how much force is needed to accelerate a 20 kg mass at a rate of 4 m/s to the second power?

Answer:

Pressure = 40Pa

Force = 80N

Surface area = ?

Pressure = Force/Surface area

hence Surface area = Force/Pressure

Surface area = 80N/40Pa = 2m^2.

Answer:

yes, what's your question. l will help if I can.

Answer:

Temperature T2 = 237.5 K

Explanation:

Given:

Volume = 35 ml

T1 = 285 k

P1 = 150 pa

P2 = 125 pa

Find:

Temperature T2

Computation:

P1V/T1 = P2V/T2

150(35) / 285 = 125(35) / T2

Temperature T2 = 237.5 K

Answer:

Block grants provide state and local governments funding to assist them in addressing broad purposes, such as community development, social services, public health, or law enforcement, and generally provide them more control over the use of the funds than categorical grants

Explanation:

Answer:

Block grants provide state and local governments funding to assist them in addressing broad purposes, such as community development, social services, public health, or law enforcement, and generally provide them more control over the use of the funds than categorical grants

Explanation:

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Responder:

0.15 m

Explicación:

Paso uno:

dado

Fuerza F = 600N

diámetro d1- 6cm am = 0.06m

A1 = πd1 ^ 2/4 = 3.142 * 0.06 ^ 2/4

= 0,002 m ^ 2

Carga L = 350 kg a newton = 350 * 10 = 3500N

A2 =?

Segundo paso:

sabemos que la presión aplicada a un extremo para levantar una carga en el otro extremo se expresa matemáticamente como

F1 / A1 = F2 / A

sustituir

600 / 0.002 = 3500 / A

cruzar multiplicar

A2 = 0.002 * 3500/600

A2 = 9.89 / 600

A2 = 0.02

sabemos que área = πd ^ 2/4

0.02 = πd2 ^ 2/4

0.02 = 3.142 * d2 ^ 2/4

0.02 * 4 / 3.142 = d2 ^ 2

0.025 = d ^ 2

d = √0.025

d = 0,15 m

el diámetro debe ser de 0.15 m

Answer:

Explanation:

As the king came near the hermit's hut, he saw the hermit digging the ground in front of his hut. He greeted the king and continued digging. ... (ii) The hermit saw simple people only, so the king put on simple clothes to visit him. (iii) The hermit was digging the ground in front of his hut when the king visited him.

I think it's more waves

Answer:

This means that the Lewis dot structure for C2H6 must account for 14 valence electrons, either through bonding between atoms, or through lone pairs. So, the two C atoms are placed in the center of the molecule.

Answer:

B) the disease is caused by more than one factor

Explanation:

Just did the assignment:)

Answer:

The type of energy is potential energy

Answer:

An empty glass does not dip in water in upside down position because of air cavity present in it which doesnot let water enter the glass when kept it in upside down position

Answer:

B

Explanation:

Answer:

I think it effects it by how the fire being a chemical reaction since it has gas in it, it effects it by how the water pputs it out, and it stopping the chemical reactions

Explanation:

Answer:

F • t = m • Δ v

Explanation:

Answer:

aerobic fitness

Explanation:

i just looked it up lol

The force which acts vertically downward and tends to opposite vertical upward motion of objects. Hence, the rocket ship must leave the gravitational pull of the earth due to its mass.

Therefore, the rocket ship must leave the gravitational pull of the earth due to its mass.

Learn more :https://brainly.com/question/15091823?referrer=searchResults

Answer:

E = 16 J

Explanation:

Given that,

Mass of a book, m = 2 kg

Velocity of the book from the backpack, v = 4 m/s

We need to find the kinetic energy of the book falling out of the backpack. Due to the motion of the object, kinetic energy is possessed by it. It can be given by :

[tex]E=\dfrac{1}{2}mv^2\\\\=\dfrac{1}{2}\times 2\ kg\times (4\ m/s)^2\\\\=16\ J[/tex]

So, the kinetic energy of the book is 16 J.

Answer:

El carro decelera a una tasa de 0.833 metros por segundo cuadrado.

Explanation:

Inicialmente, convertimos la velocidad inicial del carro a metros por segundo:

[tex]v_{o} = 90\,\frac{km}{h}\times \frac{1}{3600}\,\frac{h}{s}\times 1000\,\frac{m}{km}[/tex]

[tex]v_{o} = 25\,\frac{m}{s}[/tex]

Si asumimos que el carro decelera de manera uniforme, entonces empleamos la siguiente ecuación cinemática para determinar la aceleración ([tex]a[/tex]), medida en metros por segundo al cuadrado:

[tex]a = \frac{v-v_{o}}{t}[/tex] (1)

Donde:

[tex]v_{o}[/tex], [tex]v[/tex] - Velocidades inicial y final, medidas en metros por segundo.

[tex]t[/tex] - Tiempo, medido en segundos.

Si sabemos que [tex]v_{o} = 25\,\frac{m}{s}[/tex], [tex]v = 20\,\frac{m}{s}[/tex] y [tex]t = 6\,s[/tex], entonces la deceleración del carro es:

[tex]a = \frac{20\,\frac{m}{s}-25\,\frac{m}{s} }{6\,s}[/tex]

[tex]a = -0.833\,\frac{m}{s^{2}}[/tex]

El carro decelera a una tasa de 0.833 metros por segundo cuadrado.

Answer:5250 N

Explanation: ig:iihoop.vince

The force of friction between the car's tires and the road is 5250 N

Centripetal force is the force that is perpendicular to an object moving in circular motion. It is given by:

F = mv²/r

where m is the mass of object, v is the velocity and r is the radius of circle.

Given that m = 700 kg, v = 30 m/s, r = 120 m, hence:

F = mv²/r = 700 * 30²/120 = 5250 N

The force of friction between the car's tires and the road is 5250 N

Answer:

vector R= vector B- vector D As A,B,C,D are edges of the parallelogram, A is parallel to D but opposite in direction.

Explanation:

Answer:

The 3-inch wire has greater resistance.

Explanation:

The only difference between the wires is their length. According to the formula for resistance, the longer wire will have greater resistance.

Ohm's law is a fundamental law of electrical circuits that describes the relationship between voltage, current, and resistance in a conductor. It states that the current flowing through a conductor between two points is directly proportional to the voltage across the two points and inversely proportional to the resistance between them. This law is named after Georg Simon Ohm, a German physicist who first stated it in 1827.

The mathematical equation for Ohm's law is:

V = IR

Where:

V is the voltage or potential difference measured in volts (V)

I is the current flowing through the conductor measured in amperes (A)

R is the resistance of the conductor measured in ohms (Ω)

This equation states that the voltage (V) applied across a conductor is equal to the product of the current (I) flowing through the conductor and the resistance (R) of the conductor.

In other words, Ohm's law tells us that if we increase the voltage applied to a conductor, the current flowing through it will also increase, assuming the resistance stays constant. Similarly, if we increase the resistance of a conductor, the current flowing through it will decrease, assuming the voltage stays constant.

Ohm's law is an essential concept in electrical engineering and is used extensively in the design and analysis of electrical circuits. It allows us to predict how changing the voltage, current, or resistance in a circuit will affect the other two variables.

Here in the question,

Assuming that the wires have the same cross-sectional area and are made of the same material, the longer wire will have greater resistance. This is because the resistance of a wire is directly proportional to its length and inversely proportional to its cross-sectional area.

The resistance of a wire can be calculated using Ohm's law: R = V/I, where R is resistance, V is voltage, and I is current. The resistance can also be calculated using the formula: R = ρL/A, where ρ is the resistivity of the material, L is the length of the wire, and A is the cross-sectional area of the wire.

Since the wires are made of the same material and have the same thickness, their cross-sectional areas will be the same.

Therefore, the only difference between the wires is their length. According to the formula for resistance, the longer wire will have greater resistance.

To learn more about Resistivity click:

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Answer:

The maximum height reached by the ball is 0.212 meters (21.2 centimeters).

Explanation:

In this case, the ball receives a potential energy from deformed spring and reaches its maximum height at the expense of such energy. By Principle of Energy Conservation, we define the phenomenon on the ball by the following model:

[tex]U_{k,1}+U_{g,1} = U_{k,2}+U_{g,2}[/tex] (1)

Where:

[tex]U_{k,1}[/tex], [tex]U_{k,2}[/tex] - Initial and final elastic potential energies, measured in joules.

[tex]U_{g,1}[/tex], [tex]U_{g,2}[/tex] - Initial and final gravitational potential energies, measured in joules.

By definitions of elastic and gravitational potential energies, we expand and simplify the equation above as follows:

[tex]\frac{1}{2}\cdot k\cdot x^{2} = m\cdot g \cdot \Delta y[/tex] (2)

Where:

[tex]m[/tex] - Mass of the ball, measured in kilograms.

[tex]g[/tex] - Gravitational acceleration, measured in meters per square second. .

[tex]\Delta y[/tex] - Height reached by the ball, measured in meters.

[tex]k[/tex] - Spring constant, measured in newtons per meter.

[tex]x[/tex] - Spring deformation, measured in meters.

If we know that [tex]k = 65\,\frac{N}{m}[/tex], [tex]x = 0.08\,m[/tex], [tex]m = 0.1\,kg[/tex] and [tex]g = 9.807\,\frac{m}{s^{2}}[/tex], then the maximum height reached by the ball is:

[tex]\Delta y = \frac{k\cdot x^{2}}{2\cdot m\cdot g}[/tex] (2)

[tex]\Delta y = \frac{\left(65\,\frac{N}{m} \right)\cdot \left(0.08\,m\right)^{2}}{2\cdot (0.1\,kg)\cdot \left(9.807\,\frac{m}{s^{2}} \right)}[/tex]

[tex]\Delta y = 0.212\,m[/tex]

The maximum height reached by the ball is 0.212 meters (21.2 centimeters).

They are because they don't know if viruses are alive and have a mind of its own or its just humans spreading it all around. Another reason is if they do find out they are alive or not they need to find solutions to kill them or to slow/stop the spreading.

Answer: Yes. you can search this question on the website quora

Explanation:

Answer:

4.8

Explanation:

Answer:  Radio waves, Microwaves infrared, optical ultraviolet, X-rays and gamma-rays

Answer:

c and D

Explanation:

Answer:

2:1

Explanation:

It is given that,

Two particles A and B move at a constant speed in circular paths at the same angular speed ω.

Particle A's circle has a radius that is the length of particle B's circle.

We need to find the ratio of vA/vB of their translational speeds.

As the angular speed is same. The relation between angular and linear speed is given by :

[tex]\omega=\dfrac{v}{r}\\\\\omega_A=\omgega_B\\\\\dfrac{v_A}{r_A}=\dfrac{v_B}{r_B}[/tex]

As [tex]r_A=2r_B[/tex]

So,

[tex]\dfrac{v_A}{2r_B}=\dfrac{v_B}{r_B}[/tex]

[tex]\dfrac{v_A}{v_B}=2[/tex]

So, the ratio of their translational speeds is 2:1.

Answer:

1111 m

Explanation:

The following data were obtained from the question:

Height (h) = 500 m

Horizontal velocity (u) = 110 m/s

Horizontal distance (s) =?

Next we shall determine the time taken for the pallet to get to the target. This can be obtained as follow:

Height (h) = 500 m

Acceleration due to gravity (g) = 9.8 m/s²

Time (t) =?

h = ½gt²

500 = ½ × 9.8 × t²

500 = 4.9 × t²

Divide both side by 4.9

t² = 500/4.9

Take the square root of both side.

t = √(500/4.9)

t = 10.1 s

Finally, we shall determine how far the pallet needs to be dropped in order to get to the target. This can be obtained as follow:

Horizontal velocity (u) = 110 m/s

Time (t) = 10.1 s

Horizontal distance (s) =?

s = ut

s = 110 × 10.1

s = 1111 m

Thus, the pallet must be dropped at a distance of 1111 m from the plane in order to get the target.

Answer:X = hor = 4 + (-5) = -1N.

Y = ver = 10 + (-6)

R = sqrt(x^2+y^2) = sqrt(1+16) = 4.12

tanA = Y / X = 4 / -1 = -4,

A = -76 deg, CW = 180-76 = 104 deg =

Explanation: