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A snake is sunning itself on a rock.
If the snake is 0.4 m long, what is the approximate amount of radiation it absorbs from the Sun in 15 min? (Assume the snake has a cylindrical shape and ignore both ends, a radius of 0.03 m, and a mass of 1.9 kg. Assume also that the emissivity is 0.5.) Estimate the temperature in the Sun on the rock.
°C
Calculate the amount of radiation the snake absorbs from the Sun in 15 min. (Use your estimates. Note that only half of the snake will face the Sun.)
J
If no heat flows out of the snake via conduction or by evaporative cooling, how much does its temperature increase during 15 min? Assume all the Sun's energy goes into heating the snake and the specific heat of the snake is equal to the specific heat of water. (Use the exact values you enter in previous answer(s) to make later calculation(s).)
K
A 0.50-?F and a 1.4-?F capacitor (C1 and C2, respectively) are connected in series to a 14-V battery. Calculate the charge on each capasitor assuming the two capacitors are in parallel
A runner covers one lap of a circular track 40.0m in diameter in 63.5s a) average speed for that lap? b) average velocity for that lap? c) If she covered the first half-lap in 28.6s , what was her average speed for that half-lap?
A ball of mass .1kg is dropped from a height =11m above the surface of a triangular block of massM=1Kg. The triangular block is at rest on frictionless table and the kinetic energy is conserved during the collision. suppose the ball moves horiz..
The upward velocity of the 5 kg block is v1 = 3 m/s when it is at a height ht = 10 m from the sandy surface. Determine time to stop the motion of the block if the average impulsive force acting on the block
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The 95 mu F capacitor in a defibrillator unit supplies an average of 6500 W of power to the chest of the patient during a discharge lasting 5.0 ms
A muon is created at the top of Mount Nanga Parbat (height 8,100 m) and travels at constant speed to sea level, what is the height of Mount Nanga Parbat
The graphite in a pencil has a resistivity of 7.84×10^?6 W*m. The graphite's diameter is 0.700 mm and its length is 40.0 mm. Find the resistance of this graphite "wire."
A light bulb has a resistance of 230 ?. It is connected to a standard wall socket (120 V rms, 60.0 Hz). Determine the current in the bulb
A 320 piano slides 3.3 down a 24 incline and is kept from accelerating by the man who is pushing back on it parallel to the incline. Determine the work done by the man on the piano.
Resistance are 10N per 1000 for the engine 5N per 1000kg for the trailer. So what's the forward thrust exerted by the engine?
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