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maxonik [38]
4 years ago
6

Olivia is comparing two products: limestone and coffee. Limestone is made from minerals, and coffee is made from plant seeds. Wh

ich statement best compares these two products?
A.Limestone is a renewable resource, and coffee is a nonrenewable resource. 
B.Limestone is a nonrenewable resource, and coffee is a renewable resource. 
C.Limestone and coffee are both nonrenewable resources. 
D.Limestone and coffee are both renewable resources. 
Physics
2 answers:
sveticcg [70]4 years ago
7 0

Answer:

The correct answer is option B, Limestone is a nonrenewable resource, and coffee is a renewable resource.

Explanation:

A renewable resource is something which can be created again after usage but a non-renewable resource once used shall not be recreated again.  

Limestone is available to human beings as a resource developed by geological forces but coffee is a plant which can be grown through knowledge and skill of human beings again and again year on year . Thus, Being easily retrievable coffee is considered as a renewable resource while lime stone being non retrievable is considered as a non-renewable resource.  

Anuta_ua [19.1K]4 years ago
3 0
<h2>Olivia is comparing Limestone and Coffee - Option B </h2>

Olivia is comparing two products which are limestone and coffee. Limestone is made from minerals, and coffee is made from plant seeds. Limestone is a nonrenewable resource, and coffee is a renewable resource best compares these two products. Coffee can be used again and can be replaced by other so it is renewable resource. But the limestone cannot be used again and again, it is a non-renewable resource.

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Will you travel in 3.0 minutes running at a rate of 6.0 m/s
aalyn [17]

Answer:

1080 meters

Explanation:

60sec in 1 minute

So, 3x60=180

  • 6m/s (one second is 6 meters)

So, 6x180=1080 meters

5 0
3 years ago
A ball is tossed vertically upward. When it reaches its highest point (before falling back downward) Group of answer choices the
nignag [31]

Answer:

the velocity is zero, the acceleration is directed downward, and the force of gravity acting on the ball is directed downward

Explanation:

Is this exercise in kinematics

          v = v₀ - g t

where g is the acceleration of the ball, which is created by the attraction of the ball to the Earth.

At the highest point

velocity must be zero.

The acceleration depends on the Earth therefore it is constant at this point and with a downward direction.

The force of the earth on the ball is towards the center of the Earth, that is, down

all other alternatives are wrong

7 0
3 years ago
At a certain instant, a rotating turbine wheel of radius RR has angular speed ωω (measured in rad/srad/s). What must be the magn
jonny [76]

Answer:

Explanation:

The magnitude of the acceleration makes an angle of 30° with the tangential velocity.

Resolving the acceleration to tangential and radial acceleration

at = aCos30 = √3a/2

ar = aSin30 = ½a

a = 2•ar

Then, the tangential acceleration is the linear acceleration, so the relationship between the tangential acceleration and angular acceleration is given as:

at = Rα

Then, α = at/R

since at = √3a/2

Then, α = √3 at/2R, equation 1

The radial acceleration is given as

ar = ω²R

Note that, at² + ar² = a²

at = √(a²-ar²)

Back to equation 1

α = √3 at/2R

α = √3√(a²-ar²)/2R

α = √3√(a²-(w²R)²)/2R

α = √3(a²-w⁴R²) / 2R

Also, a = 2•ar = 2w²R

Then,

α = √3((2w²R)²-w⁴R²) / 2R

α = √3(4w⁴R²-w⁴R²) / 2R

α = √3(3w⁴R²) / 2R

α = √9w⁴R² / 2R

α = 3w²R / 2R

α = 3w²/2

7 0
3 years ago
What’s 5.1 cm in Newton’s?
faust18 [17]
0.051 newton meter.
5 0
3 years ago
A coil has N turns enclosing an area of A. In a physics laboratory experiment, the coil is rotated during the time interval delt
zmey [24]

Answer:

a) Magnetic flux before the plane is rotated = (BA) Wb

b) Magnetic flux after the plane is rotated = 0 Wb

c) Magnitude of the average induced emf =

(NBA)/Δt

Explanation:

The magnetic flux is given as

Φ = BA cos θ

where B = magnetic field strength

A = Cross sectional Area of the loop enclosed

θ = the angle in the equation above is between the line normal to plane (NOT the plane itself!) and the magnetic field.

a) Given that the position of the plane of each turn is perpendicular to Earth's magnetic field before being rotated.

Before the plane is rotated, θ = 0°

Φ = BA cos θ = BA cos 0° = BA

b) Given that the position of the plane of each turn is parallel to Earth's magnetic field after being rotated.

After the plane is rotated, θ = 90°

Φ = BA cos θ = BA cos 90° = 0

c) According to the Faraday's law of electromagnetic induction,

E = - N (ΔΦ/Δt) (minus sign to indicate that the direction of the induced emf is opposite the direction of the change of magnetic flux)

ΔΦ = (final Φ) - (initial Φ) = (0 - BA) = - BA

E = - N (- BA)/Δt

E = (NBA)/Δt

Hope this Helps!!!

8 0
3 years ago
Read 2 more answers
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