Ask question

Ask question

All categories

3 years ago

14

Atmospheric pressure is about 1.00 × 105 Pa on average. What is the downward force of the air on a desktop with surface area 1.6

0 m2? -------N

1 answer:

arsen [322]3 years ago

6 0

Answer:

$1.60*10^{5} N$

Explanation:

$1.00 * 10^{5} Pa = 1.00 * 10^{5} \frac{N}{m^{2} }$

$1.00 * 10^{5} \frac{N}{m^{2} } * 1.60 m^{2} =1.60*10^{5} N$

You might be interested in

A jogger jogs around a circular track with a diameter of 275 m in 14.0 minutes. what was the jogger's average speed in m/s?

Pie

The jogger's average speed 1.03 m/s

<h3>The Speed and the Velocity of a Particle in a Circle</h3>

The speed of a particle is a circle will always be constant while the velocity will not. That is, velocity varies.

Given that a jogger jogs around a circular track with a diameter of 275 m in 14.0 minutes. First convert the minutes to seconds

Given parameters are;

Diameter = 275 m

Radius r = D/2 = 137.5 m

Time t = 14 minutes = 14 x 60s = 840 s

Speed V = 2πr ÷ t

V = ( 2 × π × 137.5 ) ÷ 840

V = 863.9 / 840

V = 1.028 m/s

Therefore, the jogger's average speed 1.03 m/s approximately

Learn more about Circular Motion here: brainly.com/question/20905151

#SPJ1

5 0

2 years ago

Plz answer i need it rn ASAP ASAP

Alenkasestr [34]

Is this science??? What subject is that??

4 0

4 years ago

Read 2 more answers

A 12.5843-gram sample of metal bromide, MBr4, was dissolved and, after reaction with silver nitrate, AgNO3, all of the bromide w

barxatty [35]

Answer:

zirconium

Explanation:

Given, Mass of AgBr(s) = 23.0052 g

Molar mass of AgBr(s) = 187.77 g/mol

The formula for the calculation of moles is shown below:

$Moles = \frac{Mass\ taken}{Molar\ mass}$

Thus,

$Moles\ of\ AgBr= \frac{23.0052\ g}{187.77\ g/mol}$

$Moles\ of\ AgBr= 0.1225\ mol$

The reaction taking place is:

$MBr_4+4AgNO_3\rightarrow 4AgBr+M(NO_3)__4$

From the reaction,

4 moles of AgBr is produced when 1 mole of $MBr_4$ undergoes reaction

1 mole of AgBr is produced when 1 / 4 mole of $MBr_4$ undergoes reaction

0.1225 mole of AgBr is produced when $\frac {1}{4}\times 0.1225$ mole of $MBr_4$ undergoes reaction

Moles of $MBr_4$ got reacted = 0.030625 moles

Mass of the sample taken = 12.5843 g

Let the molar mass of the metal = x g/mol

So, Molar mass of $MBr_4$ = x + 4 × 79.904 g/mol = 319.616 + x g/mol

Thus,

$0.030625 = \frac{12.5843}{319.616 + x}$

Solve for x,

we get, x = 91.2999 g/mol

<u>The metal shows +4 oxidation state and has mass of 91.2999 g/mol . The metals is zirconium.</u>

8 0

3 years ago

Which of the following is a constant force?

Kaylis [27]

Answer:

Gravitational force

Explanation:

gravity is what keeps us down on earth so we don`t float away into space and it is constant it does it 24/7 365 days a year and the remaining time earth continues to survive

4 0

3 years ago

Read 2 more answers

A boy is running with a kinetic energy of 810 j if the boy has a mass of 80 kg whats his speed?

n200080 [17]

If the boy started at rest then its speed would be equal to 4.5 m/s squared.

8 0

4 years ago

Read 2 more answers