How many cells are in a grown person body

A 5000-km long cable consists of seven copper wires, each of diameter 0.85 mm, bundled together and surrounded by an insulating sheath. Calculate the resistance of the cable. Use 3x10^-6 cm.Ω for the resistivity of the copper.

Power is equal to voltage multiplied by current. Add the missing information in each of the following power equations. P = V P = R P = V2

Which of the following statements is true about the movement of sound waves? A. they can only travel through a vacuum B. they can travel through air only C. they can only travel through a medium D. they travel fastest in gaseous mediums

7. Which subatomic particle has no charge to it, but does have significant mass: a. electron b. neutron c. proton d. bozon

A scientist is trying to determine the identity of an element. It is highly reactive to water and forms an ionic bond with chlorine. It is also very shiny. The element is likely A. from Group 17. B. from Group 1. C. from Group 15. D. a noble gas.

A wave has a wavelength of 9 mm and a frequency of 14 hertz. What is its speed?

Where would you weigh the most? Mars Pluto Earth The Sun The moon

A large power plant generates electricity at 12.0 kV. Its old transformer once converted the voltage to 425 kV.

Match the example to the type of equipment category it fits best in. A Gym bag, workout clothes, hygiene essentials, proper shoes, water, ipod. B Hockey Stick Baseball Glove. Basketball. Pads. Helmet.

Energy transformations in a bouncy house