Fausto is riding his bike and comes to the bottom of a hill. He has two roads to choose from to get to the top, so he pulls out his topographic map to determine which road will be easier to ride up. The hill has an elevation of 500m. Road A is 5km long, while Road B is 50km long. Calculate the gradient of BOTH roads and determine which road will be easier to ride up.

If steel is more dense that lake water, why can a boat float

On a day when the barometer reads 75.23 cm, a reaction vessel holds 250 ml of ideal gas at 20 celsius. an oil manometer ( ρ= 810 kg/m^3) reads the pressure in the vessel to be 41 cm of oil and below atmospheric pressure. what volume will the gas occupy under s.t.p.?

I'm thinking it's 2 you are asked to explain the earth's magnetic field. which is the best reply? 1. the earth's magnetic south is similar to the north pole of a magnet. 2. the earth's core has a strong magnetic charge similar to the south pole of a magnet. 3. the earth's geomagnetic south is similar to the south pole of a magnet. 4. the earth's magnetic charge is not centered at either pole; it varies based on location.