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An 8.5 gram ice cube at -10°C is put into a Thermos flask containing 200 cm3 of water at 30°C. Find by how much has the entropy of the cube-water system changed when equilibrium is reached? The specific heat of ice is 2220 J/kg•K. (The latent heat of fusion for ice is 333 kJ/kg and the specific heat of water is 4187 J/kg•K).
two speakers emit sound waves with frequency 4.71 khz. they are driven by the same oscillator so that they are in phase
from a fixed point a surveyor locates a pole at 215.6 ft due east and a bulding corner at 358.2 ft at 37.72 degrees
After being accelerated through a potential difference of 5.42 kV, a singly charged carbon ion (12C) moves in a circle of radius 20.8 cm in the magnetic field of a mass spectrometer. What is the magnitude of the field
A block of mass 0.379 kg is placed on the end of a spring which has a stiffness of 216 N/m. It is pulled down 4.40 cm and released. What is the period of oscillation
A satellite of mass M = 270kg is in circular orbit around the Earth at an altitude equal to the earth's mean radius (6370 km). What is the gravitational force on the satellite
question1train springnbspa number of train stations have large horizontal springs at the ends of the tracks. these are
If a bubble in sparkling water accelerates upward at the rate of 0.263 m/s2 and has a radius of 0.694 mm, evaluate what is its mass
A tuning fork generates sound waves with a frequency of 246 Hertz. Find the phase difference between the reflected waves when they meet at the tuning fork
As an object is heated to a very high temperature and becomes self-luminous, What causes the color shift
A 0.88 kg ball is moving horizontally with a speed of 4.9 m/s when it strikes a vertical wall. find the magnitude of the change in linear momentum of the ball
The football started on the ground 63yrds from the base of the goal posts and just barely cleared the 10ft high bar. How long after the ball was struck did it past through the goal posts
A 1.5 kg copper block is given an initial speed of 3 m/s on a rough horizontal surface. Because of friction, the block finally comes to test. If the block absorbs 85% of its kinetic energy, calculate its increase in temperature.
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