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4 years ago

What is frictional force?

Physics

2 answers:

s2008m [1.1K]4 years ago

8 0

Answer:

force that comes in contact with another object

Explanation:

basically rubbing your socks on the floor and then electrocuting someone

goldenfox [79]4 years ago

3 0

Answer:Frictional Force refers to the force generated by two surfaces that contacts and slides against each other. These forces are mainly affected by the surface texture and amount of force impelling them together. The angle and position of the object affect the amount of frictional force.

Force that opposes a motion of a body in opposite direction

Friction is a force that is created whenever two surfaces move or try to move across each other. Friction always opposes the motion or attempted motion of one surface across another surface. Friction is dependant on the texture of both surfaces.

To stop a moving object, a force must act in the direction opposite to that of the motion. Friction is a force that opposes the motion of an object. There are different types of friction, such as static, fluid and rolling friction

Explanation:

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Who wants to do my missing physics work

kotegsom [21]

Answer:

<h2>WHAT IF I HATE PHYSICS ?</h2>

4 0

3 years ago

5. A student is investigating the relationship between pressure,

sergey [27]

Answer:

The <u>water vapor</u> will have the greatest entropy at the triple point

Explanation:

At the triple point of water, which has the properties of 0.0075°C temperature and 6.11657 mbar pressure, solid ice, liquid water and water vapor exist together in a location

According to Professor Stephen Lower on LibreTexts website entropy is a measure the extent to which thermal energy is shared and spread in a system

The change in entropy, ΔS = ΔH/T

The heat change in $\Delta H_{melting}$ = 6.01 kJ/mol

The heat change in vaporization, $\Delta H_{vaporization}$ = 45.05 kJ/mol

The heat change in sublimation, $\Delta H_{sublimation}$ = 51.06 kJ/mol

Therefore, the entropy of the water vapor $S_{water \ vapor}}$ > The entropy of liquid water, $S_{Liquid \ water}$ > The entropy of the solid ice, $S_{Solid \, ice}$

The portion with the highest entropy at the triple point is the water vapor

The water vapor will have the greatest entropy at the triple point

4 0

3 years ago

If two balls collide with each other, they will move apart at the same speed if

denis-greek [22]

A.
if you have seen a newton's cradle this will make sense.

in order for both of them to travel at the same speed, the balls need to have the same mass and the speed to begin with tocontinue to travel at the same speed because mass can affect the impact of the force on the balls by each other, causing each ball to have different speeds.

7 0

4 years ago

Read 2 more answers

Exactly how fast would the average human have to run in order to actually ran across water without breaking surface tension? Thi

Mila [183]

Answer:

It wouldn't work no matter how fat a person runs

Explanation:

The reason for this is because of the weight of a human and that a human can't possibly get to that kind of speed.

7 0

3 years ago

Read 2 more answers

A two-resistor voltage divider employing a 2-k? and a 3-k? resistor is connected to a 5-V ground-referenced power supply to prov

vesna_86 [32]

Answer:

circuit sketched in first attached image.

Second attached image is for calculating the equivalent output resistance

Explanation:

For calculating the output voltage with regarding the first image.

$Vout = Vin \frac{R_{2}}{R_{2}+R_{1}}$

$Vout = 5 \frac{2000}{5000}[/[tex][tex]Vout = 5 \frac{2000}{5000}\\Vout = 5 \frac{2}{5} = 2 V$

For the calculus of the equivalent output resistance we apply thevenin, the voltage source is short and current sources are open circuit, resulting in the second image.

so.

$R_{out} = R_{2} || R_{1}\\R_{out} = 2000||3000 = \frac{2000*3000}{2000+3000} = 1200$

Taking into account the %5 tolerance, with the minimal bound for Voltage and resistance.

if the -5% is applied to both resistors the Voltage is still 5V because the quotient has 5% / 5% so it cancels. to be more logic it applies the 5% just to one resistor, the resistor in this case we choose 2k but the essential is to show that the resistors usually don't have the same value. applying to the 2k resistor we have:

$Vout = 5 \frac{1900}{4900}\\Vout = 5 \frac{19}{49} = 1.93 V$