Physics Homework Answers & Questions Page 52

• How can you derive an equation for the area under a velocity-time graph?

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• How do you increase the mechanical advantage of a pulley?

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• S.i unit and dimension of angular momentum?

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• What kind of energy is the energy of motion?

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• How does a single-slit diffraction pattern differ from a double-slit pattern?

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• What are some examples of pendulums?

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• What is thermodynamics?

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• What is light? How fast does light travel?

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• Does an electronic balance measure mass or weight?

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• How do you convert inches to feet?

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• How does specific heat of water compare to other substances?

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• An object that weighs one pound on the moon will weigh about 6.02 pounds on Earth. Suppose a moon rock weighs 11 pounds on the moon. How much will the same rock weigh on Earth?

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• What is a carnot engine?

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• How does Newton's first law affect human motion?

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• Why is the coefficient of restitution important?

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• How does Newton's first law affect a balloon car?

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• What is the difference between a ray of light and a beam of light?

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• The gauge pressure in both tires of a bicycle is 690 kPa. If the bicycle and the rider have a combined mass of 90.0 kg, what is the area of contact of each tyre with the ground?

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• How does Newton's third law apply to a rifle firing a bullet?

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• What are some examples of concave mirrors?

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• What is an example Kepler's Third Law practice problem?

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• Why does Newton's cradle stop?

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• The law of conservation of energy states that, "Energy cannot be created nor destroyed, but it can be transferred from one body to another". If that is so, where did energy come from at the FIRST place?

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• How does static electricity work in a balloon?

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• What happens to the angle of refraction as the angle of incidence increases?

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• What is a lever?

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• How does inertia relate to the flight of an airplane?

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• Are there any other formula of average acceleration beside change in velocity over change in time?

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• An electric clothes dryer draws 18 A from a 240-V wall outlet. How much power, in watts, does it use?

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• Free body diagram help? Ramon pushes on a bed that has been pushed against wall, draw a diagram that identifies the forces and make a separate list of all forces that the bed applies to other objects

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• What is the force, in terms of Coulomb's constant, between two electrical charges of ##-1 C## and ##-2 C## that are ##4 m ## apart?

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• How do you find frequency in uniform circular motion?

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• How is the law of conservation of energy similar to the law of conservation of mass?

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• How do you explain diffraction using Huygens principle?

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• How can a converging lens produce a virtual image?

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• What is a circuit diagram?

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• Is it correct to say that constant speed = 0 acceleration = no resultant force?

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• What is centre of buoyancy?

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• How does an electric generator work?

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• What are unbalanced forces?

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• What simple machines belong to the lever family?

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• A capacitor is charged to potential difference of 12V it delivers 40% of its stored energy to lamp? what is final potential difference across capacitor? a. 4.3V b. 4.8V c. 7.2V d. 9.3V

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• What are some examples of convex mirrors?

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• What is the speed of light in water? in glycerine?

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• If one square mile is 640 acres, how many square meters are there in 1 acre?

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• Who discovered X-rays?

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• Is a concave mirror converging or diverging?

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• A person 1.80 m tall stands in front of a plane mirror. What is the minimum height of the mirror, and how high must its lower edge be above the floor for the person to be able to see his/her whole body? Person’s eyes are 6.0 cm below the top of the head.

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• How do you calculate average speed?

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• What is the SI unit of acceleration?

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