Molecular mass

Introduction: Hot packs work by dissolving a salt, such as calcium chloride, in water to create an exothermic reaction. When salts are dissolved in water it requires energy to break their bonds apart, but energy is also released when the ions are surrounded by the water molecules. If more energy is released than is required to break the bonds, the reaction will be exothermic and will produce heat. In hot packs the water is kept separate from the salt, and when it needs to be activated, they are…

the force of the object increases. In this case the propelling force is thrust. In order to increase thrust, the water must be expelled from the rocket at a fast rate. Secondly as the mass decreases, acceleration will increase due to the inverse proportions and because of the increasing Fnet. Therefore the rockets mass, must as minimal as possible, in order to have an increase in acceleration. Fnet = ma Newton’s Third Law of Motion – For every action there is an equal and opposite reaction.…

anything that has mass and takes up space where energy allows the ability to do work or have the ability to move or elicit change in matter. In other words, energy is a property of objects which can be transferred to other independent objects or be converted into different forms. It is described as “a system to perform work.” We have two different types of energy; kinetic and potential energy. Kinetic energy is the energy of motion. This allows work needed to accelerate a body of a given mass…

embodied the 14th century artistically. Guillaume de Machaut was born around 1300 somewhere near Réthel in the Champagne of France. The ordinary mass has come a long way since it was created. Guillaume de Machaut created the first polyphonic cycle by a single composer, Messe de Nostre Dame was revolutionary not only because it was the first polyphonic cycle of the mass by a single composer, but because of how he accomplished it. In order to discover what made Machaut so special one must analysis…

Final Draft Marching band is a group of musicians who play instruments while marching together. Either to make shapes and pictures. Usually at some sports events and parades and are performed competitively as well. The Blue Devils are a well known, professional, marching band. Nevertheless there is a lot of physics involved. Whether it’s the tempo of the song, this would involve speed, other things are in factor too like velocity, acceleration, friction, and momentum. Mostly in the movement.…

Hiking Essentials for Your Dog's Backpack In a previous article, I talked about the Approach™ Pack by Ruffwear, which by the way is an excellent pack. Well, okay you have the pack or may have ordered one, so what goes in the pack. 1.) The obvious of course, is food, water and collapsible plastic bowls for the food and water. These will always be in the pack. Know the weight so you can stay at the 25 percent of body weight. Once you have the weight of the essentials, you can start weighing and…

4.1 Strength of Anisotropy “The strength of anisotropy is calculated by the “kern and Richter” formula which gives the magnitude anisotropy k= (Vmax –V min)/Vmean, where Vmax and Vmin are maximum and minimum velocity. For P wave in the olivine crystal Vmax and Vmax are 9.89 and 7.72km/s respectively, so strength of anisotropy is 25%. For S wave k= 22% for Vmax and Vmin are 5.53 and 4.42 km/s respectively” [Seth stein 2003]. This anisotropy is the intrinsic anisotropy of the material defined as…

annoying, people would have left, or told me to leave. I thought that it was very interesting that while they sing, they stand up, while at my church (Baptist) we don’t stand for every song we sing. For Catholic churches, they take communion for every mass, where in my church we only take communion once a month. For my church, everyone has their own classroom for Sunday school and then go upstairs to the sanctuary for the sermon, only the young children go to different rooms for their lesson.…

Welcome to the Loop-Dy-Loop!!! This roller coaster is found in the beautiful area of Hersheypark inside the water park. The roller coaster, is filled with many twists, turns, and loops. This roller coaster is not just any roller coaster, it has a fabulous view of the whole park. The tallest point on this ride, where you feel the highest potential energy, is over 4,586 feet tall. This ride is over four football fields long!! While you are waiting in line you can see that the cars have three rows…

Using the data obtained through the Labquest2 computer system, my group and I calculated exactly the initial momentum and kinetic energy, final momentum and kinetic energy, and percent of momentum and kinetic energy that was lost through these collisions. To calculate momentum we used the equation p_i=p_f which expands to m_1 v_1i+m_2 v_2i=m_1 v_1f+m_2 v_2f. We can say that our first hypothesis was accepted since in collisions 1 and 2 the total initial and final momentum was similar values.…