almost 3 years ago

Q/ You lay two cold slabs of materials out in the midday sun. One of them has emissivity of (0.9) while the other has an emissivity of (0.1). Which slab will heat up faster and why?

Remote sensing related questions

rahas

about 6 years ago

Engineering Physics

A very long, uniformly charged cylinder has radius R and linear charge density λ.

A) Find the cylinder's electric field strength outside the cylinder, r≥R. Give your answer as a multiple of λ/ε0.
B) Find the cylinder's electric field strength inside the cylinder, r≤R. Give your answer as a multiple of λ/ε0.

Express your answers in terms of some or all of the variables R, r, and the constant π.

prasanya

over 8 years ago

Engineering Physics

How to find angle of divergence experimentally using laser? how to draw graph and take readings in Holmarc set up.

how to find angle of divergence experimentally using laser? how to draw graph and take readings in Holmarc set up.

Nahr999

over 9 years ago

Engineering Physics

Electric feild

It has been reported that in some instances people near where a lightning bolt strikes the earth have had their clothes thrown off explain why might that happen

IkhfarAdnan

over 9 years ago

Engineering Physics

Physics

. A quarterback throws a football straight toward a receiverwith an initial speed of 20.0 m/s, at an angle of 30.0°above the horizontal. At that instant, the receiver is 20.0 rnfrom the quarterback. In what direction and with whatconstant speed should the receiver run in order to catchthe football at the level at which it was thrown?

IkhfarAdnan

over 9 years ago

Engineering Physics

Physics

Your grandfather is copilot of a bomber, flying horizontally over level terrain, with a speed of 275 m/s relative to the ground, at an altitude of 3000 m. (a) The bombardier realeses one bomb. how far will it travel horizontally between it release and its impact on the ground? neglect the effects of air resistence.(b) Firing from the people on the ground suddenly in capacitates the bombardier before he can call, "Bombs away!" Consequently, the pilot maintains the plane's original of course, altitude,and speed through a storm of flak. where will the plane be when the bomb hits the ground? (c) The plane has a telescopic bomb sight set so that the bobm hits the target seen in the sight at the time of release. At what angle from the vertical was the bomb sight set?

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Recent questions in Engineering Physics

A loose spiral spring carrying no current is hung from a ceiling. When a switch is thrown so that a current exists in the spring, how do the coils move?

Two ropes in a vertical plane exert equal magnitude forces on a hanging weight but pull with an angle of 86.00 between them. What pull does each one exert if their resultant pull is 372 N directly upward?

Let the angle fJ be the angle that the vector 1 makes with the + x-axis, measured counterclockwise from that axis. From the angle fJ for a vector that has the following component: (a) A. = 2.00 m, Ay = -LOOm; (b) A. = 2.00m, Ay = LOOm; (c)A. = -2.00m, Ay = l.00m;(d)Ax= -200m,Ay = -LOOm.

With a wooden ruler you measure the lenglh of a rectangular piece of sheet metal to be 12 mm. You use micrometer calipers to measure lhe width of the rectangle and obtain the value 5.98 mm.What is the difference between the length and width?

Q/ You lay two cold slabs of materials out in the midday sun. One of them has emissivity of (0.9) while the other has an emissivity of (0.1). Which slab will heat up faster and why?

A very long, uniformly charged cylinder has radius R and linear charge density λ.

How to find angle of divergence experimentally using laser? how to draw graph and take readings in Holmarc set up.

Electric feild

Physics

Physics

"How could you increase the entropy of 1mol of a metal that is at room temperature? How could you decrease its entropy?"

Is it possible to change the translational kinetic energy of an object without changing its rotational energy?

"Suppose your roommate is “Mr. Clean” and tidies up your messy room after a big party. Because your roommate is creating more order, does this represent a violation of the second law of thermodynamics?"

Must an object be rotating to have a nonzero moment of inertia?

"Discuss the entropy changes that occur when (a) baking a loaf of bread and (b) consuming the bread."