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A spaceship is visiting Planet X. While descending to the surface,its rockets produce 25 kN of upward thrust and the spaceship%u2019s speed decreases at a rate of 0.15 m/s2 . Following the completion of its mission, the spaceship lifts off to return to its home planet. While leaving Planet X%u2019s surface, the rockets produce 75 kN of upward thrust and the spaceship%u2019s speed increases at a rate of 0.50 m/s2. 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.
Two charged particles of equal magnitude (+Q and +Q) are fixed at opposite corner of a square lying in a plane. What is the direction of the force on the test charge due to the two other charges
A parallel-plate capacitor is made from two plates 12.5 cm on each side and 4.20 mm apart. obtain how much energy will be stored in the capacitor
A typical power plant uses some fuel as the source of heat (QH) to drive a heat engine that does work (W) to drive a generator that is connected to the electrical grid.What is rate of flow and How do we find the power
You can think of the work?kinetic energy theorem as a second theory of motion, parallel to Newton's laws in describing how outside influences affect the motion of an object. Use the work-kinetic energy theorem to find the net work that is done on t..
A student moves a box of books by attaching a rope to the box and pulling with a force of 90.0 N at an angle of 30.0 degrees. Find the acceleration of the box
A bat emits a sound whose frequency is 91.20 kHz. The speed of sound in air at 20 degrees Celcius is 343m/s. However the air temperature is 38.8 degrees Celcius, so the speed of sound is not 343m/s. imagine that air behaves like an ideal gas, and ..
Find out the maximum altitude reached by the rocket.
A mortar* crew is positioned near the top of a steep hill. Enemy forces are charging up the hill and it is necessary for the crew to spring into action. How fast will the shell be traveling when it hits the ground
A particle with a charge of -1.5uC and a mass of 2.5x10-6 kg is released from rest at point A and accelerates toward point B, arriving there with a speed of 42 m/s. The only force acting on the particle is the electric force. (a) Which point is at..
If the bullet buries itself in the block, find out how far along the ground that the block lands from the base of the table.
A 36.0 kg uniform beam is attached to a wall with the hinge while its far end is supported by a cable such that the beam is horizontal.
A Ball begins rolling at the left and has just suffient energy to climb up to point C, which is the top of the hill on the right
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