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Unit I
The energy we require to live comes from the chemically stored potential energy in food, which is transformed into other energy forms during the metabolism process.
What consequence awaits a person whose combined work and heat output is less than the energy consumed?
What happens when the person's work and heat output is greater than the energy consumed?
Can an undernourished person perform extra work without extra food? Discuss and defend your answers.
Type a 6-7 paragraph essay connecting physical principles with biology. Include your responses to the questions above.
You are an astronaut (m = 115 kg) and travel to a planet that is the same mass and size as Earth. This new planet, however, rotates more rapidly with a period of only 4 h. Considering the centripetal acceleration caused by this rotation, what is the ..
a mass sitting on a horizontal frictionless surface is attached to one end of a spring the other end is fixed to a
Two uniform solid cylinders, each rotating about its central (longitudinal) axis, have the same mass of 3.74 kg, What is the rotational kinetic energy of the smaller cylinder
The electric field in a region of space is oriented along the positive y axis. A circle of radius R is placed in xz-plane. The flux of the electric field by this circle is Φ. The same electric field passing through a second circle of radius 2R parall..
Points A, B, and C are at the corners of an equilateral triangle of side 5 m. Equal positive charges of 5 µC are at A and B, What is the potential at point C
A recent tomb has been unearthed in Egypt that shows the set of wall paintings and hieroglyphics of stars falling to and rising above the horizon over the course of the year (these stars served as sentinels for the pharaoh's passage through the un..
In a friendly game of handball, you hit the ball essentially at ground level and send it toward the wall with a speed of 16m/s at an angle of 38 degrees above the horizontal. How high is the ball when it hits the wall
A rectangular air mattress is 2.0 meter long, 0.50 meter wide and 0.08 meter thick. If it has a mass of 2.0 kilogram, obtain what additional mass can it supports in water
One of the most powerful cranes in the world operates in Switzerland. It can slowly raise a load of M = 5230.0 tonnes to a height of h = 12.0 m, How much work is done by the crane
The Lyman series results from transitions of the electron in hydrogen in which the electron ends at the n=1 energy level. calculate the wavelengths of the photons emitted in the transitions from the energy states
A copper pot with a mass of 0.500 kg contains 0.170 kg of water, and both are at a temperature of 20.0oC. A 0.250-kg block of iron at 85.0 oC is dropped into the pot. What is the final temperature of the system assuming no heat is lost to the surroun..
A 2.96 mA beam of electrons moving at 2.09x106 m/s enters a region with a sharply defined boundary, Find the transmitted and reflected currents
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