Which of the following is not a way that a U-235 atom could fission? 235
92
U+
1
0
n →
144
Bat
56
90
36
Kr+2
n+energy
0
O A.
94
235
92
U+
0-
n →
141
52
Te+
Zr+2
n+energy
0
40
0
B.
1
139
1
235
92
U+
n →
Te +
94
Zr +3
40
n+energy
0
52
0
C.
1
1
235
92
n+energy
U+
141 92
Bat Kr +3
56
36
n->
0
0
O D.
SUBMIT

Part f - example: finding two forces (part i) two dimensional dynamics often involves solving for two unknown quantities in two separate equations describing the total force. the block in (figure 1) has a mass m=10kg and is being pulled by a force f on a table with coefficient of static friction îľs=0.3. four forces act on it: the applied force f (directed î¸=30â above the horizontal). the force of gravity fg=mg (directly down, where g=9.8m/s2). the normal force n (directly up). the force of static friction fs (directly left, opposing any potential motion). if we want to find the size of the force necessary to just barely overcome static friction (in which case fs=îľsn), we use the condition that the sum of the forces in both directions must be 0. using some basic trigonometry, we can write this condition out for the forces in both the horizontal and vertical directions, respectively, as: fcosî¸â’îľsn=0 fsinî¸+nâ’mg=0 in order to find the magnitude of force f, we have to solve a system of two equations with both f and the normal force n unknown. use the methods we have learned to find an expression for f in terms of m, g, î¸, and îľs (no n).

Do you agree with scientist’s prediction about the warming of alaska and other polar regions?

Física: un futbolista patea hacia el arco con una velocidad de 15m/ah, calcular: a)el alcance para un ángulo de tiro de 25? , b) el tiempo que el balón permanece en el aire.