A teenager walks 400m from her home to the grocery store and then return her home. If she left her house at 4:53 pm and returned home st 5:37pm what is average speed in m/s what is average velocity

How do density and buoyancy play a role in it's ability to float?

What is the approximate size of Earth's magnetic field? Where are Earth's magnetic poles? Where is the magnet that causes Earth's magnetic field located? What is this magnet made of? Does Earth's magnetic field move?

A small sphere with mass 5.00.*10-7kg and charge + 3.00μC is released from rest a distance of 0.600 m above a large horizontal insulating sheet of charge that has uniform surface charge density σ=+8.00pC/m2.

If you change a single base in a codon then 1. the codon could code for nucleic acids instead of amino acids 2. the codon could code for a different amino acid 3. the dna strand containing the codon could fall apart 4.

Name the device which converts: chemical into light

It is epistemically possible that a completed physics might include which of the following propositions? O Souls and other spiritual substances exist O God created the universe O Matter is unreal O All of the above

The weight of an object varies inversely with the second power of the distance from the center of Earth. The radius of Earth is approximately 4000 miles.

The chemical reaction of oxygen with other substances is called A. erosion. B. oxidation. C. exfoliation. D. acidification.

Find the net charge of a system consisting of 6.16*106 electrons and 7.68*106 protons. Express your answer using three significant figures. Qnet = 2.43*10-13 C

A motorist is driving at 20m/s when she sees that a traffic light 200m ahead has just turned red. She knows that this light stays red for 15s, and she wants to reach the light just as it turns green again. It takes her 1.