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...
You can break them up into kinetic and potential energy. Kinetic Energy Kinetic energy is the energy of an object in motion, such as a spinning top or a moving car. Motion energy: Motion energy is the energy an object possesses due to its motion. Radiant energy: This type of energy ...
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?
To make bunker busters that can go even deeper, designers have three choices: They can make the weaponheavier. More weight gives the bomb more kinetic energy when it hits the target. They can make the weaponsmaller in diameter. The smaller cross-sectional area means that the bomb has to mo...
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...
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...
Step 4: Using the changes in potential and kinetic energy, determine the work done by non-conservative forces using the equation: {eq}W_{nc}=\Delta KE+\Delta PE {/eq}. Sum the changes in kinetic and potential energy to find the work done: {eq}W_{nc}=182813\:J-318825\:J {/...
On February 8, 2022, approximately 40 of the 49 Starlink satellites were reported to have lost altitude, leading to atmospheric re-entry. SpaceX reported that the orbital decay on Starlink satellites was considered to be linked to a geomagnetic storm tha