Physics, 08.02.2020 03:40 sarahelrod9
Aconcrete highway is built of slabs 12 m long (20°c). how wide should the expansion cracks between the slabs be (at 20°c) to prevent buckling if the range of temperature is -30° to +50°c? (12 x 10⁻⁶ °c⁻¹ for concrete)
Answers: 3
Physics, 21.06.2019 14:50, Theresab2021
Ingrid wrote the hypothesis below. if the temperature of a liquid increases, the density of the liquid decreases because the particles move farther apart. what are the variables in her hypothesis?
Answers: 3
Physics, 22.06.2019 18:00, abigail018
Which statement is true if the refractive index of medium a is greater than that of medium b? a. total internal reflection is possible when light travels from air to medium b to medium a. b. total internal reflection is possible when light travels from medium a to medium b. c. total internal reflection is possible when light travels from medium b to medium a. d. total internal reflection is possible when light travels from air to medium a. e. total internal reflection is possible when light travels from air to medium b.
Answers: 1
Physics, 23.06.2019 00:30, cici65360
Asmall electric heater, immersed in 80g of water in a calorimeter of 40j/k raises the temperature from 10.5 degree celsius to 25 degree celsius in 12 minutes. using the same apparatus with 50g of oil instead of water, it is found that the temperature of oil rises from 7 degree celsius to 27 degree celsius in 10 minutes. find specific heat capacity of the oil.
Answers: 2
Aconcrete highway is built of slabs 12 m long (20°c). how wide should the expansion cracks between t...
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