(c) When the automobile brakes to a stop is the "lost" kinetic energy converted mostly to heat or to some form of potential energy? 26 (a) A baseball weighs 5.13 oz. What is the kinetic energy, in joules, of this baseball when it is thrown by a major league pitcher at 95.0 mi/h? (b) By what factor will the kinetic energy change if the speed of the baseball is decreased to 55.0 mi/h? (c) What happens to the kinetic energy when the baseball is caught by the catcher? Is it converted mostly to heat or to some form of potential energy? 7 Two positively charged particles are first brought close to- gether and then released. Once released, the repulsion be- tween particles causes them to move away from each other a) This is an example of potential energy being converted into what form of energy? (b) Does the potential energy o the two particles prior to release increase or decrease as the distance between them is increased. 8 For each of the following processes, does the potential en ergy of the object(s) increase or decrease? (a) The distanc between two oppositely charged particles is increased (b) Water is pumped from ground level to the reservoir of water tower 30 m above the ground. (c) The bond in a chlorin molecule, Cl,, is broken to form two chlorine atoms. What is the kinetic energy and velocity of the aluminur sphere in Problem 1.4 at the moment it hits the ground? (A sume that energy is conserved during the fall and that 100 of the sphere's initial potential energy is converted to kinet energy by the time impact occurs.) What is the kinetic energy and velocity of the silver sphe in Problon
(c) When the automobile brakes to a stop is the "lost" kinetic energy converted mostly to heat or to some form of potential energy? 26 (a) A baseball weighs 5.13 oz. What is the kinetic energy, in joules, of this baseball when it is thrown by a major league pitcher at 95.0 mi/h? (b) By what factor will the kinetic energy change if the speed of the baseball is decreased to 55.0 mi/h? (c) What happens to the kinetic energy when the baseball is caught by the catcher? Is it converted mostly to heat or to some form of potential energy? 7 Two positively charged particles are first brought close to- gether and then released. Once released, the repulsion be- tween particles causes them to move away from each other a) This is an example of potential energy being converted into what form of energy? (b) Does the potential energy o the two particles prior to release increase or decrease as the distance between them is increased. 8 For each of the following processes, does the potential en ergy of the object(s) increase or decrease? (a) The distanc between two oppositely charged particles is increased (b) Water is pumped from ground level to the reservoir of water tower 30 m above the ground. (c) The bond in a chlorin molecule, Cl,, is broken to form two chlorine atoms. What is the kinetic energy and velocity of the aluminur sphere in Problem 1.4 at the moment it hits the ground? (A sume that energy is conserved during the fall and that 100 of the sphere's initial potential energy is converted to kinet energy by the time impact occurs.) What is the kinetic energy and velocity of the silver sphe in Problon
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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1.26 (a)
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