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A projectile is shot from the ground at an angle of 55 degrees with respect to the horizontal, and it lands on the ground 5 seconds later. Find:
(a) (10 pts) the horizontal component and the vertical component of initial velocity;
(b) (10 pts) the magnitude and the direction of velocity when the projectile hits the ground.
Cold fusion theory.
Calculate velocity of the skydiver of mass m=80kg as a function of time. The air drag coefficient D=100g/m=0.1kg/m.
The electric field at point P just outside the outer surface of a hollow spherical conductor of inner radius 15 cm and outer radius 31 cm has magnitude 465 N/C and is directed outward.
Originally, light is unpolarized. It then travels through 3 polarizers: the first with its transmission axis aligned vertical, What is the intensity of light after the third polarizer
A solid disk rotates in the horizontal plane at an angular velocity of 0.049 rad/s with respect to an axis perpendicular to the disk at its center. what is the angular velocity of the disk
A cement block accidentally falls from rest from the ledge of a 74.8-m-high building. When the block is 18.4 m above the ground, a man, 2.10 m tall, looks up and notices that the block is directly above him. How much time, at most, does the man have ..
A 2.0 cm tall object is placed 5.0 cm in front of a +12 diopter lens. What is the linear magnification
Suppose a 1.83-g nugget of pure gold has zero net charge. What would be its net charge after it has 1.92 % of its electrons removed?
A lighted candle is placed 36 cm in front of a converging lens of focal length f1= 13 cm, calculate the position and relative size of the final image
Two gravitational forces act on a particle, in perpendicular directions. To find the net force, can we add the magnitudes of those two forces?
Concept Simulation 11.1 reviews the concept that plays the central role in this problem. Find the average blood speed as a constriction in the artery if the constriction reduces the radius by a factor of 4
A heat engine does 376.88 J of work per cycle while exhausting 648.92 J of heat to the cold reservior. what is the cold reservior temperature in degrees Celsius
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