Given: The linear expansion coefficient of glass is 9 10 6 ( C) 1. An automobile windshield has dimensions of 64 cm by 169 cm. What minimum spacing around the wind- shield is needed to prevent the windshield from breaking if the temperature changes by 162 F? Answer in units of mm.
A pendulum clock with a brass suspension system is calibrated so that its period is 1 s at 17 C. If the temperature increases to 45 C, by how much does the period change? Answer in units of s. How much time does the clock gain or lose in one week? Answer in units of s.
A rock stuck in the tread of a 59.0cm--diameter bicycle wheel has a tangential speed of 3.50 m/s . When the brakes are applied, the rock's tangential deceleration is 1.50m/s*s . At what time is the magnitude of the rock's acceleration equal to g? (Remember that you need to include...
A scuba diver has her lungs filled to half capacity (1 L) when she is 14 m below the surface. The acceleration of gravity is 9.8 m/s2 . If the diver holds her breath while quietly rising to the surface, what will be the volume of her lungs (in liters) at the surface? Answer in units of L.
A steel tape measure gives the length of a brass rod to be 103 cm when both are at 14 C. What would the tape measure read when the temperature increases to 45 C? The coef- ficients of linear expansion of steel and brass are 1.9 10 5 C 1 and 1.1 10 5 C 1, re- spectively....
A laboratory centrifuge on earth makes n rpm (rev/min) and produces an acceleration of 5.50 g at its outer end. What is the acceleration (in 's, i.e., acceleration divided by) at a point halfway out to the end? This centrifuge is now used in a space capsule on the planet Mercury, where...
please help me on this assignment, especially on questions 1 and 3. The assignment is due tomorrow at 11 am. please. Link: http://www.coursehero.com/file/1150358/ps4/ (from course hero). "
Phys 210B | Fall 2010 Problem Set #4: Applications of Fokker-Planck equation Due date: Wednesday November 24 ok 1. Driven dynamics in random potential|In class, we formulated the problem of a particle driven by a force f in a one-dimensional random potential U(x). You are asked here to...
A bucket filled with dirt of mass 22 kg is suspended by a rope that hangs over a pulley of mass 31 kg and radius 0.15 m (figure below). Everything is initially at rest, but someone is careless and lets go of the pulley and the bucket then begins to move downward. What is the speed of the bucket...
3. Consider Brownian particles of density phi(or ensemble of non-interacting Brownian particles) in fluid of density phi0 at temperature T. For phi0, the force exerted on each particle is approximately f = -mg. Suppose that at some initial time t = 0, all particles are located at some height z0...
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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