A 6.5-g iron meteor hits Earth at a speed of 295 m/s. If its ...

[jho37]

A 6.5-g iron meteor hits Earth at a speed of 295 m/s. If its kinetic energy is entirely converted to the thermal energy of the meteor, by how much will its temperature rise? The specific heat of iron is 113 cal/kg  C, and 1 cal = 4.186 J.
 
  A) 92.0 C
  B) 57,100 C
  C) 0.147 C
  D) 384 C

Question 2

If we double the resistance in a circuit but keep the current through it constant, the power dissipated by that circuit will
 
  A) be four times as great.
  B) be two times as great.
  C) be one-half as great.
  D) be one-fourth as great.

[lorealeza]

Answer to Question 1

A

Answer to Question 2

B

[jho37]

Excellent

[samiel-sayed]

TYSM