20 points DUE TODAY
Please help with these 3 questions.
#1 Design an experiment to det...
Physics, 08.04.2021 05:10 dontcareanyonemo
20 points DUE TODAY
Please help with these 3 questions.
#1 Design an experiment to determine how changing the velocity or mass of an object impacts its kinetic energy. Explain the measurements youâll make and discuss the number of experimental groups youâll include and trials youâll perform. Also identify the independent, dependent and controlled variables.
#2 Below is a cart at different positions along a rollercoaster. Compare the potential energy of the cart at position A, B, C and D. Also, compare the total energy of the cart at position A to position C.
#3Compare the potential energy of an object in space to an object resting on Earthâs surface. Specifically, how would the potential energy of a person on a plane compare to an astronaut traveling on a spacecraft to Mars?
Answers: 3
Physics, 22.06.2019 10:10
Aclarinetist, setting out for a performance, grabs his 3.350 kg clarinet case (including the clarinet) from the top of the piano and carries it through the air with an upward force of 24.65 n. find the case's vertical acceleration. indicate an upward acceleration as positive and a downward one as negative.
Answers: 1
Physics, 22.06.2019 23:00
Two horses begin at rest. after a few seconds, horse a is traveling with a velocity of 10 m/s west, while horse b is traveling with a velocity of 13 m/s west. which horse had a greater acceleration? a. horse a because its change in velocity was greater than horse b's in the same time. b. horse b because its change in velocity was greater than horse a's in the same time. c. horse b because its change in velocity was the same as horse a's, but it took less time. d. both horses had the same acceleration.
Answers: 1
Physics, 23.06.2019 00:20
You are the coordinator for a program that is going to take place at night in a rectangular amphitheater in the mountains. you will have no access to any electricity, but you must be able to illuminate the entire grounds. you know the intensity of the light from a lantern varies inversely as the square of the distance from the lantern. suppose the intensity is 90 when the distance is 5 m. a. write an equation to model the situation. b. solve for the constant of variation. c. write the equation to model the situation using the constant () of variation. d. you have been given lanterns with 40 light intensity. use your equation to solve for the distance from the lantern. e. you need to illuminate 225 km. how many meters do you need to light? f. how many lanterns will you need?
Answers: 3
Physics, 23.06.2019 02:10
The average atmospheric pressure on earth is approximated as a function of altitude by the relation patm = 101.325 (1 â 0.02256z)5.256, where patm is the atmospheric pressure in kpa, and z is the altitude in km with z = 0 at sea level. determine the approximate atmospheric pressures at atlanta (z = 306 m), denver (z = 1610 m), mexico city (z = 2309 m), and the top of mount everest (z = 8848 m).
Answers: 3
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