Calculate to the accuracy of 10%
Suppose you measure the terminal voltage of a 0.2-Volt alkaline...
Calculate to the accuracy of 10%
Suppose you measure the terminal voltage of a 0.2-Volt alkaline
cell having an internal resistance of 0.3 Ω by placing a 8.6-kΩ
voltmeter across its terminals. Find the terminal voltage U.
A 10-volt voltage source is connected in a series
arrangement with two resistors (R1 = 7 ohms, R2 = 3 ohms). The
current flowing in each resistor is:
a) 1.8 amperes b) 45
amperes c) 0.05 amperes d) 1
ampere e) 3.5 amperes
What is the voltage across R2 in the above circuit?
a) 2 volts b) 10
volts c) 3 volts d) 0.25
volts e) 5 volts
3. If R1 and R2 are now
connected in parallel, what...
The Gaia satellite will measure parallaxes with an accuracy of 2
× 10−5 arcsec for stars with V < 15.
(a) What is the distance d of an M5 I supergiant with
log(L/Lʘ) = 5.50 and BC = −3.70 that has V = 12, if the
effect of interstellar extinction is ignored?
(b) What is the relative distance accuracy σ(d)/d of such a
star?
(c) Assuming that Teff is known, what is the relative
accuracy in radius σ(R)/R?
Hi-Volt Components You are the IT manager at
Hi-Voltage Components, a medium-sized firm that makes specialized
circuit boards. Hi-Voltage's largest customer: Green Industries,
recently installed a computerized purchasing system. If Hi-Voltage
connects to the purchasing system, Green Industries will be able to
submit purchase orders electronically. Although Hi-Voltage has a
computerized accounting system, that system is not capable of
handling EDI.
Tasks
1. What options does Hi-Voltage have for developing a
system to connect with Green Industries Purchasing system?
2....
1.You measure the velocity of an electron to an accuracy of
±22.6 m/s. What is the minimum uncertainty in its position? (h =
6.626 × 10-34 J ∙ s, melectron = 9.11 × 10-31 kg)
A 32.2 μm
B4.03 μm
C5.12 µm
D 8.05 μm
E16.1 μm
2.A 10-g bouncy ball is confined in a 8.3-cm-long box. What is
its minimum energy? (h = 6.626 × 10-34 J ∙ s)
A.8.1 × 10-65 J
B.9.4 × 10-75 J
C.3.2 ×...
Calculate the conjugate base to acid ratio in Solution D (10 mL
of 0.2 M acetic acid and 1 mL of 0.1 M sodium hydroxide, and 9 mL
distilled water). Then calculate the theoretical pH.
Initial pH: 3.47
Molarity of HCl:
0.0992 about 0.3 mL
added
pH after HCl addition: 3.09
Molarity of added NaOH:
0.0997M about 0.2
mL
added
pH after NaOH addition: 3.54
Suppose that you are designing a parachute so that the terminal
velocity using the parachute will be the same as the velocity at
the end of a normal (frictionless) jump from a height of 2.80 m. If
the parachute exerts a drag force of - b v where v is in meters per
second and if the parachute is designed for an 70.0 kg person, what
is b?
Suppose you toss a fair coin 10 times.
(a) Calculate the probability of getting at least 6 heads, using
the exact distribution.
(b) Now repeat the calculate above, but approximate the
probability using a normal random variable. Do your calculation
both with and without the histogram correction. Which one is closer
to the true answer?
Now suppose you toss a fair coin 1000 times.
(c) What is the probability of getting at least 520 heads? You
can approximate this using...
I have a Li-ion cell I need to measure the cell voltage which is
unknown. you need to measure the voltage of the battery. You can
design the circuit which measures voltage. I need a circuit diagram
with explanation. don't say use voltmeter instead you can draw an
internal diagram of how it is working.....