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?

A rescue helicopter is hovering over a person whose boat has sunk. one of the rescuers throws a life preserver straight down to the victim with an initial velocity of 1.46 m/s and observes that is takes 1.8 s to reach the water.

Which of the following is an example of a measurement of velocity? a. 1 m b. 1 m/s c. 1 m/s² d. 1 m/s north

Someone presents you with a machine they have invented and tells you that the machine makes you stronger than you really are because it has a mechanical advantage of 1.0. Will this machine really make you stronger? A.) Yes, a MA value of 1.

An aircraft as loaded weighs 4,954 pounds at a CG of 30.5 inches. The CG range is 32.0 inches to 42.1 inches. Find the minimum weight of the ballast necessary to bring the CG within the CG range. The ballast arm is 162 inches.

Explain how energy from the Sun created music.

A hot air balloon is hovering in the air when it drops a 40 Kg food package to some lost golfers. If the package is dropped from an altitude of 500 m and air resistance can be neglected, how fast is the package moving when it hits the ground?

you often hear people particularly TV announcers talk about "high rate of speed" what do you think they mean according to the specifics of physics definitions what are they really saying

What is the value of x in the equation Ix - 3y = 30, when y = 15?

32. How much work is done pushing an 80 N box 2 m across ue surtout What work is done? a. 40 J c. 160 J b. 20 J d. 240 J

Which is a resource that the National Park Service manages? A. memorials B. wildlife refuges C. ecosystems D. endangered species