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A group of students launches a model rocket in the vertical direction. Based on tracking data, they determine that the altitude of the rocket was 27.5 m at the end of the powered portion of the flight and that the rocket landed 16 s later. Knowing that the descent parachute failed to deploy so that the rocket fell freely to the ground after reaching its maximum altitude and assuming that g = 9.81m/s2, determine
(a) The speed v1 of the rocket at the end of powered flight,
(b) The maximum altitude reached by therocket.
The Baretta Model 92S has a barrel 127 mm long. determine how long is the bullet in the barrel?
A rectangular loop of wire lies in the plane formed by the line y=x and the z-axis. The square has area of 280cm^2 so that A= (39.6i - 39.6j) x 10^-3. A magnetic field B= 0.32T points in the negative x direction.
A thin spherical shell rolls down an incline without slipping. If the linear acceleration of the center of mass of the shell is0.27g, what is the angle the incline makes by the horizontal?
A 60. kg student jumps from the 10. meter platform at EKU'sswimming complex in to the pool below. Determine her PEg at the top of the platform.
A standardized biological microscope has an 8.0--focal-length objective. What focal-length eyepiece should be used to achieve a total magnification of.
A 50-g of ice cube at 0C is heated until 45g has become water at 100C and 5.0g has become steam at 100C. How much energy was needed to accomplish to transformation?
Find the kinetic energy at takeoff
A sparrow's maximum air speed (speed relative to the air around it) is 20 m/sec. She wants to fly to her nest which is due north, but there is 10 m/sec wind blowing from west to east. What direction should she fly?
A 43 power refracting telescope (wherepower is the angular magnification) has an eyepiece with a focallength of 4.2 cm. How long is the telescope
The partial pressure of CO2, in the expired air is 25 mm Hg and in the alveolar air it is 39 mm Hg. For an expired volume of 550ml, calculate the dead space volume
It takes a student t = 7.6 s to push a block m = 11 kg at a constant velocity over a distance of d = 8.2 m. Write an expression for the energy required to move the block along this path in terms of the variables provided
A 111 gram apple falls from a branch that is 3.5 meters above the ground, How much time elapses before the apple hits the ground
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