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A 2-kg mass is attached to a spring hanging vertically from the ceiling of an elevator. With the elevator moving up at a constant velocity of 3 m/s, the extension of the spring is 4 cm. What is the spring constant, k, of the spring? (give your answer inN/m
A 5.0-kg projectile is fired over level ground with a velocity of 200.0 m/s at an angle of 30.0 ° above the horizontal
What is the angle of incidence in air of a light ray whose angle of refraction in glass is half the angle of incidence? Assume the refractive index of glass is 1.50
A uniform stick d = 1 m long with a total mass of 249 g is suspended vertically from a frictionless pivot at its top end. A wad of putty of mass 26 g is moving horizontally with speed v. It strikes and sticks to the stick at a distance 0.75 m from th..
What is the little distance between the speakers for which the interference of the sound waves is destructive.
Two ships are moving along a line due east. The trailing vessel has a speed of 16 km/h relative to a land-based observation point, What frequency is monitored by the leading ship
A stone with a mass of 0.700 is attached to one end of a string 0.8 long. The string will break if its tension exceeds 65.0 . The stone is whirled in a horizontal circle on a frictionless tabletop; the other end of the string remains fixed.
find the minimum thickness for constructive interference of visible light with a wavelength of 595 nm.
You want to store 10^-5 C of charge on a capacitor, but you only have a 100 V voltage source with which to charge it. What must be the value of the capacitance
A sphere that is a perfect blackbody radiator has a radius of 0.120 m and is at 200°C in a room where the temperature is 20°C. Calculate the net rate at which the sphere radiates energy
A 0.25-kilogram mass on a vertical spring oscillates at a frequency of 1.0 Hz. If a 0.45-kilogram mass were instead suspended from the same spring, what would be the frequency of oscillation
To push a piece of heavy furniture across the carpet usually takesmore force to get it moving than it takes to keep it moving, this is because:
As soon as a traffic light turns gree, a car speeds up from rest to50.0 mi/h with constant acceleration 9.00 mi/(hr s). In theadjoining bike lane, a cyclist speeds up from rest to 20.0 mi/hwith a constant acceleration 13.0 mi/(hr s).
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