Physics Middle School

A physics student weighing 500 N stands on a scale in an elevator and records the scale reading over time.

The data is
shown in the graph above. At time t= 0, the elevator is at rest on the ground floor.

What is the acceleration of the student
from 10-15 s?

A Physics Student Weighing 500 N Stands On A Scale In An Elevator And Records The Scale Reading Over

Answers

Answer 1

Answer:

25s

Explanation:

Answer 2

Answer: 0 m/s^2

Explanation:

The other person is very wrong…

Related Questions

Ken wants to jump and have some fun too! Barbie loans Ken her bungee cord. Is this a good idea? Explain with evidence and reasoning. (barbie bungee jump lab)

Answers

Answer:To ensure a safe and thrilling jump you will determine the relationship between the jump height and the

number of rubber bands used to make the bungee cord. You must allow your Barbie doll to come as

close to the floor as possible without sustaining any injuries or fatalities.

Explanation:

Based on the pattern of the P and S waves, what type of material is this planet made of?

(Tried to pick a subject but I could not find Science.)

Answers

Answer:

solid 6.

Explanation:

Observe the path taken by P and S waves in the model planet.

Place these waves in order from shortest wavelength to longest.
light waves, ocean waves and, sound waves

Answers

Answer:

Ocean waves, sound waves, and light waves.

Explanation:

The waves that are felt shortest to the longest in terms of the wavelengths are  :

Ocean waves, sound waves, and light waves.What is a wave?

A wave is a motion of the ocean or seawater by the movement of the winds. The waves are wind-generated and occur in free surface and large bodies of water. The wave's contact distance is called fetch.

The waves have lengths that are called wavelength. The shortest wavelength is that of oceanic waves and longest is that of light waves.

Find out more information about the waves

brainly.com/question/6069116

Can someone please help me on thisss

Answers

answer 2 i did this before

Please help! And no absurd answers please, I asked this a bit ago and I got super odd answers aha

Answers

Answer:

the second one

Explanation:

The second one is the answer

A student is modeling electric forces and potential energy in a system with two opposite charges. For his model, he uses a rubber band with a marble attached to either end. When the rubber band is stretched, does the model predict what will happen to the force and potential energy in the system? Explain.

Answers

Answer:

the potential energy will increase

Explanation:

The model will predict an increase in both the potential energy and increase in force ( i.e. work done )

The increase in work done in a model of electric forces and potential energy is directly proportional to the increase in the potential energy as the stretched rubber band changes its position after it is stretched.

The model described in the question typically represent a transfer of energy from point A to point B in a system by doing work in a system ( i.e. stretching of the rubber band ).

Hence we can conclude that The model will predict an increase in both the potential energy and increase in force ( i.e. work done ).

Learn more : https://brainly.com/question/16979726

Identify at least one example each of absorption, transmission, reflection, and refraction of waves in this photograph.

Answers

Answer:

the answer above me is wrong, there is no rainbow.

Explanation:

"ABSORPTION WAVES: Water absorbs almost all the infrared energy from sunlight, so a possible answer for absorption is light absorption through water which will later on heat up the water.

TRANSMISSION WAVES: pool water waves passing a shallow area continue with their energy mostly unchanged.

REFLECTION WAVES: the surface of the water reflects light.

REFRACTION WAVES: waves will bend away from normal if the waves move from a denser medium to a less dense medium which applies to Snell’s law."  - anonymous

GIVING AWAY 38 POINTS

Explain the three properties of sound.

Answers

Properties of sound include speed, loudness, and pitch. The speed of sound varies in different media. The loudness of sound depends on the intensity of sound waves. The pitch of sound depends on the frequency of sound waves.

What happens when warm air rises? (5 points) (will give brain)

a
Global temperature decreases.

b
The movement creates a difference in air pressure.

c
Cool air rises with it.

d
It moves towards the poles.

Answers

Answer:

b)

movement creates a difference in air pressure.

as warm air rises up it creates a vaccum so due to that the pressure in that region decreases.

Answer:

B. The movement creates a difference in air pressure.

Explanation:

View the photo below, read the passage, and answer the question.



The arcs in the photo are background galaxies that were distorted and magnified by a giant cluster of dark matter. As the light leaves its source, the gravity of the cluster of dark matter bends that light, creating the swoops in the image above.

This passage best supports which conclusion about dark matter?

a. Dark matter does not give off light, but scientists can see the reflection in stars around it
b. Dark matter is created from clouds of dust and gas scattered throughout the universe
c. Dark matter has a significant impact on the stellar life cycle
d. Dark matter does not give off light, so it can only be detected by observing the effects of gravity on visible objects nearby

Answers

The answer is a i hope this helps you have a great time

Which of the following choices represent the correct directional arrow needed for the boxes?

Answers

Answer:

B

Explanation:

Gravity always pulls down.

Which refers to the amount of heat required to change the temperature of 1 gram of a substance by 1°C and is related to the chemical composition of the substance?

Thermal energy
Specific heat
Activation heat
Boiling point

30 points

Answers

a. thermal energy
hope this helps
Yeah it’s thermal energy

Fill in the blank.
You don’t ____ me thass fine _ ___

-Man Tiffany

Answers

Answer:

like, k bye

Hope this helps!

Answer:

You dont like me thass fine ok bye

Which statements describe density? Check all that apply.
A. Density is a chemical property of an object.
B. The density of an object is constant.
C. Density is a derived unit of measure.
D. Density is the sum of the mass and volume of an object.
E. The density of an object determines whether it will sink or float.​

Answers

Answer:

D) Density is the sum of the mass and volume of an object

Which of these statements about heating up water on Earth's surface is true?

Water heats up faster than land.
Water heats up by convection from Earth.
Water heats up by conduction from the sun.
Water heats up to a lower temperature than land.
Plsss help

Answers

Answer:

Water heats up to a lower temperature than land.

Explanation:

Land is a good conductor of heat due to its molecular composition. It is very easy for it to heat up and cool down than the water. This means that it requires a lesser amount of energy.

It takes time for the water to heat up than the land, which means it has a higher heat capacity. This is called "specific heat." Once heated, it takes time to cool down, which means some of the heat is still there while the land is already cool at night time. Overall, this is the reason why water heats up to a lower temperature than land.

Answer: D

Explanation: Hope this helps :)

If a machine decreases the distance an object moves, it must also _____.
increase the object's acceleration
decrease the force used to move the object
decrease the object's mass
increase the force used to move the object

Answers

Answer:

B. Decrease the force used to move the object.

Explanation:

The answer is b.......

ple help. 30 pts, do NOT steal points or get REPORTED ):


choice options.

===

Slider 1

0

1

3

4

===

Slider 2

9

10

13

16

Answers

Explanation:

sorry I'm late

I'm answering cause I felt bad abt the fact that noone answered u. Have a great morning or night!

Which scientific law describes the relationship between action and reaction force pairs?

Newton's third law of motion
Kepler's law of planetary motion
Law of gravitation
Law of conservation of mass

Answers

Answer: Newton’s third law of motion

Explanation:

15 points! Middle School Physical Science.

Answers

Answer:

1st t=d/s

2nd s=d/t

5th d=st

are all of the variations I came up with

Explanation:

the original formula for speed is s=d/t

then, I created a ratio of s/1=d/t and cross multiplied to find d=st

then, I isolated the t in one side by dividing by s on both sides.

Answer:

S = d/t

Explanation:

The formula for speed is speed = distance ÷ time. To work out what the units are for speed, you need to know the units for distance and time.

A car moves at 45 kilometers per hour.

Which option describes if the given value is speed or velocity?

1 velocity, because there is no specific direction
2 speed, because there is no specific direction
3 velocity, because there is a mention of time
4 speed, because there is a mention of time

Answers

Answer:

4

Explanation:

4. speed, because there is a mention of time

Speed v/s Velocity:Speed is the time rate at which an object is moving along a path, while velocity is the rate and direction of an object's movement. Velocity is speed with a direction. For example: The Dog runs at 9 km/h (kilometers per hour) is a speed. But saying he runs 9 km/h Westwards is a velocity.

Thus, the correct option is 4 since no direction is given so it cannot be velocity.

Learn more:

brainly.com/question/4931057

PLEASE help me on this, it'll be greatly appreciated!!
In one paragraph, using your own words, describe the location of ALL subatomic particles in a sulfur atom. For full credit, describe the location and amount of protons, neutrons, and electrons, including consideration of energy levels and valence electrons.

Answers

Answer:

Explanation:

Wait so we are supposed to write about this?

plz help describe the motion of tongs

Answers

Answer:

Movements of the tongue

The primary movement of the tongue is up and down with flattening and spreading. Lateral tongue movements are not observed during this pattern. Tongue movements are accompanied by up and down movement of the jaw for chewing and biting. This is a normal tongue pattern observed in early chewing.

Explanation:

Answer:

The primary movement of the tongue is up and down with flattening and spreading.

Explanation:

sorry to the person i copied

Please help, I don’t know the answer, and I’m not good at science

Answers

I think it’s b mass as it’s a property of the cart
i think the answer for that question is B which is mass, i’m not sure. sorry it i’m wrong.

Mintu wants to increase the heat transfer between a metal iron and another piece of metal he wants to shape. He decides to increase the time the two metals are in contact, use a larger metal iron, and use a new metal material with a higher specific heat.

Where is Mintu's error?

Mintu should have decreased the size of the metal iron.
Mintu should have decreased the time he touches the two metals.
Mintu should have chosen a material with a lower specific heat.
Mintu should have chosen a material the same temperature as the iron.

20 points

Answers

Answer:

Mintu should have chosen material with lower specific heat.

Hope this is useful!! <3

Answer:

C:  Mintu should have chosen a material with a lower specific heat.

Explanation:

On EDG

Recall that if the colliding objects have hard surfaces, the collision is elastic. Based on this description, which bumper design is more likely to result in an elastic collision? Predict how this bumper design will change the force that car 2 experiences during the collision.

Answers

Answer: it going to be car 2

Explanation:

because they have a bumper and the bumper weigh more

The speed and direction of motion is ?
A. Acceleration
B. Velocity
C. Momentum
D. Deceleration

Answers

Answer:

B. Velocity

Explanation:

Velocity is equivalent to a specification of an object's speed and direction of motion.

1. What is cycled in a food chain?

2. What would happen in the food chain cycle if decomposers did not exist?

Answers

Answer:

1.) Energy flows through an ecosystem in one direction— through food chains. Food chains illustrate how energy flows through a sequence of organisms, and how nutrients are transferred from one organism to another. Food chains usually consist of producers, consumers, and decomposers.

2.) Imagine what would happen if there were no decomposers. Wastes and the remains of dead organisms would pile up and the nutrients within the waste and dead organisms would not be released back into the ecosystem. Producers would not have enough nutrients. Essentially, many organisms could not exist.

Which point on the diagram best represents the position of the Earth and the Sun
when it is winter in North America
A.point a
B.point b
C.point c
D.point d

Answers

I’m pretty sure point D cause North America is in the opposite direction of the sun

Point D is the point on the diagram best represents the position of the Earth and the Sun. when it is winter in North America.

What is the season?

A season is a division of the year that is based on variations in weather, ecology, and the number of daylight hours in a certain place.

Seasons on Earth are caused by Earth's orbit around the Sun and its axial tilt relative to the ecliptic plane.

When the Northern Hemisphere is tilted toward the sun, you experience summer. When the Northern Hemisphere has tilted away from the sun, you experience winter.

Hence point D is the point on the diagram best represents the position of the Earth and the Sun. when it is winter in North America.

To learn more about the season refers to the link;

https://brainly.com/question/2458385


Which of these describes the part of the water cycle happening at D

Answers

The answer is Runoff.
im pretty sure its runoff! hope this helps :)

Fill in this pretty little blank.

Cause ima very _____ ____ get ___ ____ ___ momma.

-Mulatto
Hit that latto

Answers

Freaky girl , it from my

Answer:

freaky girl      

it from my

Explanation:

lol

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