Hi, I do not understand how to do this physics problem. Please explain the method and help me understand the concept.
Question:
The picture on a television screen is created by a beam of
electrons that sweep across the screen 550 times in 1/30 s. If the
screen is 50 cm wide, what is the speed of the beam of electrons
sweeping across the screen?
Hi, I do not understand how to do this physics problem. Please explain the method and...
Hi, I am having trouble answering the following physics question. The electron beam inside a television picture tube is 0.500mm in diameter and carries a current of 53.0 ?A. This electron beam impinges on the inside of the picture tube screen. a) How many electrons strike the screen each second? b) What is the current density in the electron beam? Express your answer with the units A/m^2. c) The electrons move with a velocity of 4.50
hi, i understand how to solve this problem but how do we get 5
electrons in the reduction part. All the oxidation number make
sense. I'm confused on where the 5 electrons came from.
o0 EXPLANATION As always, when you need to analyze a redox reaction, it's a good idea to start by identifying what's reduced and what's oxidized: +7-2 +1 2+ 2+ MnO (aq) 8H (aq) + 5 Fe (aq) Mn (aq) 4H,O)5 Fe(ag) Assigning oxidation states tells you...
Answer is C. Explain please. I do not understand how to consider tax in the problem. Tee Times, Inc. produces and sells the finest quality golf clubs in all of Clay County. The company expects the following revenues and costs in 2004 for its Elite Quality golf club sets: Revenues (400 sets sold @ $600 per set) $240,000 Variable costs 160,000 Fixed costs 50,000 What amount of sales must Tee Times, Inc. have to earn a target net income of...
Please help me I do not understand. Thank you! Kin selection was used to explain the evolution of eusociality. Now we know that in some eusocial species, including honeybees, queens mate multiple times, i.e., polyandry. In your own words, how might polyandry weaken the kin selection explanation for the evolution of eusociality?
Hi, I have two physics questions I would like to check my
answers for. Please help me confirm my answers or explain to me why
they are wrong.
[For #1, I got W = -1689J. For #2, I got that (a) was -2940J
and (b) was 2940J]
1. A car is equipped with a bumper that is designed to absorb collisions. The bumper is mounted to the car using pieces of flexible tubing. The car is traveling at 1.5 m/s...
hi i dont know and understand what this assignment wants me to do can some please explain it to me thank you Modify the print_face function to have a third parameter mouth and use it in the final print statement. def print_face(eye, face_char): print(' ', eye, ' ', eye) # Print eyes print(' ', face_char) # Print nose print(' ', face_char*5) # Print mouth return print_face('o', 'x')
Would you please help with method to solve this problem. Do
not understand the reference to r2.
30. Write the Equation and r for the scatterplot: Equation:
hi, please help in c++.
I dont understand how to do this, and a lot of the ways on the
internet is confusing me, i am a beginner.
with all steps and explantions, will rate!
Write a program that determines the frequency of each char in an input file. Your program should . read in an unknown number of chars from an input file named input.txt, • using a function written by you, determine the frequency of occurrence of each...
Please solve step by step! I do not understand the simplex
method and how to pivot around the table can you please explain?
Thank you!
Use the simplex method to solve the problem. Minimize P = 2x1 - 5x2 subject to X1 + X2 54 +3x22 2 15 X1.x220 5x7 + The minimum value of Z is at x = and x2 = (Simplify your answers.)
Hi, please help me with this problem, please explain me step by
step and write with very good calligraphy. Thank you very much.
Consider casting sand mold of the piece shown in the figure. The
dimensions are in centimeters.
(i) The molten metal overflows the pouring cup of the mold and
flows down the sprue (downsprue) at a constant rate of 2000
cm3/s. The cross section of the sprue is circular, with
a diameter of 6 cm at the top....