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A projectile is launched with a initial velocity of magnitude a at a angle B to the horizontal. Find its maximum vertical displacement, ignoring effects due to the air.
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. What is the mass of the spaceship
A plane normally takes 10 hours to travel 5, 500 miles. One day significant headwinds slow the plane down, how long will the entire trip take
Jack and Jill are on two different floors of their high rise office building and looking out of their respective windows. What is the height between the two window ledges
A jet engine emits sound uniformly in all directions, radiating an acoustic power of 2.91 × 105 W. calculate the corresponding sound intensity level
Consider a merry-go-round that has the form of a disc with radius 5.4 m and mass 160 kg. If five children, what is the total moment of inertia
A small object, which has a charge q = 7.4 µC and mass m = 9.85 10-5 kg, is placed in a constant electric field. Determine the magnitude of the electric field
A student drops a ball from the top of a tall building; the ball takes 3.1s to reach the ground. What is the height of the building
Bob walks 250 m south, then jogs 560 m southwest, then walks 250 m in a direction 25 degrees east of north. Find the direction of the displacement that will return Bob to his starting point by the most direct route
A 150 MW laser pulse is focused with a lens to a diameter of 4.99 ?m. What is the laser beam's electric field amplitude at the focal point
A block of mass m=1.8 kg slides along the inside of a hemispherical bowl of radius r=0.8 m. find the normal force on the block by the bowl
A drinking fountain shoots water about 14 cm up in the air from a nozzle of diameter 0.60 cm. What gauge pressure does the pump have to provide
A ball is thrown from the top of a building upward at an angle of 46 degrees to the horizontal and with an initial speed of 30m/s. the speed of the ball just before it strikes the ground
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