Can someone help me its A,B,C,D

Can Someone Help Me Its A,B,C,D

Answers

Answer 1
i think C i’m so sorry if i’m wrong tho.

Related Questions

Two forces are applied to a car in an effort to accel-
erate it,
a. What is the resultant of these two forces?
b. If the car has a mass of 3200 kg, what accelera-
tion does it have? Disregard friction

Answers

Answer:

R=2F

Explanation:

As the forces are in same direction so the resultant force will be:

R=F+F

R=2F

A car enters a freeway with a speed of 6.5 m/s and accelerates to a speed of 24 m/s in 3.5 min. How far does the car travel while it is accelerating? (Hint: find the acceleration first)

a 3205.5 m
b 1548.75 m
c 76.13 m
d 761.3 m

Answers

Explanation:

Using Equations of Motion :

(1) v = u + at

24 = 6.5 + a * 210

a (Acceleration) = 0.083 m/s^2

(2) v^2 = u^2 + 2aS

S = 576 - 42.25 / 0.166

S (Distance travelled) = 3215.3 m

(Option A seems a typo since the answer is 3215.3 m)

You wish to push a cart across a friction less surface, so you
apply a 20 N force for a period of 3 seconds. As a result, the
cart goes from rest to a velocity of 2.3 m/s. What is the mass of
the cart?

Answers

Answer:

Explanation:

a= (2.3 m/s) / (3.0s) = 0.77 m/s2F= ma20.0 N = m (0.77 m/s2)m = 26 kgForce is measured with?Newtons (N) --> 1 N = 1 kg m/s2

A bus traveling at 25.2mi/h speeds up at a constant rate of 9.2x10^-3 m/s^2. What velocity does it reach 25min later?

Answers

Answer: actually to solve this u must know what 3.2m/s2 is..do u know it ??...wel let me tell...3.2m/s2 means that in every second the speed of the body increases by 3.2m/s..so if it acts for 6.8 seconds..increase in speed will be 3.2*6.8   however note that this is the increase in speed.. have to change this in km/hr & add this to the initial speed(27km/hr) to get the answer....hope this has cleared ur doubts....

Explanation:

A car travels 15m east, then 5 m north, then 15m west. What is the car's
displacement?

Answers

Answer:

5m north

Explanation:

The displacement of an object is its deviation from it initial position.

given that the initial position is

15m east and it moves 5m north

then 15m west

displacement is = 15+5-15

displacement is= 5m north

kindly see attached a rough sketch for your reference.

should you need further clarification let me know.


How can momentum conservation be explained using money?

Answers

A collision occurring between 1 dolar and 5 dolars in an isolated bank

A boy standing on the bridge kicks a stone into the water below. He kicks the stone with a horizontal velocity of 6.59 m/s. It lands in the water 10.92 m away from the bridge. How high is the bridge?

Answers

The stone travels a horizontal distance of

x = (6.59 m/s) * t

after time t. For the stone to have covered 10.92 m, it would have traveled for

10.92 m = (6.59 m/s) * t

t = (10.92 m) / (6.59 m/s)

t ≈ 1.66 s

The stone's altitude at time t is

y = h - g/2 * t²

where g = 9.80 m/s² is the acceleration due to gravity, and h is the height of the bridge. The stone reaches the ground after about 1.66 s, so at that point y = 0 and we solve for h :

0 = h - 1/2 * (9.80 m/s²) * (1.66 s)²

h = 1/2 * (9.80 m/s²) * (1.66 s)²

h13.5 m

How many minutes in a century?

Answers

Answer:

52,596,000

Explanation:

About equalivent to 52.6 million

When there are two light sources then there will be two shadows. Given below is a case where there are two light sources but one of the light sources is brighter than the other. Can you tell which shadow will be darker? Give explanation.

Answers

neither, a shadow cant be darker unless your closer to the surface your pointing the light at.

A wave has a length of 8 meters and a speed of 32 meters per second. What is the frequency of the wave

Answers

Answer:

The frequency of wave is 4 hertz.

Explanation:

Given,

wave length = 8m

speed of sound ( v) = 32 m/s

frequency ( f) = ?

we know,

v = f × lambda

or, 32 = f × 8

or, f = 32/8

or, f = 4 Hertz.

The acceleration due to gravity on the Moon is gM. Suppose an astronaut on the Moon drops an object from a height of H. The time it would take the object to reach the Moon’s surface would be TM. The same object is dropped from the same height on Earth, where the acceleration due to gravity is gE. The time it takes the object to reach the Earth’s surface is TE. Which of the following is a correct mathematical relationship for the two times?
TE=gEgM−−−√TM

TE=gEgMTM
A

TE=gMgE−−−√TM

TE=gMgETM
B

TE=gEgMTM

TE=gEgMTM
C

TE=gMgETM

TE=gMgETM
D

TE=TM

Answers

The relationship between the two times is [tex]TE = TM\sqrt{\frac{gM}{gE} }[/tex]

The given parameters:

the acceleration due to gravity on the Moon = gM

height from which the object was dropped on moon, =  H

time taken for the object to reach the moon surface, = TM

height from which the object was dropped on Earth, =  H

the acceleration due to gravity on the Earth = gE

time taken for the object to reach the Earth's surface = TE

To find:

The relationship between the two times:

Apply the following kinematic equation:

[tex]H = ut + \frac{1}{2} gt^2\\\\we \ know \ nothing \ about \ the \ initial \ velocity \ u , let \ u = 0\\\\H = \frac{1}{2} gt^2\\\\[/tex]

Height equation for the object on the moon:

[tex]H = \frac{(gM) TM^2}{2}[/tex]

Height equation for the object on the Earth:

[tex]H = \frac{(gE) TE^2}{2}[/tex]

Since the two heights are equal, set the two equation to be equal to each other to determine the relationship between the two times:

[tex]\frac{(gE)TE^2}{2} = \frac{(gM)TM^2}{2} \\\\(gE)TE^2 = (gM)TM^2\\\\make \ TE \ the \ subject \ of \ the \ formula;\\\\ TE^2 = \frac{(gM)TM^2}{gE} \\\\TE= \sqrt{\frac{(gM)TM^2}{gE} } \\\\TE = TM\sqrt{\frac{gM}{gE} }[/tex]

Thus, the relationship between the two times is [tex]TE = TM\sqrt{\frac{gM}{gE} }[/tex]

Learn more here: https://brainly.com/question/10958733

Position vs Time
20
15
10
B
5
C
position (m)
0
D
-5
-10
-15
E
20
0 1 2 3
8
9
10
11
12
4 5 6 7
time (sec)
401320

Answers

Answer:

20

15

10

B

5

C

position (m)

0

D

-5

-10

-15

E

20

0 1 2 3

8

9

10

11

12

4 5 6 7

time (sec)

Explanation:

okk

which term refers to a variable that is not allowed to change during an experiment​

Answers

Answer:

controlled variable

Explanation:

here you go

A control variable refers to a variable that is not allowed to change during an experiment​.

What is the control variable?

A control variable or scientific constant can be described as an experimental element that is constant and unchanged throughout the course of the investigation in scientific experimentation.

Control variables can strongly affect experimental results where they are not held constant during the experiment in order to test the relative relationship between the dependent and independent variables.

A variable is held constant in order to assess the relationship between multiple variables in an experiment and is a control variable. A control variable is not changed throughout an experiment because its constant state allows the relationship between the other variables. A control variable is what is kept constant throughout the entire experiment.

Therefore,  a variable that is not allowed to change during an experiment​ is a controlled variable or scientific constant.

Learn more about control variable, here:

https://brainly.com/question/17555102

#SPJ5

what is the density of 15kg block of wood wuth a volume of 1.5 cubic meters

Answers

Density = mass/volume
Density = 15kg/1.5m^3
Density = 10kg/m^3

If a substance was described as smooth, square, and tan, what properties are
being referred to?
A. Mechanical properties
B. Chemical properties
0
C. Artificial properties
0
D. Physical properties

Answers

D.) is the correct answer!

If a substance was described as smooth, square, and tan, what properties are being referred to its physical properties. Option D is correct.

What is physical properties ?

Any measurable property whose value represents a condition of a physical system is referred to as a physical property.

A system's physical attributes can be utilized to characterize its transitions between brief states. Observable is a term used to describe physical qualities. These aren't modal attributes at all.

If a substance was described as smooth, square, and tan, what properties are being referred to its physical properties.

Hence, option D is correct.

To learn more about the physical properties, refer to the link;

https://brainly.com/question/18327661

#SPJ2

the unit of force, Newton is a derived unit. (give reasons) ​

Answers

Answer:

[tex] \boxed{ \sf{see \: below}}[/tex]

Explanation

The unit of force, Newton is a derived unit because it depends on three fundamental units. i.e kilogram , meter and second.

Hope I helped!

Best regards! :D

Does a calculation lose any information when converted from centimeters to meters? Explain

Answers

Answer:

No

Explanation:

There are many units that are used to measure length of an object. For example centimeters, meters, millimeters etc.

There is a relationship between any of two units to measure lengths. If we want to convert some length from cm to m, it can be done as follows :

1 cm = 0.01 m

or

1 m = 100 cm

When we use this conversion, the calculation remains the same. Only the way to represent it will be different.

Hence, there is no lose of information when converted from centimeters to meters.

compare the advantages and disadvantages of converting our system of measurement in the united states from the English system to the international system of units

Answers

Answer:

This is required answer.

Explanation:

Given that,

The advantages and disadvantages of converting our system of measurement in the united states from the English system to the international system of units

The difference between SI units and english system units.

SI systems,

The SI system uses metre, kilogram and second.

English system,

The english system uses yard, foot, cubit, mile, quart, pint, gallons, etc.

We need to find the comparison between  system of measurement in the united states from the English system to the international system of units

Advantage :

The most advantage of SI unit is that it has only one unit for each quantity. It means, it is never needed to change from one unit to another unit and here is no changing factors for students to memorize.

Disadvantage :

The most disadvantage of english system is that it has more unit for each quantity. It means, it is needed to change from one unit to another unit and here is changing factors most for students to memorize.

Hence, This is required answer.

Transitioning to the International System of Units (SI) offers global standardization, simplicity, and consistency in measurements, promoting scientific accuracy and ease of communication. However, the process involves costs, potential resistance to change, and considerations of cultural and practical factors that need to be carefully addressed for a successful conversion.

Here's a comparison:

Advantages of converting to the SI system:

1) Global Standardization: The SI system is the most widely used system of measurement worldwide, ensuring uniformity and ease of communication in international trade, science, and engineering.

2) Simplicity and Coherence: The SI system is based on a decimal system, making conversions between units straightforward and logical.

3) Consistency and Interchangeability: SI units are based on well-defined standards and physical constants, providing a consistent and unambiguous way to express quantities, and improving the accuracy and reliability of measurements.

4) Learning and Education: Adopting the SI system in education can simplify the learning process for students and facilitate the understanding of scientific concepts, promoting scientific literacy.

5) Compatibility with Technology: The SI system is compatible with modern technology and scientific instruments, enhancing the accuracy and precision of measurements.

Disadvantages of converting to the SI system:

1) Transition Costs: Implementing a change in the entire measurement system can be costly, requiring new standards, education, and recalibration of equipment and infrastructure.

2) Resistance to Change: People who are familiar with the English system may initially resist adopting the SI system, leading to a learning curve and potential confusion during the transition.

3) Cultural Factors: The English system has been ingrained in the culture and everyday life of the United States, and some may argue for preserving the historical tradition of the system.

4) Potential Loss of Precision: In some cases, the SI system may result in rounded or approximated measurements, leading to potential loss of precision compared to the English system.

5) Mixing Units: During the transition period, there might be a mix of both systems, leading to potential errors or misunderstandings when using different units.

In summary, transitioning to the International System of Units (SI) offers global standardization, simplicity, and consistency in measurements, promoting scientific accuracy and ease of communication.

To know more about the international system of units:

https://brainly.com/question/30404877

#SPJ3

A square sheet of rubber has sides that are 20 cm long. What is the area of the square of rubber in cm squared?
Area of the square of rubber =?

Answers

Answer:

400cm^2

Explanation:

sides are 20cm long Area for a square is a squared

since all the lides are of equal length you can just choose one side.

20squared is 400

20 x 20 = 400cm squared

Hope this helps :)

A ball is thrown upward. The total time the ball remains in the air is 14 s. a) With what speed was the ball thrown upward? b) What is the maximum height reached by the ball?

Answers

Answer:

a) Vi = 137.2 m/s

b) h = 960.4 m

Explanation:

a)

In order to find the initial speed we will use first equation of motion:

Vf = Vi + gt

where,

Vf = Final velocity = 0 m/s (since ball stops at highest point)

Vi = Initial Velocity = ?

g = - 9.8 m/s² (negative sign for upward moyion)

t = time interval = 14 s

Therefore,

0 m/s = Vi + (-9.8 m/s²)(14 s)

Vi = 137.2 m/s

b)

Now, we use second equation of motion to find height (h):

h = Vi t + (1/2)gt²

h = (137.2 m/s)(14 s) + (1/2)(-9.8 m/s²)(14 s)²

h = 1920.8 m - 960.4 m

h = 960.4 m

A cargo with a mass of 50 kg can withstand a maximum velocity of 26 m/s. If dropped on the moon, where the acceleration due to gravity is -1.6 m/s2, how long will it be in free fall?

Record your answer as a positive number (because time cannot be negative) and round to the whole number.
You do not need to include units.

Answers

Wouldnt the answer be 1.6 m/s²?

I am sorry if its not.

What is uniform acceleration

Answers

Answer:

It means zero acceleration.

Explanation:

When a body moves with constant velocity then it is said to be there is no rate of change of velocity takes place because it is constant. So the acceleration becomes zero or uniform acceleration.

>Explain whether life could exist on other
planets or moons in our solar system.​

Answers

Answer:

The direct answer to the question "Can there be life..." is that there is potentially a non-zero possibility. Testing the null hypothesis, that there "cannot be life" is quite difficult. Evidence for and against both positions exists. However strong the arguments for life, space provides many harsh environments, yet we know deep in our oceans at hydro-thermal vents or in volcanic geysers there is life. Seeing volcanism on other worlds at least provides a necessary energy source. But the null hypothesis has a fatal flaw. We know of one location where there is life, and we discover over and over again that its conditions are not very special in the Universe. The famous Drake equation goes much further, to single out intelligent life that still exists today and wishes to communicate. But in very sad news for the null hypothesis, even it is non-zero.

Life can exists on other planets because other plants have breathable air and it provides a atmosphere that can allow use to live

While riding her bike, Maria averaged a velocity of 20 m/s. If she maintains that a velocity for a time of 20 seconds, how far does she ride?

Answers

Answer:

400m

Explanation:

distance = speed x time

20 x 20

=400m

A jet plane acceleration along a straight run way from rest to a speed of 140 m/s in 50 seconds when it took off. Calculate:
1- it’s change of velocity
2- it’s acceleration

Please help me it’s emergency

Answers

Answer:

Vf=140 m/s

Vi=0

t=50s

Explanation:

1. Acceleration is called change of velocity.

2. a=Vf-Vi/t

a=140-0/50

a=140/50

a=2.8m/s^2

Frozen dirt can be harder than concrete. Explain why this is true.

Answers

plant material in the soil called organic carbon can't decompose, or rot away.

Which of the following is an example of mechanical energy?

The light from the sun.

The energy in a ball as it is falling.

The heat from a fire.

The light from a light bulb.

Answers

Answer:

The light from a light bulb

Explanation:

The energy in a ball as it is falling is the right example of mechanical energy. Mechanical energy is the sum of kinetic and potential energy.

What is mechanical energy?

Mechanical energy is the energy obtained by the things in which work is performed. Mechanical energy is the energy that an item possesses as a result of its motion or location.

The light from a light bulb. and the light from the sun is a  form of light energy, the heat from a fire is an example of the thermal energy,

The energy in a ball as it is falling is the right example of mechanical energy. Because it includes the potential energy which is the virtue of the position and the kinetic energy due to the motion.

Hence option A is correct

To learn more about the mechanical energy refer to the link;

https://brainly.com/question/13552918

Can a platform be in equilibrium if the two upward forces are equal to each other?​

Answers

Answer:

Equilibrium is a state of consistency. An object under the influence of just one force cannot be equal. Only when there is no force at all, or when two or more forces meet zero, can the object have equilibrium.

Explanation:

define the focus of a concave lens ​

Answers

Answer:

Principal focus of concave lens -

★ The point at which rays parallel to principal axis coming from infinity appear to converge after being refracted from concave lens is called the principal focus of concave lens.

________________________

Additional information -

Principal focus - A number of rays parallel to the principal axis after reflection from a concave mirror meet at a point on the principal axis or appear to come from a point after reflection from a convex mirror on the principal axis. This is called principal focus.

The property of matter that describes what it is made of

Answers

Answer:

Miixture

Explanation:

The answer is mixture

Other Questions
It rained 2 inches on Monday. On Tuesday, it rained 0.61 inches less than on Monday. How much did it rain on Tuesday? what is the gold-salt trade 7(-8)-2y=-52help... The dot plot shows the number of touchdowns a football team scored in 10 games What temperature is 24 warmer than-12 C? Could someone uh, help me? Im a bit confused. A parasail is 3/100 mile above the water. After five minutes, the parasail is 1/50 mile above the water. Find the change in height of the parasail. i need six facts pottawatomie massacre ASAP!!' .A. 139B. 147C. 155D. 157PLEASE HELP ASAAAPP! What does b equal??? Vishal was interested in the relationship between a person's age and their musical preferences. He called allthe numbers listed in his city's telephone directory, and whenever someone answered and agreed to besurveyed, he asked them for their age and interviewed them about their musical preferences.Once he was done, he analyzed his results and found that younger people prefer pop and hip-hop musicwhile older people prefer jazz and classical music.What type of statistical study did Vishal use?Choose 1 answer:Sample studyExperimentObservational study why was the scientific revolution a privotal time in history 1.9 x (1/4) answer as a fraction BDE3In the figure above, tan BIf BC = 15 and DA = 4, what is the length of DE Why did the Constitution not get signed right away? A guppy was swimming 8 feet below the surface of the river. It swam down 6 more feetto escape a large, hungry fish. What is the position of the guppy now relative to thesurface?To solve the problem, Jenna subtracted 8 - 6 and came up with an answer of 2 feet. Is Jennacorrect? Why or why not?Yes, Jenna is correct.No. The answer should have been -2 feet, not 2 feet, because the guppy isbelow the surface.No. Jenna should have subtracted -8 - 6 because the guppy started 8 feetbelow the surface and swam down 6 more feet. In his informational text Immigrant Kids, author Russell Freedman writes that the voyage immigrants made across the ocean was "an ordeal." Who would be the best source to quote to give credibility to this idea? the captain of a ship that carried immigrants an immigrant to the US an immigrant who had travelled to the US by ship the daughter of an immigrant to the US Which statement explains why African slavery was introduced to the Americas?a.The Spanish needed a large army to defeat the Native Americans, and African slaves were immune to New World diseases.b.A potato famine in Africa forced millions of starving Africans into slavery.c.The Native American population was reduced and African slaves were needed to work on the sugar plantations.d.The Spanish conquered Africa and took millions of Africans as slaves. Which student would best be helped by using a dictionary?Campbell is looking for another way to describe her fat bunny.Erin would like to find some antonyms for the word excel.Zachary needs to find several synonyms for the word capacity.Kyle wants to see the word plummet used in a sentence. match each term with its correct definition or description