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 30.0ยฐc to 8.0ยฐc. 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 ฮดt is the observed temperature change. if the specific heat of liquid water is 4.19 j/gยทยฐc, how much energy was absorbed by the reaction?
Answers: 3
Physics, 22.06.2019 04:30
The pressure increases by 1.0 x 104 n/m^2 for every meter of depth beneath the surface of the ocean. at what depth does the volume of a pyrex (bulk modulus 2.6 x 1010n/m^2) glass cube, 9.8 x 10^โ2m on an edge at the ocean's surface, decrease by 7.5 x 10โ10m^3? explain the formula beyond this point: p=1.0x10^4, b=2.6x10^10, l=9.8x10^โ2, delta v=7.5x10^โ10. at some point l needs to be cubed. why p is divided by delta v?
Answers: 2
Physics, 22.06.2019 17:10
It's a snowy day and you're pulling a friend along a level road on a sled. you've both been taking physics, so she asks what you think the coefficient of friction between the sled and the snow is. you've been walking at a steady 1.5m/s, and the rope pulls up on the sled at a 32 โ angle. you estimate that the mass of the sled, with your friend on it, is 65 kg and that you're pulling with a force of 80 n .
Answers: 1
Physics, 22.06.2019 21:10
Two masses are connected by a rope that hangs over a pulley as shown below. the pulley is a uniform cylinder of radius ํ
=0.381meters and mass ํ=3.1ํํ. initially ํ"is on the ground and ํ#rests 2.5 meters above the ground. if the system is released, use conservation of energy to determine the speed of ํ#just before it strikes the ground. assume the pulley bearing is frictionless.
Answers: 2
A vehicle having a mass 200 kg is moving in smooth surface with acceleration 10m/s square .Calculate...
Computers and Technology, 28.07.2019 18:30
History, 28.07.2019 18:30
History, 28.07.2019 18:30
History, 28.07.2019 18:30
Mathematics, 28.07.2019 18:30
English, 28.07.2019 18:30
History, 28.07.2019 18:30
Mathematics, 28.07.2019 18:30
Mathematics, 28.07.2019 18:30
History, 28.07.2019 18:30
English, 28.07.2019 18:30
History, 28.07.2019 18:30