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A model rocket blasts off from the ground, rising straight upward with fix acceleration that has a magnitude of 86.7m/s2 for 1.79 sec, at which point its fuel abruptly runs out. Air resistance has no effect on its flight. Find what maximum altitude will the rocket reach?
A person is making homemade ice cream. She exerts a force of magnitude 22 N on the free end of the crank handle, and this end moves in a circular path of radius 0.28 m. The force is always applied parallel to the motion of the handle. If the handl..
A train moving at 28.5 m/s passes a platform, sounding a horn with a frequency of 1250 Hertz. Obtain the frequency heard by an observer
A mass of 60.2 g of an element is known to contain 9.42 x 1023 atoms. What is the atomic mass of the element
the speed of light in a material is 0.41 c. what is the critical angle of a light ray at the interfacce between the material and a vacuum
an axon is the relatively long tail-like part of a neuron or nerve cell. the outer surface of the axon membrane
An artificial satellite is in a circular orbit around a planet of radius r = 5.55 x 103 km at a distance d=520km from the planet's surface. What is the average density of the planet
an isolated cylinder contains 0.3 m3 of steam divided into two closed chambers by a piston that can operate
The blackbody radiation emitted from a furnace peaks at a wavelength of 2.5 10-6 m (0.0000025 m). What is the temperature inside the furnace
A 348 g mass is hung on a spring with a spring constant of 25 N/m. Find the stretch of the spring when the mass is in equilibrium
A galaxy located at a distance D of 1 million light years away has an angular size A= 5 degree. What is the approximate diameter of this galaxy
a 10-cm-long wire is pulled along a u-shaped conducting rail in a perpendicular magnetic field. the total resistance of
An electron moves from point A where the potential is Va=+20.0kV to point B where the potential is Vb=- 40.0 kV. what was the change of the system's electric potential
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