What is meant by critical angle of indence?

What is the current produced by a potential difference of 240 Volts through a resistance of. 2 ohms

Which of these actions will decrease heat transfer between two objects

how much work does an elephant do while moving a circus wagon 23 meters with a pulling force of 250N at an angle of 38 degrees?

How do the positions of the sun and moon affect what people do?

Describe two changes of state that releases energy

The force of attraction between two oppositely charged pith balls is 5.3 * 10-6 newtons. If the charge on the two objects is 6.7 * 10-9 coulombs, what is the distance between the two charges? (k = 9.0 * 109 newton·meter2/coulombs2)

To describe velocity you need to know?

Mohammed made a chart to list examples and nonexamples of projectile motion. Which best completes the chart? a - a football thrown in the airb - a kite flying on a stringc - a golf ball rolling off a table d - water spraying from a fountain

Halley's Comet appears around the sun about once every 76 years. It passes through the part of its orbit nearest the sun in just a few months but then moves out to great distances and takes more than half a century for the rest of its orbit.

In order to hike around a portion of Lake Allatoona, a tour guide determines that he must take his group 150 m east, 60 m north, then 75 m west.