A neutron collides elastically with a helium nucleus (at rest initially) whose mass is four times that of the neutron. The helium nucleus is observed to move off at an angle θ′2=45∘. The neutron's initial speed is 6.6×105 m/s .
the angle of the neutron after the collision: 76 below the initial direction of the neutron
Determine the speeds of the two particles, v′n and v′He, after the collision.
In: Physics
MATLAB question
The range of a projectile launched at velocity V and angle q
is R=2 V2 sin(q) cos(q)
What should the accuracy of the launch angle have be to keep the uncertainty of the range to within 5%.
In: Advanced Math
For a power supply with full wave bridge rectifier, input voltage is 230 V and required output voltage
is 12 V DC Load resistance is of 100 . Determine output rms voltage, dc current, rms current, power, ac power, efficiency of the rectifier, form factor, ripple factor, transformer utilization factor,
and size of the transformer Draw complete diagram of the supply circuit
In: Electrical Engineering
Write each vector as a linear combination of the vectors in S. (Use
s1 and s2,
respectively, for the vectors in the set. If not possible, enter IMPOSSIBLE.)
S = {(1, 2, −2), (2, −1, 1)}
(a) z = (−8, −1,
1)
z
=
(b) v = (−2, −5,
5)
v
=
(c) w = (1, −23,
23)
w
=
(d) u = (2, −6,
−6)
u =
In: Advanced Math
Use the following data provided to calculate the mass thats needed for the solution.
DDCNa.3H2O (FW=225.31) 50 ml of 2% w/v DDCNa solution in methanol
NaAc.3H2O (FW=136.08) 50 ml of 5% w/v NaAc solution in DI water
CuSO4 .5H2O (FW=249.68) 100 ml of 300 ppm Cu2+ solution in 1% HNO3
In: Chemistry
1. You need 100 mL of 10% (W/V) CuSO4 (FW 160), but only CuSO4 * H2O is available.
2. A procedure requires the use of a 10% (W/V) sodium carbonate (FW 106). Prepare 200 mL using the monohydrate form.
3. Prepare 1 mmol/L Lithium standard from lithium carbonate (Li2CO3). Give the quantity in mg/L.
In: Chemistry
Calculate the directional derivative of f(x,y,z)=x(y^2)+y((1-z)^(1/2)) at the point P(1,−2,0) in the direction of the vector v = 5i+2j−k. (a) Calculate the directional derivative of f at the point P in the direction of v. (b) Find the unit vector that points in the same direction as the max rate of change for f at the point P.
In: Math
Given the following balanced reaction,
O2(g) + 4 H+(aq) + 4 Fe2+(aq) → 2 H2O(l) + 4 Fe3+(aq)
What is the equilibrium constant (K)?
The following information may be useful.
O2(g) + 4 H+(aq) + 4e- → 2 H2O(l) Eº = 1.23 V
Fe3+(aq) + e- → Fe2+(aq) Eº = 0.77 V
In: Chemistry
For a given orbit, the orbital elements are h = 112 km2/s, e = 1.6, i = 30 degrees, omega = 40 degrees, w = 60 degrees, and v = 30 degrees.
i. Find the position vector, r, and velocity vector, v, of a satellite in the perifocal coordinate system.
ii. Convert the position and velocity vectors obtained in part i to the geocentric-equatorial coordinate system
In: Physics
What is the standard reduction potential of the Y1+/Y redox couple if the cell potential of the following cell at 25 oC is 0.98 V?
Zn / Zn2+ (0.34 M) // Y1+ (1.1 M) / Y
Eo =
What is the cathode pH in Co/Co2+(1.00 M)//H1+(x M), H2(1.0 atm)/Pt if E = 0.06 V? Give the pH to 0.01.
pH=
In: Chemistry