Answers: 1
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?
Answers: 3
Physics, 22.06.2019 01:40
Crowbar of 5 metre is used to lift an object of 800 metre if the effort arm is 200cm calculate the force applied
Answers: 1
Physics, 22.06.2019 05:00
At time t=0, a particle is located at the point (3,6,9). it travels in a straight line to the point (5,2,7), has speed 8 at (3,6,9) and constant acceleration 2i−4j−2k. find an equation for the position vector of the particle.
Answers: 2
Physics, 22.06.2019 05:40
Unpolarized light of intensity i_0=750w/m^2 is incident upon two polarizers. after passing through both polarizers the intensity is i_2=280w/m^2. (a) what is the intensity of the light after it passes through the first polarizer in w/m^2? (b) write an equation for the angle between the polarizers in terms of the initial (i_0) and final (i_2) intensities. (c) find the angle between the polarizers in degrees.
Answers: 3
What kind of change does shot peening cause in a sheet of metal?...
Computers and Technology, 01.04.2021 17:50
Chemistry, 01.04.2021 17:50
Mathematics, 01.04.2021 17:50
History, 01.04.2021 17:50
Mathematics, 01.04.2021 17:50
Biology, 01.04.2021 17:50
Mathematics, 01.04.2021 17:50
Physics, 01.04.2021 17:50
Mathematics, 01.04.2021 17:50
Mathematics, 01.04.2021 17:50
History, 01.04.2021 17:50
Mathematics, 01.04.2021 17:50