Which of the following best describes the velocity of an object?
A B0 m/s
B 30 m east
C 30 m/s east
D 30 m/s2
Explain how you got the answer​

Answers

Answer 1

Answer:

27

Explanation:


Related Questions

A car travels east at a constant velocity. The net force on the car is:

Answers

F=ma
As velocity is constant, a=0
So, F=0

Hope this helps!

What is the mass of a crate if a net force of 12 N gives the crate an acceleration of 0.20 m/s2?

Answers

A :-) for this question , we should apply
F = ma
Given - F = 12 N
a = 0.20 m/s^2
Solution -
F = ma
12 = m x 0.20
m = 12 by 0.20
m = 60 kg

.:. The mass is 60 kg.

A 40.0-kg package on a the roller belt conveyor is moving at 0.600 m/s. What is
its kinetic energy? *
O 7.2 J
O 12 J
O 14.4 J
O 0J
O24J

Answers

Answer:

7.2 J

Explanation:

The kinetic energy of an object can be found by using the formula

[tex]k = \frac{1}{2} m {v}^{2} \\ [/tex]

m is the mass

v is the velocity

From the question we have

[tex]k = \frac{1}{2} \times 40 \times {0.6}^{2} \\ = 20 \times 0.36 \\ = 7.2[/tex]

We have the final answer as

7.2 J

Hope this helps you

Its A ! Hope this helped

why is thouching the live wire of an appliane when it is connecfed to the mains dangerous

Answers

Answer: The live wire is the most dangerous one, since it is at 230 V. it should never touch the earth wire (unless the insulation is between them, of course!), because this would make a complete circuit from your mains supply to the ground (earth). A shock or fire would be highly likely.

Explanation:

malnourishment is harmful during​

Answers

Answer:

People who are in good health at the beginning of a hunger strike "are usually at little risk of dying from malnutrition for at least six to eight weeks," the guidelines state. But people who are ill can die from malnutrition in as little as three weeks. Malnutrition during pregnancy can be quite harmful. Maternal malnutrition during pregnancy can affect the wellbeing and development of the baby. Malnutrition is when the baby and in this case, the mother do not receive adequate nourishment during pregnancy. It means the baby, in the mother’s womb does not get enough nutrients to grow.

Hope this helps!


What is the awnser to that question

Answers

The answers To your question is c
Should be C cuz think about it, if you are in a bus and there is a person to the right of you it looks like he’s moving in the opposite direction of the bus at the soles of the bus

a person has gotten a new job with a much higher salary. he plans to spend his extra money on a new car and a great stereo system for his apartment.

Answers

Answer:

He will get a higher sales and income tax

Explanation:

just took the quiz and got it right

The person with a new job of a much higher salary and a new car and a great stereo system for his apartment, will attract more tax.

Effect of tax on higher salaries and properties

PAYE which is an acronym for pay as you earn,  is a form of tax deducted by an employer from the employee's salaries and wages.

As the person earns higher, his income tax increases, as he acquires more luxury properties, his personal tax increases as well.

Thus, the person with a new job of a much higher salary and a new car and a great stereo system for his apartment, will attract more tax.

Learn more about taxes here: https://brainly.com/question/1775528

#SPJ2

Hee Sun drew an electron dot diagram of a silicon atom as shown.

S i with 1 dot each above, right, below, left.

In addition to changing the symbol to C, how would this diagram compare with an electron dot diagram of a carbon atom (C)?

The dot to the left of the symbol would be removed in the diagram for carbon.
The same number of dots would appear in the diagram for carbon.
There would be two dots above and to the right of the symbol in the diagram for carbon.
The single dots would be replaced with two dots on each side of the symbol in the diagram for carbon.

Answers

Answer:

B

Explanation:

I took the test uwu

Answer:

B. The same number of dots would appear in the diagram for carbon.

Explanation:

took the test and got 100%  

The voltage between two points in a circuit is 4.2 V. If the resistance between
the points is 72, what is the current, according to Ohm's law?
A. 0.058 A
B. 76.2 A
O C. 17.1 A
O D. 302 A

Answers

Answer:

I = 0.058 [A]

Explanation:

Ohm's law is defined as voltage equal to the product of current by resistance.

[tex]V =I*R[/tex]

where:

V = voltage = 4.2 [V]

I = current [amp]

R = resistivity = 72 [ohm]

Now clearing I, we have:

[tex]I = V/R\\I = 4.2/72\\I = 0.058 [A][/tex]

Answer:

A. 0.058 A

Explanation:

The velocity of a mass moving in a circular path is..

Answers

Constantly changing.

Explain how scientist learned about the magnetic poles of the Earth.

Answers

Answer:

there are many way but this may help

Explanation:

The tendency of a magnet to align itself in a north-south direction, so giving a magnetic compass, was discovered by the Chinese about 2000 years ago. Then in 1600 William Gilbert published De Magnete, in which he concluded that the earth behaved as a giant magnet. ...


A man has a mass of 85 kg. What is his weight?

Answers

he weights 187.393 pounds

Answer:833N

Explanation: A. P. E. X.

3. Riddle:
I am black when you buy me, red when you use me and grey when you throw me away.
What am I?

Answers

Answer:

The answer is charcoal

Answer:

Charcoal

Explanation:

What causes wind?
A
The sun stops the wind throughout the afternoon as everything warms up.
B
The sun causes waves to be larger by directing solar energy into the water.
C
The sun heats land quickly and as the warm air rises, cool air comes in to take it place.
D
The sun reflects off the water, making the air above the water unstable and more likely to move.

Answers

Answer:C

Explanation:

The sun heats land quickly and as the warm air rises, cool air comes in to take it place.

Answer:

C

Explanation:

How are electrons involved in the formation of a bond between atoms?

Answers

Answer:

5

Explanation:

electrons can be more than det

Which is an example of negative acceleration?

Answers

A graph that starts from the top left decreasing to the bottom right

Explain you own words why energy is considered to be naturals money. Give an example to support your explanation

Answers

Answer:

because we naturally use energy everyday in everyway , energy is also a bill for instance you electric bill used by energy

Explanation:


A 1 kg puck sliding on a horizontal shuffleboard court is slowed to rest by 1 point
a frictional force of 3 N. What is the coefficient of kinetic friction between
the puck and the surface of the shuffleboard court? *
O A. 0.25
O B.0.5
O c.0.15
D. .31

Answers

Answer:

miu = 0.31

Explanation:

The friction force is defined as the product of the normal force by the coefficient of friction.

[tex]f=miu*N[/tex]

where:

f = friction force = 3 [N]

miu = friction coefficient

N = normal force [N]

The normal force on a horizontal surface can be calculated by means of the product of mass by gravity.

where:

m = mass = 1 [kg]

g = gravity acceleration = 9.81 [m/s²]

[tex]N=m*g\\N=1*9.81[/tex]

[tex]N= 9,81 [N][/tex]

Now replacing in the equation above, we can find the friction coefficient.

[tex]miu=3/9.81\\miu = 0.31[/tex]

When electrons are moving freely between many positive ions, what type of bond is occuring?

a
metallic
b
ionic
c
covalent
d
crystalline

Answers

Answer:

a metallic

Explanation:

Metal atoms are joined together by metallic bonds. Metals can form cations (positive ions) with a sea of delocalized electrons.

Describe the effect of speed on voltage

Answers

Answer:

Speed has no effect on voltage.

Explanation:

The voltage of the battery in your car is always 12 to 13.5 volts. It makes no difference whether the car is home in the garage or zooming down the interstate.

What wavelength would a ripple in water have if the frequency is 1.8 Hz and a
wave speed of 825 m/s?

Answers

Explanation:

825m/s / 1.8Hz = 458.33m

λ=v/f

λ-wavelength

v-speed

f-frequency

λ=825/1.8=458.33m

Select the correct answer.
Which two factors does the power of a machine depend on?
Α. work and distance
B. force and distance
C. work and time
D. time and distance

Answers

Answer: C. work and time

Explanation: hope this helps

Which of the following is an example of the Doppler effect? (2 points)
A. A water bug on the surface of a pond is producing small ripples in the water. The bug is not moving
B. A police car with its siren on is driving towards you, and you perceive the pitch of the siren to increase.
C. Scientists measure the speed of light and find that it is constant.
D. The gravitational pull of two objects on each other

Answers

Answer: B

Explanation:

Your'e asking about how waves get closer and louder A it isn't moving so no, C it's not saying if it's near or not and D is going trough another procedure so that leaves B behind

A 0.152 kg ball is attached to a string that is 62.2 cm long. The string will break if subjected to a tension force of 4.8 N. If a small child swings the ball in a horizontal circle around her head, at what velocity will the string break?

Answers

Answer:

The value is  [tex]v = 3.68 \ m/s[/tex]

Explanation:

From the question we are told that

   The mass the ball is  [tex]m = 0.152 \ kg[/tex]

    The length of the string is [tex]l = 62.2 \ cm = 0.622 \ m[/tex]

      The tension of force that will break the string is [tex]T = 4.8 \ N[/tex]

Generally the radius of the circle made by swinging the  string is  [tex]r = l = 0.622\ m[/tex]

     Generally the centripetal force acting on the ball is mathematically represented as  

              [tex]F_c = \frac{mv^2}{r}[/tex]

Generally this centripetal force is mathematically represented as

          [tex]F_c = T - mg[/tex]

=>       [tex]T - mg = \frac{mv^2}{r}[/tex]

=>      [tex]4.8 - 0.152 * 9.8 = \frac{0.152 * v^2}{0.622}[/tex]

=>      [tex]v = 3.68 \ m/s[/tex]

Studying neutrinos helped to explain how our Sun works but led to changes in theories of particle physics, how is this process consistent with the scientific process? How can details about a theory be adjusted without undermining other discoveries made through the theory's predictions?

Answers

Explanation:

Yes,  evidently, the process is consistent with the scientific process because in scientific process falsification and modification are two very important traits. So this new concept have modified the existing theories.

Through the modification a theory is adjusted without undermining other discovering made through the theory's prediction.

There are many other evidences that prove this fact for example Einstien's Theory of relativity also changes the existing concepts.

A car travels 14 km due west, then does a
U-turn, and travels 43 km due west.
I. What total distance has the car
traveled?
II.
What is the total displacement of the
car?
III. If the entire trip took 3.20 hours.
determine the average speed of the
car. Give
your answer in both
km hour, and m s. (show
conversion)
IV. If the entire trip took 2.50 hours.
determine the average velocity of
the car. Give your answer in both
km h, and mph (show conversion)

Answers

Explanation:

It is given that,

A car travels 14 km due west, then does a U-turn and travels 43 km due east (when it takes U-turn, it will change direction from west to east)

i. Total distance = total path covered

= 14 km + 43 km

= 57 km

ii. Let east is positive and west is negative.

Displacement = final position-initial position

= 43-14

= 29 km

iii. If time taken in the entire trip = 3.2 hours

Average speed = distance/time

[tex]s=\dfrac{57\ km}{3.2\ h}\\\\=17.81\ km/h[/tex]

1 km/h = 0.2777 m/s

17.81 km/h = 4.94 m/s

iv. If time taken in the entire trip = 2.5 hours

Average velocity = displacement/time

[tex]v=\dfrac{29\ km}{2.5\ h}\\\\=11.6\ km/h[/tex]

1 km/h = 0.621 mph

11.6 km/h = 7.2 mph

Henc, this is the required solution.

please help !!!!! I’ll give brainliest !

Answers

Answer:

Honestly for me it's a bit too blurry. Sorry luv.:(

Explanation:

the strongly blown ballon gets blasted why?

Answers

Answer:

Because of pressure.

Thanks

Explanation:

The pressure bursts out the balloo

When you blow up a balloon, you force extra air into it, creating higher air pressure inside the balloon than outside of it. Given the chance, the air molecules will move to a lower-pressure environment—which is why, if you let go of a balloon's opening without tying it off, air you added will rush out again

an object increases its velocity from 22 m/s to 36 m/s in 5s.what is the acceleration of the object

Answers

Answer:

2.8 m/s²

Explanation:

v=v0+at <=> 36 = 22 + a×5 <=> 5a = 36-22 <=> 5a = 14 <=> a = 14/5 <=>

<=> a = 2.8 m/s²

A :-) for this question , we should apply
a = v - u by t
Given - u = 22 m/s
v = 36 m/s
t = 5 sec
Solution -
a = v - u by t
a = 36 - 22 by 5
a = 14 by 5
a = 2.8 m/s^2

.:. The acceleration is 2.8 m/s^2.

shower thoughts...
if two people on each side of the world drop a piece of bread, the earth briefly becomes a sandwich....

Answers

Answer:

in your mind yes but the bread is smaller than the earth thus it wouldnt turn the earth into a sandwich.

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