Author Question: How much energy is stored in a room 3.0 m by 4.0 m by 2.4 m due to the earth's magnetic field with a ... (Read 72 times)

theo · **on:** Jul 29, 2018

How much energy is stored in a room 3.0 m by 4.0 m by 2.4 m due to the earth's magnetic field with a strength of 5.0 10-5 T? (0 = 4 10-7 T m/A)

A) 29 mJ B) 57 mJ C) 10 mJ D) 100 mJ E) 570 mJ

Question 2

The Q value for a particular reaction is -2.4 MeV, and the reaction's threshold energy is 9.60 MeV. What is the ratio of the mass of the incident particle to the mass of the stationary target nucleus?

A)

-0.75
B)

0.25
C)

3
D)

4
E)

5