Consider a situation where you exert a force F on a crate of mass m, moving it at a speed v a distance d across a floor in a time interval t.The work you do on the crate is Fv
a. True
b. False
Indicate whether the statement is true or false
False
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For Example Problem 2-26, estimate the temperature drop at the contact surface if the heat transfer is reduced to 3 Btu/hr?ft^2.
What will be an ideal response?
Why did terrestrial planets form in the inner solar system and jovian planets in the outer solar system?
A) As the solar nebula shrank, it settled into a spinning disk and separated into individual planets. B) Denser, heavier materials, such as rocks and metals, settled to the center of the nebula, and therefore, planets that formed there were more likely to be made primarily from rock and metal. C) In the inner part of the nebula, only metals and rocks were able to condense because of the high temperatures, whereas hydrogen compounds, although more abundant, were only able to condense in the cooler outer regions.
An object is thrown upwards with a speed of 14 m/s. How long does it take to reach a height of 5.0 m above the projection point while descending?
A) 0.42 s B) 1.2 s C) 2.4 s D) 3.1 s E) 4.2 s
The orbit of Mercury is more elliptical than that of any other terrestrial planet
Indicate whether the statement is true or false