One hectare is defined as 10 4 m2. One acre is 4 ✕ 10 4 ft2. How many acres are in one hectare?

What is the function of an electrical motor in terms of electric power and motion?

An electron in the n = 7 level of the hydrogen atom relaxes to a lower energy level, emitting light of 397 nm. what is the value of n for the level to which the electron relaxed?

A 12-kg dog jumps up in the air to catch a ball. The dog's center of mass is normally 0.20 m above the ground, and he is 0.50 m long. The lowest he can get his center of mass is 0.

What is 9/15 as a percentage

Search for 39 05 52.46N 84 30 56.16E and zoom out to an eye altitude of ~30,000 ft. The large-scale structures in this sedimentary environment are asymmetrical ripples (known as dunes at this size).

An air-core solenoid consists of 200 turns of wire wound on a form that is 71 cm long and has a inner diameter of 6 cm. A current of 22 A is established in this solenoid.

A thermometer measures its own temperature? What does it mean?

How do you find momentum

A 60-W light bulb and a 100-W light bulb are both rated at 120 V. Which light bulb has the larger resistance? the 60-W bulb

What is the innermost layer of the sun's atmosphere called?