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3 years ago

A example of using a muscular strength?

Physics

2 answers:

DIA [1.3K]3 years ago

7 0

An example of using muscular strength would be doing things like lifting weights and things like that.

Alika [10]3 years ago

5 0

An example of using muscular strength would be lifting a heavy object, such as a weight or gallon of milk.

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Please help!!!!!!!!!!

svlad2 [7]

Answer:

the line b aka the option d

Explanation:

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3 years ago

On a vacation flight, you look out the window of the jet and wonder about the forces exerted on the window. Suppose the air outs

Anettt [7]

Answer:

The pressure difference is 25.8kPa while the force exerted on the window by air pressure is 3.02 kN

Explanation:

Using the Bernoulli's equation

$P_{in}+\frac{1}{2}\rho v_{in}^2=P_{out}+\frac{1}{2}\rho v_{out}^2$

Here

Pin-Pout is the pressure difference which is to be calculated.

ρ is the density of air whose value is 1.29 kg/m^3

vin is the velocity of air inside which is 0 m/s

vout is the velocity of air outside which is 200 m/s

Substituting values in the above equation yields

$\Delta P=P_{in}-P_{out}\\\Delta P=\frac{1}{2}\rho (v_{in}^2-v_{out}^2)\\\Delta P=\frac{1}{2}\times 1.29 ( 200^2-0)\\\Delta P=25.8 kPa$

So the pressure difference is 25.8kPa.

As force is given by

$F=PA\\F=\Delta P A\\$

Here

ΔP is the pressure difference calculated above
A is the area of the window given as

$A=L \times W\\A=0.26 \times 0.45\\A=0.117 m^2$

Now force is

$F=\Delta P A\\F=25.8 \tiems 10^3 \times 0.117\\F=3.02 kN$

So the force exerted on the window by air pressure is 3.02 kN

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3 years ago

It is a way to display to number of ________ for elements. This chart will show the correlation between ______ number and the nu

pav-90 [236]

Answer:

Electrons

Atomic number

Explanation:

The question describes a period table which is a chart of the elements.

The Periodic Table of elements shows the arrangement of elements based on their increasing atomic number.

In a neutral atom, the number of electrons will equal the number of protons, so we can easily determine electron number from atomic number. In addition, the position of an element in the periodic table—its column, or group, and row, or period—provides useful information about how those electrons are arranged (electronic configuration) in their different shells.

It is a way to display to number of ____electrons____ for elements. This chart will show the correlation between __atomic____ number and the number of valence electrons

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4 years ago

I need help with science:

Degger [83]

I pretty sure number 3 is false

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3 years ago

A dumbbell consists of two point-like masses M connected by a massless rod of length 2L. There are no external forces. If the du

Oksi-84 [34.3K]

Answer:

Explanation:

The rotational kinetic energy of the dumbbell is: