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In November 2003, the now-most-distant-known object in the solar system was discovered by observation with a telescope on Mt. Palomar. This object, known as Sedna, is approximately 1700 km in diameter, takes about 1.05×10^4 years to orbit our sun, and reaches a maximum speed of 4.64 km/s. Calculations of its complete path, based upon several measurements of its position, indicate that its orbit is highly elliptical, varying from 76.0 AU to 942 AU in its distance from the sun, where AU is the "astronomical unit," which is the average distance of the earth from the sun 1.50×108km. What is Sedna's minimum speed? What is the ratio of Sedna's maximum kinetic energy to its minimum kinetic energy?
A closed steel object is known to have a hollow cavity withint it. It weights 4800 N in air and 3200 N when wieghed under water. What is the outside volume of the object
The magnitude of the field produced by a point charge of +5.4 micro-coulombs has a magnitude of 5.9 x 106 N/C, How far is the point from the charge
Assume the car is moving at 72 km/hr when the brake pedal is applied. Assume that the radius of the wheel is 15 cm. What is the maximum power.
The rms value of the electric field in an electromagnetic wave is Erms = 480 V/m. Find the average energy density
A vertical straight wire carrying and upward 24-A current exerts an attractive force per unit length of 8.8 X 10-4 N/m on a secon parallel wire 7.0 cm away
Although the cross-sectional area of a capillary is much smaller than that of the aorta, there are many capillaries, so their total cross-sectional area is much larger. calculate the total cross-sectional area of the capillaries
Maximum mass of exactly 1 metric ton?
A square coil of wire of side 3.00 cm is placed in a uniform magnetic field of magnitude 2.50 T directed into the page, find the average current induced in the coil during this rotation
If there is a section of the hose where the diameter decreases to 1.93 cm, what is the speed of the water in this section
When the afternoon Sun reaches an angle of 27.0° above the horizon, sunlight ceases to illuminate the bottom of the tank. Evaluate how deep is the tank?
A man of mass 91 kg drops to a concrete patio from a window 0.63 m above the patio. What is the magnitude of the average stopping force exerted on him by the patio
An electric motor rotating a workshop grinding wheel at the rate of 106 rev/min is switched off. Assume the wheel has a stable negative angular acceleration of magnitude 1.50 rad/s2.
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