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A 50-g block of copper at -15?C is added to 100g of water in a 71-g aluminum cup. The cup and the water have an initial temperature of 4.0?C. Find the equilibrium temperature of the cup
A large punch bowl holds 3.90kg of lemonade (which is essentially water) at 24.0?C. A 5.80×10-2-kg ice cube at -10.0?C is placed in the lemonade. What is the amount of ice (if any) remaining
discrete inquires at a company situated on the lake and employee confesses to you that they have been dumping 89 g/min for years but that the dumping has now stopped. If lake has a residence time of
In a series RCL circuit the dissipated power drops by a factor of 8.0 when the frequency of the generator is changed from the resonant frequency to a nonresonant frequency
A trapeze artist performs an aerial maneuver. While in a tucked position, what is her rotational speed
In the following conditions calculate the moles of hydrogen and the pressure in each flask where the volume is negligible. Each flask is originally 275K with .455 mols of hydrogen gas and .7atm of p
A glass window 0.45cm thick measures 90cm by 35cm . If the inside and outside temperatures differ by 18?, By what factor is the rate of heat transfer reduced
The tangential speed of a particle on a rotating wheel is 3.5m/s. how long will the particle take to make one revolution
The vapor pressure of water at 45.0 degrees celcius is 71.93 mmHg. Calculate the vapor pressure of a solution of 1.50m K2CO3 at this temperature
A 89.3-kg horizontal circular platform rotates freely with no friction about its center at an initial angular velocity of 1.53 rad/s. Find the angular velocity of the platform with its load
The reaction is first-order in N2O5, with the specific rate constant 6.08 x 10-4/s. Calculate the reaction rate at these conditions. a. [N2O5] = 0.200 mol/L b. [N2O5] = 0.319 mol/L
You measure the length of a distant car to be subtended by an angular distance of 1.0 degrees. approximately how far away is the car
A vertical spring has one end attached to the ceiling and a 2.50 kg weight attached to the other one. find how fast the weight is moving
Compute the wavefunction and the probability to tunnel, for a proton in the potential: V(x)=0, when x< -0.20 nm, and x>0.00 nm, and V(x)=2.0*10-19 J otherwise.
A description of a land feature anywhere on Earth that has been sculpted by physical and chemical weathering processes and description of the particular processes that changed your chosen land feature
A diffraction grating 22.0mm wide has 6000 rulings. Light of wavelength 592nm is incident perpendicular on the grating. What is the largest value of theta at which maxima appear on a distant viewing s
A mixture containing only BaSO4 and CaSO4 contains one-half as much Ba2+ as Ca2+ by weight. What is the percentage of CaSO4 in the mixture
A train has a mass of 5.22 ? 106 kg and is moving at 79.0 km/h. The engineer applies the brakes, What is the final speed of the train
An object of mass 1.9 kg starts from rest and slides down an inclined plane 80 cm long in 0.46 s
A 2000 kg car is slowed down uniformly from 23.0 m/s to 5.00 m/s in 4.40 s. What average total force acted on the car during that time
Calculate whether or not the given point is a solution to the system and write the system in non-matrix form
A 5.1 kg bucket of water is raised from a well by a rope. find the force exerted by the rope on the bucket.
How long does it take the Sun to melt a block of ice at 0?C with a flat horizontal area 1.0 m2 and thickness 1.3cm
A 2.00kg block is pushed against a 400N/m spring, compressing it 22.0 cm. When the block is released, find the speed of the block just after leaving the spring
A 4.15 g lead bullet traveling at 316 m/s is stopped by a large tree. what is the increase in temperature of the bullet