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Betelgeuse has a radius 650 times that of the sun and a massfifteen times that of the sun. How fast must a planet at 10 A.U. goin order to orbit the star? How large would Betelgeuse appear fromthe planet (what angle does it subtend in degrees)? What angle doesthe sun subtend as viewed from the earth?
An electromagnetic wave propagates along the +y direction, If the magnetic field at the origin is along the +x direction, what is the direction of the electric field
When the capacitor is charged to 135V , what is the charge per unit length lambda on the capacitor
X-rays with wavelengths of 0.2597 nm are detected at a scattering angle of = 170° in a Compton-scattering experiment. calculate the energy of an incident photon
a book lies on a table. a pushing force f push parallel to the table top and directed to the right is exerted on the
A pendulum sweeps out an angle of 12.5° during its motion. How far does the pendulum bob (the ball at the end of the rope) travel
A positively charged He+ atom has two protons in the nucleus and one electron in the shell. In a classic model of the atom, What is the radius of the orbit
The force on a magnetic moment µz in a nonuniform magnetic field Bz is given by Fz = µz(dBz/dz). If a beam of silver atoms travels a horizontal distance of 1.00 m through such a field and each atom has a speed of 142 m/s, how strong must be the field..
Calculate the angular momentum of an ice skater spinning at 6.00 rev/s given his moment of inertia is 0.490 kg·m2
A large sponge has forces of magnitude 12 N applied in oppositedirections to two opposite faces of area 42 cm^2. What is theshear modulus of the sponge
A 53.0-kg person jumps from rest from the top of a 10.0-m-high tower straight down into the water. Determine the magnitude of the average force that the water exerts on the diver
The positively charged plate of a parallel-plate capacitor has a charge equal to Q. When the space between the plates is evacuated of air, What is the dielectric constant of the material
A gardener feels it is taking him excessively long to water a garden with a 0.952cm diameter hose. By what factor will his time be shortened, if he uses a 1.58 cm diameter hose.
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