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John is on top of the building and jack is down. If john throws a ball at an angle of 60o and with initial velocity 20 m/s. At what height will the ball reach after 2 s?
A spring loaded ballistic pendulum gun requires an increasing force to load, Calculate the work required to load the gun
A 10 kg block has a speed of 9 m/s as it begins to slide up a ramp inclined 20o above the horizontal. What is the velocity of the blocks after the collision
A frictionless spring of spring constant 500 N/m has one end attached to a verticalwall and the other end to a block of mass 2.0 kg, Find the amplitude and frequency of oscillation
A 150-? resistor is connected in series with a 0.250-H inductor. The voltage across the resistor is vR=(3.80V)cos[(720rad/s)t]. Derive an expression for the circuit current
A spaceship travels at a constant speed from earth to a planet orbiting another star. When the spacecraft arrives, thirteen years have elapsed on earth, and 6.5 years have elapsed on board the ship. How far away (in meters) is the planet, according t..
a briefly describe the davidson-germer experiment. how does it support the de broglies hypothesis?b what is bragg
A Carnot engine uses a hot reservoir consisting of a large amount of boiling water and a cold reservoir consisting of a large tub of ice and water. how many kilograms of ice in the tub
A solid object is made of two materials, one material having density of 2 000 kg/m3 and the other having density of 6 000 kg/m3. what is its average density
You and a friend have been given the task of designing a display for the Physics building that will demonstrate the strength of the electric force, calculate the necessary amount of charge on the marble for a reasonable ramp angle of 15 degrees
A lens appears greenish yellow (λ = 570 nm is strongest) when white light reflects from it. What minimum thickness of coating (n = 1.33) do you consider is used on such a glass (n =1.52) lens? Why?
Traffic is moving along the highway at 52 km/h on a rainy day. Illustrate what is the minimum coefficient of friction between tires and road that will allow cars to negotiate the turn without sliding off the road?
What is the intensity of the sound waves at point.
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