1
Suppose you ride a bicycle around the block, returning to your starting point.
At the end of your trip, your average velocity will be ..........
Positive
Negative
Zero

Answer:

[tex]\huge\boxed{\sf Time = 10 \ seconds}[/tex]

Explanation:

Given:

Initial Velocity = [tex]\sf V_{i}[/tex] = 8.0 m/s

Final Speed = [tex]\sf V_{f}[/tex] = 28.0 m/s

Acceleration = a = ?

Required:

Time = t = ?

Formula:

[tex]\sf a = \frac{V_{f} - V_{i}}{t}[/tex]

Solution:

[tex]\sf 2 = \frac{28-8}{t} \\\\2 = \frac{20}{t} \\\\t = \frac{20}{2} \\\\t = 10 \ seconds\\\\\rule[225]{225}{2}[/tex]

Hope this helped!

Answer:

x = 16 [m]

Explanation:

This problem can be solved using the following equation of kinematics.

[tex]v_{f}=v_{o}+a*t[/tex]

where:

Vf = final velocity [m/s]

Vo = initial velocity = 5 [m/s]

a = acceleration = 3 [m/s²]

t = time = 2 [s]

[tex]v_{f}=5+3*(2)\\v_{f}=11[m/s][/tex]

Now we can find the displacement using the following equation of kinematics.

[tex]v_{f}^{2} =v_{o}^{2} +2*a*x\\11^{2}=5^{2} +2*3*x\\96=6*x\\x=16[m][/tex]

Answer: C. The time taken for the light to travel would have been too little to have been  measured by them.

Explanation:

Light travels at a speed of 300,000 km per second which is much too fast for the naked eye to even comprehend. This is why light shinning in a distance is picked up instantaneously by out eyes.

This experiment done by Galileo would therefore be unable to measure the speed of light because the light from either lantern would have traveled too fast for Galileo to be able to measure the time taken.

Answer:

Mass wasting

Explanation:

Took the test

Answer:

Mass wasting

Explanation:

because

Answer:

Seatbelts

Explanation:

Resistance to change in motion. it presses tour body outside of the loop, keeping you inside the cart

A magnetic field forms around the wire. and The field is perpendicular to the direction of flow of the current.

A magnetic field is a visual representation of how the magnetic force is distributed around and inside of magnetic objects.

Most people are at least somewhat familiar with common magnetic items and are aware that there may be forces at work between them.

We are aware that magnets have two poles and that the attraction or repulsion between two magnets depends on how they are oriented (similar poles). We are aware that this occurs in a certain area that surrounds a magnet.

Therefore, A magnetic field forms around the wire. and The field is perpendicular to the direction of flow of the current.

To learn more about magnetic field, refer to the link:

https://brainly.com/question/15719243

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Answer: The volume of the gas at the increased pressure will decrease to 3.72L.

Explanation:

Boyle's law states that the volume occupied by a fixed mass of gas is inversely proportional to the pressure, provided temperature is kept constant. That is,

PV=K

P1V1 =P2V2

P1= 201 kpa

V1 = 6.2L

P2= 335kpa

V2= ?

Making V2 the subject of formula,

V2= P1V1/P2

V2= 201× 6.2/335

V2= 1246.2/336

V2= 3.72L

Thus, the volume of the gas decreases as the pressure increases. Hope this helps, thanks

Answer:

The volume will be 3.72 L.

Explanation:

We can find the new volume by using the Ideal Gas Law:

[tex] PV = nRT [/tex]

Where:

P: is the pressure

V: is the volume

n: is the number of moles

R: is the gas constant

T: is the temperature

Initially, we have:

[tex]P_{1}V_{1} = nRT[/tex]   (1)

with V₁ = 6.2 L, P₁ = 201 kPa and nRT = constant

When the pressure is increased we have:

[tex] P_{2}V_{2} = nRT [/tex]   (2)

with V₂ =?, P₂ = 335 kPa and nRT = constant

By equating (1) and (2) we have:

[tex] P_{1}V_{1} = P_{2}V_{2} [/tex]

[tex] V_{2} = \frac{P_{1}V_{1}}{P_{2}} = \frac{201 kPa*6.2 L}{335 kPa} = 3.72 L [/tex]

Therefore, the pressure is increased to 335 kPa the volume will be 3.72 L.

I hope it helps you!

Answer:

Explanation:

see image

Answer:

a = 0.1 [m/s²]

Explanation:

To solve this problem we must use the following equation of kinematics.

[tex]v_{f}=v_{o}+a*t[/tex]

Vf = final velocity = 0.8 [m/s]

Vo = initial velocity = 0.3 [m/s]

a = acceleration [m/s²]

t =  time = 5 [s]

[tex]0.8=0.3+a*t\\0.5 = 5*a\\a = 0.1 [m/s^{2}][/tex]

Answer:

C

Explanation:

During respiration, oxygen diffuses into the lung (carbon dioxide diffuses out), gets into the blood, and is transported around the body. The hemoglobin of the blood distributes the oxygen to the various cells and carbon dioxide from these cells diffuses into the blood. The blood travels back to the lung where the carbon dioxide is exchanged for oxygen once again. The carbon dioxide is eventually exhaled out of the nose.

The correct option is C.

Answer:

Explanation: local unit of mass is kilogram

Explanation:

u = 0.0m/s

t = 34s

a = 9.81m/s²

Using Kinematics,

s = ut + 0.5at²

= 0 + 0.5(9.81)(34)²

= 5,670.18m.

Explanation:

We know that for the plant;

         Tall is represented by T

         Short is represented t

Phenotypically, TT and Tt have the same expression.

The phenotype of an organism denotes the observable feature it possesses. Although determined by the genetic composition but the environment plays a very important role in its expression.

The genotype is the genetic make up of an organism. TT and Tt denotes the genes that occupy positions in the nucleus of the cell.

Both TT and Tt shows that the organism is tall. t is short and recessive.

Answer:

3200 Kg

Explanation:

Just apply the formula:

40.000 = 1/2 . m . 25

80.000 = 25m

m = 80.000/25

m = 3200 Kg

Answer:

It would move in a line tangent to the circular path

Explanation:

Answer: Carbon Dioxide.

Explanation: Oxygen and Carbon are both elements, so they can’t be compounds. Air is a mixture of gasses, not a compound.

Answer:

jsjsjsjsmkskskskksksks

Answer:

Fr = 150 [N]

a = 5 [m/s²]

Explanation:

In order to find the resulting force, we must assume that the thrust force is positive to the right, while the friction force is negative to the left.

[tex]F_{r}=200-50\\F_{r}=150[N][/tex]

Now Newton's Second Law tells us that the sum of the forces or the resulting force is equal to the product of mass by acceleration.

F = m*a

[tex]150 = 30*a\\a=150/30\\a = 5 [m/s^{2} ][/tex]

Answer:

huh

Explanation:

im so confused

Answer:

eevee

Explanation:

Answer:

Facilitated diffusion and active transport both utilize proteins to transport substances across membranes. Differences between active transport and facilitated diffusion 1. Active transport requires an input of energy, usually ATP, while facilitated transport does not.

Answer:

The distance the plane covered while it was accelerating is 80,633.3 m

Explanation:

Given;

initial velocity of the plane, u = 90 m/s

acceleration of the plane, a = 1.5 m/s²

final velocity of the plane, v = 500 m/s

The distance covered by the plane is given as;

v² = u² + 2ad

where;

d is the distance covered by the plane;

500² = 90² + 2(1.5)d

500²  - 90² = 3d

241900 = 3d

d = 241900 / 3

d = 80,633.3 m

Therefore, the distance the plane covered while it was accelerating is 80,633.3 m

Answer: C

Explanation: Air

Hope this helps! Brainlist Plz?

The following substances can be separated into several elements is the air because consisting of a mixture of several gases, such as nitrogen, oxygen, carbon dioxide and noble gases.

Atmospheric air is made up of a mixture of several gases, such as nitrogen, oxygen, carbon dioxide and noble gases. Oxygen and nitrogen are the most abundant gases, with the other gases being found in smaller amounts.

So the only element that we can separate into is air, because when performing the separation we find oxygen, nitrogen, carbon dioxide and noble gases.

See more about air at brainly.com/question/19368011

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Answer:

The 60 kg skater is traveling at 2.63 m/s in the opposite direction from the 45 kg skater.

Explanation:

The velocity of the 60 kg skater can be found by conservation of linear momentum:

[tex]P_{i} = P_{f}[/tex]

[tex]m_{a}v_{i_{a}} + m_{b}v_{i_{b}} = m_{a}v_{f_{a}} + m_{b}v_{f_{b}}[/tex]  (1)

Where:

[tex]m_{a}[/tex]: is the mass of the first skater = 45 kg        

[tex]m_{b}[/tex]: is the mass of the second skater = 60 kg        

[tex]v_{i_{a}}[/tex]: is the initial speed of the first skater = 0 (he is standing still)

[tex]v_{i_{b}}[/tex]: is the initial speed of the second skater = 0 (he is standing still)

[tex]v_{f_{a}}[/tex]: is the final speed of the first skater = 3.5 m/s

[tex]v_{f_{b}}[/tex]: is the final speed of the second skater =?

By replacing the above values into equation (1) and solving for [tex]v_{f_{b}}[/tex] we have:

[tex]0 = m_{a}v_{f_{a}} + m_{b}v_{f_{b}}[/tex]

[tex]v_{f_{b}} = \frac{-m_{a}v_{f_{a}}}{m_{b}} = \frac{-45 kg*3.5 m/s}{60 kg} = -2.63 m/s[/tex]

The minus sign is because the 60 kg skater is moving in the opposite direction from the other skater.

Therefore, the 60 kg skater is traveling at 2.63 m/s in the opposite direction from the 45 kg skater.

I hope it helps you!

Answer:

Explanation:idk

Answer:

The original source of all sand is rocks.

Hope I helped sorry if I didnt

Answer:

answer is rocks

Explanation:

It’s rocks because all sand it Little Rock’s that have been smashed into smaller pieces over the years and decade, and that’s how rivers go sand to because some of the broke down rocks would fall into the river and eventually be carried in the ocean and washed in shore. And that’s how we got beaches

Answer:

This question is incomplete, the question is asking which enzyme unwinds the DNA molecule during DNA replication.

The answer is DNA HELICASE

Explanation:

DNA replication is the process whereby DNA molecule (genetic material) is duplicated in the genome i.e. DNA makes an identical copy of itself. The process of DNA replication is carried out in a step by step manner with various enzymes functioning specifically throughout the process.

The first step is to unwind the double-stranded DNA molecule into two single strands. The two single strands serves a templates to synthesize another pairing strand to make two DNA molecules in total. The unwinding of the DNA strands is carried out by an enzyme called DNA helicase.

Answer:

A new copy of DNA is built from individual  

✔ nucleotides

.

The enzyme  

✔ helicase

unwinds the DNA molecule, allowing replication to begin.

Explanation:

Explanation:

R = V / I = 100V / 20A = 5 ohms.