# Science

## A 100m steel bridge sits on two concrete abutments and has a mass has a mass of about 1.00×105 kg. Its CG is in the middle of the bridge. A car of 1000 kg is located 40 m from the left end of the bridge and a truck with a mass of 5000 kg is located 60 meters from the same end.

A 100m Steel Bridge Sits On Two Concrete Abutments And Has A Mass Has A Mass Of About 1.00×105&Nbsp;Kg. Its CG Is In The Middle Of The Bridge. A Car Of 1000 Kg Is Located 40 M From The Left End Of The Bridge And A Truck With A Mass Of 5000 Kg Is Located …

## A strip of copper 120 µm wide is placed in a uniform magnetic field of magnitude 0.67 T, perpendicular to the strip. A current i = 23 A is then sent through the strip. Find the ratio of the Hall electric field E to the electric field EC responsible for moving charge (the current) along the length of the strip (E/EC). (The number of charge carriers per unit volume for copper is 8.47 × 1028 electrons/m3and its resistivity is 1.69 × 10-8 ohm-m.)

A strip of copper 120 µm wide is placed in a uniform magnetic field of magnitude 0.67 T, perpendicular to the strip. A current i = 23 A is then sent through the strip. Find the ratio of the Hall electric field E to the electric field EC responsible for moving charge (the current) along the length of the strip (E/EC). …

## A spring is mounted vertically at the bottom of an empty swimming pool. A block of mass= 596 kg is attached to the spring, and it compresses the spring from its equilibrium position by distance xo. Now the swimming pool is filled with fresh water, and the block is submerged. You find the the spring is now extended distance x = 1.61xo from its equilibrium position. Find the density of the block.3kg/m3

A spring is mounted vertically at the bottom of an empty swimming pool. A block of mass M = 596 kg is attached to the spring, and it compresses the spring from its equilibrium position by distance xo. Now the swimming pool is filled with fresh water, and the block is submerged. You find the the spring is …

## The Sunshine Skyway Bridge is 131 m high. A truck crossing the bridge loses a piece of cargo, launching it horizontally and perpendicularly off the bridge at 75 miles per hour. How far does the object travel horizontally before it hits the water?

The Sunshine Skyway Bridge is 131 m high. A truck crossing the bridge loses a piece of cargo, launching it horizontally and perpendicularly off the bridge at 75 miles per hour. How far does the object travel horizontally before it hits the water? Group of answer choices 118 m 137 m 173 m 155 m …

## Consider the planet Mercury with its ancient surface. Can we assume this planet is geologically dead or it there still some activity? If there is activity provide two pieces of evidence supporting the existence of active processes.

Consider the planet Mercury with its ancient surface. Can we assume this planet is geologically dead or it there still some activity? If there is activity provide two pieces of evidence supporting the existence of active processes. EXPERT ANSWER Mercury is not geologically dead, that we can say it from the surface, it is covered …