Category: Physics

What is the velocity of the stone after 3 seconds? Average speed=Distance travelledTime taken. Returning to the example of the stone launched upwards with initial velocity 30 m/s: the average speed for the first three seconds is 453=15 m/s. the average speed for the first four seconds is 504=12.5 m/s. What is the velocity of […]

Which best describes the relationship between rocks and minerals? Answer Expert Verified. The statement that best describes the relationship between minerals and rocks is that most rocks are made of minerals. The three main types of rocks are sedimentary, igneous, and metamorphic. The crust of the Earth is made from rocks. Which best describes the […]

How is the conservation of soil and water connected? Agriculture depends on healthy soil and water. Fertile soil and clean water are both renewable resources in natural systems and, when managed properly, can also be renewable resources in the context of agricultural production. Soil and water are required resources for life on Earth. Who made […]

What is the purpose of aldol condensation? Aldol Condensation can be defined as an organic reaction in which enolate ion reacts with a carbonyl compound to form β-hydroxy ketone or β-hydroxy aldehyde, followed by dehydration to give a conjugated enone. Aldol Condensation plays a vital role in organic synthesis, creating a path to form carbon-carbon […]

What are the 3 kinds of noise? Sample answer: The different types of noise include physical, semantic, psychological, and physiological. Each interferes with the process of communication in different ways. Physical noise is any sort of outside communication effort by someone or something, for example a loud noise that interrupts or distracts you. How is […]

What makes a high sound? If an object moves back and forth quickly, it will cause a high pitch sound, such as that of a bell. The pitch of a sound is determined by how quickly or slowly an object moves back and forth. So, low pitch means slower vibrations and high pitch means faster […]

What are the four main parts of barrier island beach system? Primary Morphological Components Bays and Lagoons: shallow open to partially restricted water areas located in the backbarrier. Marshes: salt-tolerant vegetated areas within the intertidal area of the backbarrier. Tidal Flats- flat, sandy to muddy areas that are exposed at mid to low tide along […]

What will the transport be like in 2050? By 2050, because of friction-free technologies and advances in material science, the average passenger vehicle will weigh less than 200 lbs. By 2050, because of automation, far fewer pieces, and greatly reduced complexity the average manufacturing time for a vehicle will be less than one hour. What […]

How much does a good telescope cost? A good telescope can cost anywhere from $200 to $8000 US dollars. What size telescope do you need to see galaxies? If you want to observe galaxies — and I mean really get something out of the time you put in at the eyepiece — you have to […]

Are lakes connected to anything? Generally lakes flow into oceans via rivers, not the other way around. The lake is replenished by rainwater, or by rivers often connected to high elevation sources of water, like a mountain. Why are lakes drained? An operable lake drain accomplishes the following: Makes for a safer dam by providing […]