How do scientists know the universe is expanding simple? American astronomer Edwin Hubble and others discovered in the 1920s that the Universe is expanding by showing that most galaxies are receding from the Milky Way — and the farther away they are, the faster they are receding. The roughly constant ratio between speed and distance […]
How do huge stars die?
How do huge stars die? All stars eventually run out of their hydrogen gas fuel and die. When a high-mass star has no hydrogen left to burn, it expands and becomes a red supergiant. While most stars quietly fade away, the supergiants destroy themselves in a huge explosion, called a supernova. Why do most stars […]
Is it normal to hate roller coasters?
Is it normal to hate roller coasters? While roller coasters are a popular theme park attraction, certain people feel nauseated, afraid, dizzy, or unsafe when riding roller coasters. In many cases, this fear is related to other phobias – such as acrophobia, claustrophobia or emetophobia – a condition like vertigo, or to a traumatic event. […]
What are the best electrodes for electrolysis?
What are the best electrodes for electrolysis? Steel and iron are the most commonly used for electrolysis of water. These electrodes are used as anode and it is sacrificed in electrolysis, as the anode rusts (get oxidized) and the cathode de-rusts (get reduced). What factors affect rate of electrolysis? There are many factors that affect […]
How do you explain solubility to a child?
What should my bpm be for my age?
What is the difference between cognitive therapy and cognitive behavioral therapy?
What is the difference between cognitive therapy and cognitive behavioral therapy? The main difference between the two is that cognitive therapy focuses on eliminating psychological distress, while cognitive-behavioral therapy targets the elimination of negative behavior, as well. What are the 4 components of CBT? In CBT/cognitive therapy, we recgonize that, in addition to your environment, […]
What is a lever give two examples?
What is a lever give two examples? The class of lever depends on the location of the load, force, and fulcrum. Some examples of levers include more than one class, such as a nut cracker, a stapler, nail clippers, ice tongs and tweezers. Other levers, called single class levers include the claw end of a […]
Which figure of speech is allegedly?
Which figure of speech is allegedly? Allegedly is the adverb form of the adjective alleged, which itself comes from the past tense of the verb allege, meaning to claim without proof or before proof is available. What is it called when you refer to something as something else? Synecdoche is a rhetorical trope and a […]
How does the working distance change when you increase the magnification?
How does the working distance change when you increase the magnification? Working distance is how much space exists between the objective lens and the specimen on the slide. As you increase the magnification by changing to a higher power lens, the working distance decreases and you will see a much smaller slice of the specimen. […]