Physics, 11.03.2020 04:17 DESIRE44030

A tile-iron consists of a massive plate maintained at 150°C by an embedded electrical heater. The iron is placed in contact with a tile to soften the adhesive, allowing the tile to be easily lifted from the subflooring. The adhesive will soften sufficiently if heated above 50°C for at least 2 min, but its temperature should not exceed 120°C to avoid deterioration of the adhesive. Assume the tile and subfloor to have an initial temperature of 25°C and to have equivalent thermophysical properties of k = 0.15 W/(m∙K) and rhoCp = 1.5⨯106 J/(m3 ∙K).

a) How long will it take a worker using the tile-iron to lift a tile? Will the adhesive temperature exceed 120 degrees C?b) If the tile-iron has a square surface area 254mm to the side, how much energy has been removed from it during the time it has taken to lift the tile?

Answers: 1

Show answers

Another question on Physics

Physics, 21.06.2019 14:40

If you go to a nutrition store and buy a supplement, you can count on the fact that it is pure and safe because supplements are regulated, controlled, and inspected by the fda.

Answers: 1

Answer

Physics, 21.06.2019 17:30

How does convection affect our atmosphere? our layers of earth? our oceans?

Answers: 3

Answer

Physics, 21.06.2019 21:50

When applying kirchhoff's rules, one of the essential steps is to mark each resistor with plus and minus signs to label how the electric potential changes from one end of the resistor to the other. the circuit in the drawing contains four resistors, each marked with the associated plus and minus signs. however, one resistor is marked incorrectly. which one is it?

Answers: 1

Answer

Physics, 22.06.2019 05:20

Very large accelerations can injure the body, especially if they last for a considerable length of time. one model used to gauge the likelihood of injury is the severity index ( ), defined as =/ . in the expression, is the duration of the accleration, but is not equal to the acceleration. rather, is a dimensionless constant that = the number of multiples of that the acceleration is equal to.in one set of studies of rear-end collisions, a person's velocity increases by 13.7 km/h with an acceleration of 36.0 m/s2 . let the + direction point in the direction the car is traveling. what is the severity index for the collision?

Answers: 1

Answer

You know the right answer?

A tile-iron consists of a massive plate maintained at 150°C by an embedded electrical heater. The ir...

Questions