# What is the difference between momentum and torque?

Momentum is the product of mass and velocity p=mv. Torque is vector energy T=fxd=fdsin(fd), the vector analogy of scalar energy, work W=f.d= -fdcos(fd).

### Why is a neutrino released during positron emission?

To preserve the conservation of; energy, momentum, and angular momentum in beta plus decay. Without the neutrino there is a measurable difference between the energy, momentum, and angular momentum of the initial and final particle. The neutrino rectifies this difference and it's existence was actually postulated before it was ever discovered!

### What is the difference between electromagnetic torque and load torque in electrical machines?

Electromagnetic torque and load torque are different.Electromagnetic torque is the torque that is produced inside the machine which makes the machine rotate,while load torque is the torque that is applied externally with brake drum and and spring balance.Electromagnetic torque can be varied by varying the speed of the machine,but load torque is fixed.

### How do you change an objects momentum?

Momentum is of two kind. One is linear momentum and the other is angular momentum. Linear momentum is defined as the product of the mass and the velocity. Hence a vector quantity. To change the momentum of a given body with its mass constant, its velocity is to be changed. Velocity change could be made by changing its magnitude or direction or both. Angular momentum is the product of moment of inertial and the angular…

### What is the difference between velocity and momontum?

Well, picture this: A canoe moving east through the water at 3 miles per hour hits the pier, and bounces off of it. About an hour later, a battleship moving east through the water at 3 miles per hour hits the pier, keeps right on going, and demolishes the entire pier. What's the difference ? Both craft had the same velocity ... 3 miles per hour eastward. But each one had different momentum. The difference…

### What is the difference between zero momentum and momentum bias spacecraft?

When the spacecraft is an equilibrium state, if the spacecraft has a momentum for specific axis, then the control of spacecraft is designed to momentum bias method. if else, it is called a zero momentum spacecraft. Zero momentum spacecraft: a spacecraft has four reaction wheel which is installed to pyramid configuration. if1st and 3rd reaction wheel is running to a 500 rpm and 2nd and 4th reaction wheel is running to a 500 rpm, them…