York to Los Angeles, a distance of about 5000 km. low fast must the rocket ship go to have its own h shortened by 1%?
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- A certain sandwich cookie contains 53 C of nutritionalenergy. (a) For what amount of time must you swim in order towork off three cookies if swimming consumes 540 C>h? (b) Insteadof swimming you decide to run for 45 min at a pace that works off850 C>h. How many cookies have you worked off?An electron is traveling at 5×105 m/s when it is 3 nm away from a proton. What is the speed of the electron if it escapes the proton to a location far away from it?a) What is the magnitude of energy (in MJ) that must be removed to freeze 377 L of water with a density of 999.8 Kg/m3 that is already at 0˚C [round your final answer to one decimal place]? {latent heats of water: Lf = 33.5 × 104 J/kg, and Lv = 22.6 × 105 J/kg} b) The magnitude of energy that must be added to melt the same mass of ice (already at 0˚C) would be greater than the amount of energy that had to be removed in order to freeze it. TRUE OR FALSE {latent heats of water: Lf = 33.5 × 104 J/kg, and Lv = 22.6 × 105 J/kg}
- -) x(- f. 3.0 acres/hour x ft²/minuteThe sun generates energy through nuclear fusion, which converts mass intoenergy. If the sun radiates 3.8 × 1026 W of power, calculate the rate at which the sun loses mass (i.e., kg/s). _________×109kg/s ? Compare the energy produced per kg of fuel for the combustion of coal, d-d fusion and d-t fusion.d-d: __________ ×107 MJ/kg?d-t: ___________×108 MJ/kg ? The age of the sun has been estimated at 4.6 billion years. If it has radiatedenergy at the same rate throughout its lifetime, 3.8×1026 W and if its current mass is1.989×1030 kg, what fraction of its original mass has been lost _____________% ?If p/m is .9c,what is v in terms of c?