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Question1
You hold a brick at rest in your hand.
(a) How numerous forces act on the brick?
(b) Recognize these forces.
(c) Are these forces equivalent in magnitude and opposite in direction?
(d) Are these forces an action-reaction pair? Elucidate.
Question2
Discounting pressure of the atmosphere, if you swim twice as deep in water, how much more water pressure is exerted on your ears? If you swim in saltwater, will pressure be greater than in freshwater at the same depth? Why or why not give reason?
Question3
We can learn terrestrial planets up close by landing on them; however jobian planets have no surfaces to land on. Assume that you are in charge of planning a long-term mission to "float" in the atmosphere of a jovian planet. Explain technology you would use and how you would make sure survival for any people assigned to this mission.
The howler monkey is the loudest land animal and can be heard upto a distance of 2.5 km. The acoustic power emitted by the howler, in mW is
An object of heat capacity 100 cal/C is initially at 30.0C. Estimate the resulting entropy change of the universe
The treasure map in the figure gives the following directions to the buried treasure, Which direction should you go to reach the treasure and How far should you go to reach the treasure
If the polar coordinates of the point ( x , y ) are ( r , ? ), determine the polar coordinates for the following points
A stationary destroyer is equipped with sonar that sends out pulses of sound at 35.000 MHz. If the speed of sound in seawater is 1.57 km/s, find the depth of the submarine
A charged capacitor is connected to an ideal inductor. At time t = 0, the charge on the capacitor is equal to 6.00 µC. What is the amplitude of the current at that same instant
A sliding bar has a length of .547m and moves at 2.34m/s in a magnetic field of magnitude .204T. The resistance in the circuit is .698ohms. find the new speed of the rod
Two identical positive charges exert a repulsive force of 6.4* 10^-9 N when separated by a distance of 3.8*10^-10 m. find the charge of each.
A disc has a radius of 2.20 cm and a mass of 27.0 grams and is initially at rest. Starting at time t=0, two forces are applied tangentially to the rim as indicated, calc the moment of inertia of the uniform disc
An astronaut is being tested in a centrifuge. The centrifuge has a radius of 3.58 m, what is the magnitude of the astronaut's linear speed
A pilot is flying an airplane that is used for aeriel surverying to make a map of ground detail of New Jersey. If the scale of the map is to be 1:50,000 and the camera has focal length of 6in
Water leaks out of a dam through a small hole 4.2 m below the level of the water behind the dam. Find the speed of the water emerging from the hole
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