Physics, 07.12.2020 17:30 anilauferc
1. Un automóvil tiene una aceleración muy alta. Partiendo del reposo, su velocidad puede, en
promedio, aumentar 7.31 m/s cada segundo, hasta alcanzar el valor de 27.8 m/s, equivalentes a 100
km/h.
a) ¿Cuánto tiempo necesita para alcanzar la velocidad de 100 km/h, partiendo del reposo?
b) Suponiendo que su aceleración es constante, ¿qué distancia recorre en este movimiento
acelerado?
c) ¿Puedes decir, sin hacer ningún cálculo, qué parte de la distancia calculada en b) ha recorrido el
automóvil hasta el momento en que su velocidad era de 50 km/h?
Answers: 2
Physics, 22.06.2019 05:10
Total solidification times of three casting geometries are to be compared: a sphere, a cylinder, in which the length-to-diameter ration - 1.0, and a cube. volume = 1000 cm^3 for all three shhapes, and the same casting alloy is used. a) determine the solidification times of each geometry b) based on the results of part (a), which geometric element would make the best riser? c) if the mold constant = 3.5 min/cm^2 in chvorinov's rule, compute the total solidification time for each casting.
Answers: 3
Physics, 22.06.2019 14:30
What distance does a car travel as its speed changes from 0 to 20 m/s in 17 s at constant acceleration?
Answers: 1
Physics, 22.06.2019 18:30
Aballoon is rising vertically upwards at a velocity of 10m/s. when it is at a height of 45m from the ground, a parachute bails out from it. after 3s he opens his parachute and decelerates ata a constant rate 5m/s.when. (a) what was the height of the parachutist above the ground when he opened his parachute? (b)how far is the parachutist from the balloon at t=3s? (c)with what velocity does the parachutist hit the ground? (d)after how long does the parachutist hit the ground after his exist from the balloon?
Answers: 3
Physics, 23.06.2019 00:00
You notice the birds sitting on the electrical wires which of the following explain why the birds don't get shocked
Answers: 2
1. Un automóvil tiene una aceleración muy alta. Partiendo del reposo, su velocidad puede, en
promed...
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