But what is sound?Sound happens when something vibrates(振动)or shakes.We can make something vibrate by hitting it.Try this experiment.Put your ruler on your desk so that part of it sticks out(伸出)over the edge.Put your hand on the part of the ruler that is on the desk.Now pull th...
When used properly, a well-fitting cock ring shouldn't get stuck on your penis. But in rare cases, a cock ring that's too small or made of a hard material could be hard to remove. To avoid this problem, always choose a cock ring you can cut off or otherwise remove easily. Don't...
What Happens When an iPhone Is Dropped in Water? Is My iPhone Waterproof? What’s the Difference Between Waterproof and Water-Resistant? How Do I Tell if My iPhone Is Water-Damaged? How Does Apple Know if I Dropped My iPhone in Water?
Soundwaves vibrate the air to send audio in through the outer ear to the ear drum, which vibrates to send sound information to the brain for processing. How we hear sound: What happens when sound waves reach the outer ear? When sound waves reach the outerear, the auricle or pinna collec...
Question: What do I do when your neighbors are constantly watching you because they're suspicious about drugs being sold?Answer: There's not much you can do. Something must have aroused their suspicion. See if you can remember what it was and then go and talk to them. ...
What is the wave speed? (m/s) Express your answer using two significant figures.2. If a wave traveling through air decreases its wavelength by half, describe what happens to the wave speed and frequency? 3. A transverse wave is traveling down a rope with ma...
Great, we’ve covered airflow basics. But what happens when you air ducts aren’t up to standards? Signs Your Ductwork Is Bad Hot & Cold Spots This is the ultimate tell-tale sign you have air ducts issues. You’ve likely felt it before. You walk into a room and it’s too hot, ...
When that happens, the whole plant vibrates a little. The snapping pipes make noises ten thousand times more quiet than a whisper. Robert knows that healthy well-watered plants are quiet. He also knows that many insects prefer a attacking dry plants rather than healthy plants. How do the ...
When the charge happens, it vibrates particles as it moves. Because lightning is such a large discharge of energy, the vibrations it causes are massive. Lightning bolts are also very hot, and this immediate heat causes air particles to expand, which creates more force. ...
“Luck is what happens when preparation meets opportunity.” “Speed kills (wins). It creates opportunity, denies options, and hastens the enemy’s collapse.” Gen. Norman Schwartzkopf “Trust leaves on horseback but returns on foot.” “If it doesn’t go easy, force it.” “Keep one ...