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A 1.5m long stick with a mass of 0.3 kg is pivoted on a hinge at one end and held horizontally with a spring by spring constant 10N/m attached at the other end. What is the frequency, f (in Hz), of small up and down oscillations of the stick?
What must the charge (sign and magnitude) of a 1.43 g particle be for it to remain stationary when placed in a downward-directed electric field of magnitude 630.
An alpha particle (a helium nucleus) is traveling along thepositive x-axis at 1175 m/s when it enters a cylindrical tube ofradius 0.400 m centered onthe x-axis. How far does the particle travel before hitting the tube wall
Because gasoline is less dense than water, drums containing gasoline will float in water. Find what total volume of steel can be used in making the drum if the gasoline-filled drum is to float in freshwater
Two slits spaced 0.445 mm apart are placed 55.0 cm from a screen. What is the distance among the second and third dark lines of the interference pattern on the screen when the slits are illuminated with coherent light by a wavelength of 540 nm?
A heavy piece of hanging sculpture is suspended by a90-cm-long, 5.0 g steel wire. When the wind blows hard, the wire hums at its fundamental frequency of 80Hz. What is the mass of the sculpture?
An iron casting containing a number of cavities weighs 23137.8 N in air and 19020.3 N in water. What is the total volume of all the cavities in the casting
the microwave radiation left over from the big bang explosion of the universe has an average energy density of 3.95
an electron with an initial speed of 790000 ms is brought to rest by an electric field. b what was the potential
If you had an experimental set-up, where a wire with a linear mass density of 1 g/m was clamped at one end, at what frequency would you need to vibrate the wire
Hans and Franz pick up the 2.0m long garden. The chair weights 200 N and the center of gravity is 80 cm from Hans end. How much weight does Hans have to lift
A pendulum is 1.20 metres long. What is the speed of the bob when it passes by its equalibrium position if it is pulled aside until it makes an angle of 25 degrees to vertical.
A railroad car of mass 2.4 104 kg moving at 4.00 m/s collides and couples with two coupled railroad cars, How much kinetic energy is lost in the collision
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