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A 57 kg astronaut (including spacesuit and equipment), is floating at rest a distance of 9 m from the spaceship when she runs out of oxygen and fuel to power her back to the spaceship. She removes her oxygen tank (3.0 kg) and flings it away from the ship at a speed of 15 m/s relative to the ship.
At what speed relative to the ship does she recoil toward the spaceship? Express your answer to two significant figures and include the appropriate units.I tried doing (3.0 kg * 15 m/s)/(57 kg) = v_f, but it's wrong.
What was the temperature of the water before the insertion of the thermometer.
question the spectrum of mercury contains a line at 435.8 nm in the blue region of visible light. what is the
a 1.8-g balloon is filled with helium gas. when a mass of 4.8 g is attached to the balloon the combined mass hangs in
In the annual battle of the dorms, students gather on the roofs of Jackson, A second balloon launched at the same angle hits the edge of Walton's roof. Find the initial speed of this second balloon
A box of mass 52 kg is pushed up an incline that has a total length of 7.0 m and is tilted 21° away from the horizontal. What is the work done by the weight on the box
The density of the water in the Great Salt Lake (Utah) is greater than ocean water because of the much higher salt content. Find the density of the water in Great Salt Lake
Practical steam engines utilize 450°C steam, which is later exhausted at 250°C. What is the overall efficiency of the two engines
in 1910 rutherford performed a classic experiment in which he directed a beam of alpha particles at a thin gold foil.
A ball of mass m=1.5kg is placed on the platform supported by a spring with k=250 n/m. initial velocity of the ball is 0. find how far down will move the platform. do the same if ball is thrown on the platform with velocity 10 m/s directed downwar..
A converging lens with a focal length of 17.5 cm and a diverging lens are placed 25.5 cm apart, with the converging lens on the left, What is the focal length of the diverging lens
The circuit shown in the drawing is constructed with six identical resistors and an ideal battery. When the resistor R4 is removed from the circuit, Determine the resistance of each resistor
Estimate is in constant FY 1995 dollars, while the SPANIEL program cost estimate is in constant FY 1999 dollars. Which one of the following is the most valid way of comparing the costs of these two programs?
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