Physics, 23.07.2021 03:20 debrielcalderon
Example 2-21 depicts the following scenario with the accompanying figures. A hot-air balloon is rising straight upward with a constant speed of 6.5 m/sm/s. When the basket of the balloon is 20.0 mm above the ground, a bag of sand tied to the basket comes loose and reaches a maximum height of 22 mm.
(a) If the bag in Example 2-21 had been released at 31.0 mm instead, with everything else remaining the same, would its maximum height be 33 mm, greater than 33 mm, or less than 33 m. 33m
(b) Find the speed of the bag in part A just before it lands when it is released from 31.0 m
(c) Now, suppose the balloon in Example 2-21 is descending with a constant speed of 4.2 m/sm/s when the bag of sand comes loose at a height of 35 mm. What is the amount of time the bag is in the air?
(d) What is the speed of the bag when it is 17 mm above the ground?
Answers: 2
Physics, 21.06.2019 21:40
Since the investigative question has two variables, you need to focus on each one separately. thinking only about the first part of the question, mass, what might be a hypothesis that would illustrate the relationship between mass and kinetic energy? use the format of "if…then…because…” when writing your hypothesis.
Answers: 1
Physics, 22.06.2019 06:30
The coulomb's law explains which of the following? select all the force between two charged objects is inversely proportional to the charge on each object. the force between two charged objects is directly proportional to the charge on each object. the force between two charged objects is directly proportional to the distance separating them. the force between two charged objects is inversely proportional to the square of the distance separat coulomb's law is similar to newton's 2nd law. if the force between two objects is f and the charge on both objects is doubled, the new force between the would now be 2f. if the force between two objects is 2f and the distance separating them is doubled, the new force between the objects would now o the be zf.
Answers: 3
Physics, 22.06.2019 07:40
Astudent creates a model of a closed ecosystem by filling a glass tank half full with water, then adding 10 snails and two small aquatic plants. the next day, all the snails are dead. what is the most likely cause of their death?
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Example 2-21 depicts the following scenario with the accompanying figures. A hot-air balloon is risi...
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