When was the first airplane made?

A ball is projected vertically upwards with an initial velocity of 'u', goes to a maximum height of 'h' before coming to the ground. What is the value of 'h'?

Which is not an idea geologists use as they study the earth?

On a day when the barometer reads 75.23 cm, a reaction vessel holds 250 mL of ideal gas at 20 celsius. An oil manometer (rho = 810 kg/m^3) reads the pressure in the vessel to be 41 cm of oil and below atmospheric pressure.

The controlled release of nuclear energy in a reactor is accomplished by: allowing the critical mass of fuel to react controlling a chain reaction controlling fission without a chain reaction all of the above

The law of conversation of energy states that energy cannot be created or

What is the wavelength of an earthquake wave if it has a speed of 5 km/s and a frequency of 10 Hz?

The gamma ray released by each decay carries 140kev of energy. find the total energy e released by decays in the 2 hours.

Think of the last five things you read. Now think of a type of reading you havent done recenty have never read. What kind of pattern do you see in your reading? What is your favorite type of reading and your least favorite type of reading?

Consider this statement: Air is matter. Which facts best support the statement? A. Balloons can be filled with air. B. Air is essential for life to exist. C. Air has mass. D. Air is not an element. E. To float on air is to be happy. F.

Hydroelectric power uses: wind water coal the sun