Download How to set up formula I

How to set up formulas I
A scientist wants to know a formula for a physical quantity named „E“.
He/She conducts experiments and finds out:
- if you increase the mass of the object (m), E increases too.
- if you decrease the height of the object (h), E decreases too.
Which of the quantities m and h are (in)directly proportional to E? What would the formula be?
Begin with E =...
How to set up formulas II
A scientist wants to know a formula for a physical quantity named „P“.
He/She conducts experiments and finds out:
- if you increase the energy (E), P increases too.
- if you increase the time interval (t), P decreases.
Which of the quantities E and t are (in)directly proportional to P? What would the formula be?
Begin with P =...
How to set up formulas III
A scientist wants to know a formula for a physical quantity named „s“.
He/She conducts experiments and finds out:
- if you increase the speed (v), s increases too.
- if you increase the time interval (t), s increases too.
What would the formula be? Begin with s =...
How to interpret formulas I
In a book you find a formula for a physical quantity named v. It says:
v = s/t
What happens to v, if you increase s ? What happens to v, if you increase t ?
Which of these quantities are (in)directly proportional to v?
How to interpret formulas II
In a book you find a formula for a physical quantity named B. It says:
B = a · w/c
What happens to B, if you increase a ? What happens to B, if you increase w ?
What happens to B, if you increase c ? Which of these quantities are (in)directly proportional to
B?
How to interpret formulas III
In a book you find a formula for a physical quantity named M. It says:
M= r·g
What happens to M, if you increase r ? What happens to M, if you increase g ?
Which of these quantities are (in)directly proportional to M?
Applying Ohm's Law I
In a closed circuit supplied by a 9V-battery, there is a bulb with a resistance of 2Ω.
What would be the reading on the ammeter?
Applying Ohm's Law II
In a closed circuit supplied by a 12V-battery the ammeter shows a current of 100mA.
What is the resistance of the components in the circuit?
Applying Ohm's Law III
In a closed circuit with a total resistance of 400Ω, the current is 200mA.
What is the voltage of the battery?