Category: Physics

What are examples of endergonic and exergonic reactions? Often, one chemical reaction feeds the next and endergonic reactions are coupled to exergonic reactions to give them enough energy to proceed. For example, firefly bioluminescence results from endergonic luminescence by luciferin, coupled with exergonic ATP release. Is Endergonic the same as endothermic? Re: Exothermic vs Exergonic […]

What to use instead of measuring spoons? Kitchen scales What size is a teaspoon? 5 mL How can I measure a teaspoon without one? 1/4 teaspoon is about two good pinches between your thumb and both your forefinger and middle finger. A teaspoon is about the size of the tip of your finger (joint to […]

Can I use my phone when parked? When can you use a phone in your vehicle? The law is clear on when you can use a hand-held device behind the wheel. It is only legal if you are safely parked – and this does not include waiting in traffic or stationary at the traffic lights. […]

Why do anions affect flame color? When the excited electron collapses back into its ground state, it emits a photon. It is the wavelength of this photon (ergo, the energy difference between the ground and excited states) that dictates the colour of the flame. While usually cations dictate the colour, anions are also known to […]

Why do advertisers use testimonials quizlet? Why do advertisers use testimonials? They provide celebrity encouragement to persuade the consumer. You just watched a commercial in which a popular singer picks up a soda before going on stage. When the singer drinks the soda, he appears to feel more confident. Which of the following is a […]

What weapons were used during the Cold War? Pages in category “Infantry weapons of the Cold War” AA-52 machine gun. MAC-58. AK-47. AK-63. AK-74. AKM. ALFA M44. AMD-65. How did the Cold War affect the US? The Cold War shaped American foreign policy and political ideology, impacted the domestic economy and the presidency, and affected […]

What is the importance of first law of thermodynamics? The first law of thermodynamics has been validated experimentally many times in many places. It is truly a law of physics. It always allows the conversion of energy from one form to another, but never allows energy to be produced or destroyed in the conversion process. […]

What can we learn from a continuous spectrum? A continuous spectrum contains many different colors, or wavelengths, with no gaps. Perfectly white light shined through a prism causes dispersion of the light, and we see a rainbow. Looking at absorption and emission spectra can tell you what elements are present in stars like the sun […]

How do you know when something is in an experiment? The researcher has no control over the variables in an observational study. An experiment is a method of applying treatments to a group and recording the effects. Remember, a good group experiment will have two basic elements: a control and a treatment. What is the […]

Is Port au Prince poor? Haiti has long struggled with poor living conditions in the more rural areas of the country causing many Haitians to migrate towards the capital city of Port-au-Prince….CIA World Factbook. Field Haiti GDP (purchasing power parity): $18.54 billion (2014 est.) GDP – per capita (PPP): $1,800 (2014 est.) What is the […]