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A box of wood has a vertical projection of 6 inches when placed in water and 4 inches when placed in alcohol. if the specific gravity of alcohol is.0.82, find the specific gravity of the wood
A 10.0 cm -long solenoid of diameter 0.400 cm is wound uniformly with 800 turns. A second coil with 50.0 turns is wound around the solenoid at its center. What is the mutual inductance of the combination of the two coils?
A bullet is fired through a board 13.5 cm thick, with a line of motion perpendicular to the face of the board. If the bullet enters with a speed of 387 m/s and emerges with a speed of 163 m/s, what is its acceleration as it passes through the boar..
The core of a star collapses during a supernova, forming a neutron star. find the neutron star's angular velocity in revolutions per second, given the core's was originally 1.0 revolution per 30 days
Rope BCA passes through a pulley at point C and supports a crate at point A. Rope segment CD supports the pulley, What is the angle required for equilibrium?
For alpha particles of energy 7.68 MeV scattered from a platinum foil two microns thick, find the collision diameter
A 0.7 kg block of ice is sliding by you on a very slippery floor at 3.5m/s. As it goes by, you give it a kick perpendicular to its path. Your foot is in contact with ice block for 0.003 seconds.
A small fly of mass 0.20 g is caught in a spider's web. The web vibrates predominately with a frequency of 6.0 Hz. (a) What is the value of the effective spring stiffness constant k for the web? N/m (b) At what frequency would you expect the web to v..
You switch from a 1.40NA 60x oil immersion objective to a 0.5NA 20x air immersion objective. What is the acceptance angle (in degrees) for the oil immersion objective
Suppose you loft a ball in a tennis game with an initial speed of 16.5 m/s at an angle of 52.0 degrees above the horizontal. With what minimum average speed must he move
Find the current in a 9.00 ? resistor connected to a battery that has an internal resistance of 0.30, What is the emf of the battery
Like a charged rubber balloon with an even surface charge density, a charged soap bubble experiences an outward electrical force on every bit of its surface. Given the total charge Q on a bubble of radius R
A 4.5kg squid takes in 1.75kg of water while at rest, and then expels the water at a speed of 3.5m/s, calculate the work done by the squid's muscles during this process
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