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A rifle with a barrel length of 59 cm fires a 8 g bullet with a horizontal speed of 350 m/s. The bullet strikes a block of wood and penetrates to a depth of 15 cm. What resistive force (assumed to be constant) does the wood exert on the bullet?
A bullet with a mass of 4.95 g and a speed of 940 m/s penetrates a tree horizontally to a depth of 6.15 cm. Calculate the magnitude of this frictional force
A bar AB of negligible mass and length 2 m balanced at its midpoint a 4 kg and 5 kg masses are suspended from both ends. A 4 kg mass is 0.4m away from the midpoint. At what point the mass of 5 kg is suspended to a bar keep the balance.
A space craft is designed to be rotating column, in order to simulate artifical gravity. find angular frequency must be maintained to simulate surface gravity
what is the maximum speed the ball can have. imagine there are no other forces acting on the particle.
A .300kg mass attached to the end of a .75m string is whirled around on a smooth level table. If the maximum tension that the string can withstand is 250N, then what most tangential speed can the mass have if the string is not to break.
he string will break if its tension exceeds 60.0 N . The stone is whirled in a horizontal circle on a frictionless tabletop; the other end of the string remains fixed. Determine the maximum speed the stone can attain without breaking the string.
An electron and a proton are each placed at rest in a uniform electric field of magnitude 546 N/C. Compute the speed of each particle 52 ns after being free.
The electric field everywhere on the surface of a thin, spherical shell of radius 0.785 m is of magnitude 850 N/C and points radially toward the center of the sphere. (a) What is the net charge within the sphere's surface? Please show work.
A projectile is fired at an upward angle of 45° from the top of a 308m cliff with a speed of 198 m/s. What will be its speed while it strikes the ground below? (Use conservation of energy.)
A plane touches down for a landing with a ground speed of 120 mi/h (53.7 m/s). The runway is 1000 m in length and the plane stops at the end of the runway after slowing down with constant acceleration. What is the plane's acceleration while stoppi..
A rope is used to pull a 2.25 kg block at constant speed 7.47 m along a horizontal floor. The force on the block from the rope is 7.52 N, find the work done by the rope's force
When driving west toward the Rocky Mountains, you see a peak 2.8 degrees above the horizon. Your GPS gives your current elevation as 1500 m , and according to the map, you're 22.5 km (horizontally) from the peak. Find the peaks elevation.
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