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Q. An insulated Thermos contains 190 cm3 of hot coffee at 83.0°C. You put in an 18-g ice cube at its melting point to cool the coffee. By how various degrees (in Celsius) have your coffee cooled once the ice has melted and equilibrium is reached? Treat the coffee as though it were pure water and avoid energy exchanges with environment. The specific heat of water is 4186 J/kg•K. The latent heat of fusion is 333 kJ/kg. The density of water is 1.00 g/cm3.
what force is needed to pull a 150 pound sled along a horizontal surface? The coeficient of kinetic friction is 0.10 and the sled is pulled by a rope that makes the angle of 0 degree with the horizontal. There is no acceleration.
Coherent light with wavelength 603 passes through two very narrow slits, and the interference pattern is observed on a screen a distance of 3.00 from the slits.
Two small insulating spheres with radius 4.00×10-2 are separated by a large center-to-center distance of 0.595. One sphere is negatively charged, with net charge -2.40, and the other sphere is positively charged, with net charge 3.70. The charge i..
At an outdoor market, a bunch of bananas attached to the bottom of a vertical spring of force constant 16.0 N/m is set into oscillatory motion with amplitude of 20.0 cm.
Compute the momentum of the bullet
What shape would you expect the sampling distribution of x bar for n=84 juveniles to have? Does your answer depend on shape of the distribution of verbal IQ scores for all juveniles.
What is the tension in each cable if angle between each and the direction the crate moves is 12°.
If vector "B" is added to vector C =3.0i + 4.0J, the result is a vector in the positive direction of the y axis, with a magnitude equal to that of vector "C". What is the magnitude of vector "B".
Calculae the flow rate ( in grams per second) of blood in the aorta if the flow speed is 42 cm/s.
How does the solar nebula theory describe the dramatic density difference between the terrestrial and Jovian planets.
When a certain spring is stretched by an amount x, it produces a restoring force of F(x) = ax=bx^2, where a and b are constants. How much work is done through an external force in stretching the spring by an amount D from its equilibrium length.
A race car has a mass of 702kg. It starts from rest and travels 42 m in 3 s. The car is uniformly accelerated during the entire time. What net force is exerted on it.
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