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A spaceship is heading toward Planet X. While descending to the surface, its rockets produce 25 kN of upward thrust and the spaceship's speed decreases at a rate of 0.15 m/s^2 . Following the completion of its mission, the spaceship lifts off to return to its home planet. While leaving Planet X's surface, the rockets produce 75 kN of upward thrust and the spaceship's speed increases at a rate of 0.50 m/s^2. What is the mass of the spaceship and the acceleration due to gravity at the surface of Planet X? Assume that the acceleration due to gravity is constant.
A storage tank at STP contains 15.0 kgof nitrogen (N2). What is the volume of the tank
In a uniform electric field of magnitude E, the field lines cross through a rectangle of area A at an angle of 77.0° with respect to the plane of the rectangle
NASA launches a satellite into orbit at a height above the surface of the Earth equal to the Earth's mean radius. The mass of the satellite is 740 kg. How much gravitational force does the satellite experience
A man wishes to vacuum his car with a canister vacuum cleaner marked 550 W at 120 V. If the resistance of each of the two conductors of the extension cord is 0.900 Ohm's, what is the actual power delivered to the cleaner
One mole of an ideal monatomic gas is taken through the cycle shown in the figure. Assume that p = 3 p0, V = 3 V0, p0 = 1.01×105 Pa, and V0 = 0.0250 m3. Calculate the energy added as heat during stroke abc
A wheeled cart is shoved up an inclined plane with an unknown initial speed. What was the cart's initial speed
A bullet, m kg traveling horizontally at 300 m/s hits a block of wood, mass 10kg. What was the mass of the bullet
A very thin bubble is floating in air. If the bubble strongly reflects green light (? = 520 nm), what is the minimum possible thickness of the bubble
A silver coin lies on the bottom of a clear lake 5.5 m deep. The coin is 4 cm in diameter. What is the angle of refraction
A ferry boat transports tourists among three islands. It sails from the first island to the second island, 4.7 km away, in a direction 37.0° north of east. It then sails from the second island to the third island in a direction 69.0° west of north..
An automobile transmission has 175 hp of power entering from the engine, 167 hp leaving to the wheels, while losing 5000 Btu/hr to the surroundings as heat.
You make a capacitor by cutting the 14.5 cm--diameter bottoms out of two aluminum pie plates, separating them by 3.30mm , What's the capacitance of your capacitor
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