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A cannon fires a cannon ball eastwards at a speed of 20 m/s (this speed is along the barrel of the cannon) and an angle of 45o above the horizontal. At the same time and from the exact same starting position a motorized cart begins to travel horizontally eastwards along the level ground. The cart, starting from rest, undergoes constant acceleration while the cannon ball rises and then moves with zero acceleration as the cannon ball falls back to the ground. Gravity act along the vertical at exactly -10 m/s2.
If the cart is to be at the same position as the cannon ball when the cannon lands, then what is the acceleration of the cart?
The center-tap to high peak voltage to each side is 22.0 V. Two silicon diodes are used to make a full-wave rectifier. Calculate the output DC voltage and the ripple voltage
A resting person requires 14.5-L of per hour to maintain metabolic activities. Such a person breathes in 0.510L of air at approximately 32.0 degrees celsius with each breath. The inhaled air is 20.9 percent while the exhaled air is 16.3percent.
a bat flies toward a wall emitting a steady sound with a frequency of 20.0 khz. this bat hears its own sound plus the
Two soccer players start from rest, 30 m apart. They run directly toward each other, both players accelerating. How much time passes before the players collide
A ball of circumference 72.7 cm and mass 605 g is forced to the bottom of a swimming pool and then released. After initially accelerating upward, it rises at a constant velocity. (The density of water is 103 kg/m3.)
A uniform solid disk with a mass of 45.00 kg and a radius of 0.393 m is free to rotate about a frictionless axle. Forces of 90.0 and 125 N are applied to the disk.
Consider a long insulating cylinder of radius R and charge density C. Obtain the magnitude of the electric field at a distance r less than R from the axis of rotation of the cylinder
a uniform electric field of magnitude 430 nc pointing in the positive x-direction acts on an electron which is
The four masses shown in the figure are connected by massless, rigid rods, Find the coordinates of the center of gravity
The current in a wire is 1.00 A. How much time is needed for 1 mole of electrons to pass a point in the wire
A 350kg sailboat has an acceleration of .62m/s^2 at an angle of 64 degrees north of east. Find the magnitude and direction of the net force that acts on the sailboat
A 28.9-g bullet is fired from a rifle. It takes 3.86 × 10-3 s for the bullet to travel the length of the barrel, find the average net force exerted on the bullet
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