Today, Earth's magnetic field is losing approximately 7 percent of its strength every 100 years. If the

strength of Earth's magnetic field at its surface is 0.5 gauss today, what will it be 100 years from now?

Sonja, the skater rolls down a ramp 50 meters and finishes in 5 seconds. what is her speed?

How is the wavelength of a longitudinal wave determines?

A car travels from Boston to Hartford in 4 hours. The two cities are 240 kilometers apart. What was the average speed of the car during the trip? A. 4 km/hour B. 36 km/hour C. 960 km/hour D. 60 km/hour

Which statement best describes how atoms differ from molecules? OA. An atom can be broken down into smaller particles of matter. OB. An atom cannot form chemical bonds with other atoms of the same element. OC.

What is displacemnet

The tip of a triangle is held 12.0 cm above the surface of a flat pool of water. A submerged swimmer in the pool sees the tip of the triangle at what distance above the water? Let the indices of refraction nwater = 1.33 and nair = 1.00.

What is a lever used for?

What did the romans build as a step toward environment management

Accelerations are produced by equal forces or unequal forces?

A wave travels through a medium. As the wave passes, the particles of the medium vibrate in a direction perpendicular to the direction of the wave's motion. The wave is a. longitudinal. c. electromagnetic. b. a pulse. d. transverse.