A 30 kg mass sits on a level surface with a coefficient of friction of .2. What net force is necessary to accelerate it
at 3 m/s2?

Answers

Answer 1

Answer:

Explanation:

Idk


Related Questions

An object accelerates from rest to a velocity of 34 m/s
over a distance of 70 m. What was its acceleration?

Answers

Answer:

6.8m/s²

Explanation:

Given parameters:

Initial velocity = 0m/s

Final velocity  = 34m/s

Distance  = 70m

Unknown:

To solve this problem we apply one of the motion equations;

     V²   = U² + 2aS

where V is the final velocity

           U is the initial velocity

           a is the acceleration

         S is the distance covered

Input the parameters and solve;

   34² = 0² + 2 x a x 70

  34² = 140a

   a  = 6.8m/s²

How fast would an inline skater have been traveling if he had covered 400 m in 10
seconds?

Answers

Answer:

The answer is 40 m/s

Explanation:

The speed or velocity of an object given it's distance and time taken can be found by using the formula

[tex]v = \frac{d}{t} \\ [/tex]

From the question we have

[tex]v = \frac{400}{10} \\ [/tex]

We have the final answer as

40 m/s

Hope this helps you

a phosphorus atom needs to gain ---electrons to achieve a full octet

Answers

Answer:

Three (3).

Explanation:

The octet rule is a rule in chemistry that states that, chemical elements would either gain or loss electrons in their outermost shell in order to attain a stable electronic configuration i.e having eight (8) valence electrons in their outermost shell such as chemical elements found in group 8 (2-8-8) known as noble gas.

A phosphorus atom needs to gain three (3) electrons to achieve a full octet because the atomic number of phosphorus is 15 and as such it has the electronic configuration of 2-8-5 and needs three electron in order to become a stable element.

A Punnett square is used to determine the *

Answers

Answer:

predict the genotypes of a particular cross or breeding experiment

Explanation:

Answer:

A.

Explanation:

A constant net force acts on an object. Describe the motion of the object
a) constant acceleration
B) constant speed
C) constant velocity
D) increasing acceleration

Answers

Answer:

C)constant velocity

Explanation:

it is probably corrected

What acceleration will all objects experience during their flights through the air (on Earth)?

Answers

Answer:

d

Explanation:

Answer:

9.8 m/s/s

Explanation:

As such, all objects free fall at the same rate regardless of their mass. Because the 9.8 N/kg gravitational field at Earth's surface causes a 9.8 m/s/s acceleration of any object placed there, we often call this ratio the acceleration of gravity

Can you help me on this? it is a phyisical science question.

Answers

Answer:

Electron

Explanation:

Two particles are separated by 0.38 m and have charges of -6.25 x 10-°C
and 2.91 x 10-°C. Use Coulomb's law to predict the force between the
particles if the distance is cut in half. The equation for Coulomb's law is
Fe = kqu92, and the constant, k, equals 9.00 x 109 Nm2/C2
A. 1.13 x 10-6N
B. 4.53 x 10-6N
C. -1.13 x 10-6N
D. -4.53 x 10-6N

Answers

Answer:

-4.53 X 10-6N

Explanation:

apex

what is 1/2 / 1/4. Please help am getting two answers.idk the correct one.​

Answers

Answer:

2

hope this helps :)

Arrange the following events in the mantle convection process. Use numbers 1-5.
a. Lithospheric plates move in the asthenosphere due to rising and sinking of
materials.
b. The decomposition of radioactive elements causes heat in the interior part of
the Earth
c. Heat slowly rises to the mantle and creates convection current.
d. Heat moves to the core.
e. The process repeats as cycle.

Answers

Answer:

1) Lithospheric plates move in the asthenosphere due to rising and sinking of materials is 1.

2) The decomposition of radioactive elements causes heat in the interior part of the Earth

3) Heat slowly rises to the mantle and creates convection current.

4). Heat moves to the core

5) The process repeats as cycle.

Explanation:

Mantle convection is the gradual slow creeping of movement of the Earth's mantle which is as a result of convection current which transfer heat from the interior to the surface of the Earth .

The process of mantle convection start with

1. Lithospheric plates move in the asthenosphere due to rising and sinking of materials is and thus form the two component of the mantle.

2) The decomposition of radioactive elements causes heat in the interior part of the Earth. This is as a result of accretion which is associated to sea flooding

3) Heat slowly rises to the mantle and creates convection current.

4). Heat moves to the core, cools down by conduction and convection of heat.

5) The process repeats as cycle.

The proper and correct arrangement of events in the mantle convection process are:

1. The decomposition of radioactive elements causes heat in the interior part of  the Earth.

2. Heat moves to the core

3. Heat slowly rises to the mantle and creates convection current.

4. Lithospheric plates move in the asthenosphere due to rising and sinking of  materials.

5. The process repeats as a cycle.

Convection is considered to be one of the most efficient ways through which heat is transported from the interior of planet Earth to the surface.

Mantle convection can be defined as the very slow transfer of heat due to the movement of Earth's solid silicate material within the mantle.

Basically, the slow creeping of the mantle causes a transfer of heat from the white-hot core to the brittle lithosphere during mantle convection.

Furthermore, the heating of the mantle takes place from below (the core) and it rises upward in hotter regions while it sinks down in colder regions.

The proper and correct arrangement of events in the mantle convection process are:

1. Heat is caused in the interior part of  the Earth due to the decomposition or decay of radioactive elements.

2. Heat moves to the core.

3. Heat slowly rises from the Earth's core to the mantle and creates convection current in the asthenosphere, which is the plastic layer of the mantle.

4. Lithospheric plates move in the asthenosphere due to rising and sinking of  materials.

5. The process is then repeated as a cycle.

Read more: https://brainly.com/question/19545005

How much force does a 35 kg child have that is running through the house at an acceleration of 20 m/s^2?

Answers

Answer:

The answer is 700 N

Explanation:

The force acting on an object given it's mass and acceleration can be found by using the formula

force = mass × acceleration

From the question

mass = 35 kg

acceleration = 20 m/s²

We have

force = 35 × 20

We have the final answer as

700 N

Hope this helps you

Which value is NOT equivalent to the others?

Multiple choice question.

A)
5 × 1011 nm


B)
0.5 km


C)
500 m


D)
5000 cm

Answers

Answer:

A) 5 × 1011nm

I think It's A

kenneth warmed up a 100- ml sample of air in and expandable container. he displayed the resluts in the following graph. the resluts formed a straight line, so he extended the line the full length of the graph

Answers

Answer:

300,000

Explanation:

Megan is standing on a ladder picking apples in her grandfathers orchard. As she pulls each Apple off the tree, tosses it into a basket that sits on the ground 3.0m below at a horizontal distance of 2.0m from Megan. How fast must Megan throw the apples (horizontally) in order for them to land in the basket

Answers

Answer:

2 meters per second

Explanation:

At what point is the KINETIC ENERGY at its highest?

Answers

Answer:

An object has the MOST kinetic energy when it's movement is the GREATEST.

Explanation:

difinition of gravity

Answers

Answer:

it's all around you and it can't be destroyed

PLEASE HELP!!!
If the current in a wire is 2.0 amperes and the potential difference across the wire is 10.0 volts, what is the resistance of the wire?

Answers

cdshhxnehuchuceud jdje

helpppp please I'm really stuck on this question

Answers

Is this a test? If it is, i’m not allowed to help as i would be seen as a bad person! I hope you pass, god bless.

If a football player has a weight of 600 N on earth, what would his weight be on the moon?

Answers

Answer:

99n

Explanation:

How are representative democracies and direct democracies similar?


In both, elected officials meet to make laws.

The power lies with the people in both types of government.

Both types of government work well in countries with large populations.

In both, citizens often represent themselves in voting on government decisions.


BRAINLYIST IS THE REWARD

Answers

Answer:

The answer is Both types of government work well in countries with large populations.

Explanation:

Answer:

its d

Explanation:

what is the first step to CPR

Answers

Answer:

call for help and check if the person has not passed out (check their pulse.)

Explanation:

PLS HELP!!

Which correctly identifies a type of heat transfer shown in the figure above?
C = radiation
B = conduction
A = convection
A = radiation

Answers

Answer:

conduction

Explanation:

Metals are good conductors of heat .In the pic the thermal energy is conducted by the cooker and the food gets cooked.Option B is correct

Answer:

[tex] \sf B = conduction[/tex]

An airplane flies with a constant speed
of 720 km/h. How far can it travel in
3 hours

Answers

Answer:

2160 km/h

Explanation:

720 times 3 gives you the answer

What’s a meandering stream?

Answers

A meandering stream I think is a tall
A meandering stream has a single channel that winds snakelike through its valley, so that the distance 'as the stream flows' is greater than 'as the crow flies. ' As water flows around these curves, the outer edge of water is moving faster than the inner.

I
7. A person playing basketball changes what
energy, from food into what energy, and what energy as they sweat?

Answers

Answer:

I think food into chemical energy

Explanation:

this possibly could be wrong but I think it's right

Which of the following describes the mass of an object precisely ? *
2.34 kg
2.345 kg
2 kg
2.3 kg

Answers

Answer:

2.345 would be the most precious because you have more numbers to work with and exact numbers

Solve for the resultant displacement of the two vectors: A = 2.3 km at 45 degrees B = 4.8 km at 90 degrees

Answers

Answer:

The resultant of the vector is 6.63 km

Explanation:

Given;

vector A = 2.3 km 45°

vector B = 4.8 km 90°

The vectors in the x - direction is given by;

Aₓ = 2.3 km Cos 45° = 1.6263 km

Bₓ = 4.8 km Cos 90° = 0

The sum of the vectors in x -direction is given by;

∑X =  1.6263 km + 0 = 1.6263 km

The vectors in the y - direction is given by;

Ay = 2.3 km Sin 45 = 1.6263 km

By = 4.8 km Sin 90° = 4.8 km

The sum of the vectors in y -direction is given by;

∑Y =  1.6263 km + 4.8 km = 6.4263 km

The resultant vector is given by;

R = √(X² + Y²)

R = √[(1.6263)² + (6.4263)²]

R = 6.63 km

Therefore, the resultant of the vector is 6.63 km

The resultant displacement of the two vectors A and B is 6.63 Km and this can be determined by using the given data.

Given :

The two vectors: A = 2.3 km at 45 degrees B = 4.8 km at 90 degrees.

In order to determine the resultant displacement, first, determine the vector in x-direction:

[tex]\rm A_x=2.3cos45=1.6263 \;Km[/tex]

[tex]\rm B_x=4.8cos90=0 \;Km[/tex]

Now, the sum of the vectors is given by:

[tex]\rm \sum X=1.6263+0=1.6263\;Km[/tex]

In order to determine the resultant displacement, first, determine the vector in y-direction:

[tex]\rm A_y=2.3sin45=1.6263 \;Km[/tex]

[tex]\rm B_y=4.8sin90=4.8 \;Km[/tex]

Now, the sum of the vectors is given by:

[tex]\rm \sum Y = 1.6263+4.8=6.4263[/tex]

Now, the resultant vector is given by:

[tex]\rm R = \sqrt{X^2+Y^2}[/tex]

[tex]\rm R=\sqrt{(1.6263)^2+(6.4263)^2}[/tex]

R = 6.63 Km

The resultant displacement of the two vectors A and B is 6.63 Km.

For more information, refer to the link given below:

https://brainly.com/question/16380983

What is the current in the 30.0 o resistor?
2.00A
32.0A
4.00A
30.0A

Answers

Answer:

4.00 A

Explanation:

HEY can anyone tell me the Atomic Mass of Helium and also what ever the number u get pls round it!!

Answers

the atomic mass of helium is 4.002602 u

Answer:

Hey!

Your answer is that the ATOMIC MASS of Helium is 4 u ROUNDED to 2 decimal places!

Explanation:

The precise amount is 4.002602 u.

I HOPE THIS HELPED YOU! :D

What is the momentum of a 200 kg football player running west at a speed of 8m/s

Answers

Answer:

The answer is 1600 kgm/s

Explanation:

The momentum of an object can be found by using the formula

momentum = mass × velocity

From the question

mass = 200 kg

velocity / speed = 8m/s

We have

momentum = 200 × 8

We have the final answer as

1600 kgm/s

Hope this helps you

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