a. second

b. metre

c. hand span

d. gram

**Answer: Hand span**

**Explanation: Hand span is not a standard unit.
**

**
**

**Second is the unit of time.
**

**
**

**Meter is the unit of length or distance covered by an object.
**

**
**

**Gram is the unit of weight of an object.
**

**
**

**Hand span is not a standard unit. This is because the size of hand varies from person to person. Hence, the correct option is (c) "hand span".**

Hand span is not a standard unit

Which is greater 45 RPM or 4.71 rad/s? Why?

**45 rpm** is greater/faster. Convert both measurements to the same unit rate:

45 rpm = (45 rev) / (1 min) = (45 rev) / (60 s) = 0.75 rps

4.71 rad/s = (4.71 rad) / (1 s) • (1 rev) / (2*π* rad) = (4.71 rev) / (2*π* s) ≈ 0.74962 rps

The moon revolves around Earth. The moon travels at a speed of about 1 km/s. What keeps the moon in orbit around Earth?

A.Nuclear Fusion

B.Gravity

C.Magnetism

D.Ocean Tides

**Answer:**

I know its not A or D so its B or C and the more logical answer would be B. gravity

**Explanation:**

I will make brainliest! PLS HELPPP!!

Answer these questions:

1. How is a mixture different from a compound?

2. How are the atoms in a compound held together?

Classify the following as mixtures, elements, or compounds:

3. H20

4. H4

5. Fe + S

**Answer:**

1.A compound is when two substances are put together and there is a reaction creating a new substance Ex. H20. A mixture is when two substances are put together, there is no reaction and they can be separated easier than compounds. Ex. salad dressing.

2.Atomic bonds

3.Compound

4.Element

5.Mixture

**Explanation:**

A piece of wire length 30cm and cross sectional area of 0.5mm^2 has a resistance of 5ohms at 20°c. It is then heated to a temperature of 150°c. Calculate it's resistivity at 20°c

**Answer:**

** 8.333*10^-6 ohms**

**Explanation:**

Resistivity of a material is expressed as;

p = RA/l

R is the resistance of the material

A is the cross sectional area

l is the length of the material

Given

R = 5 ohms

A = 0.5mm^2

A = 5 * 10^-7m^2

l = 30cm = 0.3m

Substitute into the formula;

p = (5 * 5 * 10^-7m^2)/0.3

p = 25 * 10^-7/0.3

p = 0.0000025/0.3

p = 8.333*10^-6

**Hence its resistivity at 20 degrees Celsius is 8.333*10^-6 ohms**

What are the units we measure length or distance in?

I have to type more to ask but I would greatly appreciate it if you guys could answer my question thank you very much

**Answer:**

U could measure it in area and in operations.

**Answer:**

meters, millimeters, kilometers, centimeters, inches, feet, yards, miles

When parallel parking, you should select a space that is __________ as long as your car.

A: exactly

B: one and a half times

C: two times

**Answer:**

1 1/2 times the length of the car.

**Explanation:**

The way I parallel park, I'd want 3 or more lengths to get in, but I imagine that the answer is B and that is correct when you look it up.

the answer is A. exactly enough space for your car

why a small car can stop easier than an 18 wheeler while traveling at 70 mph down the interstate?

Smaller cars have less momentum than bigger cars. What’s in motion stays in motion but objects with more momentum (can be from weight or from speed but in this case it’s about weight) tend to stay in motion longer.

If the frequency of a wave is 0.25 Hz, what is its period?

A) 0.25 s

B) 2 s

C) 4 s

D) 4 HZ

**Answer:**

C

**Explanation:**

frequency = 1 / period

so

frequency = 0.25

0.25 = 1 / period

1 / 0.25 = period

4 s = period

it is not 4 Hz because period is the time taken

so the answer is C

hope this helps ,please mark it

Which of the following terms are needed to completely describe speed?

Check all that apply.

A. Direction

B. Units

C. Mass

D. Number

Mass and number and directions

**Answer: c. and a**

**Explanation:**

An object is moving to the right at a constant velocity. What will happen if a

force of 20 N starts acting on it in the opposite direction?

А The object's velocity will increase.

B

The object's velocity will decrease.

с

The object will come to a stop.

D

The object will move at the same velocity.

B. Is correct answer

Which statement correctly defines power

**Answer:**

The ability to do something or act in a particular way, especially as a faculty or quality.

"The power of speech"

What latitudes experience both summer and winter?

There are only two times of the year when the Earth's axis is tilted neither toward nor away from the sun, resulting in a equal amount of daylight and darkness at all latitudes. These events are referred to as Equinoxes.The word equinox is derived from two Latin words - aequus (equal) and nox (night). At the equator, the sun is directly overhead at noon on these two equinoxes. How do the climatological temperature patterns follow the four seasons? The temperatures are pretty much the same when comparing early winter to late winter and pretty much the same when comparing early summer to late summer. However, late Fall is much colder than early Fall and late Spring is much warmer than early Spring. Why is that? The reason is linked to the changing of the solar sun angle during each season. In the Fall, the sun angle is always getting lower and in the Spring it is always getting higher. From this it would make sense that late Fall is much colder than early Fall and late Spring is much warmer than early Spring. In the winter, the sun angle is INCREASING and in the summer the sun angle is DECREASING. This fact causes temperatures to be pretty much the same when comparing early winter to late winter and pretty much the same when comparing early summer to late summer. The cumulative cooling of the ground and ocean is partially offset by an increasing sun angle in the winter and the cumulative warming of the ground and ocean is partially offset by a decreasing sun angle in the summer. This causes the Spring and Fall seasons to seem much quicker in duration than the Summer and Winter seasons.** **

West

East

<

디

50 Newtons

40 Newtons

What is the net force on the box?

А

10 Newtons West

B

10 Newtons East

с

90 Newtons West

D

90 Newtons East

The answer is A, 10 newton's west

A . 10 Newton West

that's my Answer

Why isn't all fresh water usable?

This was off the internet -

Answer:

2.5% of the earth's fresh water is unavailable: locked up in glaciers, polar ice caps, atmosphere, and soil; highly polluted; or lies too far under the earth's surface to be extracted at an affordable cost.

Answer:

2.5% of the earth's fresh water is unavailable: locked up in glaciers, polar ice caps, atmosphere, and soil; highly polluted; or lies too far under the earth's surface to be extracted at an affordable cost.

**Answer:**

2.5% of the earth's fresh water is unavailable: locked up in glaciers, polar ice caps, atmosphere, and soil; highly polluted; or lies too far under the earth's surface to be extracted at an affordable cost

the faster an object moves, the __ kinetic energy it has.

more or less?

**Answer:**

More

**Explanation:**

Kinetic energy is a form of energy that results from work being applied to that object; thereby the faster it moves, the more energy it has stored and that energy is referred to as kinetic energy.

What is the acceleration of the object from 2s to 14s

12 seconds per mile and per hour

A researcher releases a weather balloon to study the atmosphere. The air temperature on the ground is 27 degrees. If the sensors read an air temperature of 17 degrees, then how far up has the balloon traveled?

**Answer:- Input for computer-based weather prediction models;**

**- Local severe storm, aviation, fire weather, and marine forecasts;**

**- Weather and climate change research;**

**- Input for air pollution models;**

**- Ground truth for satellite data **

**Explanation:**

A billiard ball rolls from rest down a smooth ramp that is 8.0 m long. the acceleration of the ball is constant at 2.0?

Sbsbbsbsbsbb jsjshbsbd. Disbanded. En

Jacob is building a soapbox derby car. He hopes to win an upcoming downhill race in his neighborhood.

Which of the following should he take into consideration if his only concern is winning the race?

A. the color of the goggles that he wears

B. the shape of the car he makes

C. the mass of the materials he uses

D. the strength of the materials he uses

Answer: The strength of the materials he uses.

1. A satellite (mass = 4.44 x 109 kg) travels in orbit around the Earth at a distance of 1.9 x 10'm above

Earth's surface. What is the force of gravitational attraction between the satellite and Earth?

**Answer:**

The force of gravitational attraction between the satellite and Earth is [tex]2.587\times 10^{10}[/tex] newtons.

**Explanation:**

Statement is incorrect. Correct statement is:

*A satellite (*[tex]m = 4.44\times 10^{9}\,kg[/tex]*) travels in orbit around the Earth at a distance of *[tex]1.9\times 10^{6}\,m[/tex]* above Earth's surface. What is the force of gravitational attraction between the satellite and Earth?*

The gravitational force experimented by the satellite ([tex]F[/tex]), in newtons, is calculated by Newton's Law of Gravitation, whose equation is defined by following formula:

[tex]F = \frac{G\cdot m \cdot M}{R^{2}}[/tex] **(1)**

Where:

[tex]G[/tex] - Gravitational constant, in cubic meters per kilogram-square second.

[tex]m[/tex] - Mass of the satellite, in kilograms.

[tex]M[/tex] - Mass of the Earth, in kilograms.

[tex]R[/tex] - Distance of the satellite with respect to the center of the Earth, measured in meters.

If we know that [tex]G = 6.674\times 10^{-11}\,\frac{m^{3}}{kg\cdot s^{2}}[/tex], [tex]m = 4.44\times 10^{9}\,kg[/tex], [tex]M = 5.972\times 10^{24}\,kg[/tex] and [tex]R = 8.271\times 10^{6}\,m[/tex], then the force of gravitational attraction between the satellite and Earth is:

[tex]F = 2.587\times 10^{10}\,N[/tex]

The force of gravitational attraction between the satellite and Earth is [tex]2.587\times 10^{10}[/tex] newtons.

BI

Kinetic Energy of a Ball

at a Constant Mass

500

400

Kinetic Energy (m)

300

200

100

0

0 5 10 15 20 25

Speed (meters per second)

10 meters per second, which statement describes the change in kinetic energy of a ball of the same mass thrown

Compared to a ball thrown

at 20 meters per second?

halt (%) the kinetic energy of the ball thrown at 10 meters per

The kinetic energy of the ball thrown at 20 meters per second

second

The kinetic energy of the ball thrown at 20 meters per second is two times (2) the kinetic energy of the ball thrown at 10 meters per

second

The kinetic energy of the ball thrown at 20 meters per second is the same as () the kinetic energy of the ball thrown at 10 meters per

second

The kinetic energy of the ball thrown at 20 meters per second is four times (4) the kinetic energy of the ball thrown at 10 meters per

Second

10:18 AM

3/4/2021

4

13 14 15 16 17 18 19

20 21 22

Next

**Answer: A**

**Explanation:**

1. What is the difference between thermal energy and heat? Give an example.

**Answer:**

when you run u get tied

**Explanation:**

I do not now this one

Read the description of the centrioles. What is their function?

**Answer:**

Typically found in eukaryotic cells, centrioles are cylindrical (tube-like) structures/organelles composed of microtubules. In the cell, centrioles aid in cell division by facilitating the separation of chromosomes. For this reason, they are located near the nucleus.

**Answer:**

sorry im just gettig points but the actaul anserw is on top of this one**Explanation:**

Bye

The Escape speed at the surface of a certain planet is twice that of the earth. what is its mass in unit of earth's mass?

Plzz help

**Answer:**

22Km/sec

**Explanation:**

1) A pendulum is configured to have a period of 2 seconds.

What is the length of the pendulum? (Use 10 m/s^2 for g)

If you doubled the length of the pendulum, what would its New Period be?

2) In a car collision, a car experiences a force for 1 seconds. The car’s mass is 700 kg and it was moving at 20 m/s before the collision and slowed down to 8 m/s.

What is the force on the car during the collision?

If the collision was with a 650 kg car that was at rest, what was the speed of the 650 kg car after the collision?

"The" (and any subsequent words) was ignored because we limit queries to 32 words.

if the period of the wave is 0.34 seconds what would be the frequency of the wave

**Answer:**

3 every second

**Explanation:**

A comparison within a text can be used by the author to relate things that are

**Answer:**

Putting together characters, situations, or ideas to show common or differing features in literary selections. Problem/Solution: An organizational structure in nonfiction texts, where the author typically presents a problem and possible solutions to it.

What kind of surface causes regular reflection? Expalin.

**Explanation The regular reflection takes place when the light rays are incident on a polished smooth surface like a plane mirror, a stainless steel sheet and a thin sheet of aluminum, so, the reflected rays of light move only in a fixed direction.**

Felix has a bucket of golf balls. The table shows the number of golf balls of each color in the

bucket.

Golf Balls in a Bucket

Number

Color

Pink

White

Orange

Green

4

11

8

18

Felix selects a golf ball at random. Based on the information in the table, which statement is

true?

A The golf ball is more likely to be green than all other colors combined.

B The golf ball is equally likely to be pink, white, orange, or green.

C The golf ball is 2 times as likely to be orange as it is to be pink.

D The golf ball is 7 times as likely to be green as it is to be white.

The **golf ball** is two times as likely to be **orange** as it is to be **pink**. Therefore, option C is correct.

**Probability** can be described as the branch of **mathematics** of numerical descriptions of how likely an **event** is to take place. The probability of an event can be a **number** between 0 and 1, where 0 indicates the **impossibility** of the event and 1 shows **certainty**.

Given, the number of **pink** balls = 4

The number of **white balls** = 11

The number of orange balls = 8

The number of** green balls **= 18

The **total** number of balls = 4 + 11 + 8 + 18 = 41

When Felix picks a golf ball at random. The golf ball is more likely to be pink = 4/41

The **probability** golf ball is more likely to be white = 11/41

The probability golf ball is more likely to be orange = 8/41

The probability golf ball is more likely to be **green** = 18/41

Therefore, the **golf bal**l is two times as likely to be orange as it is to be pink.

Learn more about **probability**, here:

https://brainly.com/question/11234923

#SPJ1

While frying French fries, Wanda burned her hand. Burns are examples of a:

a. skin abnormality.

b. homeostatic balance.

c. skin infection.

d. homeostatic imbalance.

**Answer:**

d. homeostatic imbalance

**Explanation:**

**Answer:**

It's D

**Explanation:**

I'm pretty sure but if im wrong I'll give you the points back <3

ACTIVIDAD .ACTIVIDAD REFLEXIVA 1 Escribe algunos de los valores que la juventud puede aportar a la vida y a la sociedad en general y explica el por qu de ellos. 2. Escribe algunas de las enseanzas que podemos aprender de nuestros mayores. 3. De acuerdo con el contenido de esta Historia, Ustedes, los jvenes, cmo deben comportarse en la vida? 4. Por qu debemos estar agradecidos con los mayores? 5. Cmo debemos comportarnos con ellos? Pero tambin Cmo deben comportarse ellos con nosotros? 6. Qu valores aportamos los jvenes a la vida? 7. Resume en pocas lneas -3 4- la enseanza que se desprende de esta Historia. 8. En el Libro de las Tierras Vrgenes del britnico Kipling, aparece este escrito atribuido a Baloo, el Oso, refirindose especficamente a los lobos jvenes: No hay nadie como yo!, dice el cachorro, cuando derriba la primera pieza; pero grande es la selva y EL es pequeo; djale que piense en calma, que ahora empieza.
Hana writes the equation y=5.5x+11 if she buys 8 books what is the amount spent if she buys 8 books.
a visual metaphor is effective
Help me atlest :) cause
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[tex]21\geq 12+x[/tex]
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Find X. This is a 40, 40, 90 triangle.
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We argue about the price of pomegranates, I convince him it is the fruit of scholars. What does scholars mean?
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