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Science in Context / Wetenskap in Konteks - 179
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Solve the equation with for . Choose the correct answer.
Los die vergelyking met op vir . Kies die korrekte antwoord.
Solve the equation with for . Choose the correct answer.
Los die vergelyking met op vir . Kies die korrekte antwoord.
When an electric current flows through a heating element with resistance , the heating power that will be produced can be expressed as . If the required power is W and the resistance of the heating element is Ohm, try to calculate the magnitude of the current that is required without using a calculator.
Wanneer 'n elektriese stroom deur 'n verhittingselement met weerstand vloei, kan die verhittingsdrywing wat geproduseer word uitgedruk word as . As die drywing wat vereis word W is en die weerstand van die verhittingselement Ohm is, probeer om die grootte van die stroom wat nodig is te bereken sonder 'n sakrekenaar.
Solve the equation for . Choose the correct solution.
Los die vergelyking op vir . Kies die korrekte antwoord.
We know that when a constant force with magnitude is applied to an object with mass , it will accelerate in the direction of the force with an acceleration and the relation between these quantities is given by . The acceleration of an electron with mass kg can be expressed as a function of the applied force by... (choose the correct expression)
Ons weet dat as 'n konstante krag met grootte uitgeoefen word op 'n voorwerp met massa , sal dit versnel in die rigting van die krag met 'n versnelling en die verband tussen die groothede word gegee deur . Die versnelling van 'n elektron met massa kg kan uitgedruk word as 'n funksie van die uitgeoefende krag as... (kies die korrekte uitdrukking)
If and , the symbolic expression is equal to:
As en , dan is die simboliese uitdrukking gelyk aan:
If and , the symbolic expression is equal to:
As en , dan is die simboliese uitdrukking gelyk aan:
If and , the symbolic expression is equal to:
As and , is die simboliese uitdrukking gelyk aan:
The symbolic expression is equal to:
Die simboliese uitdrukking is gelyk aan:
Solve for and , if the relation between and is described by the following equations:Los op vir en , indien die verband tussen en deur die volgende vergelykings beskryf word:
eqn./vgl. (1) eqn./vgl. (2)