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Suppose a meter stick( with a center of mass 48.0 cm) is pivoted at the 40.0 position. To achieve balance, an 80.0g mass must be placed at the 20.0 position. What is the mass of the meter stick?
The average density of the planet Neptune is 1644 kg/m3. The acceleration of gravity on its surface is 11.32 m/s2. Calculate the average radius of Neptune
a rubber ball is shot straight up from the ground with speed v0. simultaneously a second rubber ball at height h
The work function of zinc is 3.6 eV. What is the maximum energy of the photoelectrons ejected by UV light of wavelength 3000 angstroms?
One end of a cord is fixed and a small 0.500-kg object is attached to the other end, where it swings in a section of a vertical circle of radius 2.00 m. When Θ = 20.0 degrees, the speed of the object is 8.00 m/s. At this instant, discover the tension..
Two masses undergo a front-to-back collision. The mass m has aninitial velocity 2v0, and the mass 2m has an initial velocity v0.After the collision, they stick together, forming a compound system. What is the final kinetic energy of the compound ..
1 salt crystals will form saltwater as the water evaporates. a salt crystals is much more ordered than salt dissolved
a point charge q10-9 coulombs is placed at the centre of a dielectric sphere of radius r10cm. the relative permittivity
What is the centripetal acceleration of an object on the Earth's equator owing to the rotation of the Earth? What would the period of rotation (in hours = h) of the Earth have to be for objects on the equator to have a centripetal acceleration equ..
chameleons catch insects with their tongues which they can rapidly extend to great lengths. in a typical strike the
a find the change in classiclal momentumof an electron that accelerates from 0.900c to 0.940c neglecting relativistic
A spring with spring constant 36N/m is attached to the ceiling, and a 5.1-cm-diameter, 1.3kg metal cylinder is attached to its lower end. what length of the cylinder is submerged
If a chain of 35 identical short springs linked end-to-end has a stiffness of 400 N/m, what is the stiffness of one short spring
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