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An airplane is flying with a velocity of 240 m/s at an angle of 30.0° with the horizontal. When the altitude of the plane is 2.4 km, a flare is released from the plane. The flare hits the target on the ground. What is the angle ?
In extremely cold weather conditions where the inside thermostat is set to 27 C and the outside temperature is -20 C, How much energy might you lose in one week
An earth satellite moves in a circular orbit with an orbital speed of 5900m/s. Find the time of one revolution of the satellite
Source charge Q1= -3.00nC located at (0, 5.00mm). Source charge Q2= +2.00nC located at the origin. Find the Magnitude & direction of the net electric field
A TV remote control emits IR light. If the detector on the TV set is not to react to visible light, What is the shortest-wavelength light that can strike silicon without causing electrons to jump from the valence band to the conduction band
The work function of an element is 2.2 eV. Photons of a certain energy are found to eject electrons with a kinetic energy of 3 eV. What is the speed of the ejected electrons
A man walks south at a speed of 2.00 m/s for 16.0 minutes. He then turns around and walks north a distance 2000 m in 15.0 minutes. What is the average speed of the man during his entire motion
The adiabatic, aergonic throttling calorimeter is a device by which the quality of wet steam flowing in a pipe may be determined. Determine (a) the enthalpy of the steam in the pipe
A railroad hopper car has a mass of 50000 kg when empty and contains 50000 kg of coal. How fast does the car travel after all the coal is dumped
A ball is thrown horizontally from a 12 m high building with a speed of 8.0 m/s. How far from the base of the building does the ball hit the ground
Consider a stainless steel annular disk with an outer radius 56 mm and inner radius 7.7 mm. What is the moment of inertia of the stainless steel annular disk
Points A, B, and C are at the corners of an equilateral triangle of side 5 m. Equal positive charges of 5 µC are at A and B, What is the potential at point C
An object is determined to have an apparentm mass of 882 g in air and 643 g when immersed in water. What is the density of the object
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