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Homework Help for Physics
Physics is the study of matter, motion, energy and force. It is a fundamental science that seeks to understand and explain the universe around us and beyond.
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A rocket has total mass Mi=360 kg, including Mf=330 kg of fuel and oxidizer, In interstellar space, it starts from rest at the position x=0, turns on its engine at time t=0, and puts out exhaust with relative speed ve=1500 m/s at the constant rate k=2.50 kg/s. The fuel will last for a burn time of Tb=Mf/k=330 kg/(2.5 kg/s)=132 s.
Show that during the burn the velocity of the rocket as a function of time is given by
1. A graph of the x component of the electric field as a function of x in a region of space is shown in figure. The scale of the vertical axis is set by Exs = 20.0 N/C. The y and z components of the electric field are zero in this region. If the electric potential at the origin is 30 V, what is the electric potential (in V) at x = 4.0 m ?
(1) -10(2) 70(3)0(4) -40 (5) 30
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