Other Problem Solutions: Expert Help and Step-by-Step Explanation

Three objects are connected on the table as shown in Figure . The table is rough and has a coefficient of kinetic friction of .350. The objects have masses of 4.00 kg, 1 kg, and 2.00 kg, as shown, and the pulleys are frictionless. a) Determine The acceleration of each object and their directions. b) Determine The tensions in the two cords.

A copper cube, 0.30 m on a side, is subjectd to two shearing forces, each of magnitude${\displaystyle F=6.0\cdot {10}^{6}N}$ (see the drawing). Find the angle (in degrees), which is one measure of how the shape ofthe block has been altered by shear deformation.

The symbol t in the capacitor discharge formula ${\displaystyle q=q_0{e}^{-\frac{t}{R}C}}$   stands for:
the duration during which C loses almost all of its original charge
the time it takes for C to lose thefraction 1/e of its initial charge 
the time constant 
the time it takes for C to lose thefraction (1 - 1/e) of its initial charge none of these

Solve $\{\begin{array}{l}2x+3y=-1\\ 6x+3y=-9\end{array}$

A pure capacitor is connected to an AC power supply. Inthis circuit, the current
A) leads the voltage by ${\displaystyle {90}^{\circ }}$.
B) lags the voltage by ${\displaystyle {90}^{\circ }}$.
C) lags the voltage by ${\displaystyle {180}^{\circ }}$.
D) is in phase with the voltage.
E) none of the given answers

For the following polynomial, $P(x)=x^3–2x^2+4x^5+7$, what is: 1) The degree of the polynomial, 2) The leading term of the polynomial, 3) The leading coefficient of the polynomial.

1.) Question: The molecular formula C2H4O can be converted into three-line bond (Kekule) structures that are consistent with valence rules. Which one of the following Kekule structures is not consistent with valence rules? Explain why the structure you chose is not consistent with valence rules.
a) 
b) 
c) 
d) 
2.) Question: Propose a structure for a molecule that meets the following description. Contains one sp3 hybridized carbon and two sp2 hybridized carbons.
3.)Equation 2-1: Refer to the following equation to answer the questions below. Place the letter corresponding to the correct answer in the blank.
4.) Refer to equation 2-1. Will this reaction take place as written? Explain.
5.) Put a box around all the Lewis acids in the group of compounds below.

Consider the circuit in the drawing.

Determine:
(a) the magnitude of the current in the circuit.
(b) the magnitude of the voltage between the points labeled A and B.
(c) State which point, A or B, is at the higher potential.

17. A planar coil of wire has a single turn. Thenormal to this coil is parallel to a uniform and constant (in time)magnetic field of 1.7 T. An emf that has a magnitude of 2.6 Vis induced in this coil because the coil's area A isshrinking. What is the magnitude of ? A/? t, whichis the rate (in $m^2/s$) at which the area changes?

Sir Lancelot rides slowly out of the castle at Camelot andonto the 12.0 m long drawbridge that passes over the moat Figure. Unbeknownst to him, his enemies have partially severed the vertical cable holding up the front end of the bridge so that it will break under a tension of ${\displaystyle 5.80\times {10}^3}$ N. The bridge has mass 200 kg and its center of gravity is at its center. Lancelot, his lance, his armor, and his horse together have a combined mass of 600 kg. Will the cable break before Lancelot reaches the end of the draw bridge? If so, how far from the castle end of the bridge will the center of gravity of the horse plus rider be when the cable breaks?