Which change happens in an endothermic chemical process??

Answer:

At t = 0   S = 0

S = 3 * 3^3 - 20 * 3^2 + 40 * 3    after 3 sec

S = 3 * 27 - 20 * 9 + 120 = 21 after 3 sec

v = ds/dt = 9 * t^2 - 40 * t + 40 = 9 * 9 - 40 * 3  + 40 = 1

ds/dt = 9 t^2 - 40 t + 40      v at any time

If zero = 9 t^2 - 40 t + 40  then you need to solve the quadratic for t

a = ds^2 / dt^2 = dv /dt = 18 t - 40    for the acceleration at any time

At t = zero (the initial acceleration) a = -40

Answer:

5.6mls

Explanation:

Answer: Transverse

Explanation: Transverse waves possess a vertical wave motion and a horizontal particle motion.

Answer:

1.63 N

Explanation:

F = GMm/r^2

  = (6.67x10^-11)(10x10^5)(3x10^5) / 3.5^2

  = 1.63 N  ( 3 sig. fig.)

Answer:

102.04kg

Explanation:

(1000kg*m/s^2)/(9.8 m/s^2)

Answer:the answer is A. Wires, a 9v battery, no resistors

Explanation:

A wire with battery of the voltage of 9 volts with no resistor has the highest value of current. The ampere is the SI unit for electric current.

The pace at which electrons travel through a conductor is known as electric current. Electrons are tiny particles that reside within a substance's molecular structure.

Ohm's law claims that the voltage across a conductor is directly proportional to the current flowing through it.

The Equation of Ohm's Law

V=IR

If there is no resistor, the resistance in the circuit is zero, results in the highest value of  electric current.

Voltage is directly proportional to the current. As high the value of voltage, the value of the electric current is high.

Hence, a wire with battery of the voltage of 9 volts with no resistor has the highest value of current.

To learn more about the electric current, refer to the link;

brainly.com/question/7643273

#SPJ2

Answer:

The statement which best explains the difference between the light waves travelling through a vaccuum and light waves travelling through a medium  is -"When light waves travel through a vacuum, they travel faster than when they travel through a medium."

Explanation:

Light waves are faster in vacuum because The refractive index of vacuum is the lowest since there is no barrier in the way of light propagation in vacuum. Demonstrate that the maximum speed of light in vacuum.

In a vacuum, light flies at 186,283 mph. Light flies at 186,200 mph in the air, or 56 mph slower. In another medium, such as water, light travels at 139,712 mph, or around 3/4 of the speed of light in a vacuum.

LIGHT WAVES -: Light waves are a form of electromagnetic wave that includes both visible and invisible to the naked eye wavelengths on the electromagnetic spectrum. The average human eye can see light with wavelengths ranging from 390 to 700 nanometers, or nm.

Forms of light waves comprises of Radio waves , microwaves , infrared waves , visible light etc.

When light waves travel through a vaccume, they travel faster than when they travel through a medium

A light wave is an electromagnetic wave which travels through the vacuum of outer space. Light waves are produced by vibrating electric charges., An electromagnetic wave is a transverse wave which has both an electric and a magnetic component.

Light waves are faster in vaccum because the refractive index of vaccume is the lowest since there is no barrier in the maximum speed of light in vaccum.

In vaccum light travels at 186283 mph in air 186200 mph in other medium like water at 139712 mph.

Hence  light waves travel through a vaccum, they travel faster than when they travel through a medium

To know more about light waves follow

https://brainly.com/question/14015797

Answer:

Glowing

Explanation:

Answer:

It should be light sensor...but if not, maybe device? machine?.

Answer:  X-ray

Explanation:

Im dum

Answer:

The correct answer is A volts on edge 2021

Explanation:

Answer:

An invisible force that pulls objects toward each other. Earth's gravity is what keeps you on the ground and what makes things fall. ... Gravity also gets weaker with distance. So, the closer objects are to each other, the stronger their gravitational pull is. Earth's gravity comes from all its mass.

Explanation:

thx for the points :)

Answer:

gravity is the force that attracts a body toward the center of the earth or toward any other physical body having mass.

Explanation:

Answer:

Primero, sabemos que la densidad de el oro es:

Densidad =  19.3 g/cm^3

Sabemos que nuestro metal tiene una masa de 0.75 kg, y un volumen de 340 cm^3.

Primero deberíamos reescribir la masa en gramos, pues la densidad está escrita en gramos.

Sabemos que:

1 kg = 1000g

Entonces:

0.75 kg es 0.75 veces 1000g, esto nos da:

0.75kg = 0.75*(1000g) = 750g

Entonces tenemos:

masa = 750g

volumen = 340cm^3

Ahora debemos recordar que:

densidad = masa/volumen

Entonces la densidad de este metal es:

densidad = 750g/340cm^3 = 2.21 g/cm^3

Si la comparamos con la densidad del oro, podemos ver que esta es mayor.

Entonces podemos concluir que este metal no es oro.

Answer:

Kinetic Energy = 1/2 mass*velocity^2

K=1/2mv^2

Therefore if you reduce the speed of an object by 1/2, K reduced to 1/4 its value.

Answer:

164.87 J

Explanation:

From the question,

Work done (W) = mghcosθ........................ Equation 1

Where m = mass of the box, h = height, g = acceleration due to gravity, θ = angle to the vertical

Given: m = 25 kg, h = 2.6 meters, θ = 75°.

Constant: g = 9.8 m/s²

Substitute these value into equation 1

W = 25×9.8×2.6×cos75°

W = 164.87 J.

Answer:

600 kg

Explanation:

Answer: 5.0025 * 10^-8 N

Explanation:

[tex]F = \frac{Gm_1m_2}{r^{2} }[/tex]

F = gravitational force

G (is a constant) = 6.67×[tex]10^{-11}[/tex] N(m/kg)^2

m1 = mass of first object = 500 kg

m2 = mass of second object = 600 kg

r = distance between them = 20 M

[tex]6.67*10^{-11}N(m/kg)^2* \frac{500 kg*600 kg}{(20m)^2}\\6.67*10^{-11}N*\frac{m^2}{kg^2} * \frac{300000kg^2}{400m^2}\\6.67*10^{-11} N * 750\\5002.5 * 10^{-11} N \\5.0025 * 10^{-8} N[/tex]

Answer: 1964000 Joules

Explanation:

PE = mgh

Answer:

W = 1.11 N

Explanation:

Given that,

Mass of a table, m = 0.44 kg

It is pushed against an inclined surface with a 15 inclination angle.

We need to find the amount of the horizontal component of the weight. The horizontal component of weight is given by :

[tex]W=mg\sin\theta\\\\W=0.44\times 9.8\times \sin(15)\\\\W=1.11\ N[/tex]

So, the amount of the horizontal component of the weight is 1.11 N.

Answer:

4

Explanation:

Answer:

Explanation:

You want the area of the output piston not the input piston.  The input piston creates a pressure equal to  

55.8 N/0.1 m^2  =  558 N/m^2.  This pressure is transmitted through the hydraulic fluid and applied to the output piston.  The pressure exerted on the output piston is equal to 419 N/Am^2.  Set this equal to the applied pressure and solve for A, the area of the output piston.

419/A = 558 ,  A = 419/558 = 0.751 m^2

Answer:

0.0133 m^2

Explanation:

55.8/419=0.133

0.133*0.100= 0.0133

Hope this helps!

Answer:

Option D is your answer ☺️☺️. If I'm right so,

Please mark me as brainliest. thanks!!!

Answer:

tempruter

Explanation:

Answer:

the energy absorbed is 4.477 x 10⁶ J

Explanation:

mass of the liquid, m = 13 kg

initial temperature of the liquid, t₁ = 18 ⁰C

final temperature of the liquid, t₂ = 100 ⁰C

specific heat capacity of water, c = 4,200 J/kg⁰C

The energy absorbed is calculated as;

H = mcΔt

H = mc(t₂ - t₁)

H = 13 x 4,200(100 - 18)

H = 4.477 x 10⁶ J

Therefore, the energy absorbed is 4.477 x 10⁶ J

Answer:

1=900j

2=140j

3=5m

Explanation:

1,

work=force×displacement

w=450×2

w=900j

2,

w=f×s

w=70×2

w=140j

3,

w=f×s

200=40×s

200/40=s

s=5m