An arrow is shot straight up from a horizontal level with an initial velocity of 45j m/s.

A. Find its flight time.
B. Find its position at t=6.0s
C. What is its velocity at t=6.0s
D. Graph v(t) vs. t.

1.  Descriptive questions

v.     In a DC motor, what is a commutator?    (1 point)

vi.     What is asolenoid? (1 point)

vii.     What is the difference between ahydraulic actuator and a pneumatic actuator?(1 point)

viii.      Briefly describe the three phases of the analog-to-digital conversion process?

create a speaker box with a volume of 14400 cubic inches. The box will be used for speakers of various sizes. The speaker box must have a square base and minimal surface area ( prior to cutting holes for the speakers ). Find the box’s dimensions. Your must construct a diagram [ V = LWH ]

Derive the density of states for free electrons as a function of energy E in 1) one-dimension, 2) twodimension, and 3) three-dimension (N=total number of electrons, m=electron mass, V=volume of solid) (Hint: First, derive the total number of electrons as a function of k)

In Fallsview Glatt Kosher Caterers, Inc. v. Rosenfeld, why did it mattter whether the UCC, Article 2 applied? What test did the court use to determine if the UCC or the common law of Contracts applied? In your opinion, what was the most persuasive factor for applying the UCC?

What are your thoughts regarding governmental control over monopolies? Should or should they not be allowed?

In competitive markets, we often face hyper-competition. What are some of the pros and cons of hyper-competitive markets v. those that face less competition?

Please answer with a detailed response.

A potential difference of 4.50 kV is established between parallel plates in air.

If the air becomes ionized (and hence electrically conducting) when the electric field exceeds 3.05×10⁶ V/m , what is the minimum separation the plates can have without ionizing the air?

Answer in mm.

Consider the following accounts which we have utilized this semester. How many of the accounts listed below would be considered temporary?

(i) Unearned Consulting Revenue

(ii) Depreciation Expense

(iii) Sales Returns & Allowances

(iv) Accumulated Depreciation

(v) Allowance for Doubtful Accounts

3.Consider a series RLC circuit.
a) When the capacitor is charged and the circuit is closed, find the condition for the current to be oscillatory.
b) When the circuit is connected to an AC source V = ?0 cos??, find the voltage across the inductor and the
angular frequency at which the voltage across the inductor is maximized.

An LRC series circuit consists of a 3.15 H inductor, a 6.36 ohm resistor, and a 5.48 microFarand capacitor. The combination is connected to an AC votage source that has a peak voltage of 147 V and an angular frequency of 441 rad/s. What is the peak voltage measured across the inductor?