Hydrogen gas would be a product of the reaction of
a. vinegar and baking soda.
b. iron and hydrochloric acid.
c. oxygen and methane.
d. HCl and NaOH.
b
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The following steady-state stage II creep rates were recorded for a nickelbase superalloy:
(a) Evaluate all of the terms in the stage II creep-rate equation. Use the strain rate at 811 K and 60 MPa to evaluate the term A.
(b) Determine the stage II creep rate for a stress of 40 MPa and a temperature of 800 K.
Suppose an object is placed 6.0 cm in front of a lens that has a focal length of 4.0 cm. Where is the image located? What are the magnification and the character of the image?
What will be an ideal response?
What is the resolving power of a diffraction grating that is capable of just distinguishing between two wavelengths of 568.20 nm and 569.60 nm? (1 nm = 10?9 m)
a. 1.10 b. 406 c. 487 d. 812 e. 568.9
Newton's Second Law in 1 Dimension: A 40-kg crate is being lowered with a downward acceleration is 2.0 m/s2 by means of a rope.(a) What is the magnitude of the force exerted by the rope on the crate?(b) What would be the magnitude of the force exerted by the rope if the crate were being raised with an acceleration of 2.0 m/s2?
Fill in the blank(s) with the appropriate word(s).