Assets<5000) (branch) 14.5 Suppose that a B+ -tree index on (branch-name, branch-city) is available on relation branch. A. (branch -city<"Brooklyn") (branch) b. (branch -city="Brooklyn") (branch) c. (branch...
The seminal work of Selinger et al. A. Union and set difference b. Left outer join 14.16 Give an example of an expression defining a materialized view and two situations (sets of statistics for the input relations and the differentials) such that incremental view maintenance is better than...
17.11 Explain the reasons why recovery of interactive transactions is more difficult to deal with than is recovery of batch transactions. Is there a simple way to deal with this difficulty?
18.3 Instead of storing shared structures in shared memory, an alternative architecture would be to store them in the local memory of a special process, and access the shared data by interprocess communication with the process. What would be the drawback of such an architecture?
A) X rays have higher frequency than radio waves. 29) Which of the following statements about X rays and radio waves is not true? A) X rays have higher frequency than radio waves. B) X rays and radio waves are both forms of light, or electromagnetic radiation. C) X rays have higher energy...
A glider attached to both springs is located between the springs. When the glider is in equilibrium, spring 1 is stretched by extension xi1 to the right of its unstretched length, and spring 2 is stretched by xi2 to the left. A horizontal force is then applied to the glider to move it a...
24) An object (mass m) attached to a spring (constant k) is placed in a liquid as shown. The retarding force on the object is proportional to its speed (Use proportionality constant b). What is the equation of motion for the system for oscillatory motion of that object?
The speed of the car vs as it rounds this curve is vs = 0.649 vc . If the mass of the car is 2000 kg, what is the magnitude of the frictional force needed to keep it from sliding sideways?
What is the relationship between surface area and frictional forces, given the same normal force (mass)? Support your claims by providing evidence. Include your best one/two block graph. Additional questions for report: (1) What variables influence frictional forces? (2) How does the normal...
What is the direction of the electric field at point P, on the perpendicular bisector of the rod? Velocity of flow makes angle A full Gaussian surface encloses two of the four positively charged particles. Which of the particles contribute to electric field at point P on the surface? A full...
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1. Can you show me step by step how to solve this problem?:
- The Earth’s rate of rotation is constantly decreasing, causing the day to increase in duration. In the year 2000 the Earth takes about 0.548 s longer to complete 365 revolutions than it did in the year 1900.
- (a) What is the average angular acceleration of the Earth?
- (b) If this average acceleration remains constant, in what year will the Earths rotation come to rest?
2. I do not understand this Ideal Gas Law and Kinetic Theory question. Can you help me set it up?
- A spherical balloon is made from a material whose mass is 3.00-kg. The thickness of the material is negligible compared to the 1.5-m radius of the balloon. The balloon is filled with helium (He) at a temperature of 305-degrees K and just floats in the air, neither rising nor falling. The density of the surrounding air is 1.19-kg/m^3. Find the absolute pressure of the helium gas