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Can somebody explain in detail keplers laws and how they relate with newtons laws of gravity?
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Motion in two dimensions and gravitation, Physics and scientific inquiry
(8 points)Score1. During a medieval siege of a castle, the attacking army uses a trebuchet to hurl heavy stones at th ...
Motion in two dimensions and gravitation, Physics and scientific inquiry
(8 points)Score1. During a medieval siege of a castle, the attacking army uses a trebuchet to hurl heavy stones at the castle walls. If the trebuchet launches the stones with a velocity of +30.0 m/s at an angle of 50.0°, how long does it take the stone to hit the ground? What is the maximum distance that the trebuchet can be from the castle wall to be in range? How high will the stones go? Show all your work.Answer:(8 points)Score2. A 70.0 kg astronaut is training for accelerations that he will experience upon reentry. He is placed in a centrifuge (r = 10.0 m) and spun at a constant angular velocity of 16.3 rpm. Answer the following:a. What is the angular velocity of the centrifuge in rad/s?b. What is the linear velocity of the astronaut at the outer edge of the centrifuge?c. What is the centripetal acceleration of the astronaut at the end of the centrifuge?d. How many g’s does the astronaut experience?e. What is the centripetal force and net torque experienced by the astronaut? Give magnitudes and directions.Show your work.Answer:(9 points)Score3. An astronaut lands on an alien planet. He places a pendulum (L = 0.200 m) on the surface and sets it in simple harmonic motion, as shown in this graph.[img width="354" height="253" src="file:///C:/Users/Spare/AppData/Local/Temp/msohtmlclip1/01/clip_image002.jpg" v:shapes="_x0000_i1025"> NUMBER 1Answer the following questions:a. What is the period and frequency of the pendulum’s motion?b. How many seconds out of phase with the displacements shown would graphs of the velocity and acceleration be?c. What is the acceleration due to gravity on the surface of the planet in m/s2? Determine the number of g-forces.Show any necessary calculations.Answer:(8 points)Score1. Explain how Einstein’s contribution to understanding the force between the earth and the moon differed from Newton’s. Include a brief statement of Einstein’s explanation in your answer.Answer:(9 points)Score2. Saturn has a radius of about 9.0 earth radii, and a mass 95 times the Earth’s mass. Estimate the gravitational field on the surface of Saturn compared to that on the Earth. Show your work.Answer:(9 points)Score1. An experiment was devised to investigate the effects on the temperature of a cup of coffee when cream is added at different time intervals. Hot and cold water were used instead of coffee and cream. First, a container of water heated to 80°C was allowed to sit for 15 minutes. Its temperature was measured at regular intervals. Next, similar temperature measurements were taken for 15 minutes on a new container of heated water, but this time some cold water was added after the 2-minute reading. Finally, the procedure was repeated except that for this last test, the cold water was added after the 12-minute reading. The resulting recorded temperatures were plotted on the graph shown here.NUMBER2Based on the information given here, answer the following questions about the experiment.· What question was asked in the experiment?· What was the hypothesis, expressed as an if-then statement?· What were the independent and dependent variables?· What was the control in the experiment?· Were there any sources of error in the experiment? If so, what?· What could you conclude from the data?Answer:(9 points)Score2. Compare and contrast deductive reasoning and inductive reasoning. Based on the information given here, answer the following questions about the experiment:· What are the qualities of deductive reasoning?· What are the qualities of inductive reasoning?· Throughout the history of physics, when did these types of reasoning come into play?· Provide one example of a physicist who used deductive reasoning, one who used inductive reasoning, or one who used both.Answer:(7 points)Score3. The data in Light-Duty Vehicles (1975–2006) show the efficiency of light-duty vehicles from 1975 (leftmost point of the connected line) to 2006 (rightmost point of the connected line). Each point represents a year in chronological order from the left end to the right.Data adapted from http://www.sightline.org/images/blog-2008/Mileage-horsepower-EPA-600.gifNUMBER3Look at the graph carefully and answer the following questions:· What generalizations can you make about changes in fuel efficiency (miles per gallon, MPG) over the course of the study?· What generalizations can you make about changes in engine performance (horsepower) over the course of the study?· What generalizations can you make about changes in vehicle efficiency (horsepower multiplied by MPG) over the course of the study?Answer:
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In this lab, you will investigate the behavior of the human nervous system and make observations of the special senses.Activity 1: Touch Receptors (worth 10 points total)List four sensations detected by the tactile receptors in the skin(1)(2) (3) (4) Get a volunteer to touch each of these locations on your body using the same pressure. Close your eyes and rank how sensitive each area is from 1 (low sensitivity) to 5 (high sensitivity). Put your rankings in the chart.Touch Receptors LocationRank the concentration of receptors (Low:1-High:5)FingertipHeel of handForearmElbowBack of neckAnswer this question: What can you conclude about the density of touch receptors in your skin? Activity 2: Vision (worth 15 points total)Label the parts of the eye in the picture. The choices are optic nerve, cornea, iris, pupil, lens, and retina.(1)(2) (3) (4) (5) (6)Test the age of your eyes.
Hold a pencil or ballpoint pen vertically at arm's length.Close your left eye and focus on the tip.Quickly bring the pencil closer to your eye until it is out of focus.Have your partner measure the distance between your eye and the pencil.Repeat for both eyes.Try it with and without glasses (if you wear glasses).Age of your EyesCm91013185083Age102030405060Answer these questions:What was the "age" of your eyes?Right without glasses ______________ with glasses __________________Left without glasses ________________ with glasses __________________How does this compare to your actual age? Use your notes from this lesson to describe how the eye processes what is sees. Using what you know about eyesight and image processing, why can age affect the function of the eyes? Activity 3: Hearing and Balance (worth 15 points total)Label the parts of the ear in the picture. The choices are ear canal, oval window, cochlea, pinna, tympanic membrane, ear ossicles, cochlear nerve, semicircular canals, and Eustachian tube.(1)(2)(3)(4)(5)(6)(7)(8)(9)Test your sense of balance.
Stand upright with your partner nearby in case you fall.Have your partner record the length and quality of your attemptsBend your right leg and hold your foot in your right hand.Balance like this as long as you can (minimum 30 seconds).Try the same pose, but close both of your eyes.Again, have your partner nearby recording your attempts.Balance for as long as possible.Try the same pose, but close your eyes and tilt your head back slowly.Again, have your partner nearby recording your attempts.Balance for as long as possible. Balance StanceTime (min.)StabilityStanding on one foothigh---moderate---lowOne foot, eyes closedhigh---moderate---lowOne foot, eyes closed, head backhigh---moderate---lowAnswer these questions:Which stance made it the hardest to balance? Why do you think that is? How much of an impact does your inner ear have on your sense of balance? Activity 4: Taste and Smell (worth 15 points total)Your tongue has a variety of receptors capable of tasting different types of flavors. Pick four liquids to test for taste and a volunteer. Use the picture provided to "map out" your taste buds.
Obtain a few sterile swabs.Pipet a small amount of each solution into separate test tubes or cups but don't let your volunteer know what liquids you are using ahead of time.Using one solution at a time, dip a swab and run it along your volunteer's tongue.Record where your volunteer is able to taste each solution and what it tastes like.Now repeat the process again, this time have your volunteer plug his or her nose during the tasting.Label where on your tongue you tasted each of the following: SALTY BITTER SWEET SOURTasteTypes of LiquidTaste TypeLocation on the tongueTaste Type with nose pluggedLocation on the tongue with nose pluggedUse your lesson notes to explain the results for the taste sensations in each of the regions of your tongue?Can you explain why it may be more difficult to map taste with your nose plugged?
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Motion in two dimensions and gravitation, Physics and scientific inquiry
(8 points)Score1. During a medieval siege of a castle, the attacking army uses a trebuchet to hurl heavy stones at th ...
Motion in two dimensions and gravitation, Physics and scientific inquiry
(8 points)Score1. During a medieval siege of a castle, the attacking army uses a trebuchet to hurl heavy stones at the castle walls. If the trebuchet launches the stones with a velocity of +30.0 m/s at an angle of 50.0°, how long does it take the stone to hit the ground? What is the maximum distance that the trebuchet can be from the castle wall to be in range? How high will the stones go? Show all your work.Answer:(8 points)Score2. A 70.0 kg astronaut is training for accelerations that he will experience upon reentry. He is placed in a centrifuge (r = 10.0 m) and spun at a constant angular velocity of 16.3 rpm. Answer the following:a. What is the angular velocity of the centrifuge in rad/s?b. What is the linear velocity of the astronaut at the outer edge of the centrifuge?c. What is the centripetal acceleration of the astronaut at the end of the centrifuge?d. How many g’s does the astronaut experience?e. What is the centripetal force and net torque experienced by the astronaut? Give magnitudes and directions.Show your work.Answer:(9 points)Score3. An astronaut lands on an alien planet. He places a pendulum (L = 0.200 m) on the surface and sets it in simple harmonic motion, as shown in this graph.[img width="354" height="253" src="file:///C:/Users/Spare/AppData/Local/Temp/msohtmlclip1/01/clip_image002.jpg" v:shapes="_x0000_i1025"> NUMBER 1Answer the following questions:a. What is the period and frequency of the pendulum’s motion?b. How many seconds out of phase with the displacements shown would graphs of the velocity and acceleration be?c. What is the acceleration due to gravity on the surface of the planet in m/s2? Determine the number of g-forces.Show any necessary calculations.Answer:(8 points)Score1. Explain how Einstein’s contribution to understanding the force between the earth and the moon differed from Newton’s. Include a brief statement of Einstein’s explanation in your answer.Answer:(9 points)Score2. Saturn has a radius of about 9.0 earth radii, and a mass 95 times the Earth’s mass. Estimate the gravitational field on the surface of Saturn compared to that on the Earth. Show your work.Answer:(9 points)Score1. An experiment was devised to investigate the effects on the temperature of a cup of coffee when cream is added at different time intervals. Hot and cold water were used instead of coffee and cream. First, a container of water heated to 80°C was allowed to sit for 15 minutes. Its temperature was measured at regular intervals. Next, similar temperature measurements were taken for 15 minutes on a new container of heated water, but this time some cold water was added after the 2-minute reading. Finally, the procedure was repeated except that for this last test, the cold water was added after the 12-minute reading. The resulting recorded temperatures were plotted on the graph shown here.NUMBER2Based on the information given here, answer the following questions about the experiment.· What question was asked in the experiment?· What was the hypothesis, expressed as an if-then statement?· What were the independent and dependent variables?· What was the control in the experiment?· Were there any sources of error in the experiment? If so, what?· What could you conclude from the data?Answer:(9 points)Score2. Compare and contrast deductive reasoning and inductive reasoning. Based on the information given here, answer the following questions about the experiment:· What are the qualities of deductive reasoning?· What are the qualities of inductive reasoning?· Throughout the history of physics, when did these types of reasoning come into play?· Provide one example of a physicist who used deductive reasoning, one who used inductive reasoning, or one who used both.Answer:(7 points)Score3. The data in Light-Duty Vehicles (1975–2006) show the efficiency of light-duty vehicles from 1975 (leftmost point of the connected line) to 2006 (rightmost point of the connected line). Each point represents a year in chronological order from the left end to the right.Data adapted from http://www.sightline.org/images/blog-2008/Mileage-horsepower-EPA-600.gifNUMBER3Look at the graph carefully and answer the following questions:· What generalizations can you make about changes in fuel efficiency (miles per gallon, MPG) over the course of the study?· What generalizations can you make about changes in engine performance (horsepower) over the course of the study?· What generalizations can you make about changes in vehicle efficiency (horsepower multiplied by MPG) over the course of the study?Answer:
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Cellcycleindepth Studentws Cl
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Senses Lab
In this lab, you will investigate the behavior of the human nervous system and make observations of the special senses.Act ...
Senses Lab
In this lab, you will investigate the behavior of the human nervous system and make observations of the special senses.Activity 1: Touch Receptors (worth 10 points total)List four sensations detected by the tactile receptors in the skin(1)(2) (3) (4) Get a volunteer to touch each of these locations on your body using the same pressure. Close your eyes and rank how sensitive each area is from 1 (low sensitivity) to 5 (high sensitivity). Put your rankings in the chart.Touch Receptors LocationRank the concentration of receptors (Low:1-High:5)FingertipHeel of handForearmElbowBack of neckAnswer this question: What can you conclude about the density of touch receptors in your skin? Activity 2: Vision (worth 15 points total)Label the parts of the eye in the picture. The choices are optic nerve, cornea, iris, pupil, lens, and retina.(1)(2) (3) (4) (5) (6)Test the age of your eyes.
Hold a pencil or ballpoint pen vertically at arm's length.Close your left eye and focus on the tip.Quickly bring the pencil closer to your eye until it is out of focus.Have your partner measure the distance between your eye and the pencil.Repeat for both eyes.Try it with and without glasses (if you wear glasses).Age of your EyesCm91013185083Age102030405060Answer these questions:What was the "age" of your eyes?Right without glasses ______________ with glasses __________________Left without glasses ________________ with glasses __________________How does this compare to your actual age? Use your notes from this lesson to describe how the eye processes what is sees. Using what you know about eyesight and image processing, why can age affect the function of the eyes? Activity 3: Hearing and Balance (worth 15 points total)Label the parts of the ear in the picture. The choices are ear canal, oval window, cochlea, pinna, tympanic membrane, ear ossicles, cochlear nerve, semicircular canals, and Eustachian tube.(1)(2)(3)(4)(5)(6)(7)(8)(9)Test your sense of balance.
Stand upright with your partner nearby in case you fall.Have your partner record the length and quality of your attemptsBend your right leg and hold your foot in your right hand.Balance like this as long as you can (minimum 30 seconds).Try the same pose, but close both of your eyes.Again, have your partner nearby recording your attempts.Balance for as long as possible.Try the same pose, but close your eyes and tilt your head back slowly.Again, have your partner nearby recording your attempts.Balance for as long as possible. Balance StanceTime (min.)StabilityStanding on one foothigh---moderate---lowOne foot, eyes closedhigh---moderate---lowOne foot, eyes closed, head backhigh---moderate---lowAnswer these questions:Which stance made it the hardest to balance? Why do you think that is? How much of an impact does your inner ear have on your sense of balance? Activity 4: Taste and Smell (worth 15 points total)Your tongue has a variety of receptors capable of tasting different types of flavors. Pick four liquids to test for taste and a volunteer. Use the picture provided to "map out" your taste buds.
Obtain a few sterile swabs.Pipet a small amount of each solution into separate test tubes or cups but don't let your volunteer know what liquids you are using ahead of time.Using one solution at a time, dip a swab and run it along your volunteer's tongue.Record where your volunteer is able to taste each solution and what it tastes like.Now repeat the process again, this time have your volunteer plug his or her nose during the tasting.Label where on your tongue you tasted each of the following: SALTY BITTER SWEET SOURTasteTypes of LiquidTaste TypeLocation on the tongueTaste Type with nose pluggedLocation on the tongue with nose pluggedUse your lesson notes to explain the results for the taste sensations in each of the regions of your tongue?Can you explain why it may be more difficult to map taste with your nose plugged?
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