A horizontal force of magnitude 45.6 N pushes a block of mass 4.28 kg across a floor where the coefficient of kinetic friction is 0.620.
(a) How much work is done by that applied force on the block-floor system when the block slides through a displacement of 2.98 m across the floor?
(b) During that displacement, the thermal energy of the block increases by 40.0J. What is the increase in thermal energy of the floor?
(c) What is the increase in the kinetic energy of the block?
Answers: 1
Physics, 22.06.2019 12:00, shrinu
Selma made a diagram to compare convection and radiation. which label belongs in the area marked x? must involve temperature differences between substances or objects only occurs when molecules are in direct contact involves the movement of fluids based on density differences can occur where there is little or no matter
Answers: 1
Physics, 22.06.2019 12:30, lmolder1329
Consider a 1000 w iron whose base plate is made of 0.5 cm thick aluminum alloy 2024-t6 (ρ = 2770 kg/m3 and cp = 875 j/kg°c). the base plate has a surface area of 0.03 m2. initially, the iron is in thermal equilibrium with the ambient air at 22°c. assuming 90% of the heat generated in the resistance wires is transferred to the plate, determine the minimum time needed for the plate temperature to reach 200°c.
Answers: 1
A horizontal force of magnitude 45.6 N pushes a block of mass 4.28 kg across a floor where the coeff...
Mathematics, 29.11.2021 06:40
Mathematics, 29.11.2021 06:40
Mathematics, 29.11.2021 06:40