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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 middle C string on a piano is under a tension of 977 N. The period and wavelength of a wave on this string are 3.82 ms, Find the linear density of the string
A car travels north at 28.9 m/s for 14.3 min. It then travels south at 40.1 m/s for 28.5 min. a) What is the total distance the car travels? b) What is the displacement of the car?
What is the final angular velocity
In an experiment, 300 g of aluminum (with a specific heat of 900 J/kg·K) at 100°C is mixed with 54.0 g of water (4186 J/kg·K) at 20°C, What is the entropy change of the aluminum-water system
A 12 volt battery powers a circuit that consists of a ten ohm resistor in series with a ten ohm and a 15 ohm that are in parallel. How much current flows through the 15 ohm resistor
For the motion from the initial free until the piece of wood comes to rest, what is the total amount of work completed by friction.
A horizontal beam of electrons initially moving at 3.4 107 m/s is deflected vertically by the vertical electric field between oppositely charged parallel plates.
A coil of wire, initially carrying no current, has a current of 10 A established in .4 seconds. Determine the self-inductance of the coil
Find out the dividends per share for preferred and common stock for each year. Prepare a brief memo (no more than 120 words) giving the arguments for and against offering this preferred stock. In the memo also briefly mention other methods of obtai..
a proton and an electron have the same kinetic energy upon entering a region of constant magnetic field. What is the ratio of the radii of their circular paths?
A rifle with a barrel length of 56 cm fires a 14 g bullet with a horizontal speed of 350 m/s/s. The bullet strikes a block of wood and penetrates to a depth of 13 cm.
A kid slides down from the top of a 3m high frictionless slide. When he reaches the bottom of the slide, he travels over a 2m long carpet with a 0.20 coefficient of kinetic friction, What height does he return to on the slide
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