A 15,000 kg satellite is orbiting at 800 km above the Earth’s surface. What is the potential energy of the satellite?
Answer:
[tex]-8.34\times 10^{11}\ \text{J}[/tex]
Explanation:
m = Mass of satellite = 15000 kg
h = Distance above Earth = 800 km
R = Radius of Earth = 6371 km
M = Mass of Earth = [tex]5.972\times 10^{24}\ \text{kg}[/tex]
G = Gravitational constant = [tex]6.674\times 10^{-11}\ \text{Nm}^2/\text{kg}^2[/tex]
Potential energy is given by
[tex]U=-\dfrac{GMm}{R+h}\\\Rightarrow U=-\dfrac{6.674\times 10^{-11}\times 5.972\times 10^{24}\times 15000}{(6371+800)\times 10^3}\\\Rightarrow U=-8.34\times 10^{11}\ \text{J}[/tex]
The potential energy of the satellite is [tex]-8.34\times 10^{11}\ \text{J}[/tex].
What is the main function of motor oil? *
a. Improve the sealing of piston rings
b. Clean the engine from sludge and varnish
c. Reduce friction and wear on moving parts
d. Neutralize acids
Answer:
its d
Explanation:
Answer:
i think its C but im not sure
Explanation:
Negative Sentences Put the verbs into the correct tense (simple past or present perfect simple). 1. I (see / not) ________________ anyone yet. 2. Phil (go / not) ________________ to the cinema last night. 3. We (be / not) ________________ to the zoo so far. 4. She (arrive / not) ________________yet. 5. Emily (visit / not) ________________ me last week.
Answer:
1. I have not seen anyone yet.
2. Phil did not go to the cinema last night.
3. We have not been to the zoo so far.
4. She has not arrived yet.
5. Emily did not visit me last week.
Explanation:
The correct use of verbs depends on the structure or form of the sentence. In other words, depending on the use of certain words, a verb in a sentence can be in the present tense, past tense, or the future tense, depending on the other words in the sentence.
The given sentences and their correct tenses, be it in the simple past or the present perfect simple are given as follows-
1. I have not seen anyone yet.
2. Phil did not go to the cinema last night.
3. We have not been to the zoo so far.
4. She has not arrived yet.
5. Emily did not visit me last week.
In the above sentences, sentence 2 and 5 are in the simple past tense while sentences 1, 3, and 4 are in the present perfect simple form (yet, so far).
The interactions amongst humans and their movements around the world is an example of:
Natural environment
Human made environment
Of the core elements of successful safety and health programs, which ones directly relate to individuals' roles?
Select the 3 answer options that apply.
Hazard identification and assessment
Management Leadership
Worker Participation
Education and Training
Program evaluation and improvement
Communication and coordination
Answer:
education and training communications coordination hazard identification and assessment
Explanation:
as a condition of any employees
you are responsible for your safety and others
Select the three subjects studied by a sound engineer technician.
score composition
soundtrack design
audio engineering
composition theory
music technology
music history
music literature
music theory
Answer:
soundtracks audio engineering compositions theory
2. What is the maximum pressure that can be used when popping beads? OA. 25 psi OB. 35 psi LOC. 45 psi OD. 55 psi
The maximum pressure that can be applied during popping beads is 35 psi LOC.
What makes a tire incapable of repair?The tire cannot be repaired if the shoulder or sidewall have holes or other damage. The tire must be scrapped if the injuries are near enough together that the repairs would overlap or if they are straight across from one another.
How much tire pressure should I use?Your tires have a tire pressure marking on the sidewall, but this is not the recommended tire pressure; rather, it is the maximum. The maximum pounds per square inch pressure, for instance, that your tire can withstand in order to hold the weight of its maximum load-bearing capability is indicated.
To know more about pressure visit:-
https://brainly.com/question/17045078
#SPJ1
In approximately 200 words, explain what three factors you believe will have the greatest impact on the future of the green building market in the next five years, and why.
Answer:
peppdpdpdpdpdpdpdpppdpdp
the role of civil and structural engineer is to produce buildings for
A. domestic use only
B. the banking sectors
C. industrial use
D. public use
What is an aerospace engineer?
which one is it
1.the branch of engineering dealing with the environment
2.the branch of engineering dealing with flight of aircraft and spacecraft
3.the branch of engineering dealing with under the ground
4.the branch of engineering dealing with under water
Answer:
B. The branch of engineering dealing with flight of aircraft and spacecraft
Explanation:
aerospace mean spaceship so aerospace engineering is a branch of engineering dealing with flight of aircraft and spacecraft
In which region of the Western Hemisphere would the Encomienda system have been practiced?
Answer: primarily in Central America and South America
Explanation:
The Encomienda system was a labor system used by the Spanish colonizers in the Americas, primarily in Central America and South America. The system was implemented in the territories that were conquered by the Spanish in the 16th century, after the arrival of Christopher Columbus. The encomienda system was a way of exploiting the indigenous population by granting a Spanish colonizer the right to demand labor or tribute from a specific indigenous community, in exchange for supposed protection and religious instruction. It was widely used in the Spanish colonies in present-day Mexico, Central America, and South America. The Encomienda system was abolished in the late 18th century, but it had a significant impact on the indigenous population, leading to their exploitation, enslavement and forced labor.
Imagine how artificial intelligence branches such as robotics, expert systems, computer vision, reasoning, and machine learning can come together to create agents which are potentially dangerous or may be used for unethical purposes. Brainstorm what alterations, limitations, or regulations are necessary or helpful for preventing such agents from being developed or reaching their destructive potential.
There are several potential alterations, limitations, or regulations that could be put in place to prevent the development of dangerous or unethical AI agents
How to prevent this?Some possible measures include:
Establishing ethical guidelines for the development and use of AI, such as the Asilomar AI Principles or the IEEE Global Initiative on Ethics of Autonomous and Intelligent Systems.
Implementing transparency and explainability measures, such as providing clear explanations for the decision-making processes of AI systems, to make it easier to detect and address any biases or unethical behavior.
Implementing safety measures, such as adding kill switches or other forms of emergency shut-off mechanisms, to prevent AI systems from causing harm in the event of a malfunction or other problem.
Regulating the development and use of AI, such as through laws and regulations that govern the use of autonomous weapons or other potentially dangerous AI applications.
Encourage international collaboration and cooperation on AI governance, to ensure a common understanding and approach to the ethical and safety concerns surrounding AI.
Read more about artificial intelligence here:
https://brainly.com/question/25523571
#SPJ1
Determine how much concrete you will need for a slab which is 50 feet by 30 feet wide and 1 foot thick
Follow the steps below to determine how much concrete you will need:
Step 1: Determine the area of the rectangle
= Length x Width
square feet
Answer:
Amount of concrete need to make slab = 1,500 feet³
Explanation:
Given:
Length of slab = 50 feet
Width of slab = 30 feet
Height of slab = 1 feet
Find:
Amount of concrete need to make slab
Computation;
Amount of concrete need to make slab = Volume of cuboid
Volume of cuboid = (l)(b)(h)
Amount of concrete need to make slab = (50)(30)(1)
Amount of concrete need to make slab = 1,500 feet³
A satellite has a total energy of –4.4 x 10^11 The satellite is orbiting 650 km above Earth’s surface. What is the mass of the satellite? (Choose the closest answer)
A 84096.5 kg
B 74096.5 kg
C 64096.5 kg
D 54096.5 kg
E 14096.5 kg
Answer:
Option E
Explanation:
As we know
[tex]m = \frac{-2RU}{GM} \\[/tex]
Where R is the radius of the orbit
G is the gravitational Constant =[tex]6.67*10^{-11}[/tex]
U is the total energy and
M is the mass of Earth [tex]= 5.98*10^{24}[/tex]
radius of earth [tex]= 6.378*10^6[/tex]
Radius of the orbit = radius of the earth [tex]+ 650[/tex] km
Radius of the orbit (R) = [tex](6.378*10^6)+(6.5*10^5)[/tex]
Substituting the given values, we get -
[tex]m = \frac{ (2((6.378*10^6)+(6.5*10^5))(-4.4*10^{11}))}{((6.67*10^{-11})(5.98*10^{24}))}\\ = 15505.6[/tex]
Option E is the nearest answer
What are the different types of guards?
Select all that apply.
Fixed
Interlocked
Adjustable
Self-adjusting
Answer:
all above
Explanation:
several guards are made up for different types of guarding situations
The different types of machine guards include all the options listed: Fixed guard, Interlocked guard, Adjustable guard, and Self-adjusting guard.
What are machine guards?Machine guards are designs that come with machines in order to protect operators to come in contact with hazardous parts of the machine.
These machine guards are coverings that prevent employees from coming into close touch with moving parts and other potentially harmful regions of a machine.
The common types of machine guards we have are:
Fixed guard Interlocked guardAdjustable guard, and Self-adjusting guard.In a factory, employees should acquire adequate training before working with any machinery to avoid possibly fatal damage. Also, they must never use machinery unless they have had previous instruction.
Learn more about machine guards here:
https://brainly.com/question/2942186
#SPJ2
Given 3 unique ints. Return true if the ints are equally apart. Basically, check to see if the distance between any 2 ints is equal to the distance between any other 2 ints.
Here's one way you could write a function in Python to solve this problem:
def are_ints_equally_apart(a, b, c):
ints = [a, b, c]
ints.sort()
return ints[1] - ints[0] == ints[2] - ints[1]
This function first puts the three integers in a list, sorts them in ascending order, and then checks to see if the difference between the middle integer and the first integer is equal to the difference between the last integer and the middle integer. If it is, then the integers are equally apart and the function returns True. If not, the function returns False.
Here's an example of how you could use the function:
print(are_ints_equally_apart(4, 2, 6)) # True
print(are_ints_equally_apart(4, 3, 6)) # False
What forces are not present in space
Answer:
C.) Weight and distance I believe
Explanation:
Economics
No links! I will report them
Story in picture
Options for answers
A)transportation
B)hotel
C)food
D)sighseeing
Answer:
D) sightseeing
Explanation:
Opportunity cost also known as the alternative forgone, can be defined as the value, profit or benefits given up by an individual or organization in order to choose or acquire something deemed significant at the time.
Simply stated, it is the cost of not enjoying the benefits, profits or value associated with the alternative forgone or best alternative choice available.
For instance, if you decide to invest resources such as money in a food business (restaurant), your opportunity cost would be the profits you could have earned if you had invested the same amount of resources in a salon business or any other business as the case may be.
In this scenario, the opportunity cost for Mikael is sightseeing to the popular Oura Preta during his stay in Brazil.
Thus, the alternative forgone by Mikael is a visit to the popular Oura Preta i.e sightseeing while retaining or maintaining other expenses such as food, hotel reservation, and transportation.
What are the four types of physical hazards?
Select the 4 answer options that apply.
Extreme Temperature
Radiation
Vibration
Noise
Pathogens
Corrosive substances
Answer:Physical hazards include ergonomic hazards, radiation, heat and cold stress, vibration hazards, and noise hazards. Engineering controls are often used to mitigate physical hazards.
Explanation:
What challenges do you still have to produce a set of working drawings
Answer:
well
Explanation:
you have to title your work and make sure it's dated as well
The construction of your home depends on working drawings. These are a collection of blueprints that contain all the structural specifications and information needed to obtain a construction permit and build your house.
What is Working drawings?When creating a set of working drawings, we make an effort to demonstrate the "Minimum Optimal" set of plans. Several architectural firms offer 30 pages of drawings when truly only 10 are necessary.
You'll save money and confusion by limiting this to the absolute necessities.
Your working drawings should feature everything you require to construct the home and nothing you do not.
Therefore, The construction of your home depends on working drawings. These are a collection of blueprints that contain all the structural specifications and information needed to obtain a construction permit and build your house.
To learn more about Drawings, refer to the link:
https://brainly.com/question/23033135
#SPJ2
_(what)_ cutting is a hand cutting technique that requires holding a torch at a slight
angle and keeping the torch in contact with the workpiece as a cut is made.
od to as
Drag cutting is the practice of cutting metal by dragging the plasma cutter's torch tip along the workpiece. The primary advantages of drag cutting are Because you don't need to keep a certain distance between the cutting tip.
What is a plasma cutter for drag cutting?Metal is shaped with drag tips during the plasma cutting process known as drag cutting. This technique offers greater control than others like stand-off cuts and is typically used for thin metals like sheets. Additionally, the procedure produces a burr- and irregularity-free edge that is smooth.
Which two types of plasma cutters are there?Conventional and Precision plasma systems make up the majority of plasma cutting systems. Typical shop air is used as the plasma gas in conventional plasma systems, and the torch's nozzle determines the form of the arc.
to know more about the hand-cutting technique here:
brainly.com/question/2018866
#SPJ1
1:cultural practices of the ilocanos of la union?
2:Success story of an entrepreneur
3:the way of life of the mangyans, their folkways and mores
4:fears and anxieties of teenagers
5: Agriculture of the pre-historic period
Answer:
assalam o aalaikum
I finished my homework this morning. __________________,
Which of the following differentiates a police officer from a detective?
O A police officer collects evidence of crimes.
O A police officer arrests suspects
O A police officer testifies in court cases.
O A police officer patrols assigned areas.
Answer:
A. Identifying, pursuing, and arresting suspects and perpetrators of criminal acts.
B. Recording facts to prepare reports that document incidents and activities.
E. Reviewing facts of incidents to determine if criminal act or statute violations were involved.
Explanation:
A, B, E
A. B. E
ASE-Type Questions
1. Technician A says that when used on its edge, a
sanding stick can be used to block sand a high
crown. Technician B says that a soft pad conforms
to any contour. Who is right?
(A) A only.
(B) B only.
(C) Both A and B.
(D) Neither A nor B.
8
G
At what distance from the Earth’s surface is a 10,000 kg satellite if its potential energy is equal to –5.58 x 1011 J? (choose the closest answer)
A 958 km
B 858.km
C 758 km
D 658 km
Answer:
Option D
Explanation:
As we know
Gravitational Constant (G) [tex]= 6.67*10^{11}[/tex]
Mass of Earth (M) [tex]= 5.98*10^{24}[/tex]
Weight of satellite (m) [tex]= 10,000[/tex] Kg
Radius of Earth (R) = [tex]6.378*10^6[/tex]
Distance of satellite from Earth = [tex]\frac{GMm}{R} - U[/tex]
Substituting the given values, we get
[tex]D=\frac{(-((6.67*10^{11})(5.98*10^{24})(10000))}{(6.378*10^6)} - (-5.58*10^{11})\\\\0.625*10^{3}[/tex]Km
or 635 m
The correct answer is option D
In which region of the Western Hemisphere would the Encomienda system have been practiced?
Read and answer the questions....
Answer: 667n+78jbn
Explanation:
Which of the following is a safety device that keeps a slotted nut from turning or coming off?
A.Lock tab
B.snap ring
C.cotter pin
D.threaded pitch
Answer:
cotter pin so C
Explanation:
Determine the maximum thickness of an aluminium sheet in which a 50 mm diameter hole is to be punched, if the compressive stress in the punch is not to exceed 80 MPa.
Answer:
Area of punch = π * (diameter/2)^2
= π * (50/2)^2
= π * 25^2
= 1962.5 mm^2
The maximum compressive stress that the punch can withstand is 80 MPa. The thickness of the aluminium sheet can then be calculated using the following equation:
Stress = Force / Area
= (Force/Area) * (Thickness/Thickness)
= (80 MPa) * (Thickness/1962.5 mm^2)
Solving for thickness, we get:
Thickness = (80 MPa * 1962.5 mm^2) / 1
= 15700 mm
= 15.7 meters
Therefore, the maximum thickness of the aluminium sheet in which a 50 mm diameter hole can be punched without exceeding a compressive stress of 80 MPa is approximately 15.7 meters.
PLEASE HELP!! I WILL GIVE BRAINLIST
Your challenge is to develop a new wristwatch that fits the average 11-19-year old person, looks good, and is easy to understand. The number one goal of this product is to help young adults with visual impairment feel more independent.
Watch Description:
The watch is similar to an Apple Watch. You can touch the top of the watch and it will either read out the time, or make vibrations (one for every hour then a pause, then one for every minute) depending on what you prefer in the settings. To change the settings, you can click a button that will be on the right side of the watch. For young adults who have the ability to see but are mildly impaired, the time will be displayed on the screen of the watch. The wristband on the watch is adjustable, so anyone can wear this watch. The watch can connect to your phone through the Bluetooth settings and when connected, will have similar abilities to those of Siri on iOS devices. You can ask questions such as time, date, plans you have made, etc., you can also send texts with the watch as well as call emergency services.