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A 75 kilogram astronaut is space walking outside the space shuttle and pushes a 400 kilogram satellite away from the shuttle at 1.5 m/s. Find the resulting speed of the astronaut back towards the shuttle?
A 115 mCi radioactive tracer is made in a reactor. When delivered to a hospital 16 hours later its activity is 95 mCi. For how long (in hours) is the sample usable
What is its velocity at impact? What will its average velocity be? What will its average speed be.
A spring with spring constant k is attached to mass M. The spring is horizontal and mass M sits on a horizontal frictionless table. Find the equilibrium position of the masses
A small block sits on the top of a fixed frictionlesshemisphere of radius R = 9 meters. If the block is given ainitial horizontal velocity of v = 7 m/s. determine the speed of the block at this point
A particle moves on the x axis from x=0 to x=3. A force of magnitude F(x) = 3x3 + 4x acts on the particle. Calculate the work done by the force
The pressure of a helium gas cylinder is 29.7 atm. After several balloons have been blown up the pressure is decreased to 5.68 atm. What fraction of the original gas remains in the cylinder?
An X-ray photon is scattered at an angle of θ =180.0° from an electron that is initially at rest. Find the wavelength of the incident X-ray photon
A diffraction grating with 2.507 X 10^3 lines/cm is used to examine the sodium spectrum. a) calculate the angular separation of the two closely spaced yellow lines of sodium (588.485 nm and 589.067 nm) in the first order. Answer in units of degree..
A swimmer who is able to swim a speed of 1.4m/s in still water, starts to swim Southward directly across a 2.8km wide river. How long does it take the swimmer to cross the river
A wheel turns through 34 rev as it slows from an angular speedof 2.5 rad/s to a stop. What is the angular acceleraton.
A compound microscope has a barrel whose length is 16.4 cm and an eyepiece whose focal length is 1.7 cm. The viewer has a near point located 25 cm from his eyes. What focal length should the objective have so the angular magnification of the microsco..
An object at rest on a flat, horizontal surface explodes into two fragments, one 5 times heavier than the other. Find how far does the lighter fragment slide
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