What instrument did navigators use to calculate the positions of the sun and the stars?

a caravel

a carrack

an astrolabe

a compass

Which term describes the minimum distance between two objects required to distinguish them as two separate object?

The "atomic weight" of an atom reflects the average number of A) protons. B) neutrons. C) electrons. D) protons + neutrons. E) protons + neutrons + electrons.

A unit for measuring frequency is the a. hertz. b. watt. c. ampere. d. ohm.

Calculate the kinetic energy in joules of a 10 g bullet moving in 300 m/s

Where tornadose occur in the usa

Determine whether or not there can be forces acting on an object that is at rest

A little boy sitting on the floor tosses a ball in such a way that it reaches the level of a tabletop several meters away, moving horizontally, and rolls across the tabletop at constant speed if friction with the air and the tabletop can be ignored,

An air-traffic controller observes two aircraft on his radar screen. The first is at altitude 900 m, horizontal distance 19.0 km, and 22.5° south of west. The second aircraft is at altitude 1300 m, horizontal distance 17.0 km, and 24.

What is the magnitude of the electric field 23.4 cm directly above an isolated 3.50*10-5 C charge?

If the amount of Adams of each type on the left and right sides of a reaction difference what must be done to balance it