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Air resistance on an object is also referred to as drag. The equation for drag force on an object takes the following form,
FD = (1/2) CD A ρ v2
where CD is the coefficient of drag for an object of that shape, A is the projected area normal to the direction of air flow, ρ is the air density, and v is the velocity of the air.
The force of drag, or air resistance, is therefore proportional to:
- the projected area of the object
- the density of the air
- the square of the velocity
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Is resistance is directly proportional to charge?
No, resistance is not directly proportional to charge. Resistance is determined by the material, length, and cross-sectional area of a conductor, while charge is a property of matter. The resistance will affect the flow of charge in a circuit, but it is not directly proportional to the charge itself.
Is power directly proportional to resistance?
No, power is not directly proportional to resistance. The power dissipated in a circuit is given by P = I^2 * R, where I is the current flowing through the circuit and R is the resistance. This means that power is proportional to the square of the current but linearly proportional to resistance.
What is the link between air resistance and surface area?
Air resistance is directly proportional to the surface area of an object. As the surface area of an object increases, there is more contact with air molecules, resulting in greater air resistance. This resistance can affect the speed and motion of the object.
Is resistance inversely or directly proportional to temperature?
In most materials, resistance is directly proportional to temperature. This means that as temperature increases, resistance also increases. This relationship is described by the temperature coefficient of resistance, which varies for different materials.
Why parachutists do not fall with constant accelerating motion?
Parachutists do not fall with constant accelerating motion because air resistance increases as their speed increases. Eventually, the force of air resistance balances out with the force of gravity, causing the parachutist to reach a terminal velocity, where they fall at a constant speed.
Is resistance is directly proportional to charge?
No, resistance is not directly proportional to charge. Resistance is determined by the material, length, and cross-sectional area of a conductor, while charge is a property of matter. The resistance will affect the flow of charge in a circuit, but it is not directly proportional to the charge itself.
Is power directly proportional to resistance?
No, power is not directly proportional to resistance. The power dissipated in a circuit is given by P = I^2 * R, where I is the current flowing through the circuit and R is the resistance. This means that power is proportional to the square of the current but linearly proportional to resistance.
The statement that current is directly proportional to voltage and inversely proportional to resistance is known as whose law?
The statement current is directly proportional to voltage and inversely proportional to resistance is known as Ohm's Law.
Do Power is directly proportional to resistance or inversely proportional to resistance?
It is both proportional and inversely propertional to resistance however I am not exactly sure why which is why I am searching Google ATM for answers.
What is the link between air resistance and surface area?
Air resistance is directly proportional to the surface area of an object. As the surface area of an object increases, there is more contact with air molecules, resulting in greater air resistance. This resistance can affect the speed and motion of the object.
How are current and resistance related are they directly proprtional or inversely proportional?
inversely proportional
Is resistance inversely or directly proportional to temperature?
In most materials, resistance is directly proportional to temperature. This means that as temperature increases, resistance also increases. This relationship is described by the temperature coefficient of resistance, which varies for different materials.
Why current is directly proportional to voltage?
Ohm's Law: Current = Voltage times resistance, hence current is directly proportional to voltage.
Why parachutists do not fall with constant accelerating motion?
Parachutists do not fall with constant accelerating motion because air resistance increases as their speed increases. Eventually, the force of air resistance balances out with the force of gravity, causing the parachutist to reach a terminal velocity, where they fall at a constant speed.
Is the current directly proportional to the change in temp?
Yes, in some materials, the current flowing through them is directly proportional to the change in temperature. This relationship is known as the temperature coefficient of resistance.
Which variable is inversely proportional to the resistance?
Inversely proportional to resistance is the current (I) in a circuit, as per Ohm's law: V = I * R, where V is voltage, I is current, and R is resistance. When resistance increases, current decreases, and vice versa.
Is potential difference directly or inversely proportional to resistance?
Potential difference is directly proportional to resistance according to Ohm's Law. This means that as resistance increases, the potential difference across a component also increases, assuming the current remains constant.
