what’s the answer?? middle question

Answer:

, Nervous tissue is composed of two types of cells, neurons and glial cells. Neurons are the primary type of cell that most anyone associates with the nervous system. They are responsible for the computation and communication that the nervous system provides.

Answer:

H-a seated high school student

Explanation:

"Inertia" is an important word in Physics. It is the resistance of an object to any change in motion. Measuring the amount of inertia largely relies on the "mass of an object." The heavier the object, the more likely it is able to resist any change in motion.

Among the choices above, the high school student is the heaviest and has greater mass than the leaf, softball or balloon. This means, it has the greatest inertia.

Thus, this explains the answer.

Answer:

The work required is -515,872.5 J

Explanation:

Work is defined in physics as the force that is applied to a body to move it from one point to another.

The total work W done on an object to move from one position A to another B is equal to the change in the kinetic energy of the object. That is, work is also defined as the change in the kinetic energy of an object.

Kinetic energy (Ec) depends on the mass and speed of the body. This energy is calculated by the expression:

[tex]Ec=\frac{1}{2} *m*v^{2}[/tex]

where kinetic energy is measured in Joules (J), mass in kilograms (kg), and velocity in meters per second (m/s).

The work (W) of this force is equal to the difference between the final value and the initial value of the kinetic energy of the particle:

[tex]W=\frac{1}{2} *m*v2^{2}-\frac{1}{2} *m*v1^{2}[/tex]

[tex]W=\frac{1}{2} *m*(v2^{2}-v1^{2})[/tex]

In this case:

Replacing:

[tex]W=\frac{1}{2} *2145 kg*((12\frac{m}{s} )^{2}-(25\frac{m}{s} )^{2})[/tex]

W= -515,872.5 J

The work required is -515,872.5 J

The amount of work needed by the vehicle to decrease its speed from 25 m/s to 12 m/s is 515872.5 J.

The amount of work required by the truck to decrease its speed can be calculated using the formula below.

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, The amount of work needed by the vehicle to decrease its speed from 25 m/s to 12 m/s is 515872.5 J.

Learn more about work here: brainly.com/question/18762601

Answer:

Explanation:

To find the force acting on an object given it's mass and acceleration we use the formula

From the question

mass = 0.314 kg

acceleration = 153 m/s²

We have

force = 0.314 × 153 = 48.042

We have the final answer as

Hope this helps you

Answer:

356°C.

Explanation:

(1). The first step to the solution to this particular Question/problem is to determine the Biot number, and after that to check the equivalent value of the Biot number with plate constants.

That is, Biot number = (length × ∞)÷ thermal conductivity. Which gives us the answer as ∞. Therefore, the equivalent value of the ∞ on the plates constant = 1.2732 for A and 1.5708 for λ.

(2). The next thing to do is to determine the fourier number.

fourier number = [α = 97.1 × 10−6 m2/s × 15 s] ÷ (.05m)^2 = 0.5826.

(3). The next thing is to determine the temperature at the center plane after 15 s of heating.

The temperature at the center plane after 15 s of heating = 500°C [ 25°C - 500°C ] [1.2732] × e^(-1.5708)^2 ( 0.5826).

The temperature at the center plane after 15 s of heating = 356°C.

Answer:0m/s

Explanation.

The initial velocity is 0 because when the object starts moving its speed is zero

Answer:

3

Explanation:

5 1/3 - 2 1/3  = 3

Broken down: 1/3 - 1/3 = 0      5 - 2 = 2

Answer:

acceleration is : 276 mi/s^2

(276 miles per second squared)

Explanation:

We use the formula for acceleration (a) which is the change in velocity divided by the time it took to change it:

a = (vf - vi) / t

where "vf" stands for final velocity, "vi" for initial velocity, and "t" for the time it took for the velocity to change.

In our case:

a = (69 - 0) / 0.25 = 276 mi/s^2

(276 miles per second squared)

Answer:

through uv light

Answer:

What????

Explanation:

is there more to the problem???

Answer:

symbolic solution for the coefficient of friction between the baby and the sled is  

   [tex] \mu  =  \frac{m + M_s}{m}  *  \frac{a}{g}[/tex]

Explanation:

From the question we are told that

   The  mass of the boy is  [tex]M_e  =[/tex]

   The  mass of the shed is  [tex]M_s[/tex]

    The mass of the baby is  [tex]m[/tex]

    The  maximum acceleration for the baby to stay is  a

Generally the frictional  force between the baby and the shed is mathematically represented as

     [tex]F_f  =  \mu  N[/tex]

Here  N is the normal force acting on the baby which is mathematically represented as

     [tex]N  =  m *  g[/tex]

=>   [tex]F_f  =  \mu *  m *  g[/tex]

Now for the baby not the slip off the shed the frictional  force between the baby and the shed must be equal to the the force applied by the child

The force applied by the child is mathematically represented as

    [tex]F  =  [M_s+m] * a[/tex]

So

     [tex] \mu *  m *  g  =  [M_s+m] * a[/tex]

=>    [tex] \mu  =  \frac{m + M_s}{m}  *  \frac{a}{g}[/tex]

Answer:

a = 3.88 m/s^2  (3.88 meters per second squared)

Explanation:

The acceleration of the car can be obtained based of the change of velocities  (from initial velocity "vi" to final velocity "vf") in the given amount of time:

In our case:

a = (26.6 - 20) / 1.7 = 3.88 m/s^2

Answer:

the conclusion is that the plant that had been given fertilizer B grew more than the plant with fertilizer A and the plant without fertilizer. so in conclusion fertilizer B is better for growing plants fastly.

the problem is that you noticed your tomatoes were not growing properly.

Hope this helps!❤

Answer:

24 km

Explanation:

9 + 9 + 6 = 24

Answer:

The temperature of the low temperature thermal reservoir is 300 K.

Explanation:

All reversible power cycles are equivalent to the Carnot's cycle, whose equation for efficiency is:

[tex]\eta_{th} =1-\frac{T_{L}}{T_{H}}[/tex] (Eq. 1)

Where:

[tex]\eta_{th}[/tex] - Thermal efficiency, dimensionless.

[tex]T_{H}[/tex] - High temperature reservoir, measured in Kelvin.

[tex]T_{L}[/tex] - Low temperature reservoir, measured in Kelvin.

Now we proceed to clear the low temperature reservoir within:

[tex]\frac{T_{L}}{T_{H}} = 1-\eta_{th}[/tex]

[tex]T_{L} = (1-\eta_{th})\cdot T_{H}[/tex]

If [tex]\eta_{th} = 0.75[/tex] and [tex]T_{H} = 1200\,K[/tex], then:

[tex]T_{L} = (1-0.75)\cdot (1200\,K)[/tex]

[tex]T_{L} = 300\,K[/tex]

The temperature of the low temperature thermal reservoir is 300 K.

Answer:

0

Explanation:

The initial velocity of an object is 15 m/s when it was thrown straight up into the air.

At maximum height, the velocity of the object is equal to 0. It starts coming  downward after that and falls ground. Height attained by the object is given by :

[tex]h=\dfrac{v^2}{2g}[/tex]

Hence,  its velocity at the peak of its flight is equal to 0.

Answer:

4.44 hr

Explanation:

distance= rate*time

400km/(90 km/hr)=time

time=4.44 hr

Answer:

v = 2√2 m/s

Explanation:

The following data were obtained from the question:

Height (h) = 10 m

Acceleration due to gravity (g) = 10 m/s²

Horizontal distance (s) = 4 m

Horizontal velocity (v) =.?

Next, we shall determine the time taken for the ball to get to the target.

This can be obtained as shown below:

Height (h) = 10 m

Acceleration due to gravity (g) = 10 m/s²

Time (t) =?

h = ½gt²

10 = ½ × 10 × t²

10 = 5 × t²

Divide both side by 5

t² = 10/5

t² = 2

Take the square root of both side.

t = √2 s

Finally, we shall determine the horizontal velocity as shown below:

Horizontal distance (s) = 4 m

Time (t) = √2 s

Horizontal velocity (v) =.?

s = vt

4 = v × √2

Divide both side by √2

v = 4 /√2

Rationalise the denominator

v = (4 /√2) × √2/√2

v = 4 × √2 / √2 × √2

v = 4 × √2 / 2

v = 2√2 m/s

Answer:

F₁ = 4.29 x 10⁵ N

Explanation:

The total force required to move the freight train with the given acceleration is given by the following formula:

F = ma + f

where,

F = Total Force Required from both engines = ?

m = equivalent mass of system = 2(8 x 10⁵ kg) + 5.5 x 10⁵ kg = 21.5 x 10⁵ kg

a = required acceleration = 5 x 10⁻² m/s²

f = force of friction = 7.5 x 10⁵ N

Therefore,

F = (21.5 x 10⁵ kg)(0.05 m/s²) + 7.5 x 10⁵ N

F = 8.575 x 10⁵ N

Now, for identical forces in each engine can be given as:

Force exerted by each engine = F₁ = F/2

F₁ = 8.575 x 10⁵ N/2

F₁ = 4.29 x 10⁵ N

Answer:True

Explanation:

Answer:

B is the correct answer

Explanation:

I just did this question

Answer:

The amount of net force of the falling object is -310 N, or 310 N downwards

Explanation:

Net Force

Being the force a vector, the net force is the sum of all the force vectors acting on an object at a given time:

[tex]\vec F_n=\vec F_1+\vec F_2+\vec F_3+.....\vec F_m[/tex]

When the forces are acting in one axis, say the y-axis, the direction of the forces can be considered by the sign of the magnitude of the force.

For example, the weight of the object is usually assigned a negative direction. In our problem:

W=-744 N

The air resistance always opposes the direction of motion. Since the object is falling, the air resistance is positive:

Fa = +434 N

The net force is the sum of both, including their signs:

Fn = -744 N + 434 N = -310 N

The amount of net force of the falling object is -310 N, or 310 N downwards

Answer:

5.634004 × 10^7

Explanation:

the number 7 is for the numbers before the number 5

Answer:

Electrons have virtually no mass

Explanation:

I had a test an this was the right answer^

Answer: Electrons have virtually no mass

Explanation: on edpuzzle that was the answer

Answer:

Potential Energy = x = m g h

Kinetic energy = 1/2 m v^2

Assuming the mass fall from rest

1/2 m v^2 = m g h

v^2 = 2 g h

So the speed attained is independent of the mass

Also, x / v   does not have the units of mass

So the solution is none of the above.

Answer:

The most important is that the thermal conductivity of the armadillas several orders of magnitude lower than the thermal conductivity of the metal, therefore it is easier to maintain the temperature in winter

Explanation:

Cement and bricks are used in the construction of houses instead of metal, for several reasons

* The most important is that the thermal conductivity of the armadillas several orders of magnitude lower than the thermal conductivity of the metal, therefore it is easier to maintain the temperature in winter

* Metal has more oxidation problems than brick

* The cost of sheet metal is higher than the cost of cement brick.

Explanation:

wavelength=3.42m

velocity=330m/s

T=?

v=f×wavelength

f=330÷3.42

f=96.5Hz

T=1/f

=1/96.5

T=0.01s

Answer:

A

Explanation:

Answer: B

Explanation: I got it right