remain in the kernell have expanded.
Hope that helps.

</span>
4 0
3 years ago
The vertical velocity
cestrela7 [59]

it would be at least 9.8m/s


3 0
3 years ago
Acceleration is rate of change of <br>A-Position<br>B-Time<br>C-Velocity<br>D-Speed​
Drupady [299]
<h3>Answer:</h3>

[C] Velocity.

<h3>Explanation:</h3>

<u>As we know that</u>,

  • a = v - u/t

<u>where, a = acceleration, v = final velocity, u = initial velocity and t = time taken to travel</u>.

8 0
3 years ago
Read 2 more answers
Identical twins Kate and Karen are rowing their boat on a hot Summer afternoon when they decide to go for
Ugo [173]
I think it will reduce in speed because friction drags it to the opposite direction and it were the girls mass that was overcoming friction but i think it is newtons 2nd law of motion
5 0
2 years ago
You are pushing a box up a ramp with 70 N of force. If the ramp is made steeper and shorter, what needs to happen to the box for
Elenna [48]

Answer:

A larger force than 70 N will be required for the box to continue moving

Explanation:

A ramp is an inclined plane surface that is tilted to form a slope on its opposite sides

A ramp provides mechanical advantage or force amplification, by allowing less force to lift heavier load from having to move through a longer distance to reach a particular elevation when the slope of the ramp is gentle

Therefore, when the slope is steeper, and shorter, more force than 70 N will be required for the box to continue moving.

6 0
3 years ago
Other questions:
  • Ana poured equal amounts of water into four bowls. Then she put the bowls in the sun for different amounts of time. She recorded
    7·2 answers
  • What happens to the car if it is traveling in a circular path suddenly encounters ice?
    5·2 answers
  • A long solenoid that has 1,140 turns uniformly distributed over a length of 0.415 m produces a magnetic field of magnitude 1.00
    7·1 answer
  • w strong are you? Could you turn a moving car with just your own strength? No way! If a normal driver inputs about 50 N of force
    7·1 answer
  • Name on contact force and one field force acting on you right now
    11·1 answer
  • Do you have a lawn mower engine running for 20 minutes does 4,560, 000 J of work. What is the power output of the engine?
    13·1 answer
  • 2. Adelia holds a shiny steel spoon with its back (convex surface) facing her eyes at a distance
    15·1 answer
  • What voltage battery would you need to send 2.5A of current through a light bulb of resistance 3.6 ohm
    12·1 answer
  • You ride on an elevator that is moving with constant upward acceleration while standing on a bathroom scale. the reading on the
    7·1 answer
  • What would the charge be on an ion with 8 protons 7 neutrons and 6 elements?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!