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If a person eats a popsicle of mass 0.045 kg and temperature -10 C, then how much energy does this person use to bring the popsicle to body temperature (37 C)?
A moving body undergoes uniform acceleration while travelling in a straight line between points X, Y and Z. The distances XY and YZ are both 40m. The time to travel from X to Y is 12s and from Y to Z is 6s.
What phase difference between two otherwise identical harmonic waves, moving in the same direction along a stretched string, will result in the combined wave having an amplitude 1.4 times that of the amplitude of either of the combining waves? Exp..
Light of wavelength 517 nm is used to illuminate normally two glass plates 22 cm in length that touch at one end, How many bright fringes appear along the total length of the plates
An iceboat is gliding on a frozen lake with no propulsive force being applied. Does the horizontal momentum of the boat Change
A copper telephone wire has essentially no sag between poles 34.00 m apart on a winter day when the temperature is -20°C. How much longer is the wire on a summer day.
Two cylinders, made from the same material and having the same length, have radii r1 and r2 with r1 > r2. Find the final angular velocity of the smaller cylinder
An Australian emu is running due east in a straight line at a speed of 17.6 m/s and slows down to a speed of 15.7 m/s in 7.7 s. Assuming that the acceleration remains the same, what is the bird's velocity after an additional 2.0 s has elapsed?
You may solve this problem using either tabulated values from the tables or constant specific heats. Calculate the rate of heat addition
A hunter is standing on flat ground between two vertical cliffs that are directly opposite one another. He is closer to one cliff than the other. find the distance (in m) between the cliffs
24.0g of copper pellets are removed from a 300 ? C oven and immediately dropped into 120mL of water at 24.0 ? C in an insulated cup. What will the new water temperature be
The second minimum in the diffraction pattern of a 0.12 mm -wide slit occurs at 0.68 degrees. What is the wavelength of the light?
A diver 22m deep in 12°C fresh water exhales a 0.8 cm diameter bubble. What is the bubble's diameter just as it reaches the surface of the lake, where the water temperature is 25°C? Hint: suppose that the air bubble is always in thermal equilibriu..
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