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4 years ago

Explain how the applied force and area which the force acts affect the pressure

Physics

1 answer:

Leto [7]4 years ago

4 0

If a force is applied over a smaller surface area you get a larger pressure

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Suppose two children push horizontally, but in exactly opposite directions, on a wagon containing a third child. The first child

koban [17]

Answer:

$0.1 m/s^2$ , in the direction of F2

Explanation:

The magnitude of F2 is larger than that of F1: this means that the wagon will tend to move in the direction of F2. Therefore, the direction of friction will be opposite to the direction of motion, therefore in the direction of F1.

Let's now take the direction of the force exerted by the second child, F2, as positive direction. Then the direction of F1 and of the force of friction ( $F_f$ ) will be negative: so we have

$F_2 = +90.0 N\\F_1 = -75.0 N\\F_f = -12.0 N$

We can write the equation of the forces for the third child+wagon:

$F_1+F_2+F_f = ma$

where

m = 30.0 kg is the combined mass of the child + the wagon

Now we can solve the equation for a, to find the acceleration:

$a=\frac{F_2+F_1+F_f}{m}=\frac{90-75-12}{30}=0.1 m/s^2$

4 0

3 years ago

Describe where each subatomic particle is found in an atom.

Anestetic [448]

Answer:

In the nucleus

Explanation:

You find it in the nucleus. This is where protons and neutrons are. Don't forget the quarks as well ;)

3 0

3 years ago

Read 2 more answers

According to the second law of thermodynamics, what is true of entropy in all natural systems?

N76 [4]

The second law of thermodynamics states that the total entropy of an isolated system can never decrease over time. The total entropy can remain constant in ideal cases where the system is in a steady state (equilibrium). For your natural system the correct ansver is B.It will always increase

5 0

4 years ago

Titanium is a metal used to make golf clubs. A rectangular bar of this metal measuring 1.96 cm x 2.19 cm x 2.63 cm was found to

masha68 [24]

$4.012\frac{gr}{cm^3}$

Explanation

the density of an object is given by:

$\text{Density(d)}=\frac{mass(m)}{\text{volume(v)}}$

Step 1

find the volume of the bar

a)find the volume of the rectangular bar.

the volume of a rectangular prism is given by:

$\text{Volume}=\text{ length}\cdot widht\cdot depth$

replace

$\begin{gathered} \text{Volume}=(\text{ 2.63}\cdot2.19\cdot1.96)(cm^3) \\ \text{Volume}=11.289012(cm^3) \end{gathered}$

Step 2

now,

Let

$\begin{gathered} \text{Volume}=11.289012(cm^3) \\ \text{mass}=\text{ 45.3 gr} \end{gathered}$

replace in the formula

$\begin{gathered} \text{Density(d)}=\frac{mass(m)}{\text{volume(v)}} \\ d=\frac{45.3\text{ gr}}{11.289012(cm^3)} \\ d=4.012\frac{gr}{cm^3} \end{gathered}$

therefore, the answer is

$4.012\frac{gr}{cm^3}$

I hope this helps you

4 0

2 years ago

A student performs an activity using a sheet of paper, a magnet, and a steel ball. The image shows the setup. The student observ

son4ous [18]

Answer:b

Explanation:

6 0

3 years ago

Read 2 more answers