Ask question

Ask question

All categories

4 years ago

8

Pressing two objects together with more force ______ friction.

2 answers:

Artyom0805 [142]4 years ago

8 0

A is your answer and the other choices are wrong ...

G..

Alenkinab [10]4 years ago

5 0

Answer : Option A) Increases.

Explanation : Pressing two objects together with more force will increase the friction.

Friction is defined as the resistance to motion of an object which is relative to another.

If the forces acting between the two objects are found to be vertical then they will have an effect of increased friction as they increase the weight.

When forces are assumed to be horizontal then, the result of weight gets multiplied by the coefficient of friction which will result in having no effect on the friction.

You might be interested in

A coffee cup calorimeter is prepared, containing 100.000 g of water (specific heat capacity = 4.184 J/g K) at initial temperatur

BARSIC [14]

Answer : The molar heat of solution for the salt is 452.9 kJ/mole

Explanation :

First we have to calculate the heat of solution.

$q=m\times c\times \Delta T$

where,

q = heat of solution = ?

c = specific heat of water = specific heat of solution = $4.184J/g.K=4.184J/g^oC$

m = mass of solution = 107.093 g

Mass of solution = Mass of water + Mass of salt
Mass of solution = 100.000 g + 7.093 g = 107.093 g

$\Delta T$ = change in temperature = $T_2-T_1=(80.000-61.128)=18.872^oC=$

Now put all the given values in the above formula, we get:

$q=107.093g\times 4.184J/g^oC\times 18.872^oC$

$q=8456.111J=8.456kJ$

Now we have to calculate the molar heat of solution for the salt, in kJ/mol.

$\Delta H=\frac{q}{n}$

where,

$\Delta H$ = molar heat of solution = ?

q = heat required = 8.456 kJ

m = mass of salt = 7.093 g

Molar mass of salt = 379.984 g/mol

$\text{Moles of salt}=\frac{\text{Mass of salt}}{\text{Molar mass of salt}}=\frac{7.093g}{379.984g/mole}=0.01867mole$

$\Delta H=\frac{8.456kJ}{0.01867mole}=452.9kJ/mole$

Therefore, the molar heat of solution for the salt is 452.9 kJ/mole

4 0

3 years ago

The electronegativity of nonmetals is relatively __________ as compared to the electronegativity of metals.

solniwko [45]

Higher

Electronegativity generally increases from the left of the P.T.(metals) to the right (nonmetals).

7 0

3 years ago

Which of the following tools is used to mark the spot where a hole is to be drilled in a piece of metal?

Oxana [17]

That's a job for a center-punch.

3 0

4 years ago

Read 2 more answers

All of the following are very helpful when identifying evidence of past living plants except

m_a_m_a [10]

JAYLA OTHER KIDS ANSWER OUR QUESTIONS DID YOU KNOW THAT BESTFRIEND

4 0

4 years ago

A force f = bx 3 acts in the x direction, where the value of b is 3.7 n/m3. how much work is done by this force in moving an obj

Elodia [21]

The answer would be 21.6 but rounded up it would be 22J.

8 0

3 years ago