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In a Fourth of July celebration, a firecracker is launched from ground level with an initial velocity of 28.6 at 39.1 from the vertical. At its maximum height it explodes in a starburst into many fragments, two of which travel forward initially at 30.0 at 59.9 with respect to the horizontal, both quantities measured relative to the original firecracker just before it exploded.With what angles with respect to the horizontal do the two fragments initially move right after the explosion, as measured by a spectator standing on the ground?
cylindrical conductor with radius r and length l carries a uniformly distributed net charge q. this conductor is
Blood flows in an aorta of radius 8.0 mm at 31 cm/s. Calculate the volume flow rate in liters per minute
two blocks are connected over a pulley. The mass of block A is 7.9 kg and the coefficient of kinetic friction between A and the incline is 0.24. What is the mass of block B
If a car of mass 1000 kg is moving along a highway at 92 km/h, what is car's kinetic energy as determined by someone standing alongside the highway.
A 115-V source of emf is attached to a heating element with is a coil of nichrome wire (r=100*10^-8) of cross section 1.20 mm^2. What must be the length of the wire
A 156 kg coil of sheet steel is 0.80 mm thick and 50 cm wide. How long is the steel in the coil
A rocket has a mass of 1.2kg and is acted upon by an impulse from the engine of 130.5 N s during the 2 seconds the engine is firing. Determine the average net force acting on the rocket while the engine fired?
A curve in a road forms part of a horizontal circle. As a car goes around it at constant speed 14.0 m/s, What is the total horizontal force on the driver
a bird migrating toward its summer nesting site travels 3200 miles in a direction 18deg east of north. how much farther
The centripetal acceleration in a horizontal centrifuge is 75 g's when it is rotating at 2000 rpm, What is the radius of the centrifuge
What is the frequency of ultrasound in a medium if he wave length is 3.0 x 10^-3 m and velocity is 1300 mm/ms.
The motor of a four wheeler traveling along a muddy trail generates an average power of 7.20 104 W when moving at a constant speed of 11 m/s. What is the tension in the tow rope pulling the log
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