In a college there are exactly 3000 students, exactly 60% are male. What is the number of female students

Look at the rock sitting on the hill in the picture above. Gravity should make the rock slide down the hill. What force is actin

nexus9112 [7]

I believe the answer you are looking for is Static Friction. Static Friction is the force that holds an object in place until it starts to move. Then it switches to rolling friction.

For example, if you have a 1/2 ton truck sitting in front of you and the truck is in neutral. (meaning it can roll if pushed). The truck is extremely hard to move at first. That is because static friction is holding it in place until the amount of force exceeds the limit of static friction.

So if we continue to push at the truck and you feel it starting to move, then once it starts moving it is much easier to push, that is because we moved past static friction to rolling friction. Rolling friction is what helps slow things down. If you roll a ball across a carpet floor it eventually comes to a stop.

5 0

3 years ago

Read 2 more answers

Flowers usually contain more stamen than pistils. Why do you think this is ?

Gemiola [76]

What kind of question is this

8 0

3 years ago

A solution is formed by mixing 0.400 mol NaOH

leonid [27]

Answer:

The correct answer is m= mol solute kg soivent

Explanation:

Molality is a measure of concentration, which indicates the moles of solute (in this case sodium hydroxide) in 1kg of solvent .

In this case:

0,800 kg water-----0,400 mol NaOH

1 ,000 kg water ---x=(1 ,000 kg water x 0,400 mol NaOH)/0,800 kg water

x=0,5 mol NaOH---> <em>The solution is 0,5 molal (0,5 m)</em>

6 0

4 years ago

Which has more particles? 10.0 g of Carbon or 10.0 g Calcium? How many atoms does each have?

Snezhnost [94]

Answer:

10g Carbon has more particles.

Explanation:

To Find

Which has more particles 10g of C or 10g of Ca

The molar mass of carbon is 12g and Calcium is 40g.

1 mole of atom , molecule or ions contain Avagadro number (6.022×10∧23) of particles and also have a mass equal to it's molar mass.

For C,

12g C will have 6.022×10∧23 atoms

10g C will have $\frac{10}{12}$ ×6.022×10∧23 atoms

=0.833 × 10∧23 atoms

For Ca,

1 mole Ca =40g

40g Ca will have 6.022×10∧23 atoms

10g Ca will have $\frac{10}{40}$ ×6.022×10∧23 atoms

=0.25 × 6.022×10∧23 atoms

7 0

4 years ago

the average single and double n-o bond lengths are 136 pm and 122 pm, respectively. assuming these two structures were to make e

uranmaximum [27]

Resonance structures show that chemical species have equal bond lengths and bond angles when in resonance. The bond lengths of the N - O bond in HNO2 is 126pm.

Linus Pauling introduced the idea of resonance to explain the nature of bonding in compounds and ions where a single Lewis structure can not satisfactorily account for the observed properties of the chemical species.

If the two structures are resonance structures, they will have equal N - O bond lengths and bond angles. The bond length will be intermediate between that of a pure N - O single and N - O double bond. The actual N- O bond lengths in HNO2 are obtained as; 136 pm - 122 pm/2 = 126 pm.

Learn more: brainly.com/question/8155254

6 0

2 years ago