A scientific model can be used to _______.a. replace study of the actual system
b. better understand systems and processes
c. complicate ideas
d. all of the above

Answers

Answer 1

Answer: The idea to have scientific models it is to be used in order to better understand systems and procesess. So the answer you are looking for is option B. Hope this is useful

Related Questions

Which countries did President G.W. Bush include in his “axis of evil”?a. North Korea and Iranb. Cuba and Venezuelac. Russia and Chinad. Egypt and Afghanistan
The resultant vector of two particular displacement vectors does not equal the sum of the magnitudes of the individual vectors.Decribe the directions of the two vectors
A basic observation of a star is how bright it appears. This brightness is known as the star'sA. luminosity.B. absent magnitude.C. apparent magnitude.D. absolute magnitude.
What are two main factors that affect how quickly a coastline erodes?
Two technicians are discussing hydraulics. Technician A says that if pistons of the same size are used, motion and force can be increased or decreased. Technician B says that if a small piston acts upon a larger piston, the force of the larger piston will increase, but the distance it travels will decrease. Who is correct? A. Technician B only B. Technician A only C. Both Technician A and B D. Neither Technician A nor B

When a 191 N bag of nails hangs motionlessfrom a single vertical strand of rope, how
much tension is exerted in the strand?
Answer in units of N.

Answers

At the place where the rope meets the bag, the upward force
of the rope must be exactly the same as the downward force of
the load of nails. If the net force at that point were not zero, then
that point would be accelerating either upward or downward. So
the upward force of the rope at that point is 191 N.

I can't tell you about the tension higher up in the rope. If the rope
itself has any mass, then points higher up must support not only
the bag of nails but also the weight of the section of rope that is
below the point.

If the rope has no mass, then the tension is 191 N everywhere along it.

The length of some fish are modeled by a von Bertalanffy growth function. For Pacific halibut, this function has the form L(t) = 200(1 – 0.956e–0.18t ) where L(t) is the length (in centimeters) of a fish t years old.(a) Find the rate of change of the length as a function of time

Answers

Answer:

Rate of change of length as a function of time is given by $(dL(t))/(dt)=34.416e^(-0.18t)$

Explanation:

The length as function of time is given by $L(t)=200(1-0.956e^(-0.18t))$

Differentiating with respect to time we get

$(dL(t))/(dt)=(d(200(1-0.956e^(-0.18t))))/(dt)\n\n(dL(t))/(dt)=200(d(1-0.956e^(-0.18t)))/(dt)\n\n=200* 0.18* 0.956e^(-0.18t)\n\n(dL(t))/(dt)=34.416e^(-0.18t)$

Because of convection, the warmest air in a room A. spreads out in all directions.
B. rises toward the ceiling.
C. transfers heat to the walls.
D. sinks toward the floor.

Answers

The correct choice is
B. rises toward the ceiling
In fact, the warmest air is also the air with least density: in warm air, the particles move faster, so the distance between them is larger, on average. Therefore, the warmest air is less dense, and because of that it tends to flow upwards (due to Archimede's principle) and it is replaced by the colder air, creating the so-called convection current.

Which substance is uniquely a product of incomplete combustion of a fossil fuel?

Answers

I can think of two of them:

-- carbon monoxide

-- black soot

which substance is uniquely a product of incomplete combustion of a fossil fuel?

carbon monoxide

your friend wants to know the amount of salt added to her favorite fast food French fries. what would you recommend that she do to find out the amount of salt ?

Answers

Every fast-food chain is required by law to make the nutrition content of the
items on its menu publicly available.

My friend should walk into her favorite place, or into the nearest McRonald's,
Bendy's, Tennessee Fried Turkey, Bulgur King, Plucky Please, White Palace,
Pita Hut, Carl's Senior, Back in the Box, or any of those others, ask to see
the Manager, and ask the manager for a chart of nutritional information that
includes their french fries.

To be nice about it, she should do this at a time when the place is not too busy,
and the manager doesn't have a lot of more-important things that need to be
doneright now.

Under the french fries, look at the serving size, and the figure for "Sodium"
in that serving, which is the nutrient that your body gets from salt. Less is
better. More is worse. For an adult, the CDC Institute of Medicine says
that 1500mg a day is 'adequate' for an adult. The US Food and Drug
Administration recommends that adults should get 'no more than' 2300mg
in a day. People who have high blood pressure are supposed to watch it,
and take in a lot less sodium.

And there are organizations with official-sounding names that totally dispute
all of this.

But to answer your question, that's what she should do to learn the amount
of salt used at the place where likes to get her french fries.

Can Someone Help ? !5 Points!!!If the weight of displaced water is greater than the weight of an object, then the object will:

A. float
B. sink
C. sink, then float

An object will float when:

A. buoyant force is equal to the weight of the object
B. buoyant force is less than the weight of the object
C. density is equal to the weight of the object
D. density is greater than the weight of the object

What is the buoyancy force on a 15 g object which displaces 60 mL of water? (Remember to change mL of water to grams and grams to kg)

A. 900 N
B. 25 N
C. 0.59 N
D. 0.25 N

An object has a density of 20 g/cm3. When placed in a cylinder, it displaces 5 mL of water. What is the mass of the object?

A. 0.25 g
B. 4.0 g
C. 100.0 g

Substance has a mass of 16.2 grams. It displaces 8.1 grams of water. What is its specific gravity?

A. 2.0
B. 5.5
D. 131.22

Answers

1) A. float

There are two forces acting on an object in the water: the weight of the object (downward) and the buoyancy (upward), which is equal to the weight of displaced water. If the weight of displaced water is greater than the weight of the object, it means that there is a net force directed upward, so the object will float.

2) A. buoyant force is equal to the weight of the object

As stated in the previous question, there are only these two forces acting on an object in the water (buoyant force and weight of the object), so if the two forces are equal, then the object is in equilibrium, so it will float.

3) C. 0.59 N

The buoyancy force is given by:

$B=\rho_L V_d g$

where

$\rho_L = 1000 kg/m^3$ is the density of the liquid (water)

$V_d=60 mL=6 \cdot 10^(-2) L=6 \cdot 10^(-5) m^3$ is the volume of displaced water

$g=9.8 m/s^2$ is the acceleration of gravity

Substituting numbers into the formula, we find

$B=(1000 kg/m^3)(6 \cdot 10^(-5) m^3)(9.8 m/s^2)=0.59 N$

4) C. 100.0 g

The density of the object is 20 g/cm^3, which is greater than the density of the water (1 g/cm^3): this means that the object will sink, so its volume is equal to the volume of displaced water.

Therefore, we have:

- object's density: $\rho=20 g/cm^3$

- object's volume: $V=5 mL=5 cm^3$

so, the mass of the object is

$m=dV=(20 g/cm^3)(5 cm^3)=100.0 g$

5) A. 2.0 g

The specific gravity of an object is given by the ratio between its density ( $\rho$ ) and the density of a reference substance ( $\rho_W$ ), in this case water:

$SG=(\rho)/(\rho_W)$

whe can rewrite each density as the ratio between mass and volume:

$SG=(m_o /V_o)/(m_w/V_w)$

where the suffix o refers to the object, while the suffix w refers to the water. However, if we assume that the object is completely in the water, the two volumes are equal, so we can simplify the formula:

$SG=(m_o)/(m_w)=(16.2 g)/(8.1 g)=2.0$

Other Questions

Explain the law of conservation of energy.

Can someone help what are the common branches of physics

What does the slope of the line on this velocity versus time graph represent? A. positive deceleration B. zero acceleration C. positive acceleration D. negative acceleration

At what approximate altitude in the atmosphere can stratospheric ozone be found?

A scientific model can be used to _______.a. replace study of the actual system b. better understand systems and processes c. complicate ideas d. all of the above

Answers

Related Questions

Answers

Answers

Answers

Answers

Answers

Answers

A scientific model can be used to _______.a. replace study of the actual system
b. better understand systems and processes
c. complicate ideas
d. all of the above