A1.05 kg block slides with a speed of 0.865 m/s on a frictionless horizontal surface until it encounters a spring with a force constant of 457 n/m . the block comes to rest after compressing the spring 4.15 cm. find the spring potential energy, u, the kinetic energy of the block, k, and the total mechanical energy of the system, e, for compressions of (a) 0 cm, (b) 1.00 cm, (c) 2.00 cm, (d) 3.00 cm, (e) 4.00 cm.
Answers: 3
Physics, 21.06.2019 23:00
Acoal-fired plant generates 600 mw of electric power. the plant uses 4.8 x 10^6 kg of coal each day, and the heat of combustion of coal is 3.3x 10^7 j/kg. the steam that drives the turbines is at a temperature of 300° c, and the exhaust water is at 37° c. (a) what is the overall efficiency of the plant for generating electric power? (b) how much thermal energy is exhausted each day? (c) what is the change in entropy of the universe for this heat engine? (d) using the same heat reservoirs, what is the maximum possible (carnot) efficiency for a heat engine?
Answers: 1
Physics, 22.06.2019 05:20
Given the position vector of the particle r(t)=(t+1)i+(t^2−1)j+2t k, find the particle's velocity and acceleration vectors at t=1
Answers: 1
Physics, 22.06.2019 16:30
The ph is the a.independent variable b.the dependent variable c.control group
Answers: 1
A1.05 kg block slides with a speed of 0.865 m/s on a frictionless horizontal surface until it encoun...
Advanced Placement (AP), 20.05.2021 01:00
Mathematics, 20.05.2021 01:00
Mathematics, 20.05.2021 01:00
English, 20.05.2021 01:00
World Languages, 20.05.2021 01:00
Social Studies, 20.05.2021 01:00
Mathematics, 20.05.2021 01:00
Mathematics, 20.05.2021 01:00
Spanish, 20.05.2021 01:00