Explanation:
This is a simple harmonic motion, produced by the action of a driving force that is directly proportional to the position of the body. Its position is described as a function of time by a sinusoidal function. According to Newton's second law and Hooke's law:
Here m is the object's mass, k is the spring constant and x is the displacement from the equilibrium position.
With , called natural frequency, A is the amplitude, that is the maximum displacement for the equilibrium position and is the initial phase.
Answer:
CH4
Explanation:
CH4 is joined together by a covalent bond, aka a bond between two non-metals. Non-metals are found on the right side of the periodic table and include Carbon (C) and Hydrogen. Although Hydrogen is technically on the left side of the table, it has the characteristics of a non-metal. Futhermore, Ionic bonds generally are between an element on the right joined with an element on the left. This is because ionic bonds want charges that will cancel out to create a neutral molecule.
example: LiF
Li→ Li+
F→F-
(Li+)+(F-)=charges cancel out.
Height increase h = R*(1 - cosΘ) = 1.2*(1-cos3.5°) = .00224 m.
<span>½Mbl*Vbl² = Mbl*g*h → </span>
<span>Vbl = √(2gh) = .2095 m/s </span>
<span>This is the initial velocity of the block. From momentum considerations, </span>
<span>Mbt*Vbt = Mbl*Vbl → </span>
<span>Vbt = (Mbl/Mbt)*Vbl = (5/.002)*.2095 = 523.8 m/s
this is what i think the answer is im not for sure though... hope it helps...</span>
Answer:
B) the potential drop is always the same across each resistor
Explanation:
Resistors are said to be in parallel if they are connected in different branches, and the end of each branch corresponds to the end of the other branches: so that, they are connected to points at same voltage. So, resistors in parallel have the same potential drop across them.
Therefore, we can analyze each statement:
A) the largest resistance has the largest current through it. --> FALSE. The current through each resistor is given by Ohm's law:
where V is the potential drop and R the resistance. As we see, since the voltage is constant, the larger the resistance, the less the current.
B) the potential drop is always the same across each resistor. --> TRUE, for what we said above.
C) the same current always runs through each resistor. --> FALSE, for what we said in part A.
D) the power generated in each resistor is the same. --> FALSE. The power dissipated in each resistor is
where V is the voltage and R the resistance; the voltage is the same for all resistors, however the resistance is not, so the power dissipated is not the same.