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A model rocket is constructed with a motor that can provide a total impulse of 39.0 N·s. The mass of the rocket is 0.229 kg. What is the speed that this rocket achieves when it is launched from rest? Neglect the effects of gravity and air resistance.
Arranged on the floor are five concrete blocks, each 28.4kg and 0.265m tall. What is the minimum work required to stack all five vertically
The position of a particle is given by the expression x = 4.00 cos (2.00?t + ?/4), where x is in meters and t is in seconds. Determine the position of the particle at t = 0.350 s
A 78 kg person is standing on the edge of a rotating merry-go-round platform with a 3.0-m radius, 205kg mass and a 1.45 rad/s angular velocity. How far from the center does he make it
A pitcher throws a curveball that reaches the catcher in 0.64 s. The ball curves because it is spinning at an average angular velocity of 290 rev/min (assumed constant) on its way to the catcher's mitt
A sky diver of mass 81.0 kg jumps from a slow-moving aircraft and reaches a terminal speed of 51.5 m/s. What is the acceleration of the sky diver when her speed is 30.0 m/s
An electron enters a parallel plate capacitor with a speed of 5.45e+06 m/s. An electric field in the capacitor has deflected the electron downward by a distance of 0.618cm after traveling a horizontal distance of 2.25cm. Find the magnitude of the ele..
A 2.00 kg mass is connected to a spring with a spring constant of 6.00 N/m. What is the maximum velocity the simple harmonic motion
A model airplane with mass 0.740 kg is tethered to the ground by a wire so that it flies in a horizontal circle 30.2 m in radius. Find the magnitude of the angular acceleration of the airplane
Unpolarized light with intensity 370 W/ m^2 passes first through a polarizing filter with its axis vertical, What light intensity emerges from the second filter
A motorcycle starts with a constant acceleration of 3.0 m/s^2. At just that instant a buick with a constant speed of 20 m/s passes the motorcycle, How fast is the motorcycle travelling when it overtakes the buick
Light from a helium-neon laser (? = 633 nm) passes through a circular aperture, What is the diameter (in mm) of the hole
A ball rolls off a platform that is 6.8 meters above the ground. The ball's horizontal velocity as it leaves the platform is 7.4 m/s.How much time does it take for the ball to hit the ground
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