In a physics motion study, students established a frame of reference for measurements. Which of the following is their most likely choice?
A. time since the beginning of the class period
B. mass as a ratio to that of the same volume of water
C. distances from two walls and the floor
D. temperature at the start of the motion

Answers

Answer 1
I think it might be (D)

Related Questions

What happens when an object absorbs all the light striking it?

It appears blue.

It appears red.

It appears black.

It appears white.

Answers

Answer:

it appears black

Explanation:

that's my best guess

The answer would be black

An object has an acceleration of 18.0 m/s/s. If the net force was doubled and the mass were tripled then the new acceleration would be

Answers

Answer:

12.0 m/s²

Explanation:

Newton's second law:

F = ma

Solving for acceleration:

a = F/m

If force is doubled and mass is tripled:

a' = (2F)/(3m)

a' = ⅔ (F/m)

a' = ⅔ (18.0 m/s²)

a' = 12.0 m/s²

The new value of acceleration of object is 12 m/s².

Given data:

The magnitude of acceleration of object is, [tex]a =18 \;\rm m/s^{2}[/tex].

Let F be initial net force and m be the initial mass. Then as per the problem, the new values of each are,

F' = 2F

m' = 3m

Apply the Newton's Second law, which says that the product of mass and acceleration of object given net force. Then,

F = ma

F = m(18)

F/m = 18 .................................................(1)

Now, for new value of net force,

F' = m'a'

2F = (3m) a'

2F/3m = a'

a' =2/3× (18)                                                   (From equation 1)

a' = 12 m/s²

Thus, we can conclude that the new value of acceleration of object is 12 m/s².

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the upper body primal movement patterns are

Answers

Answer:

Bend to extend. Bending with a hips back movement, back straight, feet flat and forward. ...

Squat. This is a hips down motion. ...

Lunge. This is a long, linear stride, lowering your back knee to just above the ground, with a completely upright torso. ...

Rotate. ...

Push. ...

Pull. ...

Gait.

What evidence (data) would support the claim that an increase inhuman population contributes to the emission of greenhouse gases?
A. greenhouse gas production has leveled off once the global population reached a certain number

B. amount of greenhouse gases produced varies with the level of development a country has reached

C. greenhouse gas emissions per individual humas has decreased over the past 30 years

D. 10 countries with the largest populations are the countries that produce the most greenhouse gases

Answers

Hey there!

The answer would be D. 10 countries with the largest populations are the countries that produce the most greenhouse gases.

This is the only statements that supports the idea of large populations affecting the emissions of greenhouse gases.

Hope this helps!

A tugboat is pushing a barge in to a harbor.The barge is exerting a force of 3000 N against the tugboat.which force would most likely allow the tugboat to move the barge into the harbor​

Answers

Answer: The Answer is -4500 N

Due very soon! 100 points please answer for all three diagrams!
The woman supports a 100 N load with the friction free pulley system shown below. Fill in the spring scale readings that show how much force she must exert.

Answers

Answer:

1. 100N 2. 50N 3. 50N

Explanation:

The spring scale reading that shows how much force she must exert is 1. 100N 2. 50N 3. 50N.

What is the spring scale?

A simple and affordable way to determine mass is by using spring balances. The mass is suspended from the end of the spring, and the spring's deflection as a result of the mass's downward gravitational pull is measured in relation to a scale.

The word "force" has a specific meaning in science. At this level, calling a force a push or a pull is entirely appropriate. A force is not something an object "has in it" or that it "contains."

One thing experiences a force from another. There are both living things and non-living objects in the concept of a force.

Therefore, her required force is indicated by the spring scale readings of 1. 100N, 2. 50N, and 3. 50N.

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_ is (are) the type of electromagnetic wave(s) with a wave length between 700 and 400 billionths of a meter.

Answers

Answer:

Visible Spectrum is the type of electromagnetic wave with a wave length between 700 and 400 billionths of a meter.

If Earth was with no tilt, would we still have seasons at all? If so, how would they be different?

Answers

Answer:

If earth had no tilt, we would have no seasons.

Explanation:

As stated in the answer, if the earth had no tilt we wouldn't have seasons. The earth all around the globe would maintain the same temperature,

And due to the no tilt it would also change our orbit to a bit larger slant, in January when we are at our closest to the sun we WOULD have a mini summer. For the North and South Pole, they would remain cold.

A student measured the volume of three rocks. The diagram above shows the
results of her investigation. Which correctly orders the rocks from least to
greatest?
A. Rock A, Rock B, Rock C
B. Rock C, Rock A, Rock B
C. Rock B, Rock C, Rock A
D. Rock A, Rock C, Rock B

Answers

Answer:

option B is right

...............

Answer: A C B

Explanation:

If you look closely the water levels show which is bigger fun fact.

identify the correct order of increasing intermolecular force of attraction for the three most common states of matter.

A) liquid - solid - gas
B) Solid - liquid - gas
C) gas - liquid - solid
D) gas - solid - liquid

Answers

I believe it’s C) gas- liquid- solid

The correct order of increasing the intermolecular force of attraction for the three most common states of matter is C) gas - liquid - solid.

What is an intermolecular force in matter?

An intermolecular force is a force of attraction or repulsion that exists between molecules or atoms within a substance.

Here,
In the gaseous state, the intermolecular forces are weak, and the molecules are far apart and move freely in all directions. In the liquid state, the intermolecular forces are stronger, and the molecules are closer together, but still able to move past each other. In the solid state, the intermolecular forces are the strongest, and the molecules are tightly packed together in a fixed arrangement, which results in a definite shape and volume.

Therefore, the correct order of increasing the intermolecular force of attraction for the three most common states of matter is gas, liquid, and solid.

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I can not find the answer to the one after potassium ?

Answers

Answer:

it’s halogen

Explanation:

how are magnetic field lines like electric field lines?

A. they always point away from the north pole
B. they never connect
C. they always point toward a negative pole
D. they never cross

Answers

Answer:

I think maybe D

Explanation:

A is wrong, it has to be reversed

B is wrong cause they connect at the poles

C is wrong cause they always point north (that's how compases work)

D is the only one that could be possible

Hope this helped! :D

which of the following describes glass?
A. a material that has a low resistance and allows charges to move freely
B. a material that has a high resistance and prevents charges from moving freely
C. a material that has a low resistance and prevents charges from moving freely
D. a material that has a high resistance and allows charges to move freely

Answers

Answer:b

Explanation:

Empty spaces are referred to as

Answers

Answer:

An unoccupied area or volume. The empty space at the sides of the page is called the "margin". ... Atoms are 99.999999999999% empty space.

Explanation:

Answer:

A vacuum.

Explanation:

A vacuum has an empty space and is used in Science.

What is TRUE with regard to Bronfenbrenner's social ecological model applied to the context of relationships?

Answers

Answer:The affects of proximal factors on a relationship are affected by distal factors

Explanation:

A few Physics questions regarding circuits and electricity.

Answers

Answer:

7.series

Explanation:

in parallel is like if one bulb stops work all the others will stop too

in series it remains constant or it wont change throughout a series circuit

An isotope releases radiation in order to ____________ its nucleus.

stabilize

destroy

Answers

Answer:

stabilize

I think this should be the answer...

Answer stabilize

Explanation: hope it’s right

Based on the table, which isotope is best suited for use as a radioactive tracer for the body’s use of calcium? calcium-40 calcium-45 calcium-47 calcium-49

Answers

Answer:

calcium-47

Explanation:

Just did the test. Good Luck!

The isotopes of calcium are artificially produced to use them as a radioactive tracers. Calcium 47 is best suited for use as a radioactive tracers for body's use of calcium.

What is radioactive tracer?

A radioactive tracer consists of a chemical compound in which one or more atoms are replaced by a radioisotope.

Out of the six isotopes of calcium, calcium 47 is the most suitable isotope.

Calcium-47 consists of the half-life of about five days. This duration is long enough for biological investigations.

Thus, Calcium 47 is best suited for use as a radioactive tracers for body's use of calcium.

Learn more about radioactive tracer.

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A book with a mass of 1.2 kg sits on a bookshelf. If it has a gravitational
potential energy of 50 J, how high is the shelf? The acceleration of gravity is
9.8 m/s2
A. 1.2 m
B. 4.3 m
C. 5.9
D. 2.7 m

Answers

I'm sorry, I just saw this. I hope I'm not too late.

GPE = mass * gravity * height

height = GPE/(mass * gravity)

height = 50/(1/2 * 9.8)

height = 10.2041 Meters

Television satellites use infrared waves to transmit. true or false

Answers

Answer: false

Explanation: Because Television satellites use microwaves waves to transmit.

Answer: False

Television satellites don't use infrared waves to transmit.

A light beam approaches a plain mirror at an incident angle of 39
degrees. What is the angle of reflection?

Answers

Angle is 31 adding all sides

Which statements accurately describe trends found in the periodic table? Check all that apply.

Henry Moseley established a periodic table that arranges the elements by atomic number.
The atomic mass decreases from left to right on the periodic table.
The atomic number increases from left to right on the periodic table.
Nonmetals create a “staircase” down the periodic table.
Metalloids have the characteristics of both metals and nonmetals.

Answers

Answer:

A.)Henry Moseley established a periodic table that arranges the elements by atomic number.

C.)The atomic number increases from left to right on the periodic table.

E.)Metalloids have the characteristics of both metals and nonmetals.

Explanation:

Direct notes from edge:

-Metalloids have characteristics of both metals and nonmetals

-As you move left to right, the atomic number of each element increases by 1

-Henry Moseley Arranged elements in order of increasing atomic number

2. Which is a possible unit of mass?
gram
liter
meter

Answers

Answer:

Gram

Explanation:

Meter is a unit used to measure length and liter is used to measure liquids therefore using process of elimination the answer has to be gram

Which layer of the Sun appears pinkish-red during a solar eclipse?

Answers

Answer:

the answet is the 3 layer of the sun

Explanation:

isaw a solar eclipse and leanerd is

Answer:

Chromosphere

Explanation:

It is the second of the three main layers in the Sun's atmosphere and is roughly 3,000 to 5,000 kilmoeters deep.It's rosy red color is only apparent during eclipses.The chromosphere sits just above the photosphere and below the solar transtion region.

4. Convert this distance( 9cm)into MILES, using the scale provided:
Answer:

Answers

0.000056 bc if you convert it it’s the answer I said

For any energy source including batteries, there will be conduction of electricity if there is a potential
difference
similarity

Answers

Answer:

Difference

Explanation:

The electricity conduction happens when there is a flow of current. The flow of current from one point to another can only occur if there is a potential difference.

If there is not potential difference between two points the current will not flow and thus electricity conduction will also be not possible. The current in the circuit will flow from higher potential point to lower potential point.

Which image illustrates the bending of a wave around the edge of an
obstacle?

Answers

Answer:

Explanation:

It’s C

The shock from an electric fence would be the least unpleasant if you were
standing
A. on dry, thick gravel
B. in tall grass
C. In wet grass
OD. near the livestock

Answers

Answer: on dry , thick gravel

Explanation:

Study the image of a seismic graph.

Graph of P & S Wave Travel Times, showing Travel time in minutes across distance in kilometers for P and S waves. S wave starts at zero kilometers, zero minutes, and increases to 10,000 kilometers, 25 minutes. P wave starts at zero kilometers, zero minutes and increases to 10,000 kilometers, 13 minutes.

About how far does the S wave travel through Earth in 13 minutes?

2,000 km
4,000 km
6,000 km
8,000 km

Answers

Answer:

It is B. 4,000

Explanation:

I just took the quiz on edge2020

Answer:

B

Explanation:

Which of the following is an inclined plane?
- Stairs
- Wheelchair ramp
- Sloping driveway
- Road going up a mountain

Answers

Explanation:

Wheelchair ramp

An inclined plane, also known as a ramp, is a flat supporting surface tilted at an angle, with one end higher than the other, used as an aid for raising or lowering a load.

Road going up a mountain
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