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A polar bear of mass 327 kg stands on an ice floe 129 cm thick. What is the minimum area of the floe that will just support thebear in saltwater of density of 1030 kg/m3? The specificgravity of ice is 0.98.
What is the minimum speed the electron could have after the collision? The allowed energies of a simple atom are 0.0 eV, 5.5eV and 9.0eV
An old oaken bucket of mass 6.75 kg hangs in a well at the end of a rope. The rope passes over a frictionless pulley at the top of the well, How much work does gravity do on the bucket
A large cylindrical water tank is mounted on a platform with its central axis vertical. The water level is 3.75 m above the base of the tank, and base is 6.50 m above the ground. A small hole 2.23 mm in diameter has formed in the base of the tank. Bo..
a 6.0 mc charge is placed at the origin and a second charge is placed on the x-axis at x 0.30 m. if the resulting
A person with a remote montain cabin plansto install her own hydroelectric plant. A nearby stream is 3.00mwide and 0.500m deep. Find the power she can generate
A family ice show is held in an enclosed arena. The skaters perform to music playing at a level of 87.5 dB. What is the combined sound level
A transformer is to be used to provide power for a computerdisk drive that needs 6.0 V (rms) instead of the 120 V (rms) fromthe wall outlet. Find the current in the secondary
Nate the Skate was an avid physics student whose main non-physics interest in life was high-speed skateboarding. In particular, Nate would often don a protective suit of Bounce-Tex, which he invented, and after working up a high speed on his skate..
You swing a 3.25-kg bucket of water in a vertical circle of radius 0.960m. Find the tension in the rope tied to the bucket at the top of the circle
The inductance of a closely wound coil is such that an emf of3.0 mV is induced when the current changes at the rate of4.6 A/s. How many turns does the coil have
A 400kg soccer ball approaches a player horizontally with aspeed of 15.0 m/s. What impulse was delivered to the ball by the player
A thick, conducting, spherical shell of inner radiusa = 0.7 cm and outer radius b = 1.3 cm is uncharged. The shell surrounds a point charge +Q = 3.10×10-3 C at itscenter (see the figure). What is the surface charge residing on the inner surface oft..
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