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A rocket accelerates vertically upwards by ejecting high-speed gases vertically downwards. At the instant shown the weight of the rocket is W and the magnitude of the force the rocket exerts on the gases is T. The magnitude of the net force on the rocket is
A. W.B. T.C. T + W.D. T - W.
the plates of a fabry-perot interferometer have a reflection coefficient r 0.99. calculate the minimum resolving power
A block of wood has a density of 0.50 g/cm3 and a mass of 1.500 kg. What is the volume of oil that the wood displaces
A gas undergoes an isochoric heating during which it gains 5760 Joule of heat, attaining a pressure of 3.91x105 Pa. Calculate the total change in internal energy of the gas
The electric field at the point x = 5.01 centimeter and y = 0 points in the positive x direction with a magnitude of 11.4 N/C. calculate its location and also calculate its charge
A 5.0micrometer strand of DNA carries +e charge per nm of length. Treating it as a charged line, what's the electric field strength 28 nanometer from the DNA, not near either end
A farm water sprinkler is dead headed .the pipe raduis is 4 inches. What is the averge stress when the pressure drop is 38 psi over the entier lenght of the pipe?
A line charge λ per unit length is formed into a semicicle of radius R (centered on the origin) plus a straight segment of length R parallel to the y-axis that is attached to the left end of the semicircle. Find the electric field (magnitude and di..
A surveyor is using a magnetic compass 6.5 m below a power line in which there is a steady current of 100 A. What is the magnetic field in microteslas at the site of the compass due to the power line?
A wall is constructed of a 2 inch layer of fiberglass board (R = 8) and six inches of fiberglass batting (R = 19). If the temperature on the outside surface of the fiberglass board is 50degreesF and the temperature on the inside surface of the fiberg..
an alternating rc circuit is constructed from a 331+/- 3 uF capacitor and a 15+/-.15 ohm resistor connected in series with an alternating voltage source that has a frequency of 100 Hz. Determine phase angle between the supplied EMF and the current..
an initially uncharged electroscope is polarized by bringing a negatively charged rubber rod near the bulb. if the bulb
To test the effects of high acceleration on the human body, NASA has constructed a large centrifuge at the Manned Spacecraft Center in Houston. what must be the speed of the capsule
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