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1. A huge explosion is heard 77 kilometers away. How long does it take the sound to travel that far? (Assume ambient air temperature is 24 degrees C). Record your answer to the nearest whole second. No decimal places in your answer. Be careful of your units.
2. The air inside a bicycle tire pump has 178 joules of work done on it as 70 joules of heat are added to it. What is the change in internal energy of the air?
3. An object falls off of a pier and into Lake Michigan (pure water) where it displaces a total volume of 96.81 cubic feet of water. What is the buoyant force acting on the object in newtons? You will need to convert units in order to answer the problem in Newtons.
a 2.0 kg mass is attached to the end of a horizontal spring of spring constant 50 N/m and set into simple harmonic motion with an amplitude of 0.10 m. What is the total mechanical energy of this system
What is the magnitude of the net force on the student. A student who weighs 470N is wearing a backpack that weighs 84N. The student is standing still on level ground.
Where does the laser beam emerge from the block and what is the angle between the emerging ray and the normal to the interface?
A 63 Ω resistor and a 8.0 μF capacitor are connected in series to an ac source. Find the impedance of the circuit if the source frequency is 54 Hertz
A spherical mirror is polished on both sides. What is the magnification when the convex side is used as a mirror, the object remaining the same distance from the mirror
A horizontal bar 2.361 m long with a mass of 91.27 kg is hinged to a wall. What is the angle between the cable and the bar
In your lab is a steel vessel having a volume of 15.0L you charge the vessel with 2.00 moles of H2 and 1.00 moles of O2. What is the partial pressure of the hydrogen
A liquid of density 1.39 × 103 kg/m3 flows steadily during a pipe of varying diameter and height. At location 1 along the pipe the flow speed is 9.35 m/s and the pipe diameter is 12.9 cm.
An obnoxious brat assigns his 0.0215-kilogram pet mouse Mickey the role of stunt mouse by stuffing him into a spring gun and shooting him up into the air at some angle. How high above his initial location in the gun does Mickey soar
Consider the circuit shown in the figure below, where C1 = 2.00 µF, C2 = 9.00 µF, and ?V = 18.0 V. Calculate the final charge on each capacitor
A solid uniform disk of mass M = 8.8 kg and radius R = 21 cm rests with its flat surface on a frictionless table (i.e., the axis of the cylinder is perpendicular to the table.) The diagram shows a top view. A string is wrapped around the rim of th..
A silver wire has a cross sectional area A = 2.0 mm2. A total of 9.4 × 1018 electrons pass through the wire in 3.0 s. What is the drift velocity of these electrons
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