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An astronaut weighs 92.5 kg on earth. While floating in space he pushes the side of his spaceship with a force of 150 N for .20 seconds.
Find the change of momentum of the astronaut.
What is the momentum imparted to the spaceship by the astronaut's push?
If the spaceship has a mass of 2250 kg find the velocity of the spaceship and the velocity of the astronaut.
A wheel with radius 43.9 cm rotates 4.27 times every second. What is the tangential speed of a wad of chewing gum stuck to the rim of the wheel
q1. a cd has a playing time of 53.1 minutes. while the music starts the cd is rotating at an angular speed of 498
An elevator weighing 2500 N ascends at a constant speed of 8.0 m/s. How much power must the motor supply to do this?
q1. assume unpolarized light of intensity 197 wm2 falls on the polarizer in the figure and the angle in the drawing is
A ball is thrown from the edge of a cliff that is 10.0 meters high. The ball is thrown at 10.0 m/s at an angle of 45 degrees above the horizontal. Find the total time of flight
An electron and a positron each have a mass of 9.11 x 10-31 kg. They collide and both vanish, determine the energy of the electromagnetic radiation
Two C1 = 3.7 μF, C2 = 18.7 μF are charged individually to V1 = 14.2 V, V2 = 7.0 V. Calculate the final potential difference across the plates of the capacitors once they are connected
A 0.500-kg particle has a speed of 2.30 m/s at point A and kinetic energy of 7.40 J at point B a) what is its kinetic energy at pt A. b) what is its speed at pt B.
An object known to be made of copper (p=8.89 g/cm^3) and aluminum (p=2.7 g/cm^3) "weighs" 25 g in air but only 20 g in water. How much copper is in the object
a cylindrical water being filled with water at a rate of 4 cubic feet per second. Given that the water 20 ft in diameter how fast is the water level rising
A house has a floor area of 115 m2 and an outside wall that has an area of 24 m2. The earth's magnetic field here has a horizontal component of 2.50 e 10-5 T that points due north and a vertical component of 4.30 e 10-5 T that points straight down..
A uniform disk of radius 0.459 m and unknown mass is constrained to rotate about a perpendicular axis through its center. Find the mass of the disk
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