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A landing craft approaches the surface of Penitgy, a planet in a far-away galaxy. The landing craft has two engines attached to the bottom, each angled 30 from the vertical. The landing craft is pointing upward, as shown. A total upward thrust of 14460 N is required for the landing craft to descend at constant speed. When the landing craft has a total upward thrust of 1460 N, the landing craft%u2019s acceleration is ?1.42 m/s2, (its speed will be increasing if its velocity is downward toward the surface of planet Penitgy).
If the craft is descending vertically downward, what is the mass of the landing craft?
A rectangular fish tank measuring 0.85 m \times 0.45 m is filled with water to a height of 59 cm. What is the gauge pressure on the bottom of the tank
A car carrying a 77-kg test dummy crashed into a wall at 27m/s and is brought to rest in 0.1 s. demonstrate that the average force exerted by the seat belt on the dummy is 18,760N.
You have 31m of wire, which you want to use to construct a 45cm diameter coil whose magnetic field at its center will exactly cancel the earth's field of 0.55 gauss
A supersonic jet passes directly overhead at an altitude of 11,585 m, traveling at 680 m/s, or mach 2. How much time elapses before you hear the sonic boom
What is the required resistance of an immersion heater that will increase the temperature of 0.50 kg of water from 10.0°C to 50.0°C
A sled is dragged along a horizontal path at a constant speed of 1.5 m/s by a rope that is inclined at an angle of 30.0° with respect to the horizontal, How much work is done by the rope on the sled
A flat horizontal surface with an area of 505 cm2 is inside a uniform electric field of 1.40×104 N/C. What is the electric flux through the surface
Closed gaussian surfuce in the shape of a cube of edge length 2.00 m, with one corner at x=5.00m, y=4.00m, what is the net charge contained by the cube
A whistle of frequency 500 Hz moves in a circle of radius 1 m at3 rev/s. What are the maximum and minimum frequencies heard by astationary listener
Find the relationship between the length h and width a of a regular right triangular prism such that the prism is equally likely to land on each face when: A. dropped from a great height in th air.
You are to throw a ball with a speed of 13 m/s at a target that is 4.5 m above the level at which you release the ball. At what angle above the horizontal must you throw the ball
A police van moving on a highway with a speed of 30 kmph fires a bullet of a theif's car speeding away in the same direction with a speed of 192 kmph.
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