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Erika is on an elevator and presses the button to go down.
When the elevator first begins moving, it has an acceleration of 2.5 m/s2 downward.
Erika and the elevator have a combined mass of 1250 kg.
a) Draw a free-body diagram for the elevator.
b) What is the tension in the cable that provides the upward force on the elevator car?
defferent between work and heat
Polystyrene film is extruded flat and free from pin-holes. Film is made from polystyrene granules by extruding heated tube of polymer which is then spread out and stretched state.
what is the use of dead load?
A plane e-m wave goes along vertical downward direction. At a provided instant, the direction of E at a point is towards east. Find the direction of B?
Specific heat of a gas is numerically equivalent to the amount of heat essential to raise the temperature of unit mass of gas by 1 0 C. In order to raise the temperature of unit ma
Ampere's Law is a relation among cause and effect. When Ampere's law is write in the form below on which side of the equation is the cause and on which side of the equation is the
SECOND DEFINITION OF IMPULSE: It can be described as, "The change in momentum produced by the force of impulse".
For germanium the forbidden gap is (A) 0.15ev. (B) 0.25ev. (C) 0.5ev. (D) 0.7ev. Ans: For germanium the forbidden gap is 0.7ev.
10 to20words
Laws of Refraction: There are two laws of refraction. The incident ray, the refracted ray and the normal to the surface of the point of incidence all lie at the similar plan
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