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What forces are acting on a moving skateboard?
The main forces acting on a moving skateboard are friction with the ground, air resistance, and the force applied by the skater to propel the skateboard forward. Additionally, there may be gravitational forces affecting the vertical motion of the skateboard.
When does diode acts as resistance?
When it is forward biased and, in the case of a zener diode, when it is reverse biased as well. It just is not a linear resistance type of device, and the apparent resistance changes as a function of the applied voltage or current.
What is AC forward resistance?
AC forward resistance refers to the effective resistance experienced by an alternating current (AC) signal as it passes through a diode in the forward-bias direction. It is influenced by the diode's intrinsic resistance, as well as the capacitance and inductance of the diode. The AC forward resistance can impact the efficiency and performance of the diode in rectifying AC signals.
In a torsion catapult what are the forces that act upon it?
In a torsion catapult, the main forces that act upon it are the torsional force applied to the twisted rope or spring when it is released, the gravitational force pulling the projectile downward, and air resistance opposing the motion of the projectile through the air. The torsional force causes the arm of the catapult to rotate and launch the projectile forward.
What is the importance of the reverse-to-forward resistance ratio of a diode?
to determine the comparison of resistance value of both forward and reverse diode . The more the resistance the lower the current , the lower the resistance the higher the current . When reverse bias , the resistance is high and it acts in open circuit and the reverse current is very small that can be neglected . When forward bias , the resistance is low and it acts as short circuit and the forward current is increasing as the voltage supply is higher .
Using force diagrams the ways in which air resistance can play an important part in reducing the cyclists speed?
draw a bicycle with an arrow pointing forward (this is the force applied by the cyclist) draw an arrow in the opposite direction this is air resistance the overall force will be equal to the forward force minus the backward (air resistance force) from this it is clear to see that it limits the cyclists speed it may also be worth noting that as the cyclist increases speed so does the the air resistance
Do swim costumes reduce resistance and drag in the water?
resistance created by a fluid to forward motion. The resistance met by a swimmer in their forward progress caused by the water is passive drag;
Compare the sizes of forward force and air resistance while a car is moving at 30mph?
when a car is speeding up how does the forward force and air resistance compare
How physics affects flying?
gravity holds you down wings + forward motion = lift thrust = forward motion air resistance = resistance to forward motion thin air at altitude is easier and cheaper to get through
How does a constant forward force affect motion?
A constant forward force applied to an object will cause it to accelerate in the direction of the force. The object will continue to increase its velocity as long as the force is applied, following Newton's second law, F=ma. However, if other forces, like friction or air resistance, are present, they may act in the opposite direction and counteract the forward force, reducing the acceleration of the object.
The bluk resistance of a diode depends on?
Bulk resistance of diode depends on how it is biased. The bulk resistance of a diode is the approximate resistance of the diode when it is forward biased.
What is the behavior of a forward and reverse biased diode?
Forward Resistance:def: It is resistance offered by diode to the forward bias is known as forward resistance.This resistance is not the same for the flow of DC as for the changing current. Accordingly this resistance is of two types :1. DC FORWARD RESISTANCE.2. AC FORWARD RESISTANCE.1. DC forward resistance: It is the opposition by diode to the DC. It is measured by the ratio of DC voltages across the diode to the resulting DC current through it.2. AC forward resistance: It is the opposition offered by the diode to the changing current. It is measured by the ratio of change in voltage across diodes to the resulting change in current through diode. The AC forward resistance is more significant as the diodes are generally used with alternating voltage.Reverse Resistance:def: The resistance offered by the diode to the reverse bias is known as Reverse Resistance. It can be DC reverse resistance or AC reverse resistance depending upon whether the reverse bias is direct or changing voltage. Idealy the reverse resistance of a diode is infinte however in practice the reverse resistance is not infinite because for any value of reverse bias, there does exist a small leakage current. It may be emphasized their that reverse resistance is very large compared to the forward resistance.These Definitions are from PRINCIPLES OF ELECTRONICS by V.K MEHTA and ROHIT MEHTA
