What are some similarities and differences between physical and chemical weathering? While physical weathering breaks down a rock’s physical structure, chemical weathering alters a rock’s chemical composition. Physical weathering works with mechanical forces, such as friction and impact, while chemical weathering takes place at the molecular level with the exchange of ions and cations. Why […]
What is the evidence that light is a wave?
What is the evidence that light is a wave? In 1801 a physicist in England, Thomas Young, performed an experiment that showed that light behaves as a wave. He passed a beam of light through two thin, parallel slits. The bright and dark bands demonstrated that the slits were causing light waves to interfere with […]
How do you calculate fuel cost per mile?
What 4 actions should you take after a first aid incident?
What 4 actions should you take after a first aid incident? First aid: 6 life-saving steps if you’re first on the scene of an accident. Step 1: Identify and mitigate potential dangers. Step 2: Call for help. Step 3: Check for a response. Step 4: Check the casualty’s airway. Step 5: Check the casualty is […]
What are three major types of constraints in lean?
What are three major types of constraints in lean? The underlying premise of the theory of constraints is that organizations can be measured and controlled by variations on three measures: throughput, operational expense, and inventory. What are constraints give an example? A constraint, in project management, is any restriction that defines a project’s limitations; the […]
Why are objects Coloured?
Why are objects Coloured? Objects appear different colours because they absorb some colours (wavelengths) and reflected or transmit other colours. The colours we see are the wavelengths that are reflected or transmitted. White objects appear white because they reflect all colours. Black objects absorb all colours so no light is reflected. Why is red the […]
What is the net external force on an object in free fall?
How do you decline a kiss?
Which is an example of liquid glass thermometer?
Which is an example of liquid glass thermometer? Mercury Thermometers This type of thermometer was developed by a German based physicist named Daniel Gabriel Fahrenheit. It consists of mercury as a liquid filled in a glass tube. On the body of the glass tube, calibrated marks are provided which facilitates the reading of temperature. How […]