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Nat2105 [25]
3 years ago
7

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

g to balance gravity, keeping the rock in place?
Chemistry
2 answers:
nexus9112 [7]3 years ago
5 0

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.

mixas84 [53]3 years ago
3 0

Answer: friction

Explanation:

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If all other variables remain unchanged, what happens to the output force when the area of the input piston is doubled?
mars1129 [50]

Answer:

1250N

Explanation:

This question is based on pascal's Law.

So By Pascal's Law

 =  

therefore  =force on input piston =25N

                  = Force or weight on output person.

therefore after putting the values we get,

= (25x 1500)/30

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3 0
3 years ago
HNO3 + H2SO4 + NO
77julia77 [94]

Explanation:

The two half equations are;

3e + HNO3 → NO

S→ H2SO4 + 6e

When balancing half equations, we have to make sure the number of electrons gained is equal to the number of electrons lost.

<em>Which factor will you use for the top equation?</em>

We multiply by 2 to make the number of electrons =  6e

<em>Which factor will you use for the bottom equation?</em>

We multiply by 1 to make the number of electrons = 6e

3 0
2 years ago
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yaroslaw [1]

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8 0
3 years ago
After 20 min, a reactant has decomposed to 85 % of its original concentration. Which order would the reaction need to be to allo
rjkz [21]

Answer : The value of rate constant is, 0.0949\text{ min}^{-1}

Explanation :

First we have to calculate the rate constant, we use the formula :

Expression for rate law for first order kinetics is given by:

k=\frac{2.303}{t}\log\frac{a}{a-x}

where,

k = rate constant  = ?

t = time passed by the sample  = 20 min

a = let initial amount of the reactant  = 100 g

a - x = amount left after decay process = 100 - 85 = 15 g

Now put all the given values in above equation, we get

k=\frac{2.303}{20}\log\frac{100}{15}

k=0.0949\text{ min}^{-1}

Therefore, the value of rate constant is, 0.0949\text{ min}^{-1}

7 0
3 years ago
What geologic processes helped to form gold ore, oil, and aquifers?
kow [346]

No single geologic process did all those things. Gold is an element, a heavy element, so it accumulates in seams of hard rocks, quartz being most common. It accumulates over thousands of year

8 0
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