Which element, represented by x, reacts with fluorine to produce the compound xf2? (1) aluminum (3) calcium (2) argon (4) sodium

A unit for measuring frequency is the A. watt. B. hertz. C. ampere. D. ohm.

You go and choose a solid chemical rocket which expels gas from the engine at 3 kilometers per second. The rocket has a total mass of 2 kg with the fuel being 1 kg. The theoretical maximum speed of this rocket is:

Why don't satellites in orbit fall to the ground? Why they don't fly off into space?

Which part of the female reproductive system produces ova? A. ovary B. Fallopian tubes C. uterus D. vagina E. vulva

A heavy turntable, used for rotating large objects, is a solid cylindrical wheel that can rotate about its central axle with negligible friction. The radius of the wheel is 0.330 m.

Smaller bits of rock that pass through the atmosphere and slam into Earth's surface are called a. asteroids. b. meteors. c. meteorites. d. meteoroids.

What is the conversion from 1.2 mm to m

Which sentence contains italicized words that are used as an infinitive phrase? A. Kelly went to the grocery store. B. Tom went there for some flour. C. Mark wanted to go, but not today. D. Jane parked her car behind a truck.

The difference in electric potential between a thunder cloud and the ground is 1.53 108 V. Electrons move from the ground which is at a lower potential to the cloud which is at a higher potential.

A vitamin called folic acid is very important for neural tube development, which is the development of the baby's