This diagram shows two different forces acting on a skateboarder. The
combined mass of the skateboard and the person is 65.2 kg. Based on this
information, what is the acceleration of the skateboarder?
Air resistance = 55.20 N
Applied force = 31.80
si
A. 0.36 m/s2 to the left
B. 1.46 m/s2 to the left
C. 0.36 m/s2 to the right
D. 1.47m/s2 to the right​

Answer:

The process of soil formation generally involves the downward movement of clay, water, and dissolved ions, and a common result of that is the development of chemically and texturally different layers known as soil horizons. The typically developed soil horizons, as illustrated in Figure 5.16, are: O — the layer of organic matter A — the layer of partially decayed organic matter mixed with mineral material E— the eluviated (leached) layer from which some of the clay and iron

Explanation:

i'm built different

Answer:

5732 years

Explanation:

hope it helps, if not im sorry

The sample of fossilized wood is 22920 years old.

The half life is the time required for a substance to decay to half of its initial value. It is given by:

[tex]N=N_o(\frac{1}{2} )^\frac{t}{t_\frac{1}{2} }[/tex]

Where N is the final value of the substance, No is the initial value of the substance, t is the time and [tex]t_\frac{1}{2}[/tex] is the half life.

Given a half live of 5730 years, N = 1.5g, No = 24g. Hence:

[tex]1.5=24(0.5)^\frac{t}{5730} \\\\1/16=(0.5)^\frac{t}{5730} \\\\ln(1/16)=\frac{t}{5730} ln(0.5)\\\\t=22920\ years[/tex]

Therefore the sample is 22920 years old.

Find out more at: https://brainly.com/question/4483570

⚠WARNING DO NOT JOIN THE ZOOM OF 825 338 1513⚠ OR DO NOT JOIN ANY ZOOMS FROM ANYONE EXCEPT REAL LIFE FRIENDS OR FRIENDS FAMILY OR TEACHERS! HIS ZOOM NAME IS Mysterious Men HE ASKS GIRLS TO DO INAPPROPRIATE THINGS PLS COPY AND PASTE THIS TO OTHER COMMENT SECTIONS! PLS PASS THIS AROUND

Answer:

A

Explanation:

Answer:

It is 10 m/s

Explanation:

Answer:

y has to be a liquid and x would be a gas

Explanation:

the closer two molecules are, greater is the force of attraction which makes them stick together and give it a structure

here y has lesser intermolecular distance so it is a liquid

particles will collide in gas though as

liquid particles have constant motion

Answer:

the keys will make it back to John.

Explanation:

In order to find out if the keys will reach John or not, we can use the formula of projectile motion to find the maximum height reached by the keys:

H = V²Sin²θ/2g

where,

V = Launch Speed = 18 m/s

θ = Launch Angle = 40°

g = 9.8 m/s²

Therefore,

H = (18 m/s)²[Sin 40°]²/(2)(9.8 m/s²)

H = 6.83 m

Hence, the maximum height that can be reached by the projectile or the keys is greater than the height of John's Balcony(5.33 m).

Therefore, the keys will make it back to John.

Yes, Key will surely reach back to John.

Given that;

Velocity v = 18 m/s

θ Angle = 40°

g = 9.8 m/s²

Computation:

By using maximum height formula

H = [v²][sin²θ]/2g

H = (18)²[Sin 40°]²/[(2)(9.8)]  

H = 6.83 m

6.83 meter is more then 5.33 meter,

So,

Key will surely reach back to John.

Learn more:

https://brainly.com/question/10726356?referrer=searchResults

Answer:

A sea breeze describes a wind that blows from the ocean inland towards land. ... However, water heats up much more slowly than land and so the air above the land will be warmer compared to the air over the ocean. The warm air over the land will rise throughout the day, causing low pressure at the surface.

Explanation:

This should be right!

Answer:

r = 424.4 miles

Explanation:

If we consider the distance between the two locations A and B as the arc of a circle with the central angle given the difference between the viewing angles. Then, the distance between meteor and the locations, will be given as the radius of this arc. So, we will use the following formula to find this distance:

s = rθ

r = s/θ

where,

r = distance between observer and meteor = ?

s = distance between location A and location B = 8000 miles

θ = difference in viewing angles = (6°)(π rad/1°) = 6π rad

Therefore,

r = 8000 miles/6π rad

r = 424.4 miles

Answer:

9.75 km

Explanation:

Charlie runs 6.5 km/hr

-> Charlie wants to run for 1.5 hours

6.5km + 6.5km/2

= 6.5 km + 3.25km

= 9.75 km

Answer:

Yes

Explanation:

Just as motion in two dimensions introduced vectors, forces in two dimensions also involve more involved issues. 

Answer:

Dominant genes are genes that are most likely to be adapted to offspring. Recessive genes are genes that are least likely to be adapted to offspring. For example, if the father had brown eyes and the mother had green eyes, their offspring will most likely have brown eyes because brown eyes are considered dominant and more likely to happen.

Explanation:

not my answer i dont take credit

Answer:

C-Mass

Explanation:

Answer:

Please find the answer in the explanation.

Explanation:

How should the student change the circuit to give negative values for current and potential difference?

Positive and Negative current can be seen when charging and discharging a device or when powering a load.

Negative current can also be achieved when current is allowed to flow in other direction.

If the direction of the current is changed, the voltage will read negative. Changing of power or battery terminals can make voltmetre to read negative.

The student can reverse the direction of current flow in a circuit to obtain the negative values for current and potential difference in the circuit.

To determine the negative current flow and potential difference in a circuit, we can consider following ways;

Thus, the negative values of current and potential difference is obtained by reversing the direction of current flow in a circuit.

Learn more about current and potential difference here:

https://brainly.com/question/10254698?referrer=searchResults

Answer:

We can define power as:

P = W/t

where W is work, and t is time.

And the work needed to climb a distance (we can assume that climb a set of stairs is equivalent to climbing a given height) is:

W = g*h*m

Where:

g = gravitational acceleration

h = height climbed

m = mass.

g and h are the same for Juan and his sister, and the only thing that changes is the mass

The work for Juan is:

Wj = g*h*M

And for his sister, that has half his

Wa = g*h*M/2.

Then the power for Juan, is:

Pj = Wj/t1 = (g*h*M)/t1

Where t1 is the time that Juan needs to climb the stairs.

And for Anna is:

Pa = Wa/t2 = (g*h*M/2)/t2

Where t2 is the time that Anna needs to climb the stairs:

We know that they have the same power, then:

Pj = Pa

(g*h*M)/t1 = (g*h*M/2)/t2

M/t1 = M/2*t2

t1 = 2*t2

This means that the time in which Juan climbs the stairs is twice the time that Anna needs to climb the stairs.

The location in this diagram do the magnetic field lines show that the magnetic field is strongest is in C and wekeness in D.

The lines representing the magnetic field are closed, that is, they have no beginning or end. This can be observed when we place iron filings on a sheet of paper, over a bar magnet: the pattern of lines formed continues on the part of the paper that is on the magnet, closing.

In the region of the poles we see that the lines of magnetic induction are closer to each other, therefore, we consider that close to the poles the magnetic field is more intense. In this case it is stronger in C and weaker in D.

See more about magnetic field at brainly.com/question/14848188

#SPJ2

Answer:

The strongest is C

Explanation:

Just took the test and got it right, I don't need to over-explain it

Answer:

changes in genes

Explanation:

The correct answer would be changes in genes.

Variation refers to differences among living organisms of the same species. Variation in a population can be from 3 sources:

A mutation refers to a sudden change in the DNA sequence of a gene. When a gene changes, new alleles are introduced into the gene pool and this creates variation within the population.

Recombination of genes arises from random mating/fertilization during sexual reproduction. Gamete formation results in gene recombination.

Genetic drifts refer to the changes to the alleles of the gene pool as a result of chance events. These changes further introduce variation into the population.

Hence, the correct answer among the options is changes in genes, also known as mutation.

Answer:

Yes labor is required therefor jobs like cashier, and other low skill labor jobs I'll not be required

Explanation:

Answer:

The handrails must be approximately 10.63 meters long

Explanation:

The given parameters are;

The height of the bleachers, h = 8 m

The depth of the bleachers, d = 7 m

The length of the hand rails to go along the bleachers from bottom to top is given by Pythagoras' Theorem as follows;

The length of the hand rail = √(d² + h²)

∴ The length of the hand rail = √(7² + 8²) = √113 ≈ 10.63

In order for the handrails to go along the bleachers from top to bottom, they must be approximately 10.63 meters long.

Answer:

force

Explanation:

i need the answer lol

Answer:

4. The Earth's umbra only covers a part of the Moon causing a circular shadow to pass across it.

Explanation:

i took the quiz

Answer:

100kPa

Explanation:

Given parameters:

Initial volume of gas  = 1L

Pressure  = 200kPa

Final volume  = 2L

Unknown:

Final pressure  =  

Solution:

According to Boyles's law "the volume of fixed mass of gas of a gas varies inversely as the pressure changes if temperature is constant".

  Mathematically;

            P₁V₁  = P₂V₂

P and V are volume and pressure

1 and 2 are initial and final states

  Insert the parameters and solve;

            200 x 1  = P₂ x 2

                 P₂  = 100kPa

Answer:

lemme see

Explanation:

Answer:

Reacting to heat/cold

Explanation:

When it is hot, you will sweat.

When it is cold, you will get warm.

c: hope i help u

Answer:

m = 100[gram]

Explanation:

In order to solve this problem, we must remember the definition of the density of matter, which is the relationship between mass and volume. The density can be calculated by means of the following formula.

[tex]Ro=m/V[/tex]

where:

Ro = density = 1 [gramm/cm³]

m = mass [gramm]

V = volume = 100 [cm³]

Now replacing:

[tex]m=Ro*V\\m=(1\frac{grm}{cm^{3} } )*100cm^{3} \\m=100[gram][/tex]

Answer:

motion and forces

heat

waves

gravity

math

electricity and magnetism

conversation of energy and momentum

1. The velocity decreases, and the kinetic energy decreases.

2. An increase in temperature difference between the inside and outside of the building.

3. The total kinetic energy remains the same.

4. 76,761 J

5. The energy loss must increase.

Temperature difference between the inside and outside of the building will increase the thermal flow. Option D is correct.

R- Value:

It is the measure of the efficiency of the material to resist the heat flow.  Higher the R-value, better will be insulation. It is between 1.5-7.

As  heat tend to move from higher temperature to lower temperature, when difference of temperature greater.

Therefore, temperature difference between the inside and outside of the building will increase the thermal flow.

To know more about Insulation of buildings,

https://brainly.com/question/11896585

Answer:

She should consume carbohydrates rich foods before going to jogging.

Explanation:

Rosa should consume carbohydrates before she goes on jogging. Consuming high amount of protein rich foods is not suitable before jogging. One can consume protein rich foods when she is on weight loss program. Rosa should consume less peanut butter and jelly sandwiches and should focus on consuming bread and similar rich carbohydrates foods.