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4 years ago

How is pressure measured?

Physics

2 answers:

Papessa [141]4 years ago

4 0

Pressured is measured by the Force per unit area

GuDViN [60]4 years ago

4 0

Answer: The correct answer is " Pressure is measured as force per unit area".

Explanation:

Pressure is defined as the force per unit area.

The expression for the pressure is as follows:

$P=\frac{F}{A}$

Here, F is the applied force and A is the area.

The pressure is inversely proportional to the area. More the area, lesser will be the pressure. Lesser the area, more will be pressure.

For example, the area of the strap of the school bag is more so that there will be less pressure on the students's shoulder.

Therefore, the correct option is (c).

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A ball with a horizontal speed of 1.0m/s rolls off a bench 2.0 m high. (a) how long will the ball take to reach the floor? (b) h

bixtya [17]

The motion of the ball is a composition of two motions:
- on the x (horizontal) axis, it is a uniform motion with initial velocity $v_x = 1.0 m/s$
- on the y (vertical) axis, it is a uniformly accelerated motion with acceleration $g= 9.81 m/s^2$

(a) to solve this part, we just analyze the motion on the vertical axis. The law of motion here is
$y(t) = h - \frac{1}{2} gt^2$
By requiring y(t)=0, we find the time t at which the ball reaches the floor:
$h- \frac{1}{2}gt^2=0$
$t= \sqrt{ \frac{2h}{g} }= \sqrt{ \frac{2\cdot 2.0 m}{9.81 m/s^2} }=0.64 s$

(b) for this part, we can analyze only the motion on the horizontal axis. To find how far the ball will land, we must calculate the distance covered on the x-axis, x(t), when the ball reaches the ground (so, after a time t=0.64 s):
$x(t) = v_x t = (1.0 m/s)(0.64 s)=0.64 m$

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4 years ago

How does distance between two objects affect their gravitational force?

EastWind [94]

Force decreases as distance increases

5 0

3 years ago

Read 2 more answers

What are two deposit s made by water

Alexandra [31]

Sinkholes and caves are 2 reasons. hope that helped

3 0

3 years ago

(Fill the blank) the ________ g____ makes saliva that make your food wet and easy to swallow

blagie [28]

Answer:

What make saliva that make your food wet and easy to swallow?

enzyme amylase

Explanation:

The digestive functions of saliva include moistening food, and helping to create a food bolus, so it can be swallowed easily. Saliva contains the enzyme amylase that breaks some starches down into maltose and dextrin. Thus, digestion of food occurs within the mouth, even before food reaches the stomach.

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Yan na baby

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3 years ago

The specific weight of sea water is 10.1 kN/m^3. Convert to lbs/in^3.

Viktor [21]

Answer:

0.03719 lbs/in³

Explanation:

Specific weight is given by multiplying the density of an object to the acceleration due to gravity.

$\gamma =\rho g\\\Rightarrow \rho=\frac{gamma}{g}\\\Rightarrow \rho=\frac{10.1\times 10^3}{9.81}\\\Rightarrow \rho=1029.562\ kg/m^3$