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Why did the War Industries Board establish standardized specifications during World War I?  For example, all shoes had to be black, brown, or white.

______________  challenged the laws banning contraceptive information and devices.  She place the birth-control movement at the heart of the new feminism.  She was sent to jail because she distributed contraceptive devices to poor immigrants.

In Buck v. Bell (1927), the Supreme Court ruled against Carrier Buck.  What did the Court say to reject Buck’s plea?

The idea of the melting-pot _______________.

Which statement is TRUE about the textile strike in Lawrence, Massachusetts, in 1912?

What was one new way that companies marketed goods to Americans during the Progressive era?

_______________   was  a Progressive-era idea that American workers were entitled to a wage high enough to allow them full participation in the nation’s mass consumption economy.

In the figure, a crate of mass m = 30 kg is pushed at a constant speed up a frictionless ramp (θ = 40°) by a horizontal force F. The positive direction of an x axis is up the ramp, and the positive direction of a y axis is perpendicular to the ramp. The magnitude of F is.

In the figure, a stone is projected at a cliff of height h with an initial speed of 39.0 m/s directed at an angle θ0 = 61.0 ° above the horizontal. The stone strikes at A, 5.18 s after launching. The height h of the cliff is

In the figure below, elevator cabs A and B are connected by a short cable and can be pulled upward or lowered by the cable above cab A. Cab A has mass 1680 kg; cab B has mass 1500 kg. A 30 kg box of catnip lies on the floor of cab A. The tension in the cable connecting the cabs is 1.90 ×104 N. What is the magnitude of the normal force on the box from the floor?