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Assume that eight identical uncharged particles of mass m and spin 1/2 are contained in a one-dimensional box of length L. What is the ground-state energy of this system? Express your answer using m, L, and h, to represent m, L, and Planck's constant, respectively.
The scale of a spring balance reading from zero to 180 N is7.00 cm long. A fish suspended from thebalance is observed to oscillate vertically at 2.50 Hz. What is the mass of the fish? Neglect themass of the spring.
An average froghopper insect has a mass of 12.3 mg and reaches a maximum height of 290 mm when its takeoff angle is 58 degrees above the horizontal. Find the takeoff speed of the froghoppper
In a typical Hollywood movie stunt, a person jumps off a building and lands on a cushion to safely stop. How much voltage should the battery have to stop the object as it reaches the ground
An archeologist on a dig finds a fragment of anancient basket woven from grass. What is the age of the basket
Find out the tension in the rope
a concave mirror f 44.0 cm produces an image whose distance from the mirror is exactly 14 the object distance.
An LR Circuit consist of an inductor with L = 2.50*10^-4 H and a resistor with R = 1.10 ohm connected in series to an oscililating source of emf. What is the phase angle of the current
A student moves a 35.0 kg box up a ramp inclined at 12 degrees with the horizontal. What is the acceleration up the ramp
A round wooden log with a diameter of 85 cm floats with 18%of its radius out of the water. What is the log's density
A small insect viewed through a convex lens is 1.5 cm from the lens and appears three times its actual size. What is the focal length of the lens?
A 40 kg crate is pulled across a rough horizontal surface with a force of 350 N at an angle of 25o above the horizontal. What is the horizontal acceleration, in m/s2, of the crate
a particle is thrown upwards from the ground. it experiences constant air resistance which produces a retardation of 2
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