Saturday
May 18, 2013

Posts by tae


Total # Posts: 30

physics
A particle moves through an xyz coordinate system while a force acts on it. When the particle has the position vector vector r = (2.00 m)ihat - (3.00 m)jhat + (2.00 m)khat, the force is vector F = Fxihat + (7.00 N)jhat - (5.30 N)khat and the corresponding torque about the orig...

physics
For the vectors in the figure below, with a = 8, b = 7, and c = 113, calculate the following dot products.

physics
For the following three vectors, what is 3C·(2A multiplied by Bvec)? A = 2.00ihat + 3.00jhat - 6.00khat Bvec = -3.00ihat + 3.00jhat + 2.00khat C = 9.00ihat - 8.00jhat

physics
If d1 = 7 ihat - 2 jhat + 4 khat and d2 = -5 ihat + 2 jhat - khat, then what is (d1 + d2)·(d1 multiplied by 6 d2)?

physics
A particle moves through an xyz coordinate system while a force acts on it. When the particle has the position vector vector r = (2.00 m)ihat - (3.00 m)jhat + (2.00 m)khat, the force is vector F = Fxihat + (7.00 N)jhat - (5.30 N)khat and the corresponding torque about the orig...

physics
At the instant the displacement of a 2.00 kg object relative to the origin is d = (2.00 m) ihat + (4.00 m) jhat - (3.00 m) khat, its velocity is v = - (6.20 m/s) ihat + (2.70 m/s) jhat + (2.60 m/s) khat, and it is subject to a force F = (6.00 N) ihat - (7.70 N) jhat + (4.10 N)...

physics
A satellite is placed between the Earth and the Moon, along a straight line that connects their centers of mass. The satellite has an orbital period around the Earth that is the same as that of the Moon, 27.3 days. How far away from the Earth should this satellite be placed?

physics
The distances from the Sun at perihelion and aphelion for Pluto are 4.410 109 km and 7.360 109 km, respectively. What is the ratio of Pluto's orbital speed around the Sun at perihelion to that at aphelion?

physics
A spy satellite was launched into a circular orbit with a height of 599 km above the surface of the Earth. Determine its orbital speed and period. (The mass of the Earth is 5.97 1024 kg, and the radius of the Earth is 6370 km.)

physics
A satellite is in circular orbit around the Earth at a distance of 4.74RE with a speed of 3.63 km/s. With what speed would the satellite hit the Earth's surface if somehow it suddenly stopped and fell to Earth? Ignore air resistance.

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