HELP ASAP
this is for science, and if i get the questions right, I pass, but the teacher never taught us the lesson, idrk y. so i really need help:( Im giving away 20 points so please give me your best answers ;)


1. As an astronaut travels from the surface of Earth to a position that is four times as far away from the center of Earth, based on the Law of Gravity which of the following statement is true?


a. mass remains the same and the gravitational pull from Earth decreases

b. weight remains the same and the gravitational pull from Earth changes

c. weight increases and the gravitational pull from Earth stays the same

d. mass decreases and the gravitational pull from Earth increases

2. A satellite is sent into orbit around the Earth, In which of the following situation would the gravitational force be the greatest?


A. 1200 lb satellite orbiting 150 miles above Earth’s surface

b. 850 lb satellite orbiting 150 miles above Earth’s surface

c. 850 lb satellite orbiting 1500 miles above Earth’s surface

d. 1200 lb satellite orbiting 1500 miles above Earth’s surface


3. High and low tides are the regular pattern of rising and sinking ocean-water levels. They are caused when the sun’s gravity and the moon’s gravity pull on ocean water. The moon’s gravity has a greater effect on Earth’s oceans than the sun’s gravity. Why would the moon have a greater effect than the sun?


a. The moon has less mass than the sun.

b. The moon is closer to Earth than the sun.

c. The moon is not as hot as the sun.

d. The moon has less mass than Earth.



4. Which statement about the universality of gravity is false?


a. The gravitational force between two objects depends only on their masses.

b. Any two objects that have mass also have a force of gravity acting between them, no matter how far apart they are.

c. The gravitational force between two objects increases if the objects move closer together.

d. The gravitational force between two objects increases if mass is added to one object.

Answers

Answer 1

Answer:

1)a- mass never changes as you move from the earth

2)actually am not sure I haven't been taught that too

3)b

4)a-it doesn't depend only on mass but also weight


Related Questions

What is the volume of this rectangular prism?
1/4cm 1/3cm 1/2cm​

Answers

Answer:

1/24

Explanation:

1/4 * 1/3 * 1/2 = 1/24

Answer:

1/24

Explanation:


When light rays appear to be coming from behind a mirror, what type of image has been formed?
A.imaginary
B.real
C.plane
D.virtual

Answers

Answer:

The answer ...........may be D.

The pressure of water at the bottom of a well is _________ than at the surface of the pond.

Answers

Answer:

Greater

Explanation:

When you go deeper in water, the presure increases, the deeper you go, so it would be greater in a well then the surfce of a pond. Hope this helps!

Sound is a type of mechanical wave and must have a medium through which to travel. Sound will move at different speeds when which of the following occurs?
A. The sound is fully absorbed in an object.

B. The sound moves from air to water.

C. The sound pitch increases.

D. The sound is reflected off a surface.

Answers

Hey there!

The answer would be B. The sound moves from air to water.

Sound travels through different mediums. It goes fastest in solids, a little slower in liquids, and slowest in air. Sound is a very fast wave, but remember that mediums can differ that. In a vacuum space, there is no sound at all. (ex. outer space)

Hope this helps !

Balance chemical reactions: please help question attached

Answers

2 AsI —> 2 As + 3 I

hope this helps!

what is mass times acceleration?

Answers

Answer:

Force

Explanation:

The mass of an object is the quantity of matter it contains. It is measured in kilograms.

Acceleration is the ratio of the change in the velocity of an object to the change in time. It is measured in m/[tex]s^{2}[/tex].

When the mass of an object is multiplied with its acceleration, this gives the average force applied on the object. As force is defined as agent that can change the state of an object.

i.e     F = m × a

where F is the force, m is the mass of the object and a its acceleration.

The two major classes of force are; contact force and field force.

why is it dangerous to connect a battery to itself. what is the term used to describe that

Answers

In the circuit outside of the battery the electrons have to expend all of their energy on the internal resistance of the battery which causes heating

A pendulum reaches a height of 0.3 m at the top of its swing. If the
bob has a mass of 5 kg, what is the potential energy at the top of its
swing?
Select one:
14.7)
7.35 J
0.45 J
1.5 J

Answers

Answer: A

Potential energy = 14.7 J

Explanation:

Given that the

Mass M = 5 kg

Height h = 0.3 m

Let us take acceleration due to gravity g = 9.81 m/s^2

Potential energy = mgh

Substitute all the parameters into the formula above

P.E = 5 × 9.81 × 0.3

P.E = 14.715 J

P.E = 14.7 J approximately

The correct option is therefore A

Which is true about density?
A. A possible unit for density is grams.
B. Liquid gold is denser than solid gold.
C. Density is found by multiplying mass
and volume.
D. Density is independent of the
amount of the sample.

Answers

Answer:

Density is independent of the

amount of the sample. (D)

Explanation:

Because density is an intrinsic property of matter.

hope it helps!

Answer:

D. Density is independent of the

amount of the sample.

Explanation:

Density is expressed in units of mass per volume, such as g/mL or kg/m3. Because the density of a substance does not depend on the amount of substance present, density is an “intensive property”. To measure the density of a sample of material, both the mass and volume of the sample must be determined.

Hope this Helps, Pls mark as the Brainliest

What is the advantage of the SI unit over CGS units?
Help me ...
answer it as fast as you can...​

Answers

Answer:

The advantage of the SI unit over CGS unit are:

S.I has broader base. It has seven base units and two supplementary units.S.I is metric.S.I is coherent.S.I is rational, i.e. it gives one unit for one physical quantity .e g. for energy of any type i.e, mechanical or heat or electrical.There is only one unit Joule(J) but in M.K.S system unit for mechanical energy is joule.

HOPE IT WILL HELP YOU

Units of measurements

The advantage that SI unit has over CGI is that it has only one unit for each measurement

Explanation:

CGS: Also known as Gaussian units

Length is measure in cm (centimeter)

Mass is measured in g (gram)

Time is measured in s (second).

SI unit: The International System of Units

Length is measure in meter (m)

Mass is measured in kilogram (kg)

Time is measured in seconds (s)

In summary with the SI unit student do not need to store any conversion factors in memory

An electric motor converts electrical energy into energy.

Answers

Answer:

into mechanical energy

...........,.

Mechanical energy it’ll turn into mechanical

How does planting high yield crop varieties make farming more sustainable

Answers

Answer:

The more high yield crops are planted, the more production there will be from plants.

Explanation:

High-yield plants are plants that are genetically modified or modified artificially in a way that makes farming plants more efficient. More crops grow, therefore more money.

The answer is, the more high-yield plants there are, the more efficiency there will be from farming.

Answer:

Its D

Explanation:

my options were these

A. It increases the amount of water needed

B. It keeps soil fertility from diminishing over time

C. It keeps chemicals form entering the watershed

D. It decreases the amount of land needed

The diagram shows the field lines near the poles, X and Y, of two magnets.

At left a rectangular box with the long horizontal side labeled X. At right a rectangular box with the long horizontal side labeled Y. There is a gap between the boxes. Curved lines with arrowheads emerge from the right end of X and the left end of Y and point up and down.
Based on the field lines, what are the poles of the magnets?

X: north
Y: south

X: south
Y: north

X: north
Y: north

X: south
Y: south

Answers

Answer:  I think it is C

Explanation: sorry if it wrong

Answer:

C

Explanation:

got it right on edge

What does ROCAPV mean?

Answers

Answer:  Rancho de Area Comunes PV

Explanation: it means

Rancho de Area Comunes PV

In an AC Monte Roca PV System Profile, where the following are depicted:

Location

Commissioning

Production

Operator

PV system power

Module

And communication.

What is the focal length of a lens if an object placed 3.28 cm from the lens produces an image that is 4.11 cm in front of the lens?

Answers

Answer:

1.82 cm

Explanation:

The relationship between the object distance (p), image distance (q) and focal length (f) is given by [tex]\frac{1}{p}+\frac{1}{q}=\frac{1}{f}[/tex]

According to question,

Object distance (p) = 3.28 cm

Image distance (q) = 4.11 cm

Therefore,

[tex]\frac{1}{3.28}+\frac{1}{4.11}=\frac{1}{f}\\\frac{3.28+4.11}{3.28\times 4.11}=\frac{1}{f}\\f=\frac{3.28\times 4.11}{3.28+4.11}\\=\frac{13.48}{7.39}\\=1.82\,\,cm[/tex]

After nuclear explosions animals and humans can continue to die due to ingestion of radioactive particles and nuclear ______________.

fallout

rainout

whiteout

Answers

The answer is fallout pls give brainliest if this helped

3. Which of the following is an example of a
supplemental restraint system?
(a) air bag
(c) lap and shoulder belt
(b) safety belt
(d) antilock brakes

Answers

Answer:

A) air bag is your answer

Answer:

air bag

Explanation:

Any of several restraining systems in a vehicle, such as an airbag, in addition to the seatbelts.

Match each type ol energy with its description
chemical
electrical
sound
nuclear
mechanical
A type of potential energy stored inside atoms
Boccurs when a vibrating object's kinetic energy moves through matter in waves
C possessed by substances that do work through chemical reactions
D kinetle energy of charged particles called electrons
energy of moving objects

Answers

Answer:

B

Explanation: yes

F.
Using this formula m = =, If a car is pushed with a net force
of 5000N, resulting in an acceleration of 3.5m/s2, what is the
mass of the car?
a 1438.5kg
b 1428.6kg
c 1328.6kg
d 1421.6kg

Answers

Answer:

C

What is the answer please help her

What is the kinetic energy of a bicylcle with a mass of 15 kg traveling at a velocity of 3 m/s?​

Answers

KE = 0.5 x mv^2

Kinetic energy equals 1/2 times mass times velocity squared.

Mass = 15kg

Velocity = 3m/s

Plug it into the formula.

KE = 0.5 x 15(3^2)

KE = 0.5 x 15(9)

Multiply the mass and velocity squared.

KE = 0.5 x 135

Then, multiply the result by 1/2 or 0.5

KE = 67.5

The kinetic energy of a bicycle that has a mass of 15kg and travels at 3m/s is 67.5J.

Answer:

67.5 J

Explanation:

Kinetic energy can be found using the following formula.

[tex]KE=\frac{1}{2}mv^2[/tex]

where m is the mass in kilograms and v is the velocity in m/s.

We know the bike has a mass of 15 kilograms. We also know the velocity is 3 m/s. Therefore, we can substitute 15 for m and 3 for v

[tex]KE=\frac{1}{2}*15*3^2[/tex]

Evaluate the exponent first. 3^2 is the same as 3*3, which is equal to 9.

[tex]KE=\frac{1}{2} *15*9[/tex]

Multiply 15 and 9.

[tex]KE=\frac{1}{2} *135[/tex]

Multiply 1/2 and 135

[tex]KE=67.5[/tex]

Add appropriate units. Kinetic energy uses Joules or J as the units.

[tex]KE= 67.5 Joules[/tex]

The kinetic energy of the bike is 67.5 Joules

the two ways you could increase acceleration

Answers

Answer: mass(how much the object weighs) and force(how hard you push the object)

Explanation:

What of the following does NOT influence resistance? *
A.thickness of wire
B.temperature
C.material of wire
D.Number of components

Answers

Answer:

D. Number of components

Explanation:

Answer:

D. Number of components

Explanation: hope this helps :)

Traveling in circle requires a net force

Answers

Answer:

Circular motion requires a net inward or "centripetal" force. Without a net centripetal force, an object cannot travel in circular motion. In fact, if the forces are balanced, then an object in motion continues in motion in a straight line at constant speed.

Explanation:

What is used in the name of ionic compounds containing a cation with multiple charges to indicate which charge?
(No answers to display)

Answers

Answer:

Roman Numerals?

Explanation:

Iron(II), would be iron 2+

iron(III), would be iron 3+

for example.

A charged particle is placed in a space. The particle experiences a force. What can be concluded?

A.
The space contains a magnetic field.
B.
The space contains an electric field.
C.
The space has a charge opposite to the particle's.
D.
Oppositely charged particles must be present.

Answers

Answer: A.

The space contains a magnetic field

Explanation:

A charged particle is surrounded by electric field and exerts force on other charges in the field, attracting or repelling them. 

But a charged particles in a magnetic field can escape into infinity without ever stopping due to magnetic force. We can therefore conclude that the space contains a magnetic field

Answer:

Explanation:

B

In a circult, a battery is used to

1. slow down current
2. conduct current
3. raise the potential of electrons
4. convert electrical energy into some other form of energy

Answers

Answer:

4. convert electrical energy into some other form of energy

I might be wrong, but I think that it’s 4. Convert electrical energy into some other form of energy.

does space have plenty of oxygen ​

Answers

Answer:

I don't think so because we can't breathe in space

Explanation:

Answer:

No

Explanation:

There is no oxygen in space, so astronauts must bring tanks of oxygen

An airplane moves in straight level flight at constant velocity. What is the
net force acting on it if the mass of the plane is 1000 kg and the frictional
drag of the air is 1800 N? *

Answers

Answer:

Net force = 0

Explanation:

We have, an airplane moves in straight level flight at constant velocity.

Mass of the plane is 1000 kg

The frictional force acting of the air is 1800 N.  

It is required to find the net force acting on it. We know that net force is given by the product of mass and acceleration. But here the airplane moves with constant speed, it means its acceleration is equal to 0 such that net force is equal to 0.

   

1. What are three things you think of when you think of energy?

Answers

Answer:

Food, wind, water.

Explanation:

This is supposed to be a personalized question so I answered with things that can make/give energy.

Answer:

This is personal question, very interesting! Depend on who is the person, where the person is working at, how old is that person - we can have various answers.

Personally, I think first about that human and other animals needs energy to survive, that means we need to eat, to drink; The plants need energy to survive too - that is the energy from the Sun.

Secondly, the human being needs such types of energy as electricity, wind, solar energy, etc. in oder to live. Even the acient people learnt to use solar and wind and water - natural energy from the nature.

Thirdly, the human being needs spiritual energy to have a good life.

Another specific terms of energy related to physics and chemistry, and even biology - actually are not in my mind in everyday life.

Explanation:

pls what is a friendly relationship

Answers

Answer:

A relationship where both members are freindly and supportive towards each other.

Explanation:

Brainliest?

Answer:

i do not know is your are talking about boyfriend and girlfriend relationship of you are talking about friendship i am just going to say both so for a friendship they do not have to like the same thing but if they do that is cool they have to be nice to each other and understand what one of them wants to do and they have to get along if they want to have a goof friendship so for boyfriend and girlfriend it is okay for them to fight and not understand each other they have to be friends so they can no what they like to do with each other then they can go on dates together

Explanation:

hope i help sorry very long

Other Questions
what is the Economic Find the height of a rectangular prism if the surface are is 288 square centimetres and the base has a length of 4 centimetres and a width of 9 centimetres. (x) A change in position is called:(a) Speed(b) velocity(c) displacement(d) distance PLEASE HELP ASAP A group of 8th and 9th graders were surveyed about whether they use social media to communicate with their friends. The results are shown below in the conditional relative frequency table by row. A 4-column table with 3 rows. The first column has no label with entries 8th grade, 9th grade, total. The second column is labeled do not use with entries 0.06, 0.19, 0.38. The third column is labeled use with entries 0.84, 0.81, 0.62. The fourth column is labeled total with entries 1.00, 1.00, 1.00. Which conclusions can be drawn from the results of the survey? Check all that apply. There is no association between using social media and grade level. The probability a student uses social media, given that he or she is in 9th grade, is 81%. A student who is more likely to not use social media is in 8th grade. An 8th grader is more likely to use social media than not. Knowing a students grade level does not help determine if he or she uses social media. In order to control pollution, you should reduce the need for _____________ goods and transportation. What was the major new media technology that became popular followingWWII?RadioTelevisionCell PhonesInternet what was leonardo da vinci scientific passion Max wants to purchase a wall hanging. He is choosing between one shaped like a trapezoid and one shaped like a kite. He will choose the wall hanging with the greater area. Which wall hanging will Max choose? (1 point) The volume of the solid obtained by rotating the region enclosed by x=2y,y3=x(with y0) about the y-axis can be computed using the method of disks or washers via an integral V=ba ? with limits of integration a= and b= . The volume is V= cubic units. Note: You can earn full credit if the last question is correct and all other questions are either blank or correct. what are the dimensions of the rectangle How would you factor 6a - 15 What was the result of the 1st, 2nd, 3rd, and 4th crusade? 13)In human males, the urethra is used for transport ofA)egg cells only.B)sperm cells only.C)egg cells and urine.D)sperm cells and urine. The United States enormous production capacity had what effect on the war in Europe? Which of the following was NOT a reason for the United States going to war with Britain?The United States wanted to establish colonies in EnglandThe British were capturing American shipsThe Americans wanted Native American landThe British were still holding forts west of the Appalachian Mountains How did A. Philip Randolph get President Truman to change the way themilitary treated its black soldiers?O A. He threatened to organize a march on Washington.O B. He organized a soldiers' unionO C. He refused to join the army.D. He joined the Communist Party. Below is the data of ages at the local amusement park on a certain day.17, 18, 17, 17, 20, 22, 17, 18, 13, 14, 19, 14, 13, 33, 31, 8, 9, 10, 8, 8, 16, 17, 19, 35, 29, 8, 10, 15, 17, 30, 29, 5, 9, 10, 15, 14Provide the intervals and frequencies you would use to construct the histogram for this data set. Plz help What does | mean in mathematical term Thanks The measure of an angle is 75. What is the measure of its supplementary angle? I NEED HELP PLZ I FORGOT HOW TO DO THIS PLZ EXPLAIN HOW U GOT UR ANSWER HELPP