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Question: What is the kinetic energy of a ball of mass 16.1 kg at the apex (highest point) of its trajectory, if it is thrown with an initial speed of 45 mph and an initial angle of 42.8o with respect to the horizontal?
Please show how you obtained the kinetic energy of a ball.
If the principal quantum number n were limited to the range from 1 to 5, how many elements would we find in nature
A two-slit experiment with slits separated by 4.3 10-4 m produces a second-order maximum at an angle of 0.0650° , Find the wavelength of the light used in this experiment
A railroad car of mass M= 2000kg and speed(initial velocity) Vo= 8.50 m/s collides and couples to another car of equal mass and initially at rest, What is the final speed of the two coupled railroad cars
Gold, which has a mass of 19.32 g for each cubic centimeter of volume, is the most ductile metal and can be pressed into a thin leaf or drawn out into a long fiber. what is the area of the leaf in square meters
a photon absorbed by an electron will give up more energy to the electron if the photona is moving slower.b has a
A capacitor is a device used in a variety of electronic circuits. In a simple design a capacitor consists of two parallel metal plates of area A separated by a distance d. When the plates are connected to the positive and negative terminals of a b..
A container of cross-sectional area 107 cm2 contains liquid of density 2.35 g/cm3 to a height of 6.90 cm above a small hole of area 1.00 cm2 in the side. Find the flow rate through the hole
A tuning fork labelled 392 Hz has the tip of each of its two prongs vibrating by amplitude of 0.600mm. What is the maximum speed of the tip of a prong?
An 80.0 kg person carries a 25 N package up aflight of stairs. The vertical height of the stairs is 10.0 m. How much total work did the person do on herself and the package
a 0.50 kg mass is attached to a spring of spring constant 20 nm along a horizontal frictionless surface. the object
Two converging lenses, each of focal length 14.5 cm, are placed 39.1 cm apart, and an object is placed 29.2 cm in front of the first. What is the magnifcation of the system
an automobile engine slows down from 4500 rpm to 1200 rpm in 2.5 s. calculatea its angular acceleration assumed
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