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A submerged scuba diver looks up toward the calm surface of a freshwater lake and notes that the Sun appears to be 32 degrees from the vertical. The diver's friend is standing on the shore of the lake.At what angle above the horizon does the friend see the sun?
A 0.6410-kg ice cube at -12.40°C is placed inside a chamber of steam at 365.0°C. calculate the final temperature of the puddle
An aluminum rod is 20.0 cm long at 20°C and has a mass of 350 g. If 12,500 J of energy is added to the rod by heat, what is the change in length of the rod
An electron moving along the x axis has a position given by x = 12 te-t m, where t is in seconds. How far is the electron from the origin when it momentarily stops
A cube of mass m = 7.25 kg is placed on an inclined plane of mass M = 12.47 kg, which makes an angle ? = 39.80° with the horizontal. What is the normal force on the inclined plane
Bill and Julie are both now on identical trains. Bill's train is moving to the right with velocity (/2)c with respect to Julie's train. How long does Bill measure Julie's train to be
70 grams of water at 85°C are mixed with an equal amount of water at 15°C in a completely insulated container. How much heat is gained by the cold water
An electric car accelerates for 8.0 s by drawing energy from its 345-V battery pack. During this time, Find the minimum horsepower rating of the car
A circular coil (500 turns, radius=.195m) is rotating in a uniform magnetic field. At t=0 s. Find the magnitude of the magnetic field at the location of the coil
A charge of -2.615"mu"C is located at (2.915m , 4.400m ), and a charge of 1.705"mu"C is located at (-2.641m , 0). Find the electric potential at the origin. Express your answer using three significant figures
In our Physics lab, a cart is attached to a failing fan which does not run at a constant speed. Find the power delivered to the particle when it is at x = 1.5 m
The log has a mass m= 984 kg; the truck has a mass M=8750 kg. Calculate the minimum coefficent of static friction u needed to keep the log in the back of the truck
An inductor has a cross-sectional area of .03m2 and a length of 4 cm. When the current running through it changes from 6A to 10 A in .2 s
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