WebVerified questions. When exposed to strong light, the pupil of the eye of a cat narrows to a fine slit, about 0.30 \mathrm {~mm} 0.30 mm across. Suppose that the cat is looking at two white mice 20 \mathrm {~m} 20 m away and separated by a distance of 5.0 \mathrm {~cm} 5.0 cm. Can the cat distinguish one mouse from the other? WebAug 8, 2024 · Most people need 7–9 hours of sleep per night, but working out how much deep sleep they need is more complex. The two main categories of sleep are called rapid eye movement (REM) sleep...
How Much Sleep Do We Really Need? Sleep Foundation
WebAug 29, 2024 · The amount of sleep a child needs varies depending on the individual and certain factors, including the age of the child. Following are some general guidelines: 1-4 Weeks Old: 15 - 16 hours per... WebApr 6, 2024 · During sleep, it is normal for a person’s heart rate to slow down below the range for a typical resting heart rate. Between 40 to 50 beats per minute (bpm) is considered an average sleeping heart rate for adults, though this can vary depending on multiple factors. Typical Heart Rates for Children fast food open today christmas
Deep sleep: Stages and how much you need - Medical News Today
WebThe best time to go to bed for children age 11 and under, to have an adequate amount of sleep needed each day: 8 PM - 9 PM. For teenage individuals, 13-15 years old, the optimal hour range would be from 9 PM - 10 PM to spend enough hours asleep and maintain sufficient wakefulness throughout their waking periods during school days or at … WebJan 8, 2024 · Q. How much sleep do adults really need? A. The amount of sleep you need varies with age. The National Sleep Foundation recommends that people 18-64 years old … WebSep 19, 2024 · Cycle 2: You’ll get slightly more light sleep, still a lot of deep sleep (but less than before), and a little more REM. Cycle 3: You’ll probably log a lot more light sleep, a little bit of deep sleep, and more REM. After this, during the second half of the night, the cycles mostly break down as your body alternates between light sleep and ... fast food open today