Greg has decided to incorporate earth science into his teaching with snowflakes. as he walks around the room, he notices that many of the children are drawing the traditional snowflakes as seen on tv or books. how can greg encourage them to expand their thinking?
a. by asking them to go outside and study real snowflakes.
b. by drawing his interpretation of a snowflake and having them copy it.
c. by explaining that they need to "think outside the box."
d. by asking them to describe their snowflakes and get them to think back to real experiences with snowflakes.

The ballistic pendulum was invented in 1742 by english mathematician benjamin robins. it consists of an initially stationary pendulum that moves after being struck by a bullet, and it is used to measure the original velocity of the bullet. the known variables are the bullet's mass m, the pendulum's mass m, and the height to which the block and bullet swing, determined by the length of the pendulum l and final angle θ. two principles of physics are necessary to solve for the bullet's original velocity. what are these principles? conservation of momentum and newton's third law conservation of energy and conservation of angular momentum grade summary deductions 0% potential 100% conservation of momentum and newton's second law. newton's second law and conservation of angular momentum. conservation of energy and newton's third law conservation of momentum and conservation of angular momentum. conservation of momentum and conservation of energy conservation of energy and newton's second law.

1.what is where an object is located 2. what is how fast an objects speed is changing 3. what is how fast an object is moving

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final