Ask question

Ask question

All categories

chubhunter [2.5K]

3 years ago

6

When the area over which pressure is applied is increased,

1 answer:

Tema [17]3 years ago

3 0

Answer:

A. the pressure decrease

Explanation:

pressure decreases when the surface area over which a force is applied increases. pressure increases when the surface area over which force is applied decreases.

You might be interested in

In 10 seconds a car accelerates 4m/s^2 to 50

DanielleElmas [232]

Answer:

10m/s

Explanation:

using the formula a=v-u

t

4 0

2 years ago

Please help me<br> the formula is E = P x t

Rainbow [258]

The battery doesn't 'use' power. The battery <em>produces</em> the power that all the other electrical devices use.

If the starter motor is using 2,520 watts, then the battery is producing energy at the rate of 2,520 watts. That means <em>2,520 Joules</em> of energy every second.

Thanks for giving us the formula.

E = P x t

Energy = Power x Time

Energy = (2,520 watts) x (1 second)

Energy = 2,520 Joules

6 0

3 years ago

imagine that 501 people are present in a movie theater of volume 8.00 x10^3 that is sealed shut so no air can escape. Each perso

Semenov [28]

Answer:

The temperature of air will increase by $\Delta T=41044.967\ K$

Explanation:

Given:

no. of person in a theater, $n=501$

volume of air in the theater, $V=8\times 10^3\ m^3$

rate of heat given off by each person, $P=110\ J.s^{-1}$

duration of movie, $t=2\ hr=7200\ s$

initial pressure in the theater, $p_i=1.01\times 10^5\ Pa$

initial temperature in the theater, $T_i=20+273=293\ K$

specific heat capacity of air at the given conditions, $c=1.0061\ J.kg^{-1}.K^{-1}$

<u>The total quantity of heat released by the total people in the theater during the movie:</u>

$Q=n.P.t$

$Q=501\times 110\times 7200$

$Q=396792000\ J$

<u>Form the relation of heat capacity:</u>

$Q=m.c.\Delta T$

∵ $p_i.V=m.R.T$

$Q=(\frac{p_i.V}{R.T}) \times c\times (T_f-T_i)$

$396792000=(\frac{1.01\times 10^5\times 8\times 10^3}{287\times 293}) \times 1.0061\times (T_f-293)$

$T_f=41337.967\ K$

Change in temperature of air:

$\Delta T=41044.967\ K$

8 0

3 years ago

What property of a solid would be most important if you were calculating how much paint was required to cover it?

Nadusha1986 [10]

Define shape and volume

Because: The area of the shape is how much paint would cover the object

6 0

3 years ago

It takes 25N or force to drag a box along the floor at a constant speed. If the coefficient of friction is .3, what is the mass

Nataliya [291]

The mass of the box is 8.5 kg.

<h3>What is mass?</h3>

Mass can be defined as the quantity of matter contained in a body.

To calculate the mass of the box, we use the formula

Formula:

F = mgμ............. Equation 1

Where:

F = Force
m = mass of the box
g = acceleration due to gravity
μ = coefficient of friction

Make m the subject of the equation

m = F/gμ..................... Equation 2

From the question,

Given:

F = 25 N
g = 9.8 m/s²
μ = 0.3

Substitute these values into equation 2

m = 25/(0.3×9.8)
m = 25/2.94
m = 8.5 kg

Hence, the mass of the box is 8.5 kg.

Learn more about mass here: brainly.com/question/26150306

#SPJ1

6 0

2 years ago