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A rocket of mass m is fired vertically upwards. The interaction between its engine and the surroundings produces an upward force of magnitude F=Fmax-Ct^2 (where t is in seconds) until F=0 then the engine shuts off. Determine the speed of the rocket at the instant the enine shuts off, voff, as a function of Fmax, C, m, and g.
Water flowing through a 1.7cm -diameter pipe can fill a 100L bathtub in 5.3min. compute the speed of the water in the pipe
In reaching her destination, a backpacker walks with an average velocity of 1.19m/s, due west. This avg velocity results bc she hikes for 5.7 km with an avg velocity of 2.18 m/s due west, turns around, and hikes with an avg velocity of 0.511m/s du..
A wire is stretched between two posts. Another wire is stretched between two posts that are four times as far apart. The tension in the wires is the equal, and they have the same mass.
A high-frequency photon is scattered off of an electron and experiences a change of wavelength of 8.0×10-4 .At what angle should a detector be placed to detect scattered photon (relative to the direction of the incoming photon).
A cosmic ray travels 60 km through the earth's atmosphere in 380?s, How long does the journey take according to the cosmic ray
The jumping squirrel. A squirrel wants to jump from a point A on a branch of a tree to a point B on another branch. at what angle to the horizontal should he jump
Three resistors, 27, 49, and 79 , are connected in series, and a 0.55 A current passes through them. What is the potential difference across the three resistors
At t = 5 s, an object moving on the x-axis at x = 3 m is traveling at 8 m/s i. At t = 9 s, it is at x = 17 m and its velocity is -1 m/s i. Find the average acceleration for this interval
A Carnot engine takes an amount of heat QH = 111 J from a high-temperature reservoir at temperature TH = 1030 °C, Find the amount of work that is obtained from this process
You throw a ball vertically upward so that it leaves the ground with velocity 6.05 m/s. (a) What is its velocity and direction when it reaches its maximum altitude? magnitude m/s
An airplane, whose air speed is 380 km/hr, is supposed to fly in a straight line 23.0 degrees north of due east. A steady 100 km/hr is blowing from the north. Illustrate in what direction should the plane head realative to the earth?
A skier leaves the end of a horizontal ski jump at 22. m/s and falls 3.20 m before landing. how far horizontally does the skier travel in the air before landing
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