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You are part of a search-and-rescue mission that has been called out to look for a lost explorer. You've found the missing explorer, but you're separated from him by a 200-m-high cliff and a 30-m-wide raging river. To save his life, you need to get a 5.0 kg package of emergency supplies across the river. Unfortunately, you can't throw the package hard enough to make it across. Fortunately, you happen to have a 1.0 kg rocket intended for launching flares. Improvising quickly, you attach a sharpened stick of negligible mass to the front of the rocket, so that it will impale itself into the package of supplies, then fire the rocket at ground level toward the supplies.
Part A: What minimum speed must the rocket have just before impact in order to save the explorer's life?
Coherent light with wavelength 591nm passes through two very narrow slits, and the interference pattern is observed on a screen a distance of 3m from the slits. The first-order bright fringe is a distance of 4.84mm from the center of the central b..
The position of a particle moving along the x axis depends on the time according to x=ct^2-bt^3 where x is in meters, what distance does the particle move and what is its displacement
The Hubble Space Telescope orbits the Earth at an altitude of approximately 612 km. Its mass is 11,100 kg, What is the Hubble's total energy
A blacksmith drops a 500 g iron horseshoe into a bucket containing 25 kg of water. what is the equilibrium temperature of the system
A jogger on a circular track that has the radius of 0.150km runs a distance of 1.10km. What angular distance does the jogger covers in radians.
A crane weights 10500kg and the wrecking ball is 800kg. the arm of a crane can extend to a lenght of 22m. Whats the max speed of the wrecking ball
Car A uses tires for which the coefficient of static friction is 1.1 on a particular unbanked curve. The maximum speed at which the car can negotiate this curve is 25 m/s. Car B uses tires for which the coefficient of static friction is 0.65 on the s..
A 100-W lightbulb has a resistance of about 12 ?when cold (20 ?C) and 156? when on (hot). Estimate the temperature of the filament
A 125-cm-long, 5.0 g string oscillates in its n = 2 mode with a frequency of 190 Hz, What is the wavelength in the string
Suppose now that the apparatus is sealed, and the temperature rises to 40.0o C. Find the pressure inside the apparatus now
How various revolutions per minute would a 21 -diameter Ferris wheel need to make for the passengers to feel "weightless" at the topmost point.
What is the centripetal force that would be required to keep a 4.0 kg mass moving in a horizontal circle with a radius of 0.80 meters at a speed of 6.0 meters/second?
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