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How do you calculate Average Power using energy?

Determine the change in energy ( $\Delta E$ ). 2. Determine the change in time ( $\Delta t$ ). 3. Divide the change in energy by the change in time: $P_{avg} = \frac{\Delta E}{\Delta t}$ .

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How do you calculate Average Power using energy?

Determine the change in energy ( $\Delta E$ ). 2. Determine the change in time ( $\Delta t$ ). 3. Divide the change in energy by the change in time: $P_{avg} = \frac{\Delta E}{\Delta t}$ .

How do you calculate Average Power using work?

Determine the work done (W). 2. Determine the change in time ( $\Delta t$ ). 3. Divide the work done by the change in time: $P_{avg} = \frac{W}{\Delta t}$ .

How do you calculate Instantaneous Power?

Determine the force (F) acting on the object. 2. Determine the velocity (v) of the object at that instant. 3. Determine the angle ( $\theta$ ) between the force and velocity vectors. 4. Calculate: $P_{inst} = Fv \cos \theta$ .

What is the effect of increasing the force applied to an object, assuming constant velocity?

Increased instantaneous power.

What happens if the angle between force and velocity is 90 degrees?

Instantaneous power is zero because $cos(90^\circ) = 0$ .

What is the effect of increasing the time interval over which work is done, assuming constant work?

Decreased average power.

What happens when energy is transferred more quickly?

The power increases.

What happens when work is done in a shorter amount of time?

The power increases.

What is the definition of Power?

The rate at which energy is transferred or transformed.

What is the definition of Average Power?

The average rate at which energy is transferred or converted over a time interval.

What is the definition of Instantaneous Power?

The power at a specific moment in time.

Define Work in Physics.

Energy transferred by a force acting over a distance.

What is a Watt?

The SI unit of power, equivalent to one joule per second (1 W = 1 J/s).

All Flashcards

How do you calculate Average Power using energy?

Determine the change in energy ( $\Delta E$ ). 2. Determine the change in time ( $\Delta t$ ). 3. Divide the change in energy by the change in time: $P_{avg} = \frac{\Delta E}{\Delta t}$ .

How do you calculate Average Power using work?

Determine the work done (W). 2. Determine the change in time ( $\Delta t$ ). 3. Divide the work done by the change in time: $P_{avg} = \frac{W}{\Delta t}$ .

How do you calculate Instantaneous Power?

Determine the force (F) acting on the object. 2. Determine the velocity (v) of the object at that instant. 3. Determine the angle ( $\theta$ ) between the force and velocity vectors. 4. Calculate: $P_{inst} = Fv \cos \theta$ .

What is the effect of increasing the force applied to an object, assuming constant velocity?

Increased instantaneous power.

What happens if the angle between force and velocity is 90 degrees?

Instantaneous power is zero because $cos(90^\circ) = 0$ .

What is the effect of increasing the time interval over which work is done, assuming constant work?

Decreased average power.

What happens when energy is transferred more quickly?

The power increases.

What happens when work is done in a shorter amount of time?

The power increases.

What is the definition of Power?

The rate at which energy is transferred or transformed.

What is the definition of Average Power?

The average rate at which energy is transferred or converted over a time interval.

What is the definition of Instantaneous Power?

The power at a specific moment in time.

Define Work in Physics.

Energy transferred by a force acting over a distance.

What is a Watt?

The SI unit of power, equivalent to one joule per second (1 W = 1 J/s).