Why do two bodies not attract each other? According to the laws of gravitation force, all masses attract each other. the greater the masses, the stronger the pull. the closer the masses, the stronger the pull. What causes items to attract? Electric charge is a physical property of particles or objects. It causes them to […]
What is a good rating for voltage drop test?
What is a good rating for voltage drop test? With a good connection, there should be no drop, or at least very little (under 0.4 volts usually, and ideally under 0.1 volts). If the drop is more than a few tenths, then there’s too much resistance, the connection will have to be cleaned or repaired. […]
What are two contact forces examples?
What are two contact forces examples? Examples of contact forces include: Reaction force. An object at rest on a surface experiences reaction force . Tension. An object that is being stretched experiences a tension force. Friction. Two objects sliding past each other experience friction forces. Air resistance. What are contact forces 10 examples? Types of […]
Why do plant cells have chloroplasts and animal cells do not?
Why do plant cells have chloroplasts and animal cells do not? Both plant and animal cells are eukaryotic, so they contain membrane-bound organelles like the nucleus and mitochondria. For example, plant cells contain chloroplasts since they need to perform photosynthesis, but animal cells do not. What are the 4 types of tissues in animals? There […]
What are the causes and consequences of El Nino?
What are the causes and consequences of El Nino? El Nino is essentially caused by the interaction between the surface layers of the tropical Pacific Ocean and the atmosphere over it. The water is warmer due to the trade winds reversing direction or becoming less intense. In contrast El Nino can also bring flooding and […]
Was all land once connected?
Was all land once connected? The word Pangaea means “All Lands”, this describes the way all the continents were joined up together. Pangea existed 240 million years ago and about 200 millions years ago it began to break apart. Over millions of years these pieces came to be the continents as we know them today. […]
How do you identify bullish momentum?
How do you identify bullish momentum? Momentum is used by investors to trade stocks in an uptrend by going long (or buying shares) and going short (or selling shares) in a downtrend. In other words, a stock can be exhibit bullish momentum, meaning the price is rising, or bearish momentum where the price is steadily […]
What are the stages of experimental research design?
What are the stages of experimental research design? The types of experimental research design are determined by the way the researcher assigns subjects to different conditions and groups. They are of 3 types, namely; pre-experimental, quasi-experimental, and true experimental research. What is the treatment in this experiment? and the “treatment” is the variable you are […]
What is caused by the collisions of gas particles with their container?
What is caused by the collisions of gas particles with their container? The collision of molecules with their container walls results in a momentum transfer (impulse) from molecules to the walls (Figure 10.7. 2). Figure 10.7. 2: Momentum transfer (impulse) from a molecule to the container wall as it bounces off the wall. How do […]
What is a isokinetic muscle contraction?
What is a isokinetic muscle contraction? An isokinetic muscle contraction occurs when the velocity of the muscle contraction remains constant while the length of the muscle changes. In an isokinetic concentric contraction, the muscle shortens while under load. In an isokinetic eccentric contraction, the muscle lengthens while under load. Is swimming isokinetic? The water provides […]