Do resistors have a positive and negative side? Resistors don’t care which leg is connected to positive or negative. The + means where the positive or red probe of the volt meter is to be placed in order to get a positive reading. This is called the “positive charge” flow sign convention. Does it matter […]
Does ReadWorks cost money?
Does ReadWorks cost money? As always, as part of our nonprofit mission, ReadWorks is completely free. How do you read a passage? How to Read the Passages A good standard approach is to glance over the corresponding questions before you begin to read the first passage. Quickly read the information blurb that comes at the […]
Is memory foam cancerous?
Is memory foam cancerous? Also, despite the fact that some of the chemicals that cause mattress off-gassing odors are classified as carcinogens or potential carcinogens, no studies have shown memory foam is toxic or causes cancer. What mattress do astronauts use? The Tempur-Pedic® /NASA Story The material, if successful, would significantly reduce the effects of […]
What are the pros and cons of fusion?
What are the pros and cons of fusion? List of Pros of Nuclear Fusion It is relatively cost-competitive. It produces high energy density. It causes less pollution. It can be sustainable. It is extremely difficult to achieve. It produces radioactive waste. More research and brainpower is needed to solve its issues. How long will nuclear […]
What is the most common first symptom of gonorrhea?
What is the most common first symptom of gonorrhea? Symptoms include: discharge from the vagina (watery, creamy, or slightly green) pain or burning sensation while urinating. urge to urinate more frequently. heavier periods or spotting. sore throat. pain during sexual intercourse. sharp pain in the lower abdomen. fever. Who has the highest rate of STDs? […]
What Colour surface is best at absorbing infrared radiation?
What Colour surface is best at absorbing infrared radiation? Dark What Colour is the best absorber of radiation? black How can you tell the difference between good and bad emitters of infrared radiation? Good emitters of IR (infra-red) radiation are also good absorbers. Matt, black surfaces are the best emitters and absorbers; and shiny, light […]
What are the four types of dyslexia?
What are the four types of dyslexia? 6 Types of dyslexia Phonological Dyslexia. Did you know that 75% of people who have dyslexia experience difficulty in breaking speech into individual sounds? Surface Dyslexia. Visual Dyslexia. Primary Dyslexia. Secondary Dyslexia. Trauma Dyslexia also referred to as Acquired Dyslexia. Is dyslexia a form of retardation? Stated simply, […]
Can eating less meat help reduce climate change?
Can eating less meat help reduce climate change? In short, even if you aren’t already a vegetarian, cutting out some meat, especially red meat and large predatory fish, and eating lower on the food chain overall can help significantly lower your personal greenhouse gas emissions. Why is eating meat bad for environment? It causes climate […]
What are the purpose and effects of the parasympathetic nervous system?
What are the purpose and effects of the parasympathetic nervous system? The parasympathetic nervous system is responsible for the body’s rest and digestion response when the body is relaxed, resting, or feeding. It basically undoes the work of sympathetic division after a stressful situation. The parasympathetic nervous system decreases respiration and heart rate and increases […]
Why do electrons have spin?
Why do electrons have spin? Because electrons of the same spin cancel each other out, the one unpaired electron in the atom will determine the spin. There is a high likelihood for either spin due to the large number of electrons, so when it went through the magnetic field it split into two beams. What […]