AB is a potentiometer wire of resistance 1 Ω being used to measure a small voltage of 2/3 mV. The cell has an emf of 2 V and negligible internal resistance. For the balance point to be 2/3 (two thirds) of the way along the slidewire, as shown, the value of R in ohms must be:
In: Physics
A parallel-plate capacitor has an area of 5.00 cm2, and the plates are separated by 2.00 mm with air between them. The capacitor stores a charge of 500 pC.
(a) What is the potential difference across the plates of the capacitor?
1 V
(b) What is the magnitude of the uniform electric field in the region between the plates?
In: Physics
How are MNCs subject to political risk? Stated differently, in what areas in a country are MNCs exposed when it comes to political risk?
SELECT APPROPRIATE ANSWERS:
I. Group of answer choices
II. Macro Risk
III. Micro Risk
IV. Indeterminate Risk
V. Time-invariant Risk
In: Finance
1.25-g of BaCl2 is placed in a 4.000 L volumetric flask. Then the volumetric flask is filled with D.I. water to the 4.000 L mark. All the BaCl2 goes into the solution. Assume the density of the solution is 1.00 g/mL.
What is the mass/mass (m/m) % and the mass/volume (m/v) of the solution?
In: Chemistry
Which of the following is the correct condensed electron configuration for the atom or ion indicated?
a) The electron configuration of Cu is [Ar]4s23d9.
b) The electron configuration of Si4+ is [Ar].
c) The electron configuration of Cl+ is [Ar].
d) The electron configuration of In3+ is [Kr]4d10.
e) The electron configuration of V is [Ar]4s24d3.
In: Chemistry
Use the ideal gas law to complete the table:
| P | V | n | T |
| 1.06 atm | 1.25 L | 0.105 mol | ___ |
| 115 torr | ___ | 0.249 mol | 309 K |
| ___ | 28.2 mL | 1.81×10−3 mol | 26.0 ∘C |
| 0.565 atm | 0.440 L | ___ | 257 K |
In: Chemistry
A rifle of mass M is initially at rest. A bullet of mass m is fired from the rifle with a velocity v relative to the ground. Which one of the following expressions gives the velocity of the rifle relative to the ground after the bullet is fired?
A) −mv
B) mv
C) Mv/m
D) mv/M
In: Physics
An ideal transformer has 50 turns in its primary and 250 turns in its secondary. 12 V ac is connected to the primary. Find:
a. The voltage ac available at the secondary.
b. Current in the 10 ohms device connected to the secondary.
c. Power supplied to the primary.
d. Power supplied to the secondary.
In: Physics
A highway has a flat section with a tight curve of radius 40 m. The curve is level with respect to the ground. If the coefficient of static friction between tires and pavement surface is 0.45, what is the maximum speed v at which a car of inertia m can negotiate the curve safely —that is without the tires slipping?
In: Physics
Write the four Maxwell’s Equations, together with the defining relationship for the fields (F~ = q(E~ + ~v × B~ ), and give a short summary of the experimental basis for each and define all symbols. Then describe Maxwell’s modification of Ampere’s Law and outline (without mathematical details) how it shows that light is an electromagnetic wave.
In: Physics