Given a maximum magnetic field gradient of 40 mt/m and magnetic field of 3t, how homogenous must the magnet be (in parts per million) to enable a spatial resolution of 1 mm to be acquired.

Which fundamental force is the unification of two forces? A. Gravity B. Electromagnetic force C. Strong nuclear force D. Weak nuclear force

A 5kg box is pulled by a rope with a force of 5N in the horizontal direction at a constant speed. What is the friction force between the box and the floor?

A ramp, a doorstop, and a car jack are made with at least one of which of the following simple machines? A. wheel and axle B. inclined plane C. lever D. pulley

A cell phone tower is most likely to produce electromagnetic waves at which of these frequencies? A. 108 waves per second B. 1016 waves per second C. 1020 waves per second D. 1013 waves per second

What is the net force that acts on a 10-N falling object what it encounters 4 N of air resistance? 10 N of air resistance?

You're going to open the door further by giving it a brief, hard push. first, you'll push the door at its center. then, you'll push it near the door knob. both pushes are equally hard, and last the same length of time.

In which phenomenon does Earth's magnetic field play an important part? A retaining gases around Earth to form the atmosphere B. stratifying the atmosphere into layers c. movements of tectonic plates D. spreading of the sea floor E.

Make sure that you spend extra time warming up during - O O A. spring B. cold weather O c. the afternoon O D. a heat wave

Which of these forces could speed up a baseball? A) Applied and Frictional forces B) Applied and Gravitational forces C) Frictional and Gravitational forces

When you are travelling downhill on a roller coaster, you experience a light feeling in your stomach. why?