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23. A pogo stick has a spring with a force constant of 2.50×104N/m , which can be compressed 12.0 cm. To what maximum height can

tensa zangetsu [6.8K]

Answer:

The maximum height the child can jump on the stick

h=0.459m

Explanation:

Energy conservation

Energy kinetic = Work

The energy the child do get the height jump is proportional at the distance and the consta can be compressed so:

$\frac{1}{2}*k*x^{2} =m*g*h\\k=2.50x10^{4} \frac{N}{m}\\x=12cm*\frac{1m}{100cm}=0.12m\\h=\frac{k*x^{2} }{2*m*g}\\h=\frac{2.50x10^{4}\frac{N}{m}*(0.12m)^{2} }{2*40kg*9.8\frac{m}{s^{2}}}\\h=\frac{360\frac{N}{m}m^{2} }{784N}\\h=0.459m$

8 0

4 years ago

Factors that affect the light intensity received from a source

Roman55 [17]

Light intensity and distance is interrelated. When the distance changes, the intensity of light changes. This relationship is called inverse-square relationship. The inverse-square relationship refers to the fact that when distance changes, light intensity also changes: inverse because when distance decreases, light density increases and when distance increases, the latter decreases; square refers to the fact that light intensity and distance is not a one-to-one relationship.

6 0

3 years ago

The _______ is a factor that's affected by changes in the independent variable. A. dependent variable B. hypothesis C. experimen

Irina18 [472]

A. dependent variable

As the the independent variable (i.e. number of cats being sold) increases, the dependent variable (i.e. money made) will also increase. You can have 1,000,000 cats for sale and make no money, but you cannot make money without having sold some cats first.
Hope my weird example helped!

7 0

3 years ago

Read 2 more answers

1. There are 15 boys and girls 25 in Grade VI- Jacinto . Name the ratio of girls to boys in

Tema [17]

The answer would be B

7 0

3 years ago

Read 2 more answers

Which compound uses the oxidation numbers to write the chemical formula?

pantera1 [17]

Inorganic chemical compounds

Explanation:

Inorganic chemical compounds employ the use of oxidation numbers of atoms to write their chemical formula.

The oxidation number is the formal charge assigned assigned to an atom present in a molecule or formula unit or ion based on some rules.
Knowledge of this number is used in writing the formulae of inorganic compounds.
These compounds forms by the exchange of certain small whole numbers by atoms or groups of atoms.
The combining power usually correspond to the number of electrons usually lost or gained or shared by atoms of elements during chemical combinations or the number of positive or negative charges carried by ions.

For example:

A B

combining power(Valency): X Y

Exchange of valencies Y X

Molecular formula of compound A $_{y}$ Bₓ

Learn more:

Compounds brainly.com/question/5961886

#learnwithbrainly

5 0

3 years ago