What units are assumed for speed limit signs in the United States

What is the name for the narrowing at the muzzle end of a shotgun barrel?

A coaxial cable carries a current I = 0.02A through a wire of radius Rw=.2mmin one direction and an identical current through the outer sheath of radius Rs=3.4mm in the opposite direction. Determine the magnetic field everywhere.

Often in Physics we will show a frame of reference as a

an object moving with a speed of 5 m/s has a kinetic energy of 100 J. what is the mass of the object?

Which of the following is an example of a trend? the gradual warming of earths atmosphere over time the cyclic rising and falling of the tides. the phases of the moon the random assortment of coins in a jar.

A thin cylindrical shell and a solid cylinder have the same mass and radius. The two are released side by side and roll down, without slipping, from the top of an inclined plane that is 1.8 m above the ground.

The water in a lake is at 5 °C. A diver measures the pressure of the water at two different depths in the lake. He repeats the measurements on a different day when the water is at 15°C.

A hot spot is an area where material from deep within the mantle rises and melts through the crust above it. True or False

Which suspect is one who wrote the suicide note? Question 1 options: George Roberts Karen Roberts Mary Roberts John Huddleston

What happens when an atom is exposed to an energy source such as electricity? The electrons may jump to a higher energy level. The electrons move closer to the nucleus. The electrons may move to a lower energy level.