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Question: A certain gasoline engine has an efficiency of 26.0%. What would the hot reservoir temperature be for a Carnot engine having that efficiency, if it operates with a cold reservoir temperature of 190°C?
If possible just a brief explanation how you got the answer?
A polar bear of mass 327 kg stands on an ice floe 129 cm thick. What is the minimum area of the floe that will just support thebear in saltwater of density of 1030 kg/m3
What is the comet's average distance from the sun?
A spring whose stiffness is 1000 N/m has a relaxed length of 0.49 meter. evaluate the change in the potential energy of the spring
A certain gyroscope consists of a uniform disk with a 56 cm radius mounted at the center of an axle that is 13 cm long and of negligible mass. what is the precession rate
The masses of the particles are m1 = m3 = 5.0 kg and m2 = m4 = 8.0 kg. Find out the moment of inertia of the system about the z axis.
A small boat is headed for a harbor 34 km directly northwest of its currentposition when it is suddenly engulfed in heavy fog. The captainmaintains a compass bearing of northwest and a speedof 10.8 km/h relative to thewater.
Two vehicles A & 13 are traveling west and south, respectivelytoward the same direction where they collide and lock together.Before the collision A (total weight 900lb) is moving with a speedof 40mi/h and B (1200 lb) has a speed of 60 mi/h.
An object, at the top of a very tall building, is released from rest and falls freely due to gravity. Neglect air resistance and compute distance covered by the object between times t1 = 5.5 s and t2 = 7.9 s after it is released.
A certain species of ionized atoms produces an emission line spectrum according to the Bohr model, but the number of protons Z in the nucleus is unknown. Obtain the next-to-the-longest wavelength in the series of lines
You sing into a well and find that the well resonates at frequencies of 220 Hz and 260 Hz with no resonances between these two frequencies. What is the depth of the well
Determine how many time constants does it take for a charging capacitor to reach half of its maximum charge
The density of ice is 917 kg/m^3, and the density of sea water is 1025 kg/m^3. A swimming polar bear climbs onto a piece of floating ice that has a volume of 5.2m^3. What is the weight of the heaviest bear that the ice can support without sinking com..
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