The direction of a field line at a point in space shows the direction of the force that would act on a body placed at the point

a. True
b. False
Indicate whether the statement is true or false


True

Physics & Space Science

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A conical pendulum is constructed with a string 2.00 m in length. The pendulum is set in horizontal circular path the vertical axis. If the angle the string makes with the vertical axis is 45.0 degrees, then the angular velocity of the conical pendulum is

A. 4.00 rad/s. B. 3.55 rad/s. C. 3.04 rad/s. D. 2.63 rad/s. E. 2.01 rad/s.

Physics & Space Science

Instructions: On occasion, the notation will be a shorthand notation for .

A vector is added to  . The resultant vector is in the positive x direction and has a magnitude equal to . What is the magnitude of ? A. 11 B. 5.1 C. 7.1 D. 8.3 E. 12.2

Physics & Space Science

Electron Speed: Given that the speed of an electron in the ground state of hydrogen is 2190 km/s, what is the speed of an electron in the n = 4 orbit of hydrogen?

A. 547 km/s B. 31,000 km/s C. 139 km/s D. 178 km/s E. 2180 km/s

Physics & Space Science

A mass m is launched from the surface of the Earth with speed v. The diagram shows three possible launch directions; order them according to the maximum height the projectile will reach, from greatest height to least height

Physics & Space Science