1. When an inductor is connected to a 60.0 Hz source it has an inductive reactance of 54.4 Ω. Determine the maximum current in the inductor (in A) if it is connected to a 46.0 Hz source that produces a 120 V rms voltage.

An inductor (L = 360 mH), a capacitor (C = 4.43 µF), and a resistor (R = 460 Ω) are connected in series. A 50.0-Hz AC source produces a peak current of 250 mA in the circuit.

(a) Calculate the required peak voltage ΔV_max.

(b) Determine the phase angle by which the current leads or lags the applied voltage.

3. An AC voltage of the form Δv = 100 sin 1 000t, where Δv is in volts and t is in seconds, is applied to a series RLC circuit. Assume the resistance is 375 Ω, the capacitance is 4.50 µF, and the inductance is 0.500 H. Find the average power delivered to the circuit.

How is it possible for an atom to emit visible light even though the atom is smaller than the wavelength of visible light?

We all know that wavefunction collapse when it is observed. Uncertainty principle states that ?x?p??2. When wavefunction collapse, doesn't ?x become 0?, as we will know the location of the particle. Or does standard deviation just become smaller?

After collapse occurs, what happens to the particle? Does the particle resurrect into a wavefunction form?

What can be an observer that triggers wavefunction collapse? (electron wavefunction does not collapse when meeting with electrons; but some macroscopic objects seem to become observers....)

What happens to the energy of a particle/wave packet after the collapse?

Please name every day items that apply to the certain topics regarding optics:

1) Reflection on plane mirrors

2) Interference of light

3) Reflection on curved mirrors

4) Refraction of light

5) Diffraction of light

6) Diverging or converging lenses

7) Polarization of light

I need to include a photo of each concept (7 photos) that I need to take with my phone/camera. For each picture, can you please explain what topic the picture exemplifies using physics terms? Ex: "It shows polarization of light through... etc"

Thank you so much!

An electron has an initial velocity of (12.0j + 15.0k) km/s and a constant acceleration of (2.00*10^12 i) m/s^2 in a region in which uniform electric and magentic fields are present. If B=(400*10^-6 i)T, find the electric field

Gravity is the longest acting (in terms of distance) and the weakest of the four fundamental forces in the universe. If gravity is so weak, why does it affect all of our lives? Give an example of gravity working in your own life and the universe as a whole.

Three capacitors of 2.00 nF, 5.00 nF and 7.00 nF are connected in series to a source

with a potential difference of 9.00 V.

a)What is the equivalent capacitance?

b) What is the the charge in each capacitor, and what is the potential difference across

each capacitor?

c) What is the energy stored in each capacitor?

9) Repeat 8 with the same three capacitors in parallel. How is this different than the

result in series?

A child holds a helium-filled rubber balloon with a volume of 0.01 m³ in air at 0 degrees C. Neglect the weight of the rubber and string and the buoyant force of the air on the child.

(a) How great a force must she exert to keep the balloon from rising?

(b) How many such balloons would it take to lift a 20-keg child?

Some useful data: At 0 degrees C, the density of the helium is 0.178 kg/m³ and the density of air is 1.29 kg/m³.

An electron of kinetic energy 1.69 keV circles in a plane perpendicular to a uniform magnetic field. The orbit radius is 20.1 cm. Find (a) the electron's speed, (b) the magnetic field magnitude, (c) the circling frequency, and (d) the period of the motion.

please make sure you do all questions and you have the right answers.

1- A parallel-plate capacitor is connected to a battery. The space between the two plates is empty. If the separation between the capacitor plates is tripled while the capacitor remains connected to the battery, what is the ratio of the final stored energy to the initial stored energy?
.....

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2- Design a 0.4 µF parallel-plate capacitor with air between the plates that can be charged to a maximum potential difference of 1160 V.

(a) What is the minimum possible separation between the plates?
..... mm

(b) What minimum area must the plates of the capacitor have?
...... m²

Faster than a speeding bullet, more powerful than a locomotive, able to keep leap tall buildings in a single bound. The infant of Krypton is now the Man of Steel: Superman!

a) Given what you know about Superman from this description, estimate the maximum speed with which he can jump. State explicitly your assumptions and any limitations of your model, and comment on the result. If you decide to use the acceleration due to gravity, you may estimate a value of g=10 m/s^2. Note, the empire state building is approx. 450 m to the tip of the spire.

PLEASE SHOW ALL YOUR CALCULATIONS

10. You are the veterinarian at a zoo that has 21 zebras. Each zebra needs to get four
intravenous shots (over the course of a month) of a vaccination against Zebra Zombie Disease.
Each injection contains 750 mg of the active vaccination agent. How many grams of the active
vaccination agent should you order for the month?

12. A municipal transit system has 85 diesel buses that travel an average of 47,000 miles per
year each. Because of the start and stop nature of a bus route, they only get an average of 5
MPG. If diesel costs $2.75 per gallon, how much is the annual fuel bill?
13. A block of metal is 5 cm by 7 cm by 9 cm and has a mass of 854 grams. Calculate the density
of the block and give your best guess of what it is made of. Express the density in both g/cm3
and kg/m3.
14. You have a 100-watt light bulb on your front porch that is turned on 10 hours every night. If
the cost of electricity is 12 cents per KWHR (kilowatt hour), how much does that bulb add to
your monthly electric bill?
15. The parking lot of a college campus has 200 lamp posts. Each lamp post has two 1200-watt
light bulbs. The lights are on an average of 10 hours per night year-round. Calculate the annual
electric cost for the lights if the college pays 8.5 cents per KWHR.

Determine at what temperature aluminum will have the same resistivity as tungsten does at 24?C.

2. Define New Terms: Free Fall Acceleration, Air Resistance, and Terminal Velocity.

3. Offer a brief explanation for the discrepancy between the accelerations of the small and large balls for free falling.

State and explain Hook’s law regarding restoring force. How can a mass-spring system execute simple harmonic motion? Elaborate with the help of suitable figures and equation.