Whom or what did President Roosevelt describe as "the rattlesnakes of the Atlantic"?

U. S. Navy ships and their crews

German U-boats and their crews

Axis nations and their leaders

Japanese warplanes and their pilots

Which is the best description of the scientific theory

What planet has the most visible rings

Two solid spheres of radius R made of the same type of steel are placed in contact. The magnitude of the gravitational force they exert on each other is F1.

Two slightly out of tune instruments will creat beats when the same note is played

Refraction occurs when a wave changes its A) color. B) frequency. C) intensity. D) speed.

A rectangular loop of wire with sides 0.262 and 0.401 m lies in a plane perpendicular to a constant magnetic field (see part a of the drawing). The magnetic field has a magnitude of 0.

In the system you're inspecting the damper motor isn't working, You decide to see if the damper-postion sensor us sending the proper signal to the which then signals the damper motor. A. heating coil B. duckwork c. energy source D. controller

Which of the following statements does not describe the structure of an atom? a. An atom has a small, dense center called the nucleus. b. Inside the nucleus of an atom are protons and electrons. c. Protons are positively charged sub-atomic particles.

A. Which skill related fitness component is your strongest and weakest?

A 100 N box is placed on an inclined plane that makes a 30° angle with the horizontal. Calculate the component of gravitational force that acts down the inclined plane. A. 25 N B. 50 N C. 87 N D. 100 N