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
alisha [4.7K]
3 years ago
12

A child on a swing sweeps out a distance of 45 ft on the first pass. If she is allowed to continue swinging until she​ stops, an

d if on each pass she sweeps out a distance one half of the previous​ pass, how far does the child​ travel?
Physics
1 answer:
earnstyle [38]3 years ago
6 0

Answer:

d = 90 ft

Explanation:

Here in each swing the distance sweeps by the swing is half of the initial distance that it will move

So here we can say that total distance in whole motion is  given as

d = 45 + \frac{45}{2} + \frac{45}{4} + \frac{45}{8}..........

since it is half of the distance that it will move in each swing so it would be a geometric progression with common ratio of 1/2

so sum of such GP is given by the formula

S = \frac{a}{1 - r}

d = \frac{45}{1 - \frac{1}{2}}

d = 90 ft

You might be interested in
What current is needed to generate the magnetic field strength of 5.0×10−5T at a point 1.5 cm from a long, straight wire? Expres
mixer [17]

Answer:

3.7 A

Explanation:

Parameters given:

Magnetic field strength, B = 5 * 10^(-5) T

Distance of magnetic field from wire, r = 1.5 cm = 0.015 m

The magnetic field, B, due to a current, I, flowing a wire is given as:

B = (μ₀*I) / 2πr

Where μ₀ = permeability of free space

To get the current, I, we make I the subject of the formula:

I = (2πr * B) / μ₀

I = (2 * 3.142 * 5 * 10^(-5)) / (1.25663706 × 10^(-6))

I = 3.7 A

4 0
3 years ago
15.<br> What can you do at school to help conserve the resources of the environment?
Alborosie

Answer: #1. Close the door when air conditioner is on  #2. I would use only 1 paper towel when drying your hands #3.  Recycle  #4. use water bottles that are not to be plastic.

<em>So these are things that you can do to conserve the resources from the environment in your school! </em> So hopefully i had helped you answer this question! Have a Great Day!

3 0
3 years ago
The batteries in the figure above are connected in​
Elena-2011 [213]
The answer is a, series circuit.
5 0
3 years ago
Read 2 more answers
Three 1.5V cells are connected in series in a circuit. What is the total potential difference?
lorasvet [3.4K]

Answer:

4.5V

Explanation:

1.5x3= 4.5

4 0
3 years ago
Which of the following has the fewest calence electrons?
dlinn [17]

Answer:

both magnesium and strontium have 2 valence electrons

Explanation:

potassium has 8 valence electrons, and nitrogen has 5.

8 0
2 years ago
Other questions:
  • Estimate the distance (in cm) between the central bright region and the third dark fringe on a screen 5.00 m from two double sli
    11·1 answer
  • The length of a vector indicates the magnitude of the vectoor<br>A. True<br>B. False​
    8·2 answers
  • Discuss the phase change condition due to reflection of light from a surface. Summarize equations of interference for thin film.
    11·1 answer
  • An object is dropped near the earth's surface. At the end of 4.0 s, how fast is it falling in m/s? (Ignore air resistance.)
    7·2 answers
  • Which of the following statements is NOT true?
    13·1 answer
  • In a certain region of space, the electric potential is V(x,y,z)=Axy−Bx^2+Cy, where A, B, and C are positive constants. (a) Calc
    7·1 answer
  • The average, year-after-year conditions of temperature, precipitation, winds, and cloud in an area are known as its
    11·1 answer
  • Which is the length of the route between two points
    12·1 answer
  • Zeb was lifting a box onto a moving truck. He lifted with a net force of 2000N and the box had a mass of 100 kg. What was the re
    11·1 answer
  • Based on this how many Carbon<br> Atoms would be on the products <br> Side
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!