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You are trying to land your spaceship upon an unknown planet. As you descend vertical towards the surface of the planet you note that you experience a downward acceleration of 0.15 m/s2 when your engines are providing 6850 N of upward thrust. In order to maintain a stable speed of descent you have to increase the upward thrust to 7955 N.
a) Find the weight of the spaceship?
b) Determine the mass of the spaceship?
c) Find the approximate gravitational acceleration provided by the planet?
d) After exploring the surface, you prepare for vertical liftoff. You need to travel a distance of 58 kilometer in a time of 11 minute before you run out of fuel. Find what minimum constant magnitude of thrust must the engines provide?
Estimate how much power is saved if the voltage is stepped up from 240 V to 1200 V and then down again, rather than simply transmitting at 240 V
1 electric field lines there are two uniform electric fields e1 is in the positive x direction with 100 nc and e2 is in
Trin has been prescribed bi-focals because his near point is at 2 m instead of 25 cm and his far point is at 10 m instead of infinity. Describe what's wrong with his eyes
The top plate is illuminated by monochromatic light of wavelength 544.1 nm. Determine number of dark parallel bands crossing the top plate (including the dark band at zero thickness along the edge of contact between the two plates).
T thin lense with a focal length of 50 cm is placed 100 cm from an object. How far behind the lense should we place a screen
A charged capacitor is connected to an ideal inductor. At time t = 0, the charge on the capacitor is equal to 6.00 µC. What is the amplitude of the current at that same instant
A 390 nm thick film floats on a puddle of water. When illuminated normally with 700 nm light there is no reflection, but 400 nm light is strongly reflected. What is the film's index of refraction
A thin double convex lens is to focus the image of an object onto a screen so that the image is life-sized. What is the distance d from image to screen
An object at rest on a flat, horizontal surface explodes into two fragments, one seven times as massive as the other. How far does the lighter fragment slide
A ball with I=(2/5)MR2 is placed on a plane inclined atan angle θ. The plane is accelerated upward (along its direction) with acceleration a. For what value of a does the CM(center of mass) of the ball not move?
a the potential difference between the plates of a 2.90-microf capacitor is 80 v. how much energy is stored in the
You are assigned the design of a cylindrical, pressurized water tank for a future colony on Mars, Find the net downward force on the tank's flat bottom, of area 2.50m^2 , exerted by the water and air inside the tank and the air outside the tank
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