orbits around a planet. Satellite S2 has twice the mass and twice the orbital radius of satellite S1. [pic] What is the ratio of the centripetal force on S2 to that of S1 (S2 : S1) ? A. 1:1 B. 1:2 C. 1:4 D. 1:8 7. Which of the following is a correct statement about gravity? A. An object falling freely has no gravitational force on it. B. The acceleration due to gravity‚ g‚ is a universal constant. C. The gravitational field of a body follows an inverse square law. D. The gravitational
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away from a gravitational field the weaker the pull will be on the object decreasing the amount of energy it has there. S1 Perform an investigation and father information to determine a value for acceleration due to gravity using pendulum motion or computer assisted technology and identify reason for possible variations from the value 9.8ms-2 Experiment procedure: 1. A mass was tied to a piece of string one metre long and was attached to a clamp
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Did you know that almost all roller coasters only rely on Earth’s gravity to get the cars down the track? Roller coasters are centered all on physics and I will hopefully teach you some things‚ big or small about them today. In this essay we will be exploring the world of roller coasters. Some of the topics we will cover will range from the history‚ to the principles that allow the cars to continue throughout the length of the track‚ and the general physics surrounding roller coasters. The history
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LDR ms Optical detector Optical source Forward-biased photodiode; energy releases photo of light (near-infrared) -Resistance against light -High gain means slower -Limiting resistor is used to keep the intensity is plotted on a log-log response time current within the maximum allowed scale -More sensitive than a rating. - When it’s darker‚ it will have a photodiode (can pick up smaller -The brightness of the LED depends higher resistance. If it has a changes in light) on the current‚ and NOT the
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and he unified “earthly” bodies and “heavenly” bodies with the The Universal Law of Gravitation. Newton used the universal law of gravity to prove that the moon is accelerating towards Earth just as a body on Earth is falling towards Earth. The acceleration of both the moon and the object on Earth is calculated using the same formula. This theory is so well regarded that it has been used to hypothesize the existence of black holes and dark matter‚ later verified by observation. The search to unify
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PHYSICS Part - I CHAPTER 1 1‚ In high energy physics scientist study: a‚ matter b‚ big particles c‚ elementary d‚ ions 2‚ Wave theory of light was presented by: a‚ Newton b‚ Maxwell c‚ Compton d‚ Huygens 3‚ Natural Radioactivity was disobeyed by Decree in. a‚ 1976. b‚ 1896. c‚ 1996. d‚ 1916. 4‚ X – rays were discovered by‚ a‚ J.J. Thomson. b‚ Crooks. c‚ Lorenz. d‚ Roentgen. 5‚ The circumference of the earth was determined by‚ a‚ Albernie. b‚ Al – Khawririmi
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I. Introduction Physics is the natural science that involves the study of matter and its motion through space and time‚ along with related concepts such as energy and force. More broadly‚ it is the general analysis of nature‚ conducted in order to understand how the universe behaves. Physics is one of the oldest academic disciplines‚ perhaps the oldest through its inclusion of astronomy. Over the last two millennia‚ physics was a part of natural philosophy along with chemistry‚ certain branches
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time aloft measured in seconds. The altitude will be measured by an altimeter. The acceleration will speed up and change direction. The force can be the gravity. The kinetic energy will be the mass and velocity. The potential energy on the launch pad. Newton’s first law is about the state of motion of an object does not charge as long as the net force acting on the object is zero. His second law is about the acceleration of an object is equal to the net force acting on it divided by the object’s mass
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need to balance the centripetal force with gravitational force. Define the radian angle at centre of circle‚ arc equal in length to radius State and explain whether the motion of the ball is simple harmonic. (such as a ball bounce) acceleration is constant (g)‚ so cannot be s.h.m. Glossary: Oscillations: a repetitive back-and forth motion Free oscillations: no energy loss or gain Simple harmonic motion: acceleration directed towards a fixed point‚ and acceleration proportional to distance
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Teachers’ version GCE AS/A LEVEL – May/June 2010 Section A Syllabus 9702 Paper 41 1 (a) angle (subtended) at centre of circle (by) arc equal in length to radius (b) (i) point S shown below C (ii) (max) force / tension = weight + centripetal force centripetal force = mrω2 15 = 3.0/9.8 × 0.85 × ω2 ω = 7.6 rad s–1 B1 B1 B1 C1 C1 C1 A1 C1 A1 A1 B1 B1 B1 B1 B1 [2] [1] [4] 2 (a) (i) 27.2 + 273.15 or 27.2 + 273.2 300.4 K (ii) 11.6 K (b) (i) ( is the) mean / average square speed (ii)
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