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An aircraft with a mass 281 kg is accelerated at 9.1 m/s2 for 5 seconds, at which time the aircraft launches. Assume the acceleration is constant. What is the force required to launch the aircraft?
An ultraviolet lamp emits light of wavelength 400nm at the rate of400W. An infrared lamp emits light of wavelength 700nm, also at therate of 400W. Which lamp emits photons at the greater rate
If the potential energy of a system is P =mgh and the kinetic energy of the system is =1/2mv^2. If the system is frictionless, derive an equation for the final velocity of the cart when it reaches to the position B.
Two charges of equal magnitude exert an attractive force of 7.5×10-4 N on each other. If the magnitude of each charge is +2.4? C, how far apart are the charges
Estimate the angle of incline by assuming that all of the increased power output goes into overcoming the force of gravity.
A student on a piano stool rotates freely with anangular speed of 3.16 rev/s. The student holds a 1.50 kg mass ineach outstretched arm, 0.794 m from the axis of rotation. Calculate the final kinetic energy of the system
A sealed jar contains only air at room temperature and atmospheric pressure. To what temperature should the air be heated in order for its pressure to double? Give a number, and include units.
A 1.7 kg block and a 2.3 kg block are attached to opposite ends of a light rope. Find the acceleration of the lighter block
Monochromatic light of wavelength 675 nm falls on a slit. If the angle among the first bright fringes on either side of the central maximum is 21.5°, estimate the slit width.
A positively charged oil drop is injected into a region of uniformelectric field between two oppositely charged, horizontallyoriented plates spaced 16 cm apart.
A uniform electric field with a magnitude of 250N/C is directed in the positive x direction. A 12uC charge moves from the origin to the point (20.0 cm, 50.0 cm). what is the change in electrical potential energy of the system as a result of the ch..
A heat engine is composed of of a monatomic ideal gas which runs in the following cycle, What is the efficiency of this heat engine and What is the temperature at point B
a solid sphere of radius r 40cm has a total positive charge of 26 mc uniformly distributed throughout its volume the
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