Best Answer gets Brainiest
Draw the (Quantitative) velocity vs time graphs for an object whose motion produced the position vs time graphs in the graphs below. Show your work.

It's called a "lodestone".

If it's suspended and allowed to turn freely, it behaves like a magnetic compass.

Answer:

a= -12.64 m/s²

The negative sign means deceleration, which shows that the limousine was slowing down to stop.

Explanation:

The formula for acceleration is :

a= change in velocity / time

[tex]a=v_f-v_i/t\\[/tex]

where;

[tex]v_f=0km/h\\\\v_i=55km/h\\\\t=4.352s[/tex]

a= 0-55 /4.352 = -55/4.352 = -12.64 m/s²

The negative sign means deceleration, which shows that the limousine was slowing down to stop.

Answer:

1. mass = 4

2. mass = 6

3. mass = 0.28

Explanation:

All these questions require the equation:

                           F=ma

Where F is force, m is mass and a is accleration. If we do some algebra, we can modify this equation to find mass by dividing both sides by a.

[tex]F=ma --> \frac{F}{a} =\frac{ma}{a} --> \frac{F}{a} = m[/tex]

The a on the left side cancels out and leaves us with [tex]\frac{F}{a}=m[/tex]. Now we can plug in the numbers given to find the mass.

1.[tex]\frac{F}{a} =m-->\frac{20.0}{5.0}=m-->m=4[/tex]

2.[tex]\frac{F}{a} =m -->\frac{12.0}{2.0} =m -->m=6[/tex]

3.[tex]\frac{F}{a}=m--> \frac{4.6}{16.3}=m--> m=0.28[/tex]

So the answers are m=4, m=6, and m=0.28.

Answer:

Explanation:

velocity=frequency*wavelength

velocity = 2.99*10^8 m/s

frequency = ?

wavelength = 3.012*10^-12

2.99*10^8m/s = (f)(3.012*10^-12)

f=9.58*10^19 Hertz    

Explanation:

the boy ran 15m 3x5 is 15

Answer:

The answer is 15m

Explanation:

[tex]v = \frac{l}{t} \\ l = vt = 3 \times 5 = 15[/tex]

Answer:

2N₂(g) + 2O₂(g) ----> 2NO(g)

Explanation:

Gaseous nitrogen and gaseous oxygen reacts in a molar volume ratio of 1 : 1 to produce nitrogen (ii) oxide.

In the reaction, two molecules of nitrogen gas combines with two molecules of oxygen gas in the cylinder to form two molecules of nitrogen (ii) oxide. The equation of the reaction is given below:

2N₂(g) + 2O₂(g) ----> 2NO(g)

Nitrogen (ii) oxide is formed naturally during lightning bolts. The heat released the lightning flashes causes the nitrogen and oxygen in air to combine to form nitrogen (ii) oxide. The nitrogen (ii) oxide formed however, quickly reacts with more oxygen to form nitrogen(ii) oxide.

Nitrogen (ii) oxide is a colorless, poisonous gas. It is slightly denser than air and almost insoluble in water. it is also neutral to litmus.

The balanced chemical equation for the reaction between nitrogen and oxygen is:

2N₂(g) + 2O₂(g) —> 4NO(g)

The equation between nitrogen and oxygen can be written as follow:

N₂(g) + O₂(g) —> NO(g)

The above equation can be balance as illustrated below:

There are 2 atoms of O on the left side and 1 atom on the right side. It can be balance by writing 2 before NO as shown below:

N₂(g) + O₂(g) —> 2NO(g)

Multiply the equation by 2, we have:

The equation is balanced!

Learn more: https://brainly.com/question/2399130

Answer: 7.20 m

Explanation:

The mass of acetic acid would be 9.435 grams, in 185 mL of vinegar if Vinegar contains 5.00% acetic acid (by mass) and its density is 1.02g / mL

It can be defined as the mass of any object or body per unit volume of the particular object or body. Generally, it is expressed as in gram per cm³ or kilogram per meter³.

Generally, the density of any substance is expressed by the greek symbol ρ. The density is the reciprocal of the specific volume of any substance.

.

By using the above formula for density

ρ = mass / volume

As given in the problem Vinegar contains 5.00% acetic acid (by mass) and its density is 1.02g / mL

The total mass of the vinegar

mass= ρ×volume

       =1.02×185

       =188.7

As given Vinegar contains 5.00% acetic acid (by mass)

the mass of acetic acid = 5×188.7/100

                                       =9.435 gram

Thus, the mass of acetic acid comes out to be 9.435 grams

Learn more about density from here

brainly.com/question/15164682

#SPJ2

Answer:

Net acceleration = 3.5m/s²

Explanation:

Given the following data;

Mass, m = 40kg

Normal force, Fn = 400N

Applied force, Fapp = 195N

Force of friction, Ff = 55N

Mathematically, the net force is given by the formula;

[tex] F_{net} = F_{app} - F_{f}[/tex]

Substituting into the equation, we have;

[tex] F_{net} = 195 - 55 [/tex]

[tex] F_{net} = 140 [/tex]

To find the acceleration;

[tex] F_{net} = ma[/tex]

Making acceleration "a" the subject of formula;

[tex]a = \frac {F_{net}}{m} [/tex]

[tex]a = \frac {140}{40} [/tex]

Net acceleration, a = 3.5m/s²

Answer:

Time and velocity

Explanation:

The time taken for the velocity to double is very important to find the amount of acceleration the car acquires.

Acceleration is the rate of change of velocity with time.

  Acceleration  = [tex]\frac{v -u}{t}[/tex]

v is the initial velocity

u is the final velocity

t is the time taken

 So, the velocity and time is needed to calculate the value of the acceleration the car undergoes.

Answer:

B

Explanation:

The symbol of the magnetic field is given as B.

The magnetic field is a force field.

Answer:

C) an object that moves at constant velocity.

Explanation:

It is equilibrium because acceleration is just the speed and force at the beginning, while velocity is the overall speed that has remained constant throughout the cycle of the object's movement.

Answer:

true

Explanation:

or they will die to death

the answer is true. they also need oxygen

Answer:I think it b

Explanation:

The correct answer is option (a) Biofuels can have a more widespread use.

Biofuel is a fuel that is produced from biological process like anaerobic and agriculture digestion. It can be derived directly from plants, agricultural, commercial, domestic and agricultural waste. It has a more widespread use as compared to solar, wind and geothermal energy. Uses of biofuel.

Hope this helped

Answer:

The tension of the rope is 1152 N

Explanation:

Force

Newton's second law states that the acceleration of an object is directly proportional to the net force and inversely related to its mass.

The law can be written as:

F = m.a

The rope must apply a force F to accelerate the car of m=960 Kg at [tex]a=1.2~ m/s^2[/tex]. Given the track is frictionless, all the force applied produces acceleration, thus:

[tex]F = 960~Kg\cdot 1.2~ m/s^2[/tex]

F = 1152 N

The tension of the rope is 1152 N

Answer: D: Chloroplasts

Explanation:

Answer: d

Explanation:

Answer:

lava plateau-material fills in valleys

caldera goes-bowl shaped depression

volcanic soil-rich in nutrients

shield volcano-wide summit, gentle slope

cinder cone-made of pieces of lava

Explanation:

Answer:

Explanation:

The student walks;

       5 blocks west;

       5 blocks north

       6 blocks east

       5 blocks south

Now, distance is sum of all the length of the path covered.

 Distance  = 5 blocks + 5 blocks + 6 blocks + 5 blocks = 21 blocks

The total distance travel by the student is 21 blocks.

Answer:

what are the options??? to choose the answer from?

Explanation:

Answer:

so its 0.098*C

Explanation:

Let m gram be the mass of water.

Then potential energy of water is:

P.E.=mgh

=m×980×8400

Since potential energy is converted to kinetic energy

P.E.=K.E.

K.E.=m×980×8400

Half of kinetic energy is converted into heat.

Then  heat energy:

Heat energy=

2

1

​

×m×980×8400

Convert joule into calories

heat=

4.2×10

7

m×980×4200

​

=m×0.098

But heat is:

Heat=msΔT

∴msΔT=m×0.098

m×1×ΔT=m×0.098

ΔT=0.098C

Rise in temperature of water is =0.098

∘

C .

Answer:

[tex]\boxed {\boxed {\sf True}}[/tex]

Explanation:

The Law of Conservation of Mass states that mass cannot be created or destroyed.

So, in a chemical reaction, the mass before a reaction and after cannot be different. In other words, the mass of the products must be equal to the product of the reactants.

So, this is a true statement.

Answer:

hope this helps.

Explanation:

______

Answer:

79.38 J

Explanation:

W = mgz = 4.5*9.8*1.8 (with g = 9.8 m/s^2)

= 79.38 K

Answer:

D (maybe)

Explanation:

I have this question too but I think it might be D just let me check

Edit: no it wasn't D sorry

hope this helps.........

Answer:

imma take a guess

Explanation:

- For every force exerted on an object, that object exerts the equal and opposite amount of force back.

or like

- The force exerted is an action, and there will always be a force back, the reaction, in an equal and opposite amount.

Answer:

electrical energy change into heat and light energy.

Answer:

the limbic system has its input and processing side (the limbic cortex, amygdala and hippocampus) and an output side (the septal nuclei and hypothalamus).

Explanation:

hope it helps

Answer:

limbic system

Explanation:

The "limbic system" is situated under the cerebrum. It is responsible for the person's emotions and memories. Its primary structures include: hippocampus, amygdala, thalamus and hypothalamus.

The "hippocampus" is responsible for obtaining new memories. It is also associated with mental functions like "learning."

The "amygdala" is responsible for emotional memories.

The "thalamus" and "hypothalamus" are responsible for reactions towards the emotions.