Should I use sin or cos? The sine rule is used when we are given either a) two angles and one side, or b) two sides and a non-included angle. The cosine rule is used when we are given either a) three sides or b) two sides and the included angle. Study the triangle ABC […]
What is an example of acid rain?
What is an example of acid rain? Acid rain results when sulfur dioxide (SO2) and nitrogen oxides (NOX) are emitted into the atmosphere and transported by wind and air currents. The SO2 and NOX react with water, oxygen and other chemicals to form sulfuric and nitric acids. These then mix with water and other materials […]
What can stop a muscle contraction?
What can stop a muscle contraction? Muscle contraction usually stops when signaling from the motor neuron ends, which repolarizes the sarcolemma and T-tubules, and closes the voltage-gated calcium channels in the SR. Ca++ ions are then pumped back into the SR, which causes the tropomyosin to reshield (or re-cover) the binding sites on the actin […]
What type of muscle tissue contracts the fastest?
What type of muscle tissue contracts the fastest? Skeletal muscles are divided into two muscle fiber types: Slow-twitch (type I) muscle fibers contract more slowly and rely on aerobic metabolism. Fast-twitch (type II) muscle fibers contract more rapidly due to the presence of a faster myosin. Where is muscle tissue found in the body? Muscle […]
What is the normal intensity of sound?
What is the normal intensity of sound? The Threshold of Hearing and the Decibel Scale Source Intensity Intensity Level Threshold of Hearing (TOH) 1*10-12 W/m2 0 dB Rustling Leaves 1*10-11 W/m2 10 dB Whisper 1*10-10 W/m2 20 dB Normal Conversation 1*10-6 W/m2 60 dB What is intensity level? Noun. 1. intensity level – the amount […]
Why is it difficult to push an empty glass bottle into a tank?
Can mass be lost in a chemical reaction?
What ultrasonic frequency is harmful to humans?
What ultrasonic frequency is harmful to humans? They were based on two basic assump- tions: (a) high audible frequencies (10–20 kHz) may cause annoyance, tinnitus, headache, fatigue and nausea and (b) ultrasound components (over 20 kHz) with high sound pressure level may cause hearing damage. Can ultrasound damage bones? According to the histologic and radiologic […]
What happens if you mix two liquids with the same density?
What happens if you mix two liquids with the same density? When you attempt to mix two liquids which have different densities, they separate when you stop mixing them. The “heavier” liquid deposits itself on the bottom and the “lighter” liquid deposits itself on top. There exists a wide range of liquids with various densities. […]
When your inside and outside mirrors are properly adjusted Which of the following is true?
When your inside and outside mirrors are properly adjusted Which of the following is true? When you adjust your side mirrors, position your head straight ahead as it you were driving. When your mirrors are properly adjusted, which of the following is true? The rearview mirror will be adjusted allowing you to see as much […]