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In a ballistics test, a 22g bullet traveling horizontally at 1300m/s goes through a 29cm-thick 320kg stationary target and emerges with a speed of 860m/s . The target is free to slide on a smooth horizontal surface.
What is the target's speed just after the bullet emerges?
Calculate the size of the average force. plan the force vectors with their tails at the left sphere
In a blade with an airfoil profile the total aerodynamic force acting on the blade when wind speed is 25 ft /sec is 50 lb, find the torque generated in the shaft
A horizontal magnetic field of 2.0×10?4 T is at an angle of 25 to the direction of the current in a straight, horizontal wire 75 cm long. what is the magnitude of the force on the wire
The position of a cart that is oscillating on a spring is given by the equation x= 12.3 cm cos [(1.26 s-1)t] . When t= .805s , what are the (a) velocity and (b) acceleration of the cart ?
A butterfly moves with a speed of v = 12.0 m/s east of North. The y-component of its velocity is 8.00 m/s. The angle between the direction of its motion and the x-axis.
What is the temperature at point B?What is the work done BY the gas in the transition A to B? What is the efficiency of a Carnot cycle running between the lowest and highest temperature of the cycle above
Suppose that the Earth's orbit around the Sun is perfectly circular. Employing conservation arguments, find the value of the eccentricity e of the orbit
A 385-kg cannon, sliding freely on a frictionless horizontal plane at a speed of 7.13 m/s, shoots a 13.5-kg cannonball at an angle of 53.3° above the horizontal. What is the velocity of the ball relative to the cannon
A student on a piano stool rotates freely with an angular speed of 3.05rev/s . The student holds a 1.45kg mass in each outstretched arm, 0.779m from the axis of rotation. Calculate the final kinetic energy of the system
A pitched baseball of mass .200kg, arives at home plate with a speed of 40m/s and is batted straight back to the picture, determine the work done by the bat on the ball
A particle travels counter clockwise around the origin at constant speed in the circular path that has a diameter of 2.50 m, going around twice per second. Point Q is on the path halfway between points P and R that lie on the x axis and the y axis..
find friction force that acts on the bear.
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