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An antifreeze solution is made by mixing ethylene glycol (? = 1116 kg/m3) with water. Suppose the specific gravity of such a solution is 1.05. Assuming that the total volume of the solution is the sum of its parts, determine the volume percentage of ethylene glycol in the solution.
You make a plot of displacement (Y ? Y0) in meters versus spring force (Fs) in Newtons for the data you have collected in lab and use LoggerPro to fit a line to your data. Calculate the spring constant and its uncertainty
A person driving her car at 53.0 km/h approaches an intersection while the traffic light turns yellow. She knows that the yellow light lasts only 2s before turning to red.
A bottle containing 5 kg of water at a temperature of 15C is placed in a refrigerator, How much heat is transfered from the water to cool it to 1C
A bird is flying directly toward a stationary bird-watcher and emits a frequency of 1040 Hz, What is the speed of the bird, expressed as a percentage of the speed of sound
A cylindrical glass cup has mass m and height h. When the cup is full, it can hold a mass of water equal to 6m. Find the height of water in the cup
Two identical small insulating balls are suspended by separate 0.22-m threads that are attached to a common point on the ceiling. Determine the tension in the threads
A 738-N man stands in the middle of a frozen pond of radius 4.0 m. He is unable to get to the other side because of a lack of friction between his shoes and the ice. How long does it take him to reach the south shore
Zach, whose mass is 64kg , is in an elevator descending at 10m/s. What is Zach's apparent weight while the elevator is braking
An object of mass 1.0kg is attached to a spring with spring constant 15 N/m. what is the amplitude of oscillation
A 0.360 kg pendulum bob passes through the lowest part of its path at a speed of 2.86 m/s, When the pendulum reaches its highest point, what angle does the cable make with the vertical
A skydiver of mass 80.5 kg jumps from a slow-moving aircraft and reaches a terminal speed of 50.7 m/s. What is the drag force on the skydiver when her speed is 50.7 m/s
A hoop of mass 1.9 kg and radius 55 cm has a string wrapped around its circumference and lies flat on a horizontal frictionless table. What is the angular velocity of the hoop about its center of mass after 2 s
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