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nydimaria [60]
3 years ago
15

Which statement best describes the term absolute threshold?

Physics
1 answer:
sladkih [1.3K]3 years ago
7 0
I believe the correct answer from the choices listed above is option B. Absolute threshold refers to the lowest intensity at which a person can detect stimuli. It <span>is the smallest level of energy required by an external stimulus to be detectable by the human senses. Hope this answers the question.</span>
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The compound limestone (which is mined in Crossville) is chemically
Salsk061 [2.6K]

Answer:

True

Explanation:

Limestone is a carbonate chemical sedimentary rock often chemically called calcium carbonate.

The mineral calcium carbonate makes up the framework of this rock that has become the staple material used for cement production.

Chemically, the formula is given as CaCO₃. The rock accumulates from the a rich deposit of calcite, which is the mineral that is made up of calcium carbonate to form the limestone.

          CaCO₃         -        Calcite      -        Limestone

     compound                mineral                   rock

Limestone is a rock and the compound it is made up of is calcium carbonate. In some cases, a Ca-Mg carbonate occurs with limestone and it is called a dolomite.

5 0
4 years ago
¿Cuál es la energía cinética que ejerce un Transmilenio que pesa 19500 kg vacío que se desplaza a 53 Km/h y cual es su energía c
EastWind [94]

Answer:

english?

Explanation:

7 0
3 years ago
Ethan and Rebecca are riding on a merry-go-round. Ethan rides on a horse at the outer rim of the circlar platform, twice as far
xz_007 [3.2K]

Answer:

Ethan's tangential speed is twice as Rebecca's.

Explanation:

Let r be the distance from the center of the platform to Rebecca's horse, v_R Rebecca's tangential speed, v_E the Ethan's tangential speed and \omega the merry-go-round angular speed. The distance from the center of the platform to Ethan's horse is 2r. The angular speed is related to the tangential speed by the equation:

\omega =\frac{v}{R}

Since the angular speed is the same for Ethan and Rebecca, we have that:

\frac{v_E}{2r}=\frac{v_R}{r}

Now, solving for v_E we get:

v_E=2v_R

It means that Ethan's tangential speed is twice as Rebecca's.

3 0
3 years ago
A ductile cast-iron bar is to support a load of 178 kN in a heat-treating furnace used to make malleable cast iron. The bar is l
Nitella [24]

Answer: L.M = 34.69

Area of the bar = 25835m^2

Explanation: To design a bar that can withstand temperature at 773K for 10years, we need to calculate and know:

1) the Larson Miller value

2) rupture time

3) creep rate

4) stress and load.

Please find the attached file for the solution

3 0
4 years ago
What is the gravitational potential energy of a 0.550-kg projectile flying with 335 m/s, 72 meters above the ground?
Fofino [41]

Answer:

GPE = 388.08 Joules.

Explanation:

Given the following data;

Mass = 0.550kg

Speed = 335 m/s

Height = 72 meters

We know that acceleration due to gravity, g is equal to 9.8 m/s²

To find the gravitational potential energy;

Gravitational potential energy (GPE) is an energy possessed by an object or body due to its position above the earth.

Mathematically, gravitational potential energy is given by the formula;

G.P.E = mgh

Where;

G.P.E represents potential energy measured in Joules.

m represents the mass of an object.

g represents acceleration due to gravity measured in meters per seconds square.

h represents the height measured in meters.

Substituting into the formula, we have;

G.P.E = 0.550 * 9.8 * 72

GPE = 388.08 Joules.

4 0
3 years ago
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