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

Aman pushes on a trunk with a force of 250 newtons. the trunk does not move. how much positive work is done on the trunk? 0.0 j -250 j 250 j 125 j

1134567 a jet with mass m = 1.1 ă— 105 kg jet accelerates down the runway for takeoff at 2 m/s2. 1) what is the net horizontal force on the airplane as it accelerates for takeoff? 2.2*10^5 n your submissions: 2.2*10^5 computed value: 220000submitted: saturday, january 26 at 2: 41 pm feedback: correct! 2) what is the net vertical force on the airplane as it accelerates for takeoff? 0 n your submissions: 0 computed value: 0submitted: saturday, january 26 at 2: 41 pm feedback: correct! 3) once off the ground, the plane climbs upward for 20 seconds. during this time, the vertical speed increases from zero to 21 m/s, while the horizontal speed increases from 80 m/s to 95 m/s. what is the net horizontal force on the airplane as it climbs upward? n 4) what is the net vertical force on the airplane as it climbs upward? n 5) after reaching cruising altitude, the plane levels off, keeping the horizontal speed constant, but smoothly reducing the vertical speed to zero, in 13 seconds. what is the net horizontal force on the airplane as it levels off? n 6) what is the net vertical force on the airplane as it levels off?

Compare the patterns of the two waves shown in the image. which statement is true about these waves?