Physics College

If you could help me please.
1) Does a 1 kg object weight 9.8 newtons on the moon? why?
2) How much does a 3-kg object weigh (on earth) in newtons?
3) How much does a 20-kg object weigh (on earth) in newton?
4) What must happen for the mass of an object to change?
5) What are 2 ways the weight of an object can change?

Answers

Answer 1

1) Does a 1 kg object weight 9.8 newtons on the moon? why?

No. 1kg of mass does not weigh 9.8N on the moon.

Weight = (mass) x (gravity).

Gravity is 9.8 m/s² on Earth, but gravity is only 1.62 m/s² on the moon.

2) How much does a 3-kg object weigh (on earth) in newtons?

Weight = (mass) x (gravity)

Gravity = 9.8 m/s² on Earth.

Weight = (3 kg) x (9.8 m/s² )

Weight = 29.4 N

3) How much does a 20-kg object weigh (on earth) in newton?

Weight = (mass) x (gravity)

Gravity = 9.8 m/s² on Earth.

Weight = (20 kg) x (9.8 m/s² )

Weight = 196 N

4) What must happen for the mass of an object to change?

When an object moves, its mass increases.  The faster it moves, the greater its mass gets.  But this is all part of Einstein's "Relativity".  The object has to move at a significant fraction of the speed of light before any change can be noticed or measured.  So as far as we are concerned, in everyday life, the mass of an object doesn't change, no matter where it is, or what you do to it.

5) What are 2 ways the weight of an object can change?

First, remember that the mass of an object doesn't change, no matter where it is, what you do to it, or what else is around it.

But its weight can change, because its weight depends on the strength of gravity in the place where the object is, and that gravity is the result of what else is around it in the neighborhood.  So the weight can change even though the mass doesn't.

The weight of an object changes if you take it to a place where gravity is stronger or weaker.

Let's say we have an object whose mass is 90.72 kilograms.  Like me !    

As long as I stay on earth, where gravity is 9.8 m/s² , I weigh 889 Newtons  (200 pounds).

. . . Fly me to the moon. Gravity = 1.62 m/s²  Weight = 147 Newtons (33 lbs)

. . . Drag me to Jupiter.  Gravity = 24.8 m/s²  Weight = 2,249 N (506 pounds)

My mass never changed, but my weight sure did.

Related Questions

A cylindrical body has 6 m height and its radius is 2 metre calculate its volume. Ans :75.428m3​

Answers

Answer:

75.4

Explanation:

r= 2

h= 6

v= 22/7 *r*r*h

v= 75.42

A light year is the amount of time it takes for light from the Sun to reach the Earth.
True
False

Answers

true! a light year is the amount of time it takes for light from the sun to reach Earth!

A ball on a string in uniform circular motion has a velocity of 8 meters per second, a mass of 2 kilograms, and the radius of the circle is 0.5 meters. What is the centripetal force keeping the ball in the circle?

Answers

Answer:

256 N

Explanation:

formula of centripetal force = mv²/r

m= 2kg

v= 8m/s

r= 0.5m

mv²/r = 2×8²/0.5 = 256N

Is there a way to see moon and the sun at once?

Answers

Yes there is a way to see the moon and sun at once when the sun is setting and the moon is rising

A girl weighing 45kg is standing on the floor, exerting a downward force of 200N on the floor. The force exerted on her by the floor is ..............

Select one:

a.
No force exerted


b.
Less than 2000N


c.
Equal to 200 N


d.
Greater than 200 N​

Answers

Answer:

c.

Equal to 200 N..........

why food cook faster with salt water than cook with pure water​

Answers

Answer:

oil heats faster

Explanation:

When salt is added, it makes it harder for the water molecules to escape from the pot and enter the gas phase, which happens when water boils

a cohesive force between the liquids molecules is responsible for the fluids is called​

Answers

Answer:

static force

Explanation:

mark me brainliest

Other Questions
answer its the spanish adjectives PLEASE HELP1. the youth (m):2. grey haired:3. redhead:4. old:5. short (height): Someone please help me answer these 20 questions. Thanks write a letter to your friend tell him or her that you want to come and spend some time with him or her. What was the period called on the western front where neither theGermans or the French were fighting for 8 months? *Phoney WarTrench WarfareSitzkreigEra of Good Feeling Labor arbitration: a. Is promulgated by the employer to resolve statutory claims. b. Gives the employer the dominant power. c. Allows the employer to unilaterally design the procedures and determines that disputes related to employment subjects will be resolved in arbitration. d. Provided for final resolution of disputes interrupting work that contributed to the war effort. e. The decision of the arbitrator involves interpretation and application of company-developed personnel policy or a public law. What is the main purpose of this article? a. To tell how many people die from malaria a year c. To call for a cure for malaria b. To tell where malaria is mostly found d. To inform people about the disease malaria the sum of the age of a boy and his sister is 32 years. The boy is 6 years older than his sister. How old is his sister? please help !! What is the area of the trapezoid shown below?45 The complementary strand of DNA to the DNA fragment GGC ATA CAT is: (DNA replication) CCG UAU GUAGTA TAT CCGATG TAT GCCCCG TAT GTAwhich one ^ Help quickly pleaaas Will mark brainlest Thanks 10. What was the US foreign policy towards the Soviet Union and its allies?containmentaggressionpacifismacceptance PLS HELP ME! I WILL GIVE BRAINLIEST! Select the boxes to identify denominations in sects of Christianity today How did the US claim Florida? Why did They Give over Florida to the US? Is (4,3) a solution to the following system?X-y=42x+y=5(1 Point)Yesr No(Worth 10 points) Who are the lawmakers at the federal level? which statement best summarizes the cheerokes efforts to fight the indina removal act. Which phrase from Barrio Boy contains a simile?explore the remarkable inventions of the Americanswait there until another pass and money could be obtaineddisappearing down the drain with a deep, sonorous garglethe wooden lid with a large hole that looked like a horse collar As the crowd rises up and insists that it will commit mutiny and bring the assassins to justice, Antony finishes his speech with one final rhetorical flourish. He reads the citizens Caesar's will. Why does the will serve as an effective conclusion to Antony's speech? * 3 points A.Caesar's will states that all of his possessions are to be given to Brutus. B.Caesar's will leaves money and a public park to all Romans. C.Caesar's will grants all of his property and wealth to his widow, Calpurnia. D.Caesar's will declares that Antony should be named king immediately.