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A model rocket blasts off from the ground, rising straight upwardwith a constant acceleration that has a magnitude of 80.4m/s2 for 1.72 seconds, at which point its fuel abruptlyruns out. Air resistance has no effect on its flight. What maximumaltitude (above the ground) will the rocket reach?
A railroad locomotive with a mass of can exert a force of. At what rate can it accelerate when pulling a train
A mirror is to be used to project a 2.00 tall image on a screen which is 4.70 from the mirror. What magnification is necessary to accomplish this task
A pair of oppositely charged parallel plates is separated by 5.44 mm. A potential di?erence of 631 V exists between the plates. What is the strength of the electric field between the plates
A sailboat leaves a harbor and sails 1.80 km in the direction 65 degrees sounth of east, the boath then sails 1.1 km in the direction 15 degrees north of east. the trip takes 15 minutes. what is the magnitude and direction.
Use the free electron model to estimate the gap parameter ?0 and the transition temperature Tc for (a) aluminum (1.81 x 10^29 electrons/m3 ) and (b) zinc (1.31 x 10^29 electrons/m3 ).
Monochromatic light is incident on a grating that is 75 mmwide and ruled with 50,000 lines. What is the wavelength of the incident light
Julie drives 100 mi to grandmother's house. On the way, Julie drives half the distance at 40 mph, How long does the return trip take
Calculate the absolute pressure at the bottom of a fresh-water lake at a depth of 29.2 m. Assume the density of the water is 1.00 103 kg/m3 and the air above is at a pressure of 101.3 kPa. Pa (b) What force is exerted by the water on the window of an..
Two positive point charges are a fixed distance apart. the sume of their charges is Qt. what charge must each have in order to a) mazimize the electric force between them, and b) minimize it?
A group of particles is traveling in a magnetic field of unknown magnitude and direction. What is the direction of this the magnetic force
A ball is thrown horizontally from a cliff at a speed of 15 m/s. What is the speed one second later
Light of wavelength 650 nm falls on a 0.31 mm wide slit and forms a diffraction pattern on a screen 1.5 m away. Find the width of the central maximum
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