Physics, 04.12.2019 06:31 lanashanabJHsbd1099
A32.5 g iron rod, initially at 21.8°c, is submerged into an unknown mass of water at 63.3°c, in an insulated container. the final temperature of the mixture upon reaching thermal equilibrium is 58.9°c. what is the mass of the water?
Answers: 1
Physics, 22.06.2019 11:30
Where is the potential energy throughout the loading, cocking, and releasing of the trebuchet?
Answers: 2
Physics, 22.06.2019 17:40
Emmy kicks a soccer ball up at an angle of 45° over a level field. she watches the ball's trajectory and notices that it lands, two seconds after being kicked, about 20 m away to the north. assume that air resistance is negligible, and plot the horizontal and vertical components of the ball's velocity as a function of time. consider only the time that the ball is in the air, after being kicked but before landing. take "north" and "up" as the positive ‑ and ‑directions, respectively, and use ≈10 m/s2 for the downward acceleration due to gravity.
Answers: 2
Physics, 22.06.2019 21:20
People with normal vision cannot focus their eyes underwater if they aren't wearing a face mask or goggles and there is water in contact with their eyes. in a simplified model of the human eye, the aqueous and vitreous humors and the lens all have a refractive index of 1.40, and all the refraction occurs at the cornea, whose vertex is 2.60 cm from the retina.with the simplified model of the eye, what corrective lens (specified by focal length as measured in air) would be needed to enable a person underwater to focus an infinitely distant object? (be careful-the focal length of a lens underwater is not the same as in air! assume that the corrective lens has a refractive index of 1.62 and that the lens is used in eyeglasses, not goggles, so there is water on both sides of the lens. assume that the eyeglasses are 2.05cm in front of the eye.)
Answers: 3
A32.5 g iron rod, initially at 21.8°c, is submerged into an unknown mass of water at 63.3°c, in an i...
Mathematics, 30.07.2019 06:10
Mathematics, 30.07.2019 06:10
Mathematics, 30.07.2019 06:10
Mathematics, 30.07.2019 06:10