Which of the following actions could a person do to show how heat moves through conduction? А
A camper melts some marshmallows by holding them over a campfire.
B
A person uses an electric blanket to warm up on a cold evening.
с
A chef waits as pasta noodles rise and fall in a pot of boiling water.
D
A farmer heats up a metal rod to use as a brand by placing it into a fire.

Which graph represents motion with an object with positive velocity that is located at a position of 3 meters at a time of 0 seconds? a) a b) bb eliminate c) c d) d

Visualize the problem and identify special cases first examine the problem by drawing a picture and visualizing the motion. apply newton's 2nd law, ∑f⃗ =ma⃗ , to each body in your mind. don't worry about which quantities are given. think about the forces on each body: how are these consistent with the direction of the acceleration for that body? can you think of any special cases that you can solve quickly now and use to test your understanding later? one special case in this problem is if m2=0, in which case block 1 would simply fall freely under the acceleration of gravity: a⃗ 1=−gj^.

Awave that is traveling fast can be said to have a high a. frequency b. speed c. wavelength d. amplitude e. period f. none of these