What activities should you avoid to prevent static discharge while working on a computer?

Tarzan swings on a 26.2 m long vine initially inclined at an angle of 28° from the vertical. (a) What is his speed at the bottom

Marianna [84]

Answer

given,

length of the swing = 26.2 m

inclined at an angle = 28°

let, the initial height of the Tarzan be h

h = L (1 - cos θ)

a) initial velocity v₁ = 0 m/s

final velocity of Tarzan = v_f

law of conservation of energy

PE_i + KE_i = PE_f + KE_f

$mgh_i + \dfrac{1}{2}mv_i^2= mgh_f + \dfrac{1}{2}mv_f^2$

$mgh_i + 0 = 0 + \dfrac{1}{2}mv_f^2$

$mgh_i = \dfrac{1}{2}mv_f^2$

$v_f = \sqrt{2gh_i}$

$= \sqrt{2gL(1- cos\theta)}$

$= \sqrt{2\times 9.8 \times 26.2(1- cos 28^0)}$

= 7.75 m/s

the speed tarzan at the bottom of the swing

v_f = 7.75 m/s

b)initial speed of the = 3 m/s

$mgh_i + \dfrac{1}{2}mv_i^2= mgh_f + \dfrac{1}{2}mv_f^2$

$mgh_i + 0 = 0 + \dfrac{1}{2}mv_f^2$

$mgh_i+ \dfrac{1}{2}mv_i^2 = \dfrac{1}{2}mv_f^2$

$gh_i+ \dfrac{1}{2}v_i^2 = \dfrac{1}{2}v_f^2$

$v_f = \sqrt{v_1^2+2gh_i}$

$v_f = \sqrt{3^2+2\times 9.8 \times (1- cos 28^0)}$

v_f= 11.29 m/s

3 0

3 years ago

Which strategy should you use if your research question is too broad for the scope of your project? (1 O narrow the focus of res

Nesterboy [21]

Answer:

"Narrow the focus of research question"

Explanation:

O Narrow the focus of research question

This is good! You can still use your question, but focus in on something so you have a proper research project.

O Add another research question

Would adding another question to an already broad question help? No.

O Use the very first source you find for your project

If your question is too broad, you should not use whatever you see first as it may be incorrect or does not answer the question

O Change the scope of your project

You could, but if you have a set scope for your project (a) you might not be able to change it (b) you don't need to restart

Have a nice day!

I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)

- Heather

3 0

2 years ago

Inside a car that was at 273 K, a bottle with a pressure at 100,000 pascals warms up to

Deffense [45]

Answer:

P2 = 128,205 pascal.

Explanation:

<u>Given the following data;</u>

Original Pressure, P1 = 100,000 pascals

Original Temperature, T1 = 273K

New Temperature, T2 = 350K

To find new pressure P2, we would use Gay Lussac' law.

<em>Gay Lussac's law states that when the volume of an ideal gas is kept constant, the pressure of the gas is directly proportional to the absolute temperature of the gas. </em>

Mathematically, Gay Lussac's law is given by;

$PT = K$

Where;

P represents pressure.

T represents temperature.

K is the constant of proportionality.

$\frac{P1}{T1} = \frac{P2}{T2}$

<em>Making P2 as the subject formula, we have;</em>

$P_{2}= \frac{P1}{T1} * T_{2}$

Substituting into the equation, we have;

$P_{2}= \frac{100000}{273} * 350$

$P_{2}= 366.3004* 350$

P2 = 128205.13 ≈ 128205 pascal.

<em>Therefore, the pressure inside the hot water bottle is 128,205 pascal. </em>

5 0

2 years ago

You need to make a spring scale to measure the mass of objects hung from it. You want each 2.1 cm length along the scale to corr

Gennadij [26K]

Answer:

46.67 N/m

Explanation:

mass, m = 0.1 kg

distance, y = 2.1 cm = 0.021 m

Let K be the spring constant.

F = mg = Ky

0.1 x 9.8 = K x 0.021

K = 46.67 N/m

Thus, the spring constant of the spring is 46.67 N/m.

4 0

3 years ago

Read 2 more answers

explain to the guest and learners the procedure and guidelines that are used in making an instrument used to monitor the tempera

Aloiza [94]

In making a thermometer used to monitor the temperature of the water, a glass tube, a scale, and a thermometric liquid such as alcohol is required.

<h3>What is a thermometer?</h3>

A thermometer is an instrument that is used to measure or read the temperature of a body or a substance.

There are different types of thermometers such as:

Liquid-in-glass thermometers
Gas thermometers
Resistance thermometers

A simple liquid-in-glass thermometer consists of the following parts:

A glass tube
A scale
A thermometric liquid such as alcohol

Therefor, in making a thermometer used to monitor the temperature of the water, a glass tube, a scale, and a thermometric liquid such as alcohol is required.

In conclusion, a thermometer is the instrument used in measuring temperature.

Learn more about thermometers at: brainly.com/question/25034625

#SPJ1

3 0

1 year ago