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
weeeeeb [17]
3 years ago
8

A rock climber hangs freely from a nylon rope that is 15 m long and has a diameter of 8.3 mm. If the rope stretches 5.1 cm, what

is the mass of the climber? Young's modulus for nylon is Y=0.37Ã10^10N/m^2.
Physics
1 answer:
irinina [24]3 years ago
6 0

Answer:

Mass of the climber = 69.38 kg

Explanation:

Change in length

        \Delta L=\frac{PL}{AE}

Load, P = m x 9.81 = 9.81m

Young's modulus, Y = 0.37 x 10¹⁰ N/m²

Area

       A=\frac{\pi (8.3\times 10^{-3})^2}{4}=5.41\times 10^{-5}m^2

Length, L = 15 m

ΔL = 5.1 cm = 0.051 m

Substituting

       0.051=\frac{9.81m\times 15}{5.41\times 10^{-5}\times 0.37\times 10^{10}}\\\\m=69.38kg  

Mass of the climber = 69.38 kg

You might be interested in
Is vapor pressure independent of atmospheric pressure? - This is what my instructor told me, but I don't understand why. ...?
miss Akunina [59]
Vapor pressure<span> or equilibrium </span>vapor pressure<span> is defined as the </span>pressure<span> exerted by a </span>vapor<span> in thermodynamic equilibrium with its condensed phases at a certain temperature. It is independent with atmospheric pressure since it does not change by changing the atmospheric pressure only. </span>
5 0
3 years ago
Help me come up with a tittle for a science fair project. I am doing how different voltages affect the brightness of a ligjtbulb
ser-zykov [4K]

Answer:

The volt meets the.... (I can't think of a catchy name for a light bulb) Think about it though

8 0
3 years ago
Read 2 more answers
Scientists discover two planets orbiting a distant star. The average distance from the star to Planet A is 8 AU, and it takes 71
Mama L [17]

Answer: 11.2 AU

Explanation:

Applying Kepler's 3rd law, we can find out the average distance of planet B to the star.

This Law states that for planets orbiting a same star, there exists a fixed relationship between the average distance to  the star, and the period of his orbit  around it, as follows:

K = T² / d³

So , in this case, we can write:

(da)³ / Ta² = (db)³ / (Tb)²

Solving for db:

db = ∛8³.(1170)² / 710² = ∛1390.4 = 11.2 AU

5 0
3 years ago
A car is being tested for safety by colliding it with a brick wall.The 1300 kg car is initially driving towards the wall at a sp
serg [7]

Answer:

44200 N

Explanation:

To calculate the average force exerted on the car, we will use the following equation

\begin{gathered} Ft=\Delta p \\ Ft=m(v_f-v_i) \end{gathered}

Where F is the average force, t is the time, m is the mass, vf is the final velocity and vi is the initial velocity of the car.

Replacing t = 0.5s, m = 1300 kg, vf = -2 m/s, and vi = 15 m/s and solving for F, we get

\begin{gathered} F(0.5s)=(1300\text{ kg\rparen\lparen-2 m/s - 15 m/s\rparen} \\ F(0.5s)=(1300\text{ kg\rparen\lparen-17 m/s\rparen} \\ F(0.5s)=-22100\text{ kg m/s} \\ F=\frac{-22100\text{ kg m/s}}{0.5\text{ s}} \\ F=-44200\text{ N} \end{gathered}

Therefore, the average force exerted on the car by the wall was 44200 N

4 0
1 year ago
An artesian system is present when groundwater __________.
ahrayia [7]
<h2>Answer: under pressure rises above the aquifer level</h2>

Explanation:

An artesian system is one that connects with an accumulation of water (aquifer) whose surface or level is above the surface of the system or well.

In other words, the upper limit of the aquifer is higher than the opening through which the liquid flows in the artesian well. This has the advantage that the water spreads without needing to be pumped.

It should be noted that its name comes from the region of <u>Artois</u>, France, where in 1126 the oldest well in Europe was drilled with these characteristics.

Therefore:

<h2>An artesian system is present when groundwater <u>under pressure rises above the aquifer level.</u></h2>

4 0
3 years ago
Other questions:
  • Modern scientists say that electrons are found in a ...
    6·2 answers
  • Suppose you increase your walking speed from 6 m/s to 13 m/s in a period of 1 s. What is your acceleration? m/s2
    14·1 answer
  • Captain John Stapp is often referred to as the "fastest man on Earth." In the late 1940s and early 1950s, Stapp ran the U.S. Air
    13·2 answers
  • Answer and mark you as brainliest <br> it's that easy
    7·2 answers
  • What is the transfer of energy by collisions between the atoms in the material
    12·2 answers
  • قوة الجذب المركزي تكون في اتجاه
    9·2 answers
  • 10th grade Physical Science.... Help plss
    9·1 answer
  • What is the concentration of H^ + at apH = 2 ? Mol / L What is the concentration of H^ + ions at apH = 6 ? Mol/L How many more H
    5·1 answer
  • Please helppppppp!!!!!!!!!!!!!!!!!!!!!!!!
    9·1 answer
  • A wave has a frequency of 875 hz and a wavelength of 352 m. At what speed is this wave traveling 
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!