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A silver medallion is sealed within a transparent block of plastic. An observer in air, viewing the medallion from directly above, sees the medallion at an apparent depth of 1.1 cm beneath the top surface of the block. How far below the top surface would the medallion appear if the observer (not wearing goggles) and the block were under water?
An insulated Thermos contains 145 cm3 of hot coffee at 89.0 °C. You put in an 11.0 g ice cube at its melting point to cool the coffee. By how many degrees (in Celsius) has your coffee cooled once the ice has melted and equilibrium is reached? Treat c..
How much force is the air exerting on the front cover of your textbook? (Assume that the width and the length of the book are 22.9 cm and 28.8 cm, respectively
A 30 kg launching machine fires a 250 gram projectile horizontally at 100 m/s. What was the momentum of the machine
A car drives over a hilltop that has a radius of curvature 120 m at the top of the hill with a speed of 20.0m/s. What is the normal force felt by the car tires
What is the pressure change in water going from a 3.2- cm-diameter pipe to a 1.9- cm-diameter pipe if the velocity in the smaller pipe is 6.5 m/s
When a certain element is bombarded with high-energy electrons, Determine the atomic number Z of the element.
You exert a force of 21 N on the head of a thumbtack. The head of the thumbtack has a radius of 5 mm. What is the pressure on your thumb
You are piloting a spacecraft whose total mass is 1150 kg and attempting to dock with a space station in deep space. Assume for simplicity that the station is stationary, that your spacecraft is moving at 1.15 m/s toward the station, How long shou..
An object falls off of a pier and into the ocean (sea water) where it displaces a total volume of 3.6 cubic meters of sea water. What is the buoyant force acting on the object
A battery with an emf of 12.0 V shows a terminal voltage of 11.0V when operating in a circuit with two lightbulbs rated, What is the battery's internal resistance
A soccer ball lying on the ground is kicked with an initial velocity of 10.0 m/s at an angle of 37 degrees above the horizontal
A 6.0 kg bowling ball traveling 13 m/s collides head-on with a 3.0 kg hunk of putty initially at rest. Assuming a completely inelastic collision (the putty sticks to the bowling ball) what is the speed of the ball just after the collision?
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