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a star appears to be red in the night sky. is the star traveling toward the eart...
Answers: 3
Physics, 22.06.2019 00:10
The energy released by a chemical reaction can be measured using a calorimeter. when barium hydroxide octahydrate crystals are reacted with dry ammonium chloride inside of a coffee cup calorimeter, the temperature of the 18.00 g of water in the calorimeter decreases from 30.0°c to 8.0°c. the equation for calculating energy absorbed or released by a reaction is: where q is the energy released or absorbed, m is the mass of water in the calorimeter, cp is the specific heat of water, and δt is the observed temperature change. if the specific heat of liquid water is 4.19 j/g·°c, how much energy was absorbed by the reaction?
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Physics, 22.06.2019 01:00
An incident ray through the focal point of a spherical mirror will: reflect through the center of curvature. reflect back through the focal point. reflect parallel to the principle axis. reflect the same direction as the incident ray.
Answers: 1
Physics, 22.06.2019 12:10
Light traveling in water, nwater = 1.33, strikes a plastic block at an angle of incidence of 51.4°; part of the beam is reflected and part is refracted. if the index of refraction of the plastic is 2.0, what is the angle made by the reflected and refracted beams?
Answers: 2
Physics, 22.06.2019 17:30
Does heating a metal wire increase or decrease its electrical resistance? why?
Answers: 1
Mathematics, 04.07.2021 03:00
Chemistry, 04.07.2021 03:00
Mathematics, 04.07.2021 03:00
Mathematics, 04.07.2021 03:00
Computers and Technology, 04.07.2021 03:00
Computers and Technology, 04.07.2021 03:00
Mathematics, 04.07.2021 03:00
Mathematics, 04.07.2021 03:00
Computers and Technology, 04.07.2021 03:00