p = **pressure**. p = momentum. π = 3.14. Pa = pascal (pressure)

Contents

- 1 What does P mean in physics?
- 2 What does ρ mean in physics?
- 3 What is the meaning of p in momentum?
- 4 What does P stand for in physics electricity?
- 5 What does D in physics stand for?
- 6 What does V mean in P MV?
- 7 What does P mean in Greek?
- 8 What is U in physics class 9?
- 9 Why is P the letter for momentum?
- 10 Why is J used for impulse?
- 11 What does R stand for in physics electricity?
- 12 What is current formula?
- 13 What is the formula for calculating P power?

## What does P mean in physics?

Momentum is a measurement of mass in motion: how much mass is in how much motion. It is usually given the symbol p. The useful thing about momentum is its relationship to force.

## What does ρ mean in physics?

ρ = density in g/cm ^{3}. The symbol for density is the Greek letter rho,. m = mass in g. v = volume in cm ^{3}.

## What is the meaning of p in momentum?

The momentum of a particle is conventionally represented by the letter p. It is the product of two quantities, the particle’s mass (represented by the letter m) and its velocity (v): The unit of momentum is the product of the units of mass and velocity.

## What does P stand for in physics electricity?

Electric power (P) is simply the product of current times voltage. Power has familiar units of watts. Since the SI unit for potential energy (PE) is the joule, power has units of joules per second, or watts. Thus, 1 A ⋅V= 1 W.

## What does D in physics stand for?

“d” means change in the limit that the change is infinitestimal. in your particular exapmle: really means “average” current because that’s total change in charge over total change in time: in fact it means., now when in the limit of very small change. ie.

## What does V mean in P MV?

In symbols, linear momentum p is defined to be p = mv, where m is the mass of the system and v is its velocity. Newton’s second law of motion in terms of momentum states that the net external force equals the change in momentum of a system divided by the time over which it changes.

## What does P mean in Greek?

A common example is the Greek letter Pi, which is a mathematical constant and is used as the ratio of a circle’s circumference to its radius. Pi is commonly shortened to “3.14”

## What is U in physics class 9?

u is initial velocity. v is the final velocity. a is acceleration. t is the time period.

## Why is P the letter for momentum?

In the letter Brown asks why the letter “p” is used for momentum. Clearly, were the letter “m” used, there might well be confusion with mass. The German word for momen- tum is der Impuls [sic] and the French is l’impulsion. For this reason the Germans and French chose “p” for momentum.

## Why is J used for impulse?

The vector quantity for impulse is represented by the letter “J”, and since it’s a change in momentum, its units can be one the same as those for momentum, [kg·m/s], and can also be written as a Newton-second [N·s].

## What does R stand for in physics electricity?

R = resistance. R = molar gas constant.

## What is current formula?

The current formula is given as I = V/R. The SI unit of current is Ampere (Amp).

## What is the formula for calculating P power?

Power P = work / time (W ⁄ t). Energy E is in joules, and time t is in seconds.