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A 70-kg astronaut floating in space in a 110-kgMMU (manned maneuvering unit) experiences an acceleration of 0.029 m/s2 when he fires one of the MMU's thrusters.
Part A If the speed of the escaping N2 gas relative to the astronaut is 490 m/s, how much gas is used by the thruster in 5.0 s?
Part B What is the thrust of the thruster?
Julie throws a ball to her friend Sarah. The ball leaves Julie's hand a distance 1.5 meters above the ground with an initial speed of 13.0 m/s at an angle 52.0 degrees; with respect to the horizontal. Sarah catches the ball 1.5 meters above the gr..
A large reflecting telescope has an objective mirror with a 10.0 m radius of curvature. what angular magnification does it produce
A wire has a mass per unit length of 0.500 g/cm. what is the magnitude and direction of the minimum magnetic field
A 630-Hz sound travels through pure hydrogen. What is the speed of sound in hydrogen
One way to measure on another planet or moon by remote sensing is to measure how long it takes an object to fall a given distance. A lander vehicle on a distant planet records the fact that it takes 3.17 for a ball to fall freely 11.26.
What is magnitude of the speed of the boat
What mass (in grams) of steam at 100°C should be mixed with 257 g of ice at its melting point, in the thermally insulated container, to produce liquid water at 84.0°C.
X rays with a wavelength of 0.14 nm undergo first-order diffraction from a crystal at a 70^\circ angle of incidence. What is the angle of second-order diffraction
Scientists in a laboratory produce a sound wave in a simulated environment (air) with a velocity of 448 m/s. What is the temperature (in Kelvin) of the environment
A mass is stretched 4 centimeters from the equilibrium position of a spring. If the displacement is doubled, what can be concluded about the restoring force? A. It is halved. B. It is doubled. C. It stays the same. D. It is increased by 4. E. It i..
A wire loop that encloses an area of 10 cm2 has a resistance of 5 Ohms. How much charge flows past a point in the wire
A 1.80x10^2 kg piano is being lifted at a steady speed from ground level straight up to an apartment 18.00 m above the ground. The crane that is doing the lifting produces a steady power of 4x10^2 W. How much time does it take to lift piano.
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