Charge q1= +0.225 nC is at the origin. Charge q2 = -0.913 nC is at y= +2.44 cm. What is the magnitude and direction of the acceleration felt by an electron at x = +4.15 cm?

Please answer the following question correctly :

3. Answer the following, assume we are looking down at the solenoid:
a. If the North Pole enters the solenoid first, the field lines point (.......) the
solenoid.
i. The solenoid will (Choose an item). the magnet and induce a field that points
(Choose an item). the solenoid.

b. If the South Pole enters the solenoid first, the field lines point (Choose an item). the
solenoid.
i. The solenoid will (Choose an item). the magnet and induce a field that points
(Choose an item). the solenoid.

c. If the North Pole leave the solenoid first, the field lines point (Choose an item). the
solenoid.
i. The solenoid will (Choose an item). the magnet and induce a field that points
Choose an item. the solenoid.
d. If the South Pole leaves the solenoid first, the field lines point (Choose an item). the
solenoid.
i. The solenoid will (Choose an item). the magnet and induce a field that points
(Choose an item). the solenoid.

e. The solenoid will always (Choose an item). the magnet at the top of the solenoid and
(Choose an item). the magnet after it has passed through.

4. Why is the graph not symmetric, i.e. why is the first peak wider and shorter than the
second? Look at the graph axes.
5. Why is there a section of the graph between the 2 peaks with no induced emf? What does
this physically correspond too?
6. Why are the graphs inverses of each other, that is to say, why does one graph start with
negative voltage while the other begins positive?

Examples of 1st law thermodynamics in our daily lives

PLEASE ANSWER THIS QUESTION WITH THESE VALUES NOT ONE YOU ANSWERED WITH DIFFERENT VALUES!!! THANKS

A radio broadcast antenna is 36.00 km from your house. Suppose an airplane is flying 2.200km above the line connecting the broadcast antenna and your radio, and that waves reflected from the airplane travel 85.00 wavelengths farther than waves that travel directly from the antenna to your house.

Do you observe constructive or destructive interference between the direct and reflected waves? (Hint: Does a phase change occur when the waves are reflected?)

The situation just described occurs when the plane is above a point on the ground that is two-thirds of the way from the antenna to your house. What is the wavelength of the radio waves? answer should be in m

A solenoidal coil with 28 turns of wire is wound tightly around another coil with 320 turns. The inner solenoid is 21.0cm long and has a diameter of 2.20cm . At a certain time, the current in the inner solenoid is 0.150Aand is increasing at a rate of 1600A/s

Part A
For this time, calculate the average magnetic flux through each turn of the inner solenoid.

Part B

For this time, calculate the mutual inductance of the two solenoids;

Part C

For this time, calculate the emf induced in the outer solenoid by the changing current in the inner solenoid.

A crate is given an initial speed of 2.6 m/s up the 29.0 ∘ plane shown in (Figure 1). Assume μk = 0.12.

Part A: A spherical wave with a wavelength of 4.0 m is emitted from the origin. At one instant of time, the phase at r = 8.0 m is πrad. At that instant, what is the phase at r = 7.5 m ? Express your answer to two significant figures and include the appropriate units.

Part B: What is the phase at r = 9.5 m at the same instant? Express your answer to two significant figures and include the appropriate units.

2. The sound intensity 54.0 m from a wailing tornado siren is 0.140 W/m2 .

Part A: What is the intensity at 1150 mm ? Express your answer with the appropriate units.

Part B: The weakest intensity likely to be heard over background noise is ≈1μW/m2. Estimate the maximum distance at which the siren can be heard.

Express your answer with the appropriate units.

I was wondering where I can get a more or less complete set of a galaxy to test an n-body simulation (preferably two colliding galaxies with approx 300k to 1M elements).

Is it possible to extract this data from a public source like Nasa? Or does it make more sense to just generate the data?

Note: I Found the SDSS Skyserver website, but I don't think it's possible process this data to get useful initial conditions and a more or less complete galaxy.

Consider two vectors F1 with magnitude 44 N inclined at 61 o and F2 with magnitude 98 N inclined at 139 o , measured from the positive x axis with counterclockwise positive.

Find the direction of this resultant vector (between the limits of 0 and −180◦ from the positive x-axis). Answer in units of o . Your answer must be within ± 5.0%

Kirchhoff’s Junction Rule is a consequence of the law of Conservation of Electric Charge. Explain why.

a block of mass m=0.10 kg attached to a spring whose spring constant is k=2.5 N/m . At t=0.2s, the displacement x=-0.3m, and the velocity v=-2.0m/s

a) find the equation of displacement as a function of time

b) sketch the displacement as a function of time for the first cycle starting t=0s

A diverging lens has a focal length of -30.0cm. Located the images for object distances of (a) 60.0cm (b) 30.0cm (c) 15.0cm. What kind of images are they (real or virtual; upright or inverted)? (d) Draw a ray diagram for part (a).

1- What is the maximum voltage that can be applied across a 2.3-kΩkΩ resistor rated at 1414 watt?

Express your answer to two significant figures and include the appropriate units.

2- A certain copper wire has a resistance of 19.0 ΩΩ . At some point along its length the wire was cut so that the resistance of one piece is 7.0 times the resistance of the other.

Determine the length of the short piece.Express your answer using two significant figures.----------- %%of the length of the wire.

3-

Calculate the ratio of the resistance of 11.0 mm of aluminum wire 2.3 mmmm in diameter, to 23.0 mm of copper wire 1.6 mmmm in diameter. The resistivity of copper is 1.68×10−8Ω⋅m1.68×10−8Ω⋅m and the resistivity of aluminum is 2.65×10−8Ω⋅m2.65×10−8Ω⋅m.

Express your answer using two significant figures.

Two stationary positive point charges, charge 1 of magnitude 3.10 nC and charge 2 of magnitude 1.80 nC , are separated by a distance of 42.0 cm . An electron is released from rest at the point midway between the two charges, and it moves along the line connecting the two charges. What is the speed vfinal of the electron when it is 10.0 cm from charge 1?

A box of mass sits on the floor of an elevator. The area of the bottom surface of the box is 0.250 m2. When the elevator is moving upward at a constant speed of 2.00 m/s the pressure the box exerts on the floor is 981 pascal. (Note: One Pascal equals one Newton per square meter; 1 Pa = 1 N/m2). Calculate the pressure the box exerts on the floor while the elevator a. slows uniformly from an upward speed of 2.00 m/s to zero in 3.00 seconds. b. accelerates uniformly from rest to a downward speed of 2.00 m/s in 3.00 seconds. c. slows uniformly from a downward speed of 2.00 m/s to zero in 3.00 seconds. d. is moving downward at a constant speed of 2.00 m/s e. accelerates uniformly from rest to an upward speed of 2.00 m/s in 3.00 seconds f. is at rest.