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A rocket is fired from the ground as a projectile. At the top of its trajectory, at a horizontal distance of 260m from the launch point, the rocket breaks into two pieces: One fragment having1/3 of the mass of the original rocket and the remaining piece having 2/3 of the original mass. The smaller piece falls straight down to the ground beneath the break up point while the larger continues on. At what horizontal distance from the launch point does the larger fragment land?
(hint: by one dimensional kinematics, both pieces should hit the ground at the similar time)
A satellite that weighs 4900 N on the launchpad travels around the earth's equator in a circular orbit with a period of 1.667 h. Calculate the magnitude of the earth's gravitational force on the satellite
A horizontal force of magnitude F = 149 N is used to push a box of mass m = 5 kg from rest a distance d = 13 m up a frictionless incline with a slope q = 22°. How fast is the box moving after this displacement
A plastic cylinder of length 36 cm its ends ground to convex (from the rod outward) spherical surfaces, each having radius of curvature 16 cm. How far will the image of the object lie from the right end
a certain substance has a dielectric constant of 3.06 and a dielectric strength of 15.0 mvm. if it is used as the
A 11.9-g mass is suspended 1.47 cm above a nonconducting flat plate, directly above an embedded charge of q. If the mass has the same charge, q, how much must q be so that the mass levitates (just floats, neither rising nor falling)? If the charge..
A bullet is fired through a board 10.0 cm thick in such a way that the bullet's line of motion is perpendicular to the face of the board. Find the total time the bullet is in contact with the board
You (mass 90 kg) are a spyentering a high-security building through a skylight 20 m above thef loor. Your partner is lowering you on a rope (total mass 10 kg,total length 25 m) and you need to tell her when to stop lowering you. You can’t shout up to..
An engine absorbs 200 Joule of energy from a hot reservoir and exhausts 160 Joule to reservoir at 300Kelvin. Determine the minimum temperature of the hot reservoir
A concave shaving mirror has a radius of curvature of +39.9 cm. It is positioned so that the (upright) image of a man's face is 1.54 times the size of the face. How far is the mirror from the face
Two resistors of 7.0kohms and 10.0kohms are connected in series. A 4.0kohm resistor and a 9.0kohm resistor are connected in series to each other, What is the equivalent resistance of the resistors
Use this technique to find formula for the intensity of a sound, in terms of sound level and the reference intensity. There will be a quantity involved in the calculations. When you enter your answer, leave off the unit.
Water flows over a section of Niagara Falls at the rate of12.9 x10e6 kg/s and falls 54m. How much power is generated bythe falling water
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