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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 shell is fired from a gun with a muzzle velocity of 25 m/s, at an angle of 60° with the horizontal. How far from the gun does the other fragment land
A certain protein molecule is hydrolyzed by an enzyme. How would you define this statement in your own words to someone who is not familiar with chemical terminology.
The highest-energy cosmic ray ever detected had an energy of about 3.0x10^20 eV. Assume that this cosmic ray was a proton. What was the proton's speed as a fraction of c
Five equal-mass particles (A-E) enter a region of uniform magnetic field directed into page. They follow the trajectories. Rank the particles on the basis of their speed.
A standing wave is set up by reflecting radio waves from a large, flat metal dish. What is the frequency of the radio waves
A compressed-air cylinder is known to fail if the pressue exceeds 100 atm. A cylinder that was filled to 20 atm at 22°C is stored in a warehouse. Unfortunately, the warehouse catches fire and the temperature reaches 900°C. What is the pressure ins..
A sphere of styrofoam with a density of 152 kg/m3 has a 45 cm diameter. what is the maximum iron mass that can be suspended by a string from it so that it does not sink
A car travels up a hill at a constant speed of 37 km/h and returns down the hill at a constant speed of 66 km/h. Calculate the average speed for the whole trip.
Two people are pushing inward on a door from the outside. One person is pushing the door shut from the inside. how much force is the hinge exerting on the door
express what would be the frequency of vibrations.
Object O1 is 16.3 cm to the left of a converging lens with a 11.7-cm focal length. What is the overall magnification of this system
A new fabric is made to help athletes stay cool. It has a conductivity constant of 94.465 J/(s m K). what is the power of the materials thermal conductivity
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