Physics, 31.07.2019 19:20, harleycochran2ovyt3n
The specific heat of a 101 g block of material is to be determined. the block is placed in a 25 g copper calorimeter that also holds 60 g of water. the system is initially at 20°c. then 125 ml of water at 80°c are added to the calorimeter vessel. when thermal equilibrium is attained, the temperature of the water is 54°c. determine the specific heat of the block.
Answers: 3
Physics, 22.06.2019 18:30, kayleahrayne
Ablock of mass m slides on a horizontal frictionless table with an initial speed v0 . it then compresses a spring of force constant k and is brought to rest. the acceleration of gravity is 9.8 m/s2. how much is the spring compressed x from its natural length? 1) x = v0*sqrt(k/(mg)) 2) x=v0*sqrt(m/k) 3) x=v0*((mk)/g) 4) x=v0*sqrt(k/m) 5) x=v0*(m/kg) 6) x=v0*sqrt((mg)/k) 7) x=(v0)^2/(2g) 8) x=v0*(k/(mg)) 9) x=(v0)^2/(2m) 10) x=v0*((mg)/k)
Answers: 3
Physics, 23.06.2019 02:00, hgg44137
Employer informs its employees that it will hold a substantial cash prize drawing for each work group at the end of each month in which no employee in the work group sustains a lost-time injury. tyra reports an injury that she sustained while operating a mechanical power press. tyra did not violate any employer safety rules when she sustained her injury. tyra’s injury requires her to miss work for two days. her employer cancels the cash prize drawing for that month for tyra’s work group because of tyra’s lost-time injury. did the employer misuse an incentive program to retaliate against tyra?
Answers: 3
The specific heat of a 101 g block of material is to be determined. the block is placed in a 25 g co...
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