You are a navigator on board the Orville, in charge of deciding
the ship's path as you explore a distant star system. Visible in
the system are an 15 solar mass blue star and a 0.5 solar mass red
star. A previous mission's log notes there is also a 4 solar mass
black hole in the system, but its coordinates weren't entered by
their navigator, so you don't know exactly where it is.
Define a reference frame with fixed to your ship (with you at the
origin), the x-axis pointing toward the blue star and the x-y plane
containing both stars. The blue star is 700 Gm away along the
x-axis, while the red star is 765 Gm away in a direction 14 degrees
below the x-axis (i.e., in the fourth quadrant).
a) Draw a picture of the situation, and find both stars'
positions in component form.
blue star = [ , ] Gm
red star = [ , ] Gm
b) Assume the system's members' orbits are all circular, moving
the same direction, and going about the center of mass of the
system. The blue star is moving directly in the +y direction, and
the red star is moving 45 degrees between +x and +y. Assuming
you're at rest relative to the center of mass, find the location of
the center of mass relative to you at the origin.
CM = [ , ] Gm
c) c) Given your results above, what is the black hole's
position, and in approximately what direction is it moving
in?
black hole = [ , ] Gm
Are you safe at your present location?
In: Physics
answer use a different color, please)
1. In shorthorn cattle the gene for red coat color is not dominant over that for white coat color.
The heterozygous condition produces a roan color. A breeder has a white, red, and roan
cows and bulls. What phenotypes can be expected from the following crosses?
A. Red x roan
B. Red x red
C.. Roan x white
D. Red x white
2. A homozygous black chicken is crossed with a homozygous splashed white chicken ( white with black splashes same as the chicken in the video) and the resulting offspring are blue Andalusian chickens. Cross two heterozygous Andalusian chickens and give the results of their offspring.
3. In snapdragons, flower color shows incomplete dominance. Homozygous plants are red or white, and heterozygous plants are pink. What type of flowers will result in the F1 ( first generation)of red and white? In the F2 ‘s (end generation)?
4. In Poultry, a form of incomplete dominance is for the trait” frizzle” F = frizzle N = no frizzle and FN = slightly frizzled. If a frizzled male is crossed with a non-frizzled female, what will be the genotypes and phenotypes for the F1 generation?
In the F2 ‘s
In: Biology
The main function creates 5 pixels with random red, green, and blue values. Complete the id_color function to return “red” if the red value is greater than the green and blue, “green” if the green value is greater than the red and blue, and “blue” if the blue value is greater than the red and green. If there is no clear maximum value (for example, if the red and green values are the same) return None. Do not change the main function.
import image
import random
def id_color(p):
'''Returns the dominant color of pixel p'''
pass
#Your code here to determine the dominant color and return a string
identifying it
#Hint: get the red, green & blue values and use an if statement
to determine which has the highest value
def main():
'''Controls the program'''
for i in range(5): #Loop 5 times
r = random.randrange(0, 256)
g = random.randrange(0, 256)
b = random.randrange(0, 256)
print(r, g, b) #Show the pixel red, green & blue values
new_pixel = image.Pixel(r, g, b)
print(id_color(new_pixel))
main() #Run the program
In: Computer Science
|
Payoff Table |
||
|
Alternatives |
State 1 |
State 2 |
|
Store size 1 |
200 |
175 |
|
Store size 2 |
150 |
185 |
|
Store size 3 |
140 |
200 |
|
Store size 4 |
50 |
300 |
|
Opportunity Loss Table |
||
|
Alternatives |
State 1 |
State 2 |
|
Store size 1 |
||
|
Store size 2 |
||
|
Store size 3 |
||
|
Store size 4 |
||
Given the information above,
Over the past 40 years, the probability of high demand is .3. Given this information,
In: Statistics and Probability
You roll one blue 6-sided die, and one red 4-sided die. Let A be the event that the outcome of the red die is twice the outcome on the blue die Let B be the event that the outcome of the blue die is greater than the outcome on the red die Let C be the event that the sum of the two dice is a prime number. a) Find P(B) and P(C) by clearly listing all outcomes in B and C. b) Are the events A and C C mutually exclusive? Clearly justify your answer. c) You throw the pair of dice until event B occurs. What is the expected number of throws it takes for B to occur for the first time? (You may use any known distribution results and any results from a-c, clearly identify distribution)
In: Statistics and Probability
Pengurusan Air Selangor Sdn Bhd (“Air Selangor”) is a state-owned water management company. It was set-up as the special purpose vehicle of the Selangor State Government, to be the single holistic licensee for the provision of water services in Selangor and the Federal Territories of Kuala Lumpur and Putrajaya, following the water services industry restructuring.
a) Is it possible for a monopolist like Air Selangor to achieve economies of scale—at all time? Why or why not?
b) One of the main issues that are always associated with the state government-protected monopolist like Air Selangor is inefficiency. Explain why this is the case (inefficiency) and how to overcome them.
c) In lieu of (b), unlike Air Selangor that is state-owned, what about technological (tech) monopolists such as Google or Netflix? Why are consumers generally okay with tech monopolists but not with government-protected monopolists?
Note: Please use sources from reputable news outlets (i.e., Forbes, The Edge, NST) to answer these questions (wherever relevant).
In: Economics
You are required to prepare a brief on a proposed
study to be undertaken by your company. The study is to establish
the challenges faced by the company with respect to low sales. Your
brief should cover the following:
Conceive a topic for the study
Identify the research problem
State three (3) research questions
State two (2) significance of the study
explain the methods of data collection and analysis to
use
In: Accounting
You are required to prepare a brief on a proposed study to be undertaken by your company. The study is to establish the challenges faced by the company with respect to low sales. Your brief should cover the following:
explain the methods of data collection and analysis to use
In: Psychology
1. In a magazine that has 98 pages of adds of the 152 pages total: a. Based on this sample result, construct a 95% confidence interval estimate of the percentage of all popular magazine pages that have advertising. (See section 7-2 of the textbook for examples of such confidence intervals). b. Give a description of what this confidence interval tells you about magazine advertising. c. What would change about your confidence interval if you changed the confidence level to 99%?
In: Statistics and Probability
Scenario: Imagine that a psychologist working with veterans with post-traumatic stress disorder wants to compare the effectiveness of several therapies focused on reducing symptoms of anxiety. The psychologist randomly sampled 20 veterans who recently returned from combat and randomly assigned each of them to receive one of four interventions for 8 weeks. A survey was used to measure the participants’ anxiety at the end of the 8 weeks. Higher anxiety scores indicate more anxiety.
Use SPSS to compare the mean anxiety scores with a one-way ANOVA.
| • Anxiety scores for 5 veterans who received behavioral therapy |
| 108 |
| 109 |
| 107 |
| 105 |
| 106 |
| • Anxiety scores for 5 veterans who received cognitive therapy |
| 105 |
| 102 |
| 104 |
| 102 |
| 106 |
| • Anxiety scores for 5 veterans who received biofeedback therapy |
| 101 |
| 102 |
| 105 |
| 100 |
| 101 |
| • Anxiety scores for 5 veterans who received medication therapy |
| 101 |
| 104 |
| 103 |
| 105 |
| 103 |
In: Math