1.) An automobile has tires with a radius of 0.39m. Starting from rest, it moves in a straight line without skidding through an angular displacement 285 radians. a. How far did the auto travel in meters? b. If it covers this distance in 22.2s, what is its average speed? c. Given it started from rest and its average speed from above, what must be its final speed. d. Find its angular acceleration. e. Find its final velocity in m/s f. Find its acceleration in m/s².

Problem 1 Let A = î - 2ĵ and B = 2î + ĵ. Compute the following vector calculation. A × (A - B) Problem 2 Using the two vectors from the previous problem, compute the following vector calculation. B x (A + B)

Can you solve d and e Thanks

Please solve correctly. Thank you!!

The normalized 1s wavefunction (n = 1, l = 0) of any one-electron atom or ion can be written as 100 (r, 0, 0) = R₁0(r)Y(0,0) = Z3 παρ 3 where Z is the nuclear charge (number of protons) and a = πmpe2 €0h² (a) Construct an integral expression, in r, 0, and that can be used to determine the expectation value for the hydrogen atom potential energy, (V), and evaluate the integrals over and p. Be mindful of the integration volume element. En == e (b) Define x = Zr/ao and use this form to simplify the integral over r and evaluate it (using the tabulated integral provided above) to obtain an expression for (V). Your result should include a factor of V(a). Use the potential energy operator V(r) = where e represents the electron charge and is the permittivity of a vacuum. Express your result in terms of V(a) (that is, express it as something times V(a)). (c) The energy levels of one-electron atoms and ions can be written in terms of a as Z Z²e² (2²72²2) V (ao) = (E) 8περαon2 Using this and your…

Please answer a - h and explain the steps you took.

I having a hard time trying to solve for t since there are decimals. I just dont understand how i would go about doing this. 0.2t2 + 4.997t - 200 =0 Solve for t.

Part A - Practice Problem: In a second contest, the three displacements given are 90.7 m, 20.0 west of north; 15.8 m straight north; and 80.1 m, 41.0 south of east. What magnitude does the winner calculate for the displacement to find the keys to the Porsche? Express your answer in meters. ? A = Submit Request Answer Part B - Practice Problem: What direction does the winner calculate for the displacement to find the keys to the Porsche? Express your answer in degrees. north of east Submit Request Answer

2. I need it now with complete solution please. Thank you.

can you please ans (h),  (I) & (j)?