We use Padmabhan's "Invitation to Astrophysics" formalism of a scalar field evolution of the early universe, from first principles, to show something which seems counter intuitive. How could, just before inflation, kinetic energy be larger than potential energy in pre-Planckian physics, and what...
Find the change in kinetic energy of a disk that receives a constant force of 18.6 N as it travels a distance of 0.150 m. A 1,470 kg car is traveling at 25 m/s. The brakes are suddenly applied and the car slides to a stop. The braking force between the tires and...
How do you find time and velocity in momentum with only force and mass? How to draw momentum vectors Why is momentum a vector? How can momentum be lost in an elastic collision? How do you find initial momentum? How to find kinetic energy from momentum?
Energy is defined as the ability to do work. During an impact, an object's energy is converted into work. The energy of a moving object is called kinetic energy, and is equal to one half of the object's mass times the square of its velocity: \(KE=\frac{1]{2}mv^2\) When thinki...
kinetic energy, which can be captured, just like the energy in moving water can be captured by the turbine in ahydroelectric dam. In the case of awind-electric turbine, the turbine blades are designed to capture the kinetic energy in wind. The rest is nearly identical to a hydroelectric ...
NEW ENERGY NEWS NUCLEAR SOLUTIONS RADWASTE PROCESS A technical article in Infinite Energy by nuclear physicist Dr. Paul M. Brown, Vice President of Nuclear Solutions, LLC of Aurora, Colorado, shows how overlooked yet completely conventional nuclear physics can be used to drastically reduce the half...
Heat is one of the seemingly countless forms of the quantity known as energy in physics. Energy has units of force times distance, or newton-meters, but this is usually called the joule (J). In some applications, the calorie, equal to 4.18 J, is the standard unit; in still others, th...
To make bunker busters that can go even deeper, designers have three choices: They can make the weapon heavier. More weight gives the bomb more kinetic energy when it hits the target. They can make the weapon smaller in diameter. The smaller cross-sectional area means that the bomb has to...
Since a car is relatively light, this amount of energy is acceptable (you can buy low rolling-resistance tires for your car if you want to save a little gas). Since a train weighs thousands of times more than a car, the rolling resistance is a huge factor in determining how much force...
In practice, nuclear power plants don't work by obliterating atoms completely; instead, they split very large atoms into smaller, more tightly bound, more stable atoms. That releases energy in the process—energy we can harness. According to a basic rule of physics called the law of ...