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When you look down into a swimming pool or lake, are youlikely to underestimate or overestimate its depth? Explain. How does the apparent depth vary with the viewing angle? (Use raydiagrams)
How much is the time measured by an astronaut in a spaceship for a class on the Earth that lasts for one hour (the time measured on the Earth),
A 15 V constant voltage battery is connected to 120 kΩ resistora. How many electrons pass through the resistor each second
A hot air balloon decends toward the ground with a velocity of (1.6 m/s)y hat. A champagne bottle is opened to celebrate takeoff, How long does the cork remain in the air
If the bar has mass of 200g, a length of 15 cm, and th magnetic field has a magnitude of 0.2T, what must be the minimum current(direction and magnitude) to lift the bar
In a certain automobile engine with an efficiency of 19.2%, combustion of gasoline in one cylinder releases 490 J of heat. Find the total mechanical power produced by all four cylinders, operating at 48 cycles/s, or 2880 rpm
A blackened, solid copper sphere that has a radius equal to 2.5 cm hangs in an evacuated enclosure whose walls have a temperature of 29°C. find the initial rate at which its temperature changes
Determine the maximum percent uncertainty it will produce in this experiment if we did not align the apparatus to minimize its effects
From 2 meters inside the water, a fish sees the Sun at an apparent angle of 60.0° above the horizontal. What is the actual elevation angle of the Sun
Two moles of an ideal diatomic gas have an initial pressure of 4:00 atm and initial volume of 16:0 L. What are the initial and final temperatures of the gas
The sensor in the torso of a crash-test dummy records the magnitude and direction of the net force acting on the dummy. If the dummy is thrown forward with a force of 570N while simultaneously being hit from the side with a force of 2400-N, what f..
Two isotopes of carbon, carbon-12 and carbon-13, have masses of 1.993 10-26 kg and 2.159 10-26 kg, Determine the spatial separation between the two isotopes after they have traveled through a half-circle
Two objects with masses of 3.90 kg and 6.40 kg are connected by a light string that passes over a frictionless pulley, Determine the acceleration of each object
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