10.
A scientist student proposes a laboratory experiment to combine nuclei of krypton -96 (96 36 kr
and barium-139 ( 139 56 Ba), along with neutrons, to form uranium -235 (235 92 U). The
experiment is highly unlikely to be successful because
A. the threshold energy of the reaction is extremely high
B. the reaction energy is a positive value that is extremely high
C. the reaction energy is essentially zero
D. uranium-235 has a long half-life
Each fission in a nuclear reactor provides 200mev. How much uranium-235 has to undergo fission per unit time to provide 2000mw of thermal power? Let 1u=1.6605 x 10^-27 kg and m_p=1.00727u
A.3.2mg
B.2.0mg
C.2.5mg
D.3 5mg

We all use gps today, even if we don't drive yet. i bet you have been in the car with a parent and they have asked you to get out your phone to find a specific location. in your car, on the phone, you are using a very sophisticated technology. gps satellites circle the earth twice a day in a very precise orbit and transmit signal information to earth. gps receivers take this information and use trilateration to calculate the user's exact location. essentially, the gps receiver compares the time a signal was transmitted by a satellite with the time it was received. the time difference tells the gps receiver how far away the satellite is. now, with distance measurements from a few more satellites, the receiver can determine the user's position and display it on the unit's electronic map. what type of signal is utilized by the gps satellite?

Distinguish between a transverse wave and a longitudinal wave.

The magnetic field inside a superconducting solenoid is 4.50 t. the solenoid has an inner diameter of 6.20 cm and a length of 26.0 cm. determine (a) the magnetic energy density in the field and (b) the energy stored in the magnetic field within the solenoid.