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Q. A mortar fires a shell of mass at speed. The shell explodes at the top of its trajectory (shown by a star in the figure) as designed. However, rather than creating a shower of colored flares, it breaks into just two pieces, a smaller piece of mass and a larger piece of mass. Both pieces land at exactly the similar time. The smaller piece lands perilously close to the mortar (at a distance of zero from the mortar). The larger piece lands a distance from the mortar. If there had been no explosion, the shell would have landed a distance from the mortar. Suppose that air resistance and the mass of the shell's explosive charge are negligible. Determine the distance from the mortar at which the larger piece of the shell lands.
Express d in terms of r.
calculate the average acceleration in m/s^2 (meter per second square), using a coordinate system with the X axis in the direction of the car's original motion and the Y axis toward the side of the road to which the car skids.
A plastic rod is rubbed against a wool shirt there by aquiring the charge of -0.80 mC. how many electrons are transfered from the wool shirt to the plastic rod.
A 15m uniform ladder weighing 500 N rests against a frictionless wall. The ladder makes 60 angles with the horizontal.
A swimming pool has dimensions 32 m 9 m and a flat bottom. The pool is filled to a depth of 1.50m with fresh water. What is the force exerted by water on the bottom.
Assume the freezer operates for 5 hours each day, how much power does it require while operating
What should the charge (sign and magnitude) of a particle of mass 1.47 be for it to remain stationary when placed in a downward-directed electric field of magnitude 610.
find the maximum distance she can be from the craft and still return within 2.30 min (the amount of time the air in her helmet remains breathable).
A radio station broadcasts at a frequency of 600,000 Hz. Know that radio waves have a speed of 3.00 x 10^8m/s, what is wavelength of these waves.
A 1kg ball released from horizontal attatched to a 2.5 m string collides ellastically with a 2 kg block at rest. what is the speed of the block after the collision.
Two objects are maintained at constant temperatures, one hot and one cold. Two identical bars can be attached end to end, as in part a of drawing, or one on top of the other, as in part b. When either of these arrangements is placed between the hot a..
The wind blows with a force of 425N north on a sail boat, while the water exerts a force of 325N west on the sailboat. Find out the magnitude and direction of the net external force on the sailboat.
An elevator releases 11200J of gravitational potential energy as descending 4m between floors. How much does elevator weigh.
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