(a) first consider the horse as the system of interest. In the initial state the horse is already moving at speed. In the final state the horse is at the top of the hill, still moving at speed. Write out the energy principle for the system of the horse alone. The terms on the left hand side should include only energy changes for the system, while the terms on the right hand side should relate to the surroundings (everything else)
Answers: 1
SAT, 25.06.2019 22:00
Which statements about the two fossil images are correct? 1. cave bears are ancestors of plateosaurus. 2. plateosaurus were present on earth before ostracoderms. 3. ostracoderms were the first to die. 4. plateosaurus died after the ostracoderms. 5. cave bears are the oldest fossils.
Answers: 1
SAT, 26.06.2019 05:30
An ecosystem is shown in the illustration. assume that human activities have led to a decrease in the number of eagles. a virus attack on rabbits has led to a decrease in their population in the ecosystem. which two sentences describe likely effects on the ecosystem? 1. there’s an increase in the number of snakes and insects and a decrease in the number of frogs. 2. there’s an increase in the number of snakes and insects, and the storks face increased competition for food. 3. there’s an increase in the number of storks and a decrease in the number of snakes and insects. 4. there’s an increase in the number of frogs and a decrease in the number of storks and insects. 5. there’s a decrease in the number of snakes, insects, and frogs.
Answers: 1
SAT, 27.06.2019 05:50
Suppose you need to verify how to correctly use commas. you open your english textbook and scan the chapter titles. in which one would you most likely find the information you need? a. correct capitalization b. grasping grammar c. super spelling d. proper punctuation
Answers: 1
(a) first consider the horse as the system of interest. In the initial state the horse is already mo...
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