Review Papers in Science

Topics: Resistor, Force, Electrical resistance Pages: 18 (4345 words) Published: August 15, 2013
1. How much work does a person do in pushing a box with a force of 10 N over a distance of 4.0 m in the direction of the force? (A) 0.4 J (B) 4.0 J (C) 40 J (D) 400 J (E) 4000 J 2. A person pushes a 10 kg box at a constant velocity over a distance of 4 m. The coefficient of kinetic friction between the box and the floor is 0.3. How much work does the person do in pushing the box? (A) 12 J (B) 40 J (C) 75 J (D) 120 J (E) 400 J 3. How much work does the force of gravity do in pulling a 10 kg box down a 30º inclined plane of length 8.0 m? Note that sin 30 = cos 60 = 0.500 and cos 30 = sin 60 = 0.866. (A) 40 J (B) 69 J (C) 400 J (D) 690 J (E) 800 J 4. How much work does a person do in pushing a box with a fo rce of 20 N over a distance of 8.0 m in the direction of the force? (A) 1.6 J (B) 16 J (C) 160 J (D) 1600 J (E) 16000 J 5. The figure below is a force vs. displacement graph, showing the amount of force applied to an object by three different people. Al applies force to the object for the first 4 m of its displacement, Betty applies force from the 4 m point to the 6 m point, and Chuck applies force from the 6 m point to the 8 m point. Which of the three does the most work on the object?

(A) Al

(B) (C) (D) (E)

Betty Chuck Al and Chuck do the same amount of work Betty and Chuck do the same amount of work a car’s speed doubles, what happens to its kinetic energy? is quartered is halved is unchanged is doubled is quadrupled

6. When (A) It (B) It (C) It (D) It (E) It

7. A worker does 500 J of work on a 10 kg box. If the box transfers 375 J of heat to the floor through the friction between the box and the floor, what is the velocity of the box after the work has been done on it? (A) 5 m/s (B) 10 m/s (C) 12.5 m/s (D) 50 m/s (E) 100 m/s 8. A person on the street wants to throw an 8 kg book up to a person leaning out of a window 5 m above street level. With what velocity must the person throw the b ook so that it reaches the person in the window? (A) 5 m/s (B) 8 m/s (C) 10 m/s (D) 40 m/s (E) 50 m/s Questions 9 and 10 refer to a forklift lifting a crate of mass 100 kg at a constant velocity to a height of 8 m over a time of 4 s. The forklift then holds the crate in place for 20 s. 9. How much power does the forklift exert in lifting the crate? (A) 0 W (B) 2.0 10 3 W (C) 3.2 10 3 W (D) 2.0 (E) 3.2 10 4 W 10 4 W

10. How much power does the forklift exert in holding the crate in place? (A) 0 W (B) 400 W (C) 1.6 10 3 W (D) 4.0 10 3 W (E) 1.6 10 4 W

Acceleration Practice Problems
1. A car starts off stopped at the ramp light onto I5. When the light turns green it increases its speed to 30 m/s in 8s. a) What is the car's acceleration during those 8s?

b) Fill in the table below for the instantaneous speed of the car for ever second between 0s to 8s. Time 0s Elapsed Instantaneous Speed 1s 2s 3s 4s 5s 6s 7s 8s

2. A skateboarder starts off going up a ramp at 10m/s. When she reaches the top of the ramp, 1.5s later, she comes to a complete stop. What was her acceleration on the ramp? (Hint remember the sign of your answer will tell you if the acceleration represents speeding up or slowing down.)

3. A powder blue mini-van is tearing along a straight road when it’s driver sees a black cat in the road. It slows from 90miles/hour to 20 miles/hour in 10 seconds. What is the car’s acceleration? (Hint your answer should be in miles/hour/s.)

4. Mrs Mihata’s Mazda can accelerate at 5miles/hr/s. If she is already going 20miles/hr and then accelerates for 6 seconds how fast is she going when she is finished accelerating?

b. Fill in the table below to find her instantaneous speed at each second as she accelerates. Time 0s Elapsed Instantaneous Speed 1s 2s 3s 4s 5s 6s

5. A jet airplane accelerates from rest at 5 m/s/s for 16.4 s before taking off. How fast is it going when it leaves the ground?

b. Convert the speed you just found is #5 from m/s to miles/hr?

6. A fast car accelerates at 10 mi/hr/s from a...
Continue Reading

Please join StudyMode to read the full document

You May Also Find These Documents Helpful

  • Physical Science Research Paper

    ... Westwood College Project 1 Physical Science Research Paper Evan Duran PHYS212 October 8, 2013 Physical science is the study of physics and chemistry of nature. From the materialist and functionalist viewpoints it overlaps the life sciences where ecology studies the evidences of historical facts or evolution. Physics along with Mathematics and Chemistry is one of the fundamental sciences because the other natural sciences like biology, geology etc., deal with systems that seem to obey the laws of physics. According to Physics, the physical laws of matter, energy and the fundamental forces of nature govern the interactions between particles and physical entities (such as planets, molecules, atoms or the subatomic particles). Some of the basic pursuits of physics are describing the nature, measuring and quantifying of bodies and their motion, dynamics and so on. But what I want to touch up on is mass, force and weight. Considering that I am a Construction Management major, I believe these are the top key physics implemented in the pursuit of construction. Mass is a measure of the amount of material in an object, weight is the gravitational force acting on a body (although for trading purposes it is taken to mean the same as mass), force is a measure of the interaction between bodies and load usually means the force exerted on a surface or body....

    Read More
    659 Words 3 Pages
  • Science 8 Essay

    ... FIRST MID-QUARTER ASSESSMENT IN SCIENCE (8th Grade – Candid Puffin) Name: _____________________ Date: ________________ I. KNOWLEDGE A. Identification. Identify the law/concept that explains each of the given phenomena. Write only the letter of the correct answer on the space provided. A – Law of Inertia B – Law of Acceleration C – Law of Interaction _____ 1. Recoil of a gun when fired _____ 2. Two men find a car harder to push than a tricycle _____ 3. A body moves backward when a motorcycle starts to move forward. _____ 4. A cigarette vendor moves forward after jumping off from a jeepney. _____ 5. Two reacting forces between a pen and a paper when writing _____ 6. Use of seatbelt as a safety measure _____ 7. The harder you dribble a basketball, the higher it bounces. _____ 8. A magician pulls a tablecloth out from under dishes & glasses on a table without disturbing them. _____ 9. A picture hanging on a wall and does not move. _____ 10. A heavy table is easier to move when 5 people are pushing it compared to only 2 people. B. Fill Me Up. Fill up the following with the needed information to make the sentence complete. 1. ______________ is the force on a body due to gravity. 2. ______________ is the quantity of matter a body contains. 3. Forces that may result from direct physical contact between two objects are called ______________. 4. ______________ is the force of attraction between two...

    Read More
    673 Words 4 Pages
  • science paper

    ... Solar-Powered: Study Chemical Reaction Rates in Ultraviolet (UV) Beads Alana Brown Forest Trail Middle School Mr. Gorcowski Table of Contents Acknowledgements Page 1 Purpose and Hypothesis Page 2 Introduction and Review Literature Page 3-4 Materials and Procedures Page 5-6 Results Page 7 Conclusions Page 8 Reference List Page 9 Acknowledgements I want to thank my mom for buying all the materials that I needed. I want to thank Mr. Gorcowski for answering the questions that I had. Introduction UV light produced by the sun is blocked from the Earth’s atmosphere, but some still gets onto the earth. UV beads have a pigment the changes color when exposed to ultraviolet light radiation. The dye in the UV bead is photo chromic that changes color when exposed to UV, which is chemical reaction. Review Literature UV, or ultraviolet, light is an invisible form of electromagnetic radiation that has a shorter wavelength than the light humans can see. It carries more energy than visible light and can sometimes break bonds between atoms and molecules, altering the chemistry of materials exposed to it. Ultraviolet-sensitive beads are beads that change color in the presence of ultraviolet radiation. Ultraviolet rays are present in sunlight and light from various artificial sources, and...

    Read More
    678 Words 4 Pages
  • Review of Paper

    ... Software Quality Assurance Assignment# 1 Summary of Paper “A Framework for Automated Testing of Automation Systems” Submitted by: Jawad Ahmad Registration # CIIT/FA13-RSE-023 Submitted to: Dr. Iftikhar Azeem Niazi A Framework for Automated Testing of Automation Systems Summary 1. PROBLEM DEFINITION: According to authors of the paper there is limited experience on systematically developing and testing software components in automation systems domain. A detailed testing framework is required to enable automated test processes and support testing process like linking automation supported systematic test case generation, execution, and reporting more efficiently. The main research goal of the paper is to introduce efficient software testing and test automation approaches in automation systems development. 2. PROPOSED SOLUTION: Authors have proposed a testing framework consists of four important interlinked components listed below; (a) Test Suite (set of test cases and test scenarios) (b) Test Runner (monitoring and controlling test case execution) (c) Software under test & test fixture on the target system (d) Test reports to summarize test responses. Each of them explained in detail as below; a. Test Suite: (Set of Test Cases and Test Scenarios) An important finding of authors’ previous research was that test cases can be derived directly and automatically from behavior and...

    Read More
    743 Words 3 Pages
  • Science Paper

    ...EVERYDAY SCIENCE : PHYSICS -NO.6 Time: 30 minutes Marks: 100 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. Which of the following is the best conductor for electricity? A. Distilled water B. Salt water C. Tap water D. Rain water A sprayer works on the principle expounded by A. Newton B. Archimedes C. Boyle D. Pascal Cloudy nights are warmer because A. clouds prevent radiation of heat from the ground into the air B. of low atmospheric pressure C. of the compact density of air D. more dust particles gather in the air A moving body on earth ordinarily comes to rest by itself because of the A. law of inertia B. force of friction C. conservation of momentum D. gravity An isotherm is a line joining places having equal A. Humidity B. Air pressure C. Temperature D. Rainfall Railway tracks are banked on curves so that A. necessary centrifugal force may be obtained from the horizontal component of the weight of the train B. frictional force can be avoided between the tracks and wheels C. necessary centripetal force may be obtained from the horizontal component of the weight of the train D. the train may not fly off in the opposite direction In deserts, clouds do not precipitate because of A. low pressure B. low humidity C. high wind velocity D. low temperature The spinning of Earth on its axis is called A. Rotation B. Revolution C. Orbit D. Movement The ink of a pen leaks out in an aeroplane because A. atmospheric pressure increases...

    Read More
    3475 Words 14 Pages
  • Review Paper

    ...Article Review Assignment Student’s name: Arzoo Sandhu Name of instructor: George Peary BBA (Year 1) Date of Submission: 9 October 2012 The article,” Pumping up the Canada in Canadian Tire” by Susan Krashinsky gives a detailed overview of the upcoming changes in the business environment of Canadian Tire stores across the country. While the company is gearing up to celebrate its 90th anniversary this year, it is simultaneously getting ready to face new competition. The company is preparing itself for the entry of the US retail chain “Target”, into Canada. Canadian Tire is a 90 year old company and has been a part of the lives of many generations of Canadians. With the competition in the retail industry growing with every passing day, its time the company refreshes itself and does something new, which is exactly what they are planning. The store is going to change its tagline to “Canada’s Store” and is planning its entire advertising in a manner which is more likely to appeal to viewers emotionally than rationally. They have hired Christopher Plummer for the commercial and plan to increase their spending on mainstream media. As part of the same campaign, the company wants to aim at more female consumers, just like the store Target does. Their idea to spend more on mainstream media in the coming months is smart, well...

    Read More
    1017 Words 3 Pages
  • Political Science Research Paper War on Drugs

    ...    Justin Myers  Prof. Bates  Political Science  25 April 2015    War on Drugs  From drug wars, to drug cartels, and government control, the war on drugs has been a  critical issue throughout the United States. From the early years of the 1970’s to the 1980’s, there  has been a major uprise of the use of drugs and narcotics. However, throughout the development  of law making and restrictions, there have been numerous amounts of policies that have been  placed upon this controversial issue by the government.   From the beginning of time, the war on drugs has sparked an uprise of controversial  issues throughout its course of existence. Of course, there has been many policies that have been  placed upon this issue; however, as a result there still seems to be no resolvance to this subject  matter. The war on drugs has sparked tremendously as the United States had relied on Mexico to  be their main suppliers of Marijuana. In the late 1960’s the United States demands for marijuana  was slowly increasing as the American population began to smoke marijuana regularly. Years  later, the use of marijuana grew enormously by a majority of the military as well as hippies.  President Nixon began to realize that the use of drugs was becoming out of control as the,  “working­class white soldiers who were disobeying authority, the hippies, and the anti­war  activists… all of these problems, they believed, were regularly high on marijuana (Watt 37). The ...

    Read More
    3086 Words 4 Pages
  • Essay on Final Exam Review Science

    ...1. There are four eras of Earth’s history they are Precambrian (87.6%), Paleozoic (7.1)%, Mesozoic (3.9 %), and Cenozoic (1.4 %) 2. There are four layers and two sub layers. * Inner core is solid metal and made up of nickel and iron * Outer core is made of a liquid molten core of nickel and iron * Mantle is made up of dense and mostly solid silicate rock * Lithosphere is the uppermost layer (100km thick) * Asthenosphere is the layer below the lithosphere (100km -660km) * Crust is thin silicate rock material on top 3. Pangaea is the proposed supercontinent that 200 million years ago supposedly began to shift apart and form our present continents. Alfred Wegener proposed this theory along with continental drift; Evidence he used includes matching fossils, rock types, and ancient climates. 4. The three types of plate boundaries are: * Divergent boundaries are a region where the rigid plates are moving apart, typified by the oceanic ridges * Convergent boundaries are a boundary in which two plates move together * Transform boundaries are a boundary in which two plates slide past each other without creating or destroying lithosphere 5. Seismic waves are vibrations that travel through Earth carrying energy released during an Earthquake. Three types of seismic waves are: * P-Waves: earthquake wave that pushes and pulls rock in the directions of the wave, also know as a compression wave...

    Read More
    1083 Words 5 Pages

Popular Essays

Become a StudyMode Member

Sign Up - It's Free