How much heat is required to heat 4.05 - kg of copper from 69 °C to 227 °C in a time 5.75 minutes? The specific heat of copper is 0.093 cal /(g °C). Provide the answer in units of calories.
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- A factory worker pushes a 24.0 kg crate a distance of 8.0 m along a level floor at constant velocity by pushing horizontally on it. The coefficient of kinetic friction between the crate and floor is 0.24.1. 0.065 kg object is attached to a spring is a spring constant of Joo N/m. The other end of the spring to attached to a wall an Such a way that 3+ rests on a frict'sonless horizontal surface. so that it expreñiences sample Ă 4 exerted on the spring force harmorisc motson. a. tiow much work would be done on the spring to compress24 -by. 11 cm. b. Assuming that there so no friction. describe the energy conversaçons that take place, being sure to explain the location of maximum elastic potential energy and maximum k²netic energy. c. \Nhat will the speed of the object be when it's passing the point of being compressed by only 5.5 cm?. (Assume that the mass of the Spring negiigable.)Don't use chat gpt It Chatgpt means downvote please
- Sir surely upvote you.A circus man whose mass is 60 kg is standing on a platform 20 mabove the ground while holding a trapeze which is 10 m long that isattached to the ceiling which is 26 m above the ground. The circus manswings and lets go of the upswing. Determine the potential energyrelative to the ground in each of the following positions of the circus man:a. 20.0 meters on the platformb. 16.0 meters at the bottom of the swingc. 18.0 meters and lets go of the trapezeConservation of energy, means the sum of the kinetic and potential energies doesn't equal to the original kinetic energy. True O False