Do I have to memorize kinematic equations for MCAT? Kinematic equations are the foundation to mastering MCAT physics. Yes you have to ‘memorize’ and know the standard formulas, but it goes deeper than that. You have to understand the units, when to use which equation, and be VERY comfortable applying these concepts to the more […]
What are 5 physical contaminants?
What are 5 physical contaminants? Common examples of physical contaminants in food businesses include: hair. fingernails. bandages. jewellery. broken glass, staples. plastic wrap/packaging. dirt from unwashed fruit and vegetables. pests/pest droppings/rodent hair. How quickly can bacterial contamination occur in food? Food poisoning can happen when disease-causing bacteria or other germs, also called ‘pathogens’, spread to […]
How photon is created?
How photon is created? A photon is produced whenever an electron in a higher-than-normal orbit falls back to its normal orbit. During the fall from high energy to normal energy, the electron emits a photon — a packet of energy — with very specific characteristics. A sodium vapor light energizes sodium atoms to generate photons. […]
Did Einstein say we Cannot solve our problems with the same thinking we used to create them?
What happens if you put a pencil in a glass of water?
Which shows the formula for converting from kelvins to degrees Celsius?
Which shows the formula for converting from kelvins to degrees Celsius? C = K – 273.15. This formula to convert the temperature in Kelvin to degree Celsius is used for changing the given temperature from Kelvin to degree Celsius. What causes liquid in thermometer to drop? When heated, the molecules of the liquid in the […]
Which is the thinnest layer of the earth?
Which is the thinnest layer of the earth? Inner core Which is the thinnest layer of atmosphere? Troposphere What are the 4 atmospheres? The atmosphere is comprised of layers based on temperature. These layers are the troposphere, stratosphere, mesosphere and thermosphere. A further region at about 500 km above the Earth’s surface is called the […]
Does your weight change in an elevator?
Does your weight change in an elevator? When the elevator is moving, we will weigh our normal weight. Since we are already moving at the same speed as the elevator (up or down), nothing is affecting us to change our weight. However, when the elevator starts to go or stops, our body resists it. The […]
How do you add two vectors using their components?
How do you add two vectors using their components? Again, the component method of addition can be summarized this way: Using trigonometry, find the x-component and the y-component for each vector. Add up both x-components, (one from each vector), to get the x-component of the total. Add up both y-components, (one from each vector), to […]