Can you see outside in a submarine? Can You See Outside When You are Underwater? No, Navy submarines don’t have windows or portholes so the crew can watch undersea life. Submarines have only periscopes for outside vision, and those are only used close to the surface, a periscope depth (PD). Where are periscopes used? Uses […]
What were the first hominins?
What were the first hominins? australopithecines What four characteristics define a hominin? Some characteristics that have distinguished hominins from other primates, living and extinct, are their erect posture, bipedal locomotion, larger brains, and behavioral characteristics such as specialized tool use and, in some cases, communication through language. What are 5 types of hominids? In this […]
What is the difference between a supersaturated solution and a saturated solution?
What is the difference between a supersaturated solution and a saturated solution? A saturated solution contains the maximum amount of solute that will dissolve at that temperature. Any further addition of solute will result in undissolved solid on the bottom of the container. A supersaturated solution contains more than the maximum amount of solute that […]
What are two things that might affect an ecosystem?
What are two things that might affect an ecosystem? Wind, rain, predation and earthquakes are all examples of natural processes which impact an ecosystem. Humans also affect ecosystems by reducing habitat, over-hunting, broadcasting pesticides or fertilizers, and other influences. What can disrupt an ecosystem? Disruptions to Ecosystems Wildfires. Fire is a common disruption to ecosystems […]
What task requires the most work lifting a 50 kg sack 2 meters or lifting a 25 kg sack 4 meters?
How do you calculate meters per second?
How do you calculate meters per second? The velocity in meters per second is equal to the distance in meters divided by time in seconds. How do I calculate my work hours? How to manually calculate employee hours Convert all times to 24 hour clock (military time): Convert 8:45 am to 08:45 hours. Next, Subtract […]
What is the flat ocean floor called?
What is the flat ocean floor called? abyssal plain What are the three divisions of the continental margin? The continental margins consist of three portions: (1) the continental shelf which has shallow water depths rarely deeper than 650 ft) and extends seaward from the shoreline to distances ranging from 12.3 miles to 249 miles, (2) […]
Do standing waves carry energy from one area to another?
Do standing waves carry energy from one area to another? Standing waves may be created from two waves (with equal frequency, amplitude and wavelength) travelling in opposite directions. Unlike the travelling waves, the standing waves do not cause a net transport of energy (because the two waves which make them up are carrying equal energy […]
Why is Hohmann transfer most efficient?
Why is Hohmann transfer most efficient? The most energy-efficient way to move between circular orbits is the Hohmann transfer orbit [1]. The first burst of thrust is calculated so that the maximum altitude of the resulting elliptical orbit is the desired altitude of the new circular orbit. Why is Hohmann transfer efficient? The Hohmann transfer […]
How do you choose a schedule for reinforcement?
How do you choose a schedule for reinforcement? Choosing a Schedule of Reinforcement When choosing a schedule, consider: The skill of the staff implementing the intervention. The desired rate of responding. The need for consistency in responding. What is an example of fixed interval? A weekly paycheck is a good example of a fixed-interval schedule. […]