Question: Please solve these 2 question in details. I know the answer but don't know how to do. 1. A rocket is fired vertically upward in

Please solve these 2 question in details. I know the answer but don't know how to do.

1. A rocket is fired vertically upward in a vacuum. During the burning process, the fuel mixture is expelled at a constant rate 1431 kg/s and the exhaust gas is ejected at a constant velocity with magnitude 412 m/s. (i) What percentage of the total initial mass M the rocket has to burn in order to accelerate to the speed of 526 m/s? (Answer : 72) (ii) What is the speed of the rocket ( relative to earth) when 21% of its total initial mass M is ejected? (Answal : 97) 2. Let =- 13i - 12j + 18k and v = 3j + 2k be vectors in three space. (i) Find | | v x ull (Answer : 94 ) (ii) A unit vector in the direction of v x u is given by n = a i + bj + ck ( Answer : n = /4 7 - 47 ] + 3/7*)

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock blur-text-image

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Mathematics Questions!

Please solve question 9 in details. Thank you so much. 8. A rocket moves forward in a straight line by expelling particles of a fuel mixture backward ( that is in the opposite direction of...

There is a case question (very last question) in the document below and i would like to know how to resolve it properly University of Toronto Faculty of Arts and Science and Rotman School of...

1 Exercise 3: Lift and Airfoils The first part of this week's assignment is to choose and research a reciprocating engine powered (i.e. propeller type) aircraft. You will further use your selected...

Please solve everything in details using electric, gravitational and magnetic fields. 1. With what initial speed must an object be projected vertically upward from the surface of Earth to rise to a...

CLOSING ARGUMENTS A Closing Argument should: 1. Repeat your theory and theme of the case 2. Summarize the evidence that preceded it 3. Relate the evidence to the law and the legal issues (i.e....

Opening Statement for Defense The 1948 U.S. Presidential election was a hard fight for Harry Truman. No one thought he had a shot and the folks at the Chicago Daily Tribune didn't think so either. At...

M. Abel's leadership style reflects the typical behaviour of the French patron' - a style still found in many medium-sized French companies. It can be characterised as being highly task orientated...

One basic theory of investing is diversication. The idea is that you want to have a basket of stocks that do not all move in the same direction. In other words, if one investment goes down, you don't...

You will be writing a paper on your social justice organization. The social justice organization this paper will be on the young feminist wire - You will provide a summary of your organization and...

Attempt 2 : One or more answers is incorrect. You will be told if you get them all right. Vectors: Find the vector from the point A = ( - 2 , 3 , 5 ) to the point B = ( 3 , - 5 , - 5 ) . vec ( A B )...

The ï¬nancial information of three companies is listed in the following table with some numbers omitted. Required: For each of the three companies listed ï¬nd the missing numbers....

Lawler Manufacturing Company expects annual manufacturing overhead to be $900,000. The company also expects 60,000 direct labor hours costing $1,800,000 and machine run time of 30,000 hours. Required...

Contract Manufacturing, Inc. is considering two alternative investment proposals. The first proposal calls for a major renovation of the companys manufacturing facility. The second involves replacing...

Assume K = $40, = 30%, r = 0.08, T = 0.5, and the stock is to pay a single dividend of $2 tomorrow, with no dividends thereafter. a. Suppose S = $50. What is the price of a European call option?...

Jims Bike Shop sells and repairs bicycles. The owner, Jim Hardy, took several accounting courses in college and has decided to maintain his businesss accounting records. Although the shop has been in...

Exhibit 1. In an S&OP, the aggregate sales forecast for December is 3100 units. The beginning December inventory is 300 units. December has 31 days. Question 15 (1 point) Refer to Exhibit 1. If...

1. Discuss the following statements: a) Predetermined is not the same thing as predictable. b) When we are aware of the consequences of our behaviour, we can change our behaviour. c) What we know is...

2. In this chapter, the reader should reflect on the following concepts:

1. To provide an understanding that a person in a communication situation conveys three things at the same time: their position, basic interests and values.