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A geode is a hallow rock with a solid shell and an air filled interior. Assume a particular geode weighs twice as much in air as it does when completely submerged in water. If the density of the solid part of the geode is 2500kg/m^3, compute what fraction of the geode volume is hallow.
How much work must be done to accelerate a baton from rest to an angular speed of 7.4 rad/s about its center? Consider the baton to be a uniform rod of lenght 0.53m and mass 0.44kg.
A girl is jumping on a trampoline and reaches a maximum height of 3.1 meters, h=3.1m. She has a mass of m = 53kg. what is the spring constant k in N/m of the trampoline
Let's say you measure t1/2 to be 0.0299 seconds and the resistance in the circuit is 108 Ohms. Then what is the capacitance in micro Farads
A wall in a house contains a single window. The window consists of a single pane of glass whose area is 0.10 m2 and whose thickness is 7 mm. what is the percentage lost by the window
A 5.1kg mass hanging from a spring scale is slowly lowered onto a vertical spring, as shown in the figure(Figure 1) . a.) What does the spring scale read just before the mass touches the lower spring? b.) The scale reads 25 when the lower spring has ..
A 42.5 mA current is carried by a uniformly wound air-core solenoid with 425 turns, a 19.5 mm diameter, and 13.0 cm length. Compute the inductance of the solenoid
Two circuits contain an emf produced by a moving metal rod, likethat shown in the drawing. The speed of the rod is the same in eachcircuit, but the bulb in circuit 1 has one-half the resistance of the bulb in circuit 2.
A newly planted tree is supported against the wind by a rope tied to a stake in the ground, as shown in the figure below. The forceof the wind, though distributed over the tree, is equivalent to asingle force F, as shown in the figure. Find theten..
IN A VEEERTICAL JUMP AND REACH TEST A 60 KKG SSSTUDENT JUMPS 60CM, WHILE A 90 KG STUDENT JUMPS 45 CM. WHICH JUMPEER WAS MORE POWEERFUL
The diameter of the Moon's (nearly circular) orbit about the Earth is 3.6x10^5 km an dit takes 27 days for one orbit. What is (a) the Moon's tangential speed, (b) its kinetic energy, (c) the system potential energy and system total energy?
charges q q and -q are placed on the x-axis of x0 x2m and x4m respectively. at which of the following points does the
A ball is dropped from height of 20 m above the surface of water in a lake. The refractive index of water is 4 / 3. A fish inside the lake, in the line of fall of the ball, is looking at the ball. At an instant, when the ball is 12.8 m above the wate..
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