Answers: 3
Physics, 22.06.2019 12:30
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
Physics, 22.06.2019 16:30
An astronaut in space cannot use a scale or balance to weigh objects because there is no gravity. but she does have devices to measure distance and time accurately. she knows her own mass is 77.4 kg , but she is unsure of the mass of a large gas canister in the airless rocket. when this canister is approaching her at 3.50 m/s , she pushes against it, which slows it down to 1.30 m/s (but does not reverse it) and gives her a speed of 2.60 m/s . what is the mass of the canister?
Answers: 1
Physics, 22.06.2019 19:50
Aleaky 10-kg bucket is lifted from the ground to a height of 15 m at a constant speed with a rope that weighs 0.7 kg/m. initially the bucket contains 45 kg of water, but the water leaks at a constant rate and finishes draining just as the bucket reaches the 15-m level. find the work done. (use 9.8 m/s2 for g.) show how to approximate the required work by a riemann sum. (let x be the height in meters above the ground. enter xi* as xi.) lim n → ∞ n (9.8)(45−3 xi) i = 1 δx express the work as an integral. 0 dx evaluate the integral. (round your answer to the nearest integer.) j
Answers: 3
Acceleration: A water rocket can reach a speed of 75 m/s in 0.050 seconds from launch. What is its a...
Social Studies, 28.05.2021 06:50
Social Studies, 28.05.2021 06:50
Mathematics, 28.05.2021 06:50
Mathematics, 28.05.2021 06:50
Chemistry, 28.05.2021 06:50
Mathematics, 28.05.2021 06:50
Mathematics, 28.05.2021 06:50
Mathematics, 28.05.2021 06:50
Mathematics, 28.05.2021 06:50
English, 28.05.2021 06:50
Mathematics, 28.05.2021 06:50