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A person with a mass of 75kg and a height of 1.83m is exercising. In 1.5 hours of exercise, they burn 260L of oxygen. What is the metabolic rate of their activity?
A. 427 Cal/hr m2
B. 197 Cal/hr m2
C. 361 Cal/hr m2
D. 511 Cal/hr m2
E. 482 Cal/hr m2
F. 631 Cal/hr m2
A 0.80 kg mass is attached to a light spring with a force constant of 23.9 N/m and set into oscillation on a horizontal frictionless surface. determine maximum speed of the oscillating mass
A toy train engines (2.5Kg) is moving 0.25m/s when it collides with a car (1.6Kg) moving 0.15 m/s in the same direction, Find the speed of the engine-car combination as they move off together
A 250-g cart is accelerated down a track by a net force of 35 N. What is the acceleration of the cart
A typical AAA battery has stored energy of about 3400 J. (Battery capacity is typically listed as 625 mA h, meaning that much charge can be delivered at approximately 1.5 V.) what must the area of each plate be
The electricity received at an electric substation has a potential difference of 2.80 10^5V. If the requires output is 440V, what must be the ratio of the turns of the step-down transformation.
A 755 N man stands in the middle of a frozen pond of radius 8.0 m. He is unable to get to the other side because of a lack of friction between his shoes and the ice. How long does it take him to reach the south shore
A point charge is accelerated from rest through a potential difference of 150V and gains a speed V0, What speed (in terms of V0 ) would it gain if it were accelerated through 275V instead
A man of mass 73.9 kg and density 970 kg/m3 stands in a shallow pool with 33.5 % of the volume of his body below water
An interesting recent development is a growing awareness of bacteria. It's now realized that the total biomass of bacteria on earth far outweighs all animals, plants, and other complex living beings put together. A recent claim is that "there are 10 ..
The coefficient of static and kinetic frictions between a 3.0-kg box and a desk are 0.40 and 0.30, respectively. What is the net force on the box
What is the temperature of the junction point?
Find the degree of superheat at the boiler outlet.- The equivalent Carnot cycle thermal efficiency of the lawn mower.
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