Lien is pushing a box across a table. She used a force of 100 N to get the box moving. Which force did she overcome to get the box moving?
a)the downward force of gravity on the box
b)the upward force of the table on the box
c)the reaction force on the box
d)the push force on the box

Answers

Answer 1
I’ll decompose each answer. My guess is answer C

A.) The force of gravity acts downward on the box, it plays no role in the horizontal acceleration assuming friction is nonexistent.

B.) The normal force acts upward on the box, it also plays no role in the horizontal acceleration.

C.) The reaction force on the box would be talking about Newton’s 3rd law. The reaction force acts on Lien and not the box. So she herself would have to overcome that reaction force to get the box moving. I believe this is the right answer

D.) The push force would be the force she applied. She wouldn’t have to overcome her own force that correlated with the box. She’d have to overcome the reaction force like I explained in answer C.
Answer 2

We have that from the options, the  force require to move the table will be the Reaction force.i.e the force that will get a reaction out of the table i.e is Motion

The reaction force on the box

Correct  Option is C

From the question we are told

Lien is pushing a box across a table. She used a force of 100 N to get the box moving

Generally The Force Requird to Move a table is greater than the contiunes force applied to it to en sure it contines in Motion.

Having said that Newtons Third law states for every action there most be an equal and opposite reaction

Therefore

From The options the  force require to move the table will be the Reaction for.that is the force that will get a reaction out of the table i.e is Motion

Correct  Option is C

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Related Questions

If a man walks 600 meters in 300 seconds, what was his speed in meters per second?​

Answers

Answer:

His speed in meters per second was 2. Or, 2 meters per second.

Explanation:

V=A shot-putter tosses an 8 kg metal ball across a field. The ball moves from rest to a velocity of 4 m/s in 0.8 seconds. Calculate the force (in Newtons) that was used to move the ball. Don't input the unit.

Answers

This one is a little tricky but ima see if I can help

Which describes one event that causes an eclipse?

Earth’s rotation on its axis
shadows from clouds covering Earth
Earth’s shadow covering the moon
the gravity from the moon and Sun pulling in the same direction

Answers

Answer:

Earths shadow covering the moon would create a lunar eclipse.

Explanation:

because i just know

A lunar eclipse is occur when Earth’s shadow is covering the moon.

What is eclipse?

An eclipse happens when one astronomical body like Earth or moon blocks light from or to another.

What is lunar eclipse?

A lunar eclipse is caused by Earth blocking sunlight from reaching the moon and causing a shadow across the lunar surface.

What is solar eclipse?

Sometimes when the Moon orbits Earth, the Moon moves between the Sun and Earth. When this happens, the Moon blocks the light of the Sun from reaching Earth. This causes an eclipse of the Sun, or a solar eclipse.

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if a car start from rest at an initial velocity and accelerate uniformly from rest at 18 m\s square what will be the actual amount if the car stops at 500.​

Answers

Answer:

initial velocity is 10.0 m/s and it accelerates at2.00 m ...

Explanation:

what stresses you think of three things and describe what makes these situations stresssful how do they make you feel

Answers

Answer:

a lot stresses me out honestly like school work because we are virtual and it's hard cause you basically teaching yourself, secondly me maintaining to be happy i always put everybody's happiness before mine and it's just a lot for me, and lastly the thing that stresses me the most is me overthinking i ALWAYS overthink situations.

Explanation:

:/

A cd player has a current of 0.1 a flowing through it. if the source voltage is 4v, what is the resistance? R=V/I

Answers

Given parameters:

Current of CD player  = 0.1A

Source Voltage = 4V

Unknown:

Resistance  = ?

Solution:

Based on Ohm's law;

           V  = I R;

  V = voltage

   I = current

   R = resistance

Input the parameters and solve;

          4 = 0.1 x R

              R  = [tex]\frac{4}{0.1}[/tex]   = 40ohms

The resistance of the CD player is 40ohms

HELP
What’s the input and output force of a stapler
:)

Answers

Answer:

The input force is the force that when you push down and the output force is the stable going into the paper.

Explanation:

I really hope this helps ;)

Answer: yes

Explanation:

because so

If a sled is being pulling on the ground toward the right with a force of 100 N and friction is acting on it to the left with a force of 85 N, what is the net force
of the sled?
O 15 N to the left
15 N to the right
185 N to the right
185 N to the left

Answers

Answer:

15 N to the right.

Explanation:

100 N to the right -->

85 N to the left <--

So therefore in order to find the net force of where the sled is being dragged towards is 100 N - 85 N = 15 N.

So the sled is moving towards the right of 15 N.

PLZ HELP DUE IN 10MIN!!!!!!!!!The temperature of the water vapor (H2O) inside a pressure cooker increased from 295 K to 395 K. As
the sample is heated, the pressure of the water vapor went from 21.0 kPa to _____.

Answers

Answer:

p2=28.12KPa

Explanation:

Given data:

Initial temperature = 295 K

Final temperature= 395 K

Initial pressure = 21.0 KPa

Final pressure = ?

Solution:

According to Gay-Lussac Law,

The pressure of given amount of a gas is directly proportional to its temperature at constant volume and number of moles.

Mathematical relationship:

P₁/T₁ = P₂/T₂

Now we will put the values in formula:

21.0 KPa / 295 K = P₂/395 K

P₂ = 21.0 KPa× 395 K / 295 K

P₂ = 8295 KPa. K /295 K

P₂ = 28.12 KPa

"A car is travelling at 70 m/s. The driver sees a cow in the road and slows down with a constant acceleration for 10 seconds before coming to a stop. What is the car’s displacement by the time is stops." what information do you know?

Answers

The question does not ask for anything in particular. I will calculate the acceleration and distance.

Answer:

The acceleration of the car is [tex]-7\ m/s^2[/tex]

The distance traveled before stopping is 350 m

Explanation:

Constant Acceleration Motion

It's a type of motion in which the velocity of an object changes by an equal amount in every equal period of time.

Being a the constant acceleration, vo the initial speed, vf the final speed, and t the time, the following relation applies:

[tex]v_f=v_o+at\qquad [1][/tex]

The distance traveled by the object is given by:

[tex]\displaystyle x=v_o.t+\frac{a.t^2}{2}\qquad [2][/tex]

The car has an initial speed of v0=70 m/s when the driver sees a cow in the road and steps on the brakes with an (assumed) constant acceleration during t=10 seconds before stopping (vf=0).

With the information provided, we can calculate the value of the acceleration and the distance traveled.

Using the equation [1] we can solve for a:

[tex]\displaystyle a=\frac{v_f-v_o}{t}[/tex]

Substituting the numerical values:

[tex]\displaystyle a=\frac{0-70}{10}=-7\ m/s^2[/tex]

The acceleration of the car is [tex]-7\ m/s^2[/tex]

The distance is now calculated by using [2]

[tex]\displaystyle x=70\cdot 10+\frac{(-7)\cdot 10^2}{2}[/tex]

[tex]\displaystyle x=700-\frac{700}{2}=350\ m[/tex]

The distance traveled before stopping is 350 m

which model would be classified as a physical model

Answers

Answer:

Model will be classified as a physical model since it is demonstrating a model in real life.

Explanation:

Answer:

Marshmallow answer

Explanation:

Which best describes friction? A. a downward pull when objects fall through the air B. a constant force that acts on objects that rub together C. a downward pull on objects that roll on bumpy surfaces D. a constant force that pulls two objects toward each other
PLSSS I NEED HELP 20 POINTS!!!

Answers

Answer:

i believe its B

Explanation:

im taking physics and thats the only thing that makes sense to me haha

hope this is right and helps <3

Answer:

It's B: a constant force that acts on objects that rub together

Explanation:

all help is very much appreciated !

Answers

Answer:

Direct is the correct answer

can somebody helppp me pls thank you:)))))​

Answers

The picture is very blurry I wish I could help

HEY HEY HEY HEY

Explanation:

HEY HEY HEY HEY HEY

What does it mean to say that mass is conserved during a physical change? ​

Answers

This law states that, despite chemical reactions or physical transformations, mass is conserved — that is, it cannot be created or destroyed — within an isolated system. In other words, in a chemical reaction, the mass of the products will always be equal to the mass of the reactants.

Answer:

100% oon test

Explanation:This law states that, despite chemical reactions or physical transformations, mass is conserved — that is, it cannot be created or destroyed — within an isolated system. In other words, in a chemical reaction, the mass of the products will always be equal to the mass of the reactants.

Identify all the forms of energy in the picture below
identify thermal energy, mechanical energy, radiant energy, electrical energy, sound energy, and chemical energy​

Answers

Answer:

we are going to focus on just a few. • Heat energy ( Thermal). • Mechanical energy. • Light (Radiant) energy. • Electrical energy. • Sound energy. • Chemical energy

Which sample of water has the most thermal energy?
O A. A 0.5 kg sample at 1°C
O B. A 1.5 kg sample at 10°C
O C. A 1 kg sample at 10°C
O D. A1 kg sample at 4°C

Answers

Answer:b

Explanation:

A box has pushed across the floor for 5.2 M with a 48 N force how much work is done?

Answers

Work is force x displacement
So force is 48 and displacement is 5.2 as given

Therefore 48 x 5.2
Which is 249.6
Approximately 250 J (joules)

What is avarage speed? (AS)
speed?​

Answers

Answer:

average speed = total distance/total time

It is the total distance

Why red has the weakest energy?

Answers

Answer:

because plants or living things cant reflect with a red light

Explanation:

Answer:

Explanation:

Red has the longest wavelength so it has the lowest energy of any color.

Currently, the world population is about:
A. 7 billion
B. 450 million
C. 1.2 trillion
D. 700 million

Answers

A. 7 billion, I looked it up on Google and it said 7.8 billion
The answer is A 7 billion

A ball is dropped off the roof of a tall building. If the ball reaches the ground in 8 seconds, how tall is the building, in meters? Round to the nearest whole number (a=9.8 m/s2)

Answers

Let b be the height of the building, and y the height of the ball at time t, given by

y = b - 1/2 gt²

where g = 9.8 m/s² is the magnitude of the acceleration due to gravity.

It takes the ball 8 s to reach the ground, at which point y = 0, so that

0 = b - 1/2 (9.8 m/s²) (8 s)²

b = 1/2 (9.8 m/s²) (8 s)²

b = 313.6 m

If your mass is 63.7 kg, and you are standing 7.5 m away from a boulder with
a mass of 9,750.6 kg, what is the gravitational force between you and the
boulder? Newton's law of gravitation is F gravity
Gm; m2. The gravitational
constant G is 6.67 x 10-11 Nm2/kg?

Answers

7.36 × 10⁻⁷ Newton is the gravitational force between you and the boulder.

What is Gravity ?

Gravity or gravitational force of the earth is defined as the force on which a planet attracts or pulls another planet towards the center. It is represented by symbol g.

What is Force ?

Force is defined as the physical quantity and the vector quantity which acts on an object and causes the object to change its size and shape to stop moving and start moving to decelerate and accelerate. Force has both the directions as well as magnitude. The SI unit of force Newton which is also represented as N, named the scientist Sir Issac Newton.

What is Newton's Law of universal gravitational ?

The Newton's Law of universal gravitational is defined as the universal force of attraction acting between the two bodies which is inversely proportional to the square of the distance between them and the directly proportional to the product of their masses.

It is represented as

[tex]F = \frac{G m_1 m_2}{r^2}[/tex]

Where,

F represents the gravitation force between the two bodies

G represents the gravitation constant

m₁ represents the first body mass

m₂ represents the second body mass

r represents the distance between the two bodies.

Here,

G = 6.67 x 10-¹¹ Nm²/kg

m₁ = 63.7 kg

m₂ = 9,750.6 kg

r = 7.5 m

Now by putting in the above formula we get the gravitational force between you and the boulder.

[tex]F = \frac{6.67 \times 10^{-11}\ Nm^2/kg \times 63.7\ kg \times 9,750.6\ kg}{(7.5 m)^2}[/tex]

[tex]F = \frac{4142825.1774 \times 10^{-11}\ Nm^2/kg}{56.25}[/tex]

   = 7.37 × 10⁻⁷ N

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Please help me

If a circuit has a current of 0.25 A and a voltage of 3 V, how much resistance is in the circuit? A 0.083 ohms B 0.75 ohms C 1.5 ohms D 12 ohms​

Answers

Answer:

The resistance in the circuit is 12 ohm.

(D) is correct option

Explanation:

Given that,

Current = 0.25 A

Voltage = 3 V

We need to calculate the resistance

Using ohm's law

[tex]V=IR[/tex]

[tex]R=\dfrac{V}{I}[/tex]

Where, V = voltage

I = current

R  = resistance

Put the value into the formula

[tex]R =\dfrac{3}{0.25}[/tex]

[tex]R=12\ ohm[/tex]

Hence, The resistance in the circuit is 12 ohm.

(D) is correct option

11. When gathering glassware and equipment for an experiment, you should
a. Read all directions carefully to know what equipment is necessary
b. Examine all glassware to check for chips or cracks.
C. Clean any glassware that appears dirty
d. All of the above

Answers

Answer:

C

Explanation:

Option  D is the correct answer.

What are the importance when gathering glassware and equipment for experiment?

Usually in the research labs there were some rules and we have follow those for our safety measures. Some importance rules while doing experiments were:

Flammable materials should be used in open.Always must use the experimental equipment given.While gathering we must read all directions carefully to know the necessary of the equipment.Glassware should be checked whether it's broken or not before using the equipment.All the glassware and equipment using for experiment must be clean.Should ask our lead or instructor before and after the experiment.While using a test tube we should be away from other people.We should use tongs before picking up the heating material and heated equipment.For any clarifications and doubts we should always ask and listen to the instructor.

Hence, option D is the correct answer.

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6. A child tugs on a rope attached to a 0.62-kg toy with a horizontal force
of 16.3 N. A puppy pulls the toy in the opposite direction with a force 15.8
N.What is the acceleration of the toy? (Hint: Remember direction:
towards child or puppy?)

Answers

Answer:

Explanation:

Force Mass * acceleration

F = ma

a = F/m

Sum of force = 16.3N - 15.8N = 0.5N

Mass = 0.62kg

Substitute

a = 0.5/ * 0.62

a = 0.81m/s²

The acceleration of the toy is 0.81m/s²

Why violet has the strongest energy?

Answers

Answer:

Explanation:

Because violet waves have the shortest wavelength of the visible light spectrum, they carry the most energy.

If you were to push on the wall with a force of 100N, how much force would the wall push back towards you?

Answers

Answer:

100n

Explanation:

Answer:

-100N

I hope this helps!

Does the moon control the waves in the ocean?

Answers

Answer:

no don't think so

Explanation:

JESUS CHRIST controls everything 100IQ

No, the moon does not directly control the waves in the ocean. The primary factors that influence the formation of waves in the ocean are wind and the interaction between wind and the water's surface.

The moon, however, does play a significant role in influencing the tides, which are the periodic rise and fall of the ocean's surface.

The gravitational force exerted by the moon, as well as the sun to a lesser extent, creates tidal bulges on the Earth. As the Earth rotates, these tidal bulges move around the planet, resulting in the daily cycle of high tides and low tides.

The gravitational pull of the moon is stronger on the side of the Earth facing the moon, causing a high tide, while on the opposite side, a high tide also occurs due to the centrifugal force resulting from the Earth's rotation. The areas in between experience low tides.

While tides can affect the height and intensity of ocean waves near the coastlines, the actual formation and behavior of waves are primarily driven by wind patterns, water depth, and other factors such as underwater topography.

Waves are generated when the wind transfers its energy to the water's surface, creating oscillations that propagate as waves. These waves can travel vast distances across the ocean, even in the absence of tidal influences.

In conclusion, while the moon's gravitational pull influences the tides, it does not directly control or generate the waves in the ocean.

Waves are primarily driven by wind and other factors, whereas tides are the result of gravitational forces acting on the Earth's oceans.

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What is symbiosis
A an interaction between organisms
B a type of reproduction
C and organelle in the cell
D a process by which plants make their own food

Answers

Answer:

A an interaction between organisms

Explanation:

Symbiosis is an interaction between two or more organisms. It is a biological interaction which can be mutualism, commensalism or parasitic.

Mutualism is a form of interaction between two organisms where they both derive benefit from one another. Commensalism is an interaction in which one organism derives benefit and the other is neutral. Parasitic is an interaction where an organism derives benefit from the other in which the other is harmed.

Symbiosis simply entails the interactions between organisms.

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