Which is a limitation of using cellulose?
its lack of mass production
its lack of biodegradability
3
its harm to landfills
O its high cost to recycle

Answer:

Core samples are small portions of a formation taken from an existing well and used for geologic analysis. The sample is analyzed to determine porosity, permeability, fluid content, geologic age, and probable productivity of oil from the site. ... Core samples reveal the physical and chemical nature of the rock.

Answer:

because these units are derived from combinations of two or more of the seven base units

A material that produces magnetic field are called magnets. Magnetic poles refers to the ends of a magnet where the forces are strongest.

Magnetic poles are the regions at each end of a magnet where the external magnetic field is strongest.

A bar magnet suspended in the Earth's magnetic field orients itself north-south. A north magnetic pole is the north-seeking pole of such a magnet or any similar pole.

Thus, the correct option is D.

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Answer:

D magnetic poles-

Explanation:took test

Explanation:

Let yellow ball be m1 = 0.5kg with u1 = 8 m/s and blue ball be m2 = 0.25 kg with u2 = - 4 m /s respectively.

After collision, blue ball travels 12 m/s.

Using conservation of Linear Momentum :

m1u1 + m2u2 = m1v1 + m2v2

0.5* 8 + 0.25 * - 4 = 0.5 * v1 + 0.25 * 12

v1 = 0 m/sec i.e. Yellow ball comes to rest.

Answer: For the angles below 40, The air time and range are directly proportional meaning that if air time increases, the range increases. Like said earlier, the total traveled distance in the x-direction depends on the initial velocity and time.

First find the diameter of each.

Jupiter’s diameter is 86,881 mi.

Earth’s diameter is 7,917.5 mi.

Then divide those two.

Rounded, Jupiter is 11 times larger.

unrounded: 10.9732870224186927691821913482791285127

Finding out how large something is compared to something can be done by dividing.

For example I have two dogs. One dog is 3 feet tall. The other is 2 feet tall. How much taller is dog one? Dog one is 1.5 times larger because 3/2 = 1.5 AND 2 x 1.5 = 3.

So for this case multiplying Earth’s diameter by 10.9732870224186927691821913482791285127 will give you Jupiter’s diameter.

Answer:

Compasses are mainly used in navigation to find direction on the earth. This works because the Earth itself has a magnetic field which is similar to that of a bar magnet. The compass needle aligns with the Earth's magnetic field direction and points north-south. Also, In a magnet all the domains are oriented in the same direction. In the case of a nail, the domains can be aligned in the same direction causing the nail to become magnetic. That is because if you hang a bar magnet from a thread, the north pole will point to magnetic north. When you bring one north pole close to another north pole they repel each other. You can feel the two magnets pushing each other apart.

Answer:

The length is   [tex]D  =3 \  m  [/tex]

Explanation:

The  velocity of the bullet is mathematically evaluated as

      [tex]v  =  a * t [/tex]

=>   [tex]v  = 1.5 * 2 [/tex]

=>    [tex]v  = 3 \  m/s  [/tex]    

Now from kinematic equation

       [tex]v^2  =  u^2 + 2* a  *  D[/tex]

Here  D is the length of the barrel  and  u =  0 m/s

So

     [tex]3^2  =  0 + 2* 1.5  *  D[/tex]

     [tex]D  = \frac{9}{3} [/tex]

      [tex]D  =3 \  m  [/tex]

Answer:

B ) He was the first to systematically study force and motion.

Explanation:

I seen this one before and know the answer since there's 4 options

Answer:

controlled variable

Explanation:

here you go

A control variable refers to a variable that is not allowed to change during an experiment​.

A control variable or scientific constant can be described as an experimental element that is constant and unchanged throughout the course of the investigation in scientific experimentation.

Control variables can strongly affect experimental results where they are not held constant during the experiment in order to test the relative relationship between the dependent and independent variables.

A variable is held constant in order to assess the relationship between multiple variables in an experiment and is a control variable. A control variable is not changed throughout an experiment because its constant state allows the relationship between the other variables. A control variable is what is kept constant throughout the entire experiment.

Therefore,  a variable that is not allowed to change during an experiment​ is a controlled variable or scientific constant.

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Answer:

A hydraulic braking system transmits brake-pedal force to the wheel brakes through pressurized fluid.

Explanation:

Answer:

60 - 45 = A. 15

Explanation:

Subtracted because the plane mirror at an angle is incidence of 60°, so then in order to find the value it would be 60-45 and not adding it or dividing and multiplying to find the value thus the answer is 15.

60 - 45 = A. 15. Subtracted because the plane mirror at an angle is incidence of 60°, so then in order to find the value it would be 60-45 and not adding it or dividing and multiplying to find the value thus the answer is 15.

A flat or highly polished surface called a plane mirror reflects light or waves to create an image. It is a polished, smooth surface that creates a virtual representation of the actual object.

A plane mirror is a surface on which an image can only be produced by at least two light beams. The intersection of these two beams can occur inside the mirror or appear to occur somewhere behind the mirror.

The image that follows illustrates how an object appears when viewed via a plane mirror.

Therefore, 60 - 45 = A. 15. Subtracted because the plane mirror at an angle is incidence of 60°, so then in order to find the value it would be 60-45 and not adding it or dividing and multiplying to find the value thus the answer is 15.

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Answer:

8333

Explanation:

300km/hr = 300/60 = 5 km per min

5km/min = 5/60 = .08333333km per sec

km to cm = 100000, so

.083333 * 100000 = 8333

The train would travel at a speed of 8333.33 centimeters/second.

The total distance covered by any object per unit of time is known as speed. It depends only on the magnitude of the moving object. The unit of speed is a meter/second. The generally considered unit for speed is a meter per second.

As given in the problem the world record for the fastest train on Earth was set by a bullet train from Tokyo to Osaka in Japan. Without passengers, it can travel at a speed of 300 kilometers/hour,

1 kilometer = 1000 meters

1 meter = 100 centimeters

300 kilometers = 300×100000  centimeters

the speed of the fastest train = 300×100000  centimeters /3600 seconds

                                                = 8333.33 centimeters/second

Thus, the speed of the fastest train would be 8333.33 centimeters/second

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True I guess

because if the force is balanced and there is no net force, the object will not accelerate and the velocity will remain constant...

Not sure

Answer:

Hello! :)

Explanation:

A base quantity (or basic quantity) is chosen and arbitrarily defined, rather than being derived from a combination of other physical quantities. The 7 base quantities are: SI units are used as standardised units in all measurements in the world. SI is the short form for “International System of Units”

Hope This Helps!!!

Answer:

Kinetic Energy=1/2×m×v^2,Where m=mass,v=velocity. So, kinetic energy of the object=1/2×150×15^2 = 16875 kg m^2 s^-2 .

Explanation:

math lol

Explanation:

Given that,

A student covered a distance of 210 meters in 35 seconds.

We need to find the student's speed in meters/second and also in meters/minute.

Speed, v = distance (d)/time (t)

So,

[tex]v=\dfrac{210\ m}{35\ s}\\\\=6\ m/s[/tex]

We know that, 1 minute = 60 seconds

[tex]6\dfrac{m}{s}=6\times \dfrac{m}{(\dfrac{1}{60})\ \text{minutes}}\\\\=360\ \text{meters/minutes}[/tex]

Hence, the student's speed is 6 m/s or 360 meters/minute.

Answer:

(A) Original speed= 9.22 m/s

(B) Acceleration= -1.0099 m\s^2

Explanation:

A truck covers 40m in 7.10 secs

The truck slows down at a uniform velocity of 2.05 m/s

(A) The original speed can be calculated as follows

Vo= 2(40)/7.10 - 2.05

= 80/7.10 - 2.05

= 11.2676 - 2.05

= 9.22m/s

(B) The acceleration can be calculated as follows

a= Vf-Vo/t

= 2.05-9.22/7.10

= -7.17/7.10

= -1.0099m/s^2

0 to 60 mph in 4.5 seconds

Explanation:

Answer: its taking him 100s to run around the track once

Explanation:

Options are not given in the question, so the complete question is as follows:

Three balls are used to model the Sun-Earth-Moon system. Which statement

describes the benefit of this model?

A. The model shows only how eclipses happen.

B. It shows information about a system too large to be studied easily.

C. It shows information about a system too fast to be studied  directly

D. The model can be used for the entire solar system.

Answer:

B. It shows information about a system too large to be studied easily.

Explanation:

The use of balls in the model makes it easy to understand the large solar system.

The solar system is comprised of the sun, moon, planets, and other celestial bodies. The model using three balls makes it easy to understand a large system. Using these balls many things about the solar system can be learned such as the position of the Sun-Earth-Moon, the phenomenon of rotation and revolution, and eclipses.

So, the given models show that a large solar system can be studied easily.

Hence, the correct option is "B".

Answer:

B. It shows information about a system too large to be studied easily.

Explanation:

Answer:

R=2F

Explanation:

As the forces are in same direction so the resultant force will be:

R=F+F

R=2F

Answer:

skeletal system

Explanation:

hope its the right answer:))

Answer:

top

Explanation:

Answer:

3000 kg meter per sec

Explanation:

Momentum of an object refers the motion of an object. Momentum depends upon mass and velocity both.

Formula to calculate the momentum of any object is,

Momentum = Mass × Velocity

By substituting values of mass and velocity of the shark from the question,

Momentum of shark = 200 × 15

                                  = 3000 kg meter per second

Therefore, shark weighing 200 kg has the momentum as 3000 kg meter per seconds.

Answer: 1. 5 1/6 m/s 2. Traveling Left 3. 0.45

Explanation:

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Answer:

Voltage is a measure of how much energy is delivered to charge. At its most basic, an electron (basic charge) is imparted 1.602×10^−19 joules when moved through an electric potential difference of one volt. An electron is then said to have an energy of 1 electronvolt. So, voltage is energy divided by charge.

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Speed = 25.3 m/s

Time taken = 9.6 s

Calculate the distance covered by a body.

Speed = Distance/Time

We know,

Speed = Distance/Time

[tex] \bf\implies \: 25.3 = \frac{Distance}{9.6} [/tex]

[tex] \bf \implies \: Distance = 25.3 \times 9.6[/tex]

[tex] \bf\implies \: Distance = 242.88 \: m \: (approx)[/tex]

Answer:

the ant

Explanation:

because work is done when there will be involvement of displacement in the direction of the force.

Answer:

The ant is doing work but the elephant is not

Explanation:

Work done = Force × Displacement

In case of ant and housefly,

Ants are dragging the housefly , so they are displacing the housefly from one point to the other by applying certain force , so we can say that they are doing work

In case of elephant and tree,

When the elephant is pushing the tree( applying force) , the tree is not moving which means that there is no Displacement, so work done will be

Work done = Force × Displacement

= Force × 0

= 0