When a neuron is stimulated enough, it
a. achieves a resting state.
b. becomes an agonist.
c. fires an action potential.
d. becomes an antagonist.

Given,

The initial pressure of the gas, P₁=120000 N/m²

The initial temperature of the gas, T₁=300 K

The required pressure of the gas, P₂=180000 N/m²

From Gay-Lussac's law,

Where T₂ is the required teperature to achieve the given gas pressure.

On substituting the known values,

Thus the alarm is activated at the temperature of 450 K

(i)

When the temperature of the gas is increased the kinetic energy of the molecules of the gas increases. This results in increased collision between the molecules. Increased collision causes the pressure of the gas to increase. Due to this pressure, the piston is pushed and the alarm goes off.

Answer:

\(38.3\ \text{m/s}\)

\(32.14\ \text{m/s}\)

6.55 seconds

\(52.65\ \text{m}\)

\(254.84\ \text{m}\)

Explanation:

u = Initial velocity of rock = 50 m/s

\(\theta\) = Angle of throw = \(40^{\circ}\)

g = Acceleration due to gravity = \(9.81\ \text{m/s}^2\)

Horizontal component is given by

\(u_x=u\cos\theta\\\Rightarrow u_x=50\times \cos40^{\circ}\\\Rightarrow u_x=38.3\ \text{m/s}\)

The horizontal component of the velocity is \(38.3\ \text{m/s}\)

Vertical component is given by

\(u_y=u\sin\theta\\\Rightarrow u_y=50\times \sin40^{\circ}\\\Rightarrow u_y=32.14\ \text{m/s}\)

The horizontal component of the velocity is \(32.14\ \text{m/s}\)

Time of flight is given by

\(t=\dfrac{2u\sin\theta}{g}\\\Rightarrow t=\dfrac{2\times 50\sin40^{\circ}}{9.81}\\\Rightarrow t=6.55\ \text{s}\)

The hang time of the rock is 6.55 seconds

Maximum height is given by

\(h=\dfrac{u^2\sin^2\theta}{2g}\\\Rightarrow h=\dfrac{50^2\sin^240^{\circ}}{2\times 9.81}\\\Rightarrow h=52.65\ \text{m}\)

Maximum height is \(52.65\ \text{m}\)

Range is given by

\(d=\dfrac{u^2\sin2\theta}{g}\\\Rightarrow d=\dfrac{50^2\sin(2\times40)^{\circ}}{9.81}\\\Rightarrow d=254.84\ \text{m}\)

The range is \(254.84\ \text{m}\)

Jack speed as he hits the water is 14.13m/s

What is speed?
The speed of an object, also known as v in kinematics, is the size of the change in that object's position over time or the size of the change in that object's position per unit of time, making it a scalar quantity. The instantaneous speed is the upper limit of the average speed as the duration of the time interval approaches zero. The average speed of an item in a period of time is equal to the distance travelled by the object divided by the duration of the period. Velocity and speed are not the same thing.

The only force on Jack is gravity, which points straight down, and has an acceleration of 9.91m/s².  Whether he's falling off a bridge or simply standing still on the surface of the earth, the acceleration due to gravity is the same.

If you're looking for the speed of Jack as he hits the water, you just need to solve for v in the equation\($v^2 = v_0^2 + 2ad$\).  
Here,
v is Jack's speed as he hits the water,
\($v_0$\) is Jack's initial speed (which is zero since he's not moving when he jumps),
a is Jack's acceleration (which is 9.91m/s²), and
d is Jack's displacement (which is the height of the bridge, which you said is 10m).  
This gives you an answer of \($v = \sqrt{2ad} = \sqrt{2(9.91)(10)} = 14.13 \ \mathrm{m/s}$\)

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Answer:

0.514 m/s

Explanation:

The knot is a unit of nautical speed used in maritime navigation.

1 knot is equal to one nautical mile per hour,

1 nautical mile per hour = 1.852 km/h

The basic SI system of units of speed is in 'm/s'

1.852 km/h = (1.852 x 1000)/3600 = 0.514 m/s

Answer:

Motor cortex

Both hemispheres have a motor cortex, with each side controlling muscles on the opposite side of the body (i.e, the left hemisphere controls muscles on the right side of the body).

Explanation:

Answer:

B. Reaction Time

Explanation:

Reaction Time is the amount of time it takes to respond to anything.

Answer:

(a) Applying brakes in a vehicle - Contact force

(b) a coconut falling from a coconut tree - Contact force

(c ) the planets revolving around the sun - Non-Contact force

(d) a ball is rolling on ground - Contact force

Explanation:

Contact forces are defined as the forces that apply between two objects which are in physical contacts with each other while non-contact forces forces that act between two objects that are not in physical contact with each other.

Given are some of the examples of contact and non-contact forces. So example of contact forces are applying brakes in a vehicle, a coconut falling from a coconut tree and a ball is rolling on ground.

Example of non-contact force is the planets revolving around the sun.

Answer:

Question: What is needed for a combustion reaction to take place?

Answer: In order for a combustion to take place there are 3 main ingredients that must be present: Oxygen, Heat and Fuel.

Question: What is formed in any combustion reaction?

Answer: Combustion reactions always have two products: carbon dioxide and water. Combustion always produces water vapor.

Question: Mercury reacts with oxygen to form mercuric oxide. Is this a combustion reaction?

Answer: Yes, it is a combustion reaction.

Question: What are the products of any combustion reaction involving a hydrocarbon?

Answer: carbon dioxide and water are the products of any combustion reaction involving a hydrocarbon.

Answer:

\(\boxed {\tt 14.7 \ Newtons}\)

Explanation:

Weight is force due to gravity.

The formula for weight is:

\(W=m*g\)

where m is the mass and g is the acceleration of gravity.

On Earth, the acceleration due to gravity is 9.8 meters per seconds squared.

The mass of the book is 1.5 kilograms. Therefore:

\(m= 1.5 \ kg \\g=9.8 \ m/s^2\)

Substitute the values into the formula.

\(W= 1.5 \ kg *9.8 \ m/s^2\)

Multiply.

\(W=14.7 \ kg*m/s^2\)

1 kg meter per second squared is equal to 1 Newton, so our answer of 14.7 kg*m/s² is equal to 14.7 Newtons.

\(W=14.7 \ N\)

The weight of a 1.5 kilogram book on Earth is 14.7 Newtons.

Answer:

Answer:

Explanation:

Weight is force due to gravity.

The formula for weight is:

where m is the mass and g is the acceleration of gravity.

On Earth, the acceleration due to gravity is 9.8 meters per seconds squared.

The mass of the book is 1.5 kilograms. Therefore:

Substitute the values into the formula.

Multiply.

1 kg meter per second squared is equal to 1 Newton, so our answer of 14.7 kg*m/s² is equal to 14.7 Newtons.

The weight of a 1.5 kilogram book on Earth is 14.7 Newtons.

Explanation:

Answer:

partecls

Explanation:

because they are to small to see with plain eyes

The potential energy of the roller coaster is 176,400 J (joules).

The potential energy of an object is given by the formula PE = mgh, where PE is the potential energy, m is the mass of the object, g is the acceleration due to gravity, and h is the height or vertical position of the object.

In this case, the roller coaster is at a peak of 20m and has a mass of 900kg. The acceleration due to gravity, g, is approximately 9.8 \(m/s^2\).

Using the formula, we can calculate the potential energy:

PE = mgh

= (900 kg)(9.8 \(m/s^2\))(20 m)

= 176,400 J

Therefore, the potential energy of the roller coaster is 176,400 J (joules).

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The net work done (in J) required to accelerate a 1500 kg car from 55 m/s to 65 m/s is 3127500 J

First, we shall obtain the initial kinetic energy. Details below:

KE₁ = ½mu²

= ½ × 1500 × 55²

= 41250 J

Next, we shall final kinetic energy. Details below:

KE₂ = ½mv²

= ½ × 1500 × 65²

= 3168750 J

Finally, we shall determine the net work done. Details below:

W = KE₂ - KE₁

= 3168750 - 41250

= 3127500 J

Thus, the net work done is 3127500 J

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Answer:

C

Explanation:

Kinetic energy is the energy of motion. It has the most potential energy at the top but the most kinetic at the bottom after it's accelerated fully down the slope.

Answer:

A capacitor is formed from two square plates of edge length a and separation d, with d <

Explanation:

A capacitor is formed from two square plates of edge length a and separation d, with d <

Answer:

b

Explanation:

this because if force (f) are resultant cos then the point is proportional to the direction of c at greatest possible forces

Answer:

i cant make funny joke

Explanation:

but i can be alive.

wait no, im failing at that currently.

Answer:

F =ma

a=f/m =18/3= 6m/m²

Explanation:

the resulting acceleration will 6 m/s² because the question asking us to solve for the acceleration.

The final velocity of the car can be calculated using the formula: final velocity = initial velocity + acceleration * time. Plugging in the values you provided, we get: final velocity = 5.82 m/s + 2.35 m/s² * 3.25 s = 13.44 m/s.

Answer:

Approximately \(3.967\; {\rm kg\cdot m\cdot s^{-1}}\).

Explanation:

Convert velocity to the standard units (meters per second):

\(\begin{aligned}v &= 246.2 \; {\rm km \cdot h^{-1}} \\ &= 246.2 \; {\rm km \cdot h^{-1}}\times \frac{1\; {\rm h}}{3600\; {\rm s}} \times \frac{1000\; {\rm m}}{1\; {\rm km}} \\ &\approx 68.389\; {\rm m\cdot s^{-1}}\end{aligned}\).

Convert mass to standard units (kilograms):

\(\begin{aligned} m &= 58\; {\rm g} \\ &= 58\; {\rm g} \times\frac{1\; {\rm kg}}{1000\; {\rm g}}\\ &= 0.058\; {\rm kg}\end{aligned}\).

When an object of mass \(m\) travels at a velocity of \(v\), momentum of that object would be \(p = m\, v\). In standard units, the momentum of this tennis ball would be:

\(\begin{aligned}p &= m\, v \\ &\approx (0.058\; {\rm kg})\, (68.389\; {\rm m\cdot s^{-1}}) \\ &\approx 3.967\; {\rm kg \cdot m\cdot s^{-1}}\end{aligned}\).

Answer:

Hope this is helpful!

Explanation:

In every form of collision the momentum is conserved and it is the same before and after the collision, but in perfectly elastic collision, there is no loss of kinetic energy in the collision. In an inelastic collision is one in which part of the kinetic energy is changed to some other form of energy in the collision. Any macroscopic collision between objects will convert some of the kinetic energy into internal energy and other forms of energy.

We can use currency as a medium of exchange in transactions because of its easy availability.

Currency is the most common medium of exchange accepted as a standard by all parties for settling economic transactions because every region or country has its specific type of currency in which they do transactions and carried out their economic activities world wide.  Currency is also considered as a medium of exchange for goods and services. It is money that is present in the form of paper and coins which is issued by a government. Currency is generally accepted because of high value as a method of payment. U.S. dollars ($), euros (€), Japanese yen (¥), and pounds sterling (£) are the examples of currencies of different countries around the world.

So we can conclude that We can use currency as a medium of exchange in transactions because of its easy availability.

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Answer:

12 Joules

Explanation:

I believe a Joule is a Newton meter, and work is represented in joules, so 6 N * 2m = 12 Nm (joules)

further from I didn't know the answer

Answer:

it might be b, good luck

Explanation:

not too sure

Answer:

The value  is  \(P =3.294 \ W\)

Explanation:

From the question we are that

     The velocity  \(v = 0.540 \ m/s\)

      The  time taken is  \(t = 27.0 ms = 27.0 *10^{-3} \ s\)

     The  total mass of the train is  \(m = 610 \ g = 0.610 \ kg\)

Generally the average power delivered is mathematically represented as

     \(P =\frac{KE }{t}\)    

     \(P =\frac{ \frac{1}{2} * m * v^2 }{t}\)    

=>  \(P =\frac{ \frac{1}{2} * 0.610 * 0.540 ^2 }{ 27.0 *10^{-3}}\)    

=>  \(P =3.294 \ W\)  

Answer:

3.29 Watts

Explanation:

Given that

Initial velocity, u = 0 m/s

Final velocity, v = 0.54 m/s

Change in time, Δt = 27 ms

Mass of the train, m = 610 g = 0.61 kg

Power of any object is given as

P = Work done / time

P = W / t

Work done in this question, W is

W = 1/2mv²

W = 1/2 * 0.61 * 0.54²

W = 305 * 0.2916

W = 0.0889 kgm²/s²

Plugging this value into the equation we'd stated earlier, we have

P = W / t

P = 0.0889 / 27*10^-3

P = 3.293 Watts

Therefore, the average power delivered to the train during its acceleration is 3.29 Watts

The spontaneous drying of leaves occurs due to the loss of moisture through evaporation, primarily facilitated by transpiration and environmental factors such as temperature, humidity, and airflow. Aging and senescence also contribute to the process.

The spontaneous process of drying leaves, also known as desiccation, is a natural occurrence that takes place as a result of various factors. Primarily, it involves the loss of moisture from the leaf tissues through evaporation. Leaves have specialized structures called stomata, small openings on their surfaces, which facilitate the exchange of gases, including water vapor.

When environmental conditions such as high temperature, low humidity, and increased airflow prevail, water molecules escape through the stomata into the surrounding air. This process, called transpiration, plays a significant role in leaf drying. Additionally, sunlight accelerates the rate of evaporation by providing energy to convert water into vapor.

As moisture content decreases, the cell walls of the leaf tissues contract, causing the leaf to become dehydrated and eventually dry. The process is also influenced by the plant's natural aging and senescence, where the leaf undergoes programmed cell death.

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Answer:

a)  F = 1.26 10⁵ N, b)  F = 2.44 10³ N, c)   F_net = 1.82 10³ N  directed vertically upwards

Explanation:

For this exercise we must use the relationship between momentum and momentum

         I = Δp

         F t = p_f -p₀

a) It asks to find the force

as the man stops the final velocity is zero

         F = 0 - p₀ / t

the speed is directed downwards which is why it is negative, therefore the result is positive

         F = m v₀ / t

         F = 63.5 7.89 / 3.99 10⁻³

         F = 1.26 10⁵ N

b) in this case flex the knees giving a time of t = 0.205 s

          F = 63.5 7.89 / 0.205

          F = 2.44 10³ N

c) The net force is

         F_net = Sum F

         F_net = F - W

         F_net = F - mg

let's calculate

         F_net = 2.44 10³ - 63.5 9.8

         F_net = 1.82 10³ N

since it is positive it is directed vertically upwards

Answer:

The central nervous system is generally made of brain and spinal cord.

Explanation:

Answer:

where u put it last time or retrace ur steps to where u last put it

Answer:

v = -9.8 (m/s2) t j

Explanation:

The velocity of the falling ball as a function of time is v = -9.8 (m/s2) t j and its position as a function of time is r = (4.9 m - ½ 9.8 (m/s2) t2) j.