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Assuming that a spacecraft lands on an asteroid and bores a hole perpendicular to its surface; it is noticed that the sun shines straight down to the bottom of the hole. Another hole is bored 10 miles "north' of the first hole at the same time, but it is noticed that the Sun makes a 20 degree angle to rod placed into that hole - what is the circumference and radius of that asteriod?
A luge and its rider, with a total mass of 104 kg, emerges from a downhill track onto a horizontal straight track with the initial speed of 53 m/s. suppose they stop with the constant deceleration of 2.30 m/s2.
As a function of time, the velocity of the football can be written as . (If the acceleration of an object is constant, find the average acceleration vector of the football
A 1.00 kg beaker containing 2.0 kg of oil (density=916-kg/m3) rests on a platform scale. A 2.00 kg block of iron is suspended from a spring scale and is completely submerged in the oil.
A trumpet player standing at rest plays a note of frequency 1200 hertz. Determine the speed of the automobile
Coherent light from a sodium-vapor lamp is passed through a filter that blocks everything except for light of single wavelength. It then falls on two slits separated by 0.410 . In resulting interference pattern on a screen 2.10 away, adjacent bri..
A concrete highway is built of slabs 8.0 m long (20°C). How wide should expansion cracks between the slabs be (at 20°C) to prevent buckling if the range of temperature is -35°C to +45°C.
makes an angle of 45 degrees with the horizontal by an external force. The object moves up the incline a distane 3m. What is an increase in the gravitational energy of the object
A skier is gliding along at 2.8m/s on horizontal, frictionless snow. He suddenly starts down a 10?incline. what is the distance of the incline
Using a block of transparent, unknown material, What is the index of refraction of this material
What is the least time necessary for crossing
One of Einstein's postulates says that nothing travels faster than the speed of light in a vacuum, c, what limit does this place on the numerical value for n
Two dogs pull horizontally on ropes attached to a post; the angle between the ropes is 50.0 degrees. find the angle the resultant force makes with the rope of dog A
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