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Three guns are aimed at the center of a circle, and each fires a bullet simultaneously. The directions in which they fire are 120° apart. Two of the bullets have the same mass of 3.86 x 10-3 kg and the same speed of 330 m/s. The other bullet has an unknown mass and a speed of 601 m/s. The bullets collide at the center and mash into a stationary lump. What is the unknown mass?
A displacement, s, of an object as a function of time, t, is given by , Find an expression for the acceleration of the object
A particle moves along the x-axis according to the equation x(t) = 2.0 + 3.0t2 - 1.0t3, where x is in meters and t is in seconds. What is the position of this particle when it achieves its maximum speed in the positive x-direction? What is its spe..
A uniform rod is attached to a wall by a hinge at its base. Determine the horizontal and vertical components of the force exerted on the rod by the hinge
Find the speed of a satellite moving around the earth in a circular orbit that has a radius equal to three times the earth's radius of 6.38 106 m
on a spacecraft two engines fire for a time of 541 s. one gives the craft an acceleration in the x direction of ax
Neglecting air resistance, how fast is it going when it hits the balloon? Illustrate what is the acceleration of the cannonball just before it hits the balloon?
Two charges, +4.0x 10-8C and -2.0 x 10-8C are separated by 12 cm. Calculate the net force on the third charge
The first puck is deflected 38 below the +x axis and moves off at 0.37 m/s. Find out the speed and direction of the second puck after the collision.
question when 1.5 kg of a cold metal at a temperature of 258 k is immersed in 2.5 kg of water at a temperature of 343 k
Police investigators, examining the scene of an accident involving two cars, measure 72-m-long skid marks of one of the cars, Estimate the initial speed of that car assuming a level road
a 1.53-cm-high object is placed 20.0 cm in front of a concave mirror with a 4.26-cm focal length. what is the position
A glass is half-full of water, with a layer of vegetable oil (n = 1.47) floating on top. Determine the critical angle for the oil-water interface
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