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

a caravel

a carrack

an astrolabe

a compass

What would be the resistivity of a perfect conductor in ohm-meters? 0 1 100 Infinity A current of 3.50 A flows through the leads of an electric appliance. How long does it take for 6.50 C of charge to pass through the leads? 1.8 s 22.8 s 0.5 s 10 s

Pluto is different from the outer planets in all of the following ways except which one?

A person is filling a knee-high bucket with water using a garden hose and holding it such that water discharges from the hose at the level of his waist.

What would your average speed have to be in order to complete the race in 4.5 hours? Give your answer in kilometers per hour. 38.4 kilometer race

What is one of the benefits that scientists have discovered from organisms' daily exposure to radioisotopes? 1. being able to Carbon date fossils 2. X-ray Imaging capability 3. radiation treatment for cancer 4. invention of microwave cooking

What is the formula for calculating the mass when i have the number of volume and density

What is the name for potential difference that causes current to flow? (A) electric charge (B) static discharge (C) voltage

How is a herpetologist and a ecologist similar

In an oscillating lc circuit, when 75.0% of the total energy is stored in the inductor's magnetic field, (a) what multiple of the maximum charge is on the capacitor and (b) what multiple of the maximum current is in the inductor?

What happens when the spaceship in the animation has zero horizontal velocity?