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An artillery shell is launched on a flat, horizontal field at an angle of A = 41.9° with respect to the horizontal and with an initial speed of v0 = 206 m/s. What is the horizontal velocity of the shell after 18.03 s of flight? (Neglect air friction. Use the coordinate system where the x-axis is horizontal and points to the right; and the y-axis is vertical and points up.)
What is the vertical velocity of the shell at this moment?
Your 12 kilogram baby sister is hanging on the bottom of a table cloth with all her weight. Find the acceleration of the turkey
A Na+ ion moves from inside a cell, where the electric potential is -68 mV, to outside the cell, Does its energy increase or decrease
A 25 resistor is connected across a 120 source. The resistor is then lowered into an insulated beaker, containing 1.0 of water at 19, for 90 sec, What is the final temperature of water
A 42.0-cm diameter wheel, consisting of a rim and six spokes, is constructed from a thin rigid plastic material having a linear mass density of 25.0 g/cm. This wheel is released from rest at the top of a hill 53.0 high. 1.
pitchers mounds are raised to compensate for the vertical drop of the ball as it travels a horizontal distance of 17 m
A particle moves along the x axis. Its position is given by the equation 2.00 + 3.00t - 4.00t^2 with x in meters and t in seconds. Find out (1) its position at the instant it changes direction and (2) its velocity when it returns to the position i..
A steam power plant has, at the turbine entrance, saturated vapor with a pressure of 40 bar. The turbine exit is at 50 degrees C. The pump entrance is at 50 degrees C as well, and its exit is saturated liquid at 40 bar. The pump and turbine are is..
Radio waves have frequencies in the range of 1 -100 MHz. What is the range of energy of these photons
A weather emergency siren is mounted on a tower, 165 meters above the ground. How far away from the base of the tower can a person be
A 6000-kg truck is accelerating at 0.5 m/s2 up a slope of 5 degrees. calculate the driving force needed for the truck to accelerate up the incline
A right triangle has sides of 30, 40 and 50 cm. A charge of -10 x 10-6 C is placed at the right angle; a charge of + 10 x 10-6C at the smaller acute angle and a charge of + 5.0x10-6 C at the larger acute angle
Two loudspeakers are located 3.15 m apart on an outdoor stage. A listener is 16.3 m from one and 17.4 m from the other. During the sound chek, a signal generator drives the two speakers in phase with the same amplitude and frequency. The transmitted ..
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