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
MaRussiya [10]
1 year ago
15

A 45-kg pole vaulter running at 10 m/s vaults over the bar. Her speed when she is above the bar is 1.1 m/s. Neglect air resistan

ce, as well as any energy absorbed by the pole, and determine her altitude as she crosses the bar.
_______m
Physics
1 answer:
Lubov Fominskaja [6]1 year ago
7 0

The altitude or height of the pole vaulter as she crosses the bar is 4.04 m.

<h3>What is the height of the pole vaulter?</h3>

The height of the pole vaulter is determined from the change in kinetic energy which is equal to the potential energy at that height.

  • Potential energy = Change in kinetic energy
  • mgh = m(v - u)²/2

h = (v - u)²/2g

h = (10 - 1.1)²/2 * 9.8

h = 4.04 m.

In conclusion, the height is determined from the potential energy at that height.

Learn  more about potential energy at: brainly.com/question/14427111

#SPJ1

You might be interested in
You are working on a laboratory device that includes a small sphere with a large electric charge Q. Because of this charged sphe
madam [21]

Answer:

the only effect it has is to create more induced charge at the closest points, but the net face remains zero, so it has no effect on the flow.

Explanation:

We can answer this exercise using Gauss's law

      Ф = ∫ e . dA = q_{int} / ε₀

field flow is directly proportionate to the charge found inside it, therefore if we place a Gaussian surface outside the plastic spherical shell.  the flow must be zero since the charge of the sphere is equal  induced in the shell, for which the net charge is zero. we see with this analysis that this shell meets the requirement to block the elective field

From the same Gaussian law it follows that if the sphere is not in the center, the only effect it has is to create more induced charge at the closest points, but the net face remains zero, so it has no effect on the flow , so no matter where the sphere is, the total induced charge is always equal to the charge on the sphere.

5 0
3 years ago
Some people today claim the Earth is flat. Produce an argument to prove that the
butalik [34]
It’s not flat because how can we be 3D when our planet is flat
6 0
3 years ago
Read 2 more answers
Rita is a salon owner. She notices that her salon charged one of her clients, Linda, extra for a service that the clent did not
Aloiza [94]

Answer:

C hope it helps

call the client and inform her that she was incorrectly charged.

7 0
3 years ago
A 0.106-A current is charging a capacitor that has square plates 6.00 cm on each side. The plate separation is 4.00 mm. (a) Find
FrozenT [24]

Answer:

The time rate of change of flux is 1.34 \times 10^{10} \frac{V}{s}

Explanation:

Given :

Current I = 0.106 A

Area of plate A = 36 \times 10^{-4} m^{2}

Plate separation d = 4 \times 10^{-3} m

(A)

First find the capacitance of capacitor,

   C = \frac{\epsilon _{o} A }{d}

Where \epsilon _{o} = 8.85 \times 10^{-12}

   C = \frac{8.85 \times 10^{-12 } \times 36 \times 10^{-4}  }{4 \times 10^{-3} }

   C = 7.9 \times 10^{-12} F

But   C = \frac{Q}{V}

Where Q = It

  C = \frac{It}{V}

  V = \frac{It}{C}

Now differentiate above equation wrt. time,

  \frac{dV}{dt} = \frac{I}{C}

       = \frac{0.106}{7.9 \times 10^{-12} }

       = 1.34 \times 10^{10} \frac{V}{s}

Therefore, the time rate of change of flux is 1.34 \times 10^{10} \frac{V}{s}

8 0
3 years ago
Given the diagram below determine the net force acting on the object
crimeas [40]

A) 0

because all of the forces cancel out, so it is not moving with balanced forces.

7 0
3 years ago
Read 2 more answers
Other questions:
  • Choose the mathematical formula expressing work. W=F x d W=d/F W=F/d
    5·2 answers
  • Which part of the steam engine does the work?
    6·2 answers
  • A whale swims due east for a distance of 6.9 km, turns around and goes due west for 1.8 km, and finally turns around again and h
    5·1 answer
  • The two days of the year on which neither hemisphere is tilted toward or away from the sun are called
    13·2 answers
  • At room temperature, an oxygen molecule, with mass of 5.31x10^-26kg , typically has a kinetic energy of about 6.21x10^-21J. How
    13·1 answer
  • You drop two rocks. one rock has a mass of 8kg and the other a mass of 7kg. The 8kg rock falls no faster than the 7kg rock for w
    8·1 answer
  • Heated lithium atoms emit photons of light with an energy of 2.961 × 10−19 J. Calculate the frequency and wavelength of one of t
    11·1 answer
  • When a teenager plugs his stereo into the same outlet as the television and lamp, all three devices stop working. What is the mo
    8·2 answers
  • Whoever get this right gets free cookies. best deal. ( BASIC PHYSICS QUESTION )
    14·1 answer
  • Which one will have more pressure? Explain
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!