5 Select the correct answer. Which statement is true? OA. The speed of sound in air is inversely proportional to the temperature of the air. O B. The speed of sound in air is directly proportional to the temperature of the air. OC. The speed of sound in air is twice the temperature of the air. C D The speed of sound in air is not affected by the temperature of the air. ​

F = 6.0 x 10⁻⁸ N

Given

mass of 2 dump trucks = 1500 kg

distance = 50 m

Required

Gravitational force

Solution

Newton's Gravity Law:  

[tex]\rm F=G.\dfrac{m_1.m_2}{r^2}[/tex]

with F = gravitational force,  

G = gravitational constant,  

m1, m2 = mass of object,  

r = distance between two objects.  

Input the value :

F = (6.67.10⁻¹¹N.m² / kg² x 1500²) :  50²

F = 6.0 x 10⁻⁸ N

Answer:

The earth is exposed much more during the summer the hours of daylight is increased slightly

Explanation:

Answer:

4,000

Explanation:

Answer:

2000

Explanation:

Explanation:

Given that,

Mass of a skier, m = 55 kg

The vertical distance between start and finish is 10 m.

(a) The potential energy of a skier is given by :

[tex]E=mgh\\\\E=55\times 9.8\times 10\\\\=5390\ J[/tex]

(b) When she reaches the bottom of the hill, the potential energy is converted to kinetic energy. So,

[tex]5390=\dfrac{1}{2}mv^2\\\\v=\sqrt{\dfrac{2\times 5390}{55}} \\\\v=14\ m/s[/tex]

Hence, her potential energy is 5390 J and at the bottom of the hill she is moving with a speed of 14 m/s.

Explanation:

Given

Force (F) = 7 N

Displacement (d) = 8 m

work done (W) = ?

We know that

W = F * d

= 7 * 8

= 56 J

The work done in this case is 56 Joule.

Answer:

E i think.

Explanation:

The triple-point of water occurs at 273.16 K (0.01 °C) and a vapor pressure of 0.0060373 atm. At this point water can be solid, liquid and gas. So, option (D) is correct.

phase diagram: a graph that displays the limiting conditions for a substance's solid, liquid, and gaseous phases under changes in pressure, temperature, or another combination of variables, such as solubility and temperature.

The curves in the figure were derived from measurements taken at various pressures and temperatures, and they represent a typical phase diagram for a one-component system (i.e., one made up of a single pure chemical).

The combination of temperature and pressure at which a substance can exist in all three of its states—gas, liquid, and solid—is known as the triple point.

The Kelvin(K), the International System of Units' (SI) fundamental unit of thermodynamic temperature, is defined using the triple point of water. The triple-point of water occurs at 273.16 K (0.01 °C) and a vapor pressure of 0.0060373 atm.

Learn more about triple point here:

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Answer:

Indeed

Explanation:

Answer:

A roller coaster that is running heating up the rails

Explanation:

the enery is changing forms due to friction and cunduction

Answer: Cross-cutting features are always younger than the surrounding rock.

When material erodes before sediment is deposited on it, a geologic gap results.

Explanation:

The options include:

1. An unconformity is created when lava pours out on Earth’s surface.

2. Faults are the result of volcanic activity.

3. Intrusions and extrusions are sedimentary formations.

4. Cross-cutting features are always younger than the surrounding rock.

5. When material erodes before sediment is deposited on it, a geologic gap results.

The law of superposition simply states that when there is a layers of rocks, we would see that the younger layers will lie and be on top of the layers that are older.

Other tools that can help scientist with relative dating are:

• Cross-cutting features are always younger than the surrounding rock.

• When material erodes before sediment is deposited on it, a geologic gap results.

Explanation:

It's on Edge

Answer:

Liquid

Explanation:

Thw answer is liquid

Answer:

The soup still is cool, or since its recent it will take a while to get warmer

Explanation:

A person’s blood type depends on the type of protein marker, called an  Antigen, found on the cell membranes of the red blood cell.

A molecule known as an antigen is one that triggers the formation of an antibody and the immune system's response.

Large protein molecules known as antigens are found on the surface of pathogens like bacteria, fungi, viruses, and other foreign substances. When these dangerous substances enter the body, the body's immune system reacts by producing antibodies.

The ABO system distinguishes 4 major blood types:

Learn more about antigen here:

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Answer:

te puedo ayudar pero corazón y estrella

y ando buscando novia por si quieres ser mia

Explanation:

if g is 10ms^-1

answers are

1-10

2-20

3-30

4-40

5-50ms^-1

The chemical symbol for nitrogen is N

[tex]▪▪▪▪▪▪▪▪▪▪▪▪▪  {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪[/tex]

Chemical symbol for nitrogen is :

Answer:

false I wouldn't say its a consequence.

Answer:

you have to match the letters in the picture to the list of energy types

KE = 8887.5 J

Given

speed = 15 m/s

weight = 79 kg

Required

KE-Kinetic energy

Solution

Energy is the ability to do work  

Energy because its motion is expressed as Kinetic energy (KE) which can be formulated as:  

[tex]\large {\boxed {\bold {KE = \frac {1} {2} mv ^ 2}}}[/tex]

Input the value :

KE = 1/2 x 79 kg x 15² m/s²

KE = 8887.5 J

Answer:

KE = 8887.5 J

Answer:

A water H2O

Explanation:

H2O is composed of 2 hydrogens which is represented H2 and the hydrogen is combined with one oxygen which forms water which is H2O

Answer:

below

Explanation:

1.1115 im not sure tho

This frequency definition leads us to the simplest frequency formula: f = 1 / T . f denotes frequency and T stands for the time it takes to complete one wave cycle measured in seconds. The SI frequency unit is Hertz (Hz), which equals 1/s (one cycle per second)

[tex] \\ [/tex]

Hope It Helps!

Answer:

[tex]\mu =0.169704 Ns/m^2[/tex]

Explanation:

From the question we are told that

Area of plate[tex]a=1m^2[/tex]

Angle of inclination [tex]\theta=60 \textdegree[/tex]

Velocity [tex]v=0.75m/s[/tex]

Thickness of oil [tex]t=2mm[/tex]

Weight of plate [tex]w=90N[/tex]

Generally the equation for shear force is mathematically given by

[tex]F=mgsin45 \textdegree[/tex]

[tex]F=90sin45 \textdegree[/tex]

[tex]F=63.639N[/tex]

[tex]F=\mu* \frac{v}{t}[/tex]

[tex]F=\mu* \frac{0.75}{2*10^-^3}[/tex]

[tex]\mu* \frac{0.75}{2*10^-^3}=63.639N[/tex]

[tex]\mu =\frac{63.639}{375}[/tex]

Therefore viscosity is given by

[tex]\mu =0.169704 Ns/m^2[/tex]

Answer:

B. I DID IT AND GOT IT RIGHT

Explanation:

Answer:

It is B

Explanation:

i did this one

Answer:

Centi is the metric prefix for 0.01

Answer:

24° north of east

Explanation:

tan(x)=90/200 ie x=arctan(90/200)=24°

So the plane took off 24° east.

Answer:

24° north of east

Explanation:

Hope this will help

Answer:

Their differences are most likely due to non shared environmental influences

Answer:

942.75J

Explanation:

Change in thermal energy is equal to the mass of the given substance times the specific heat capacity times the temperature change.

We've already been given the specific heat capacity, the mass as well as the initial and final temperatures.

So change in temperature will be 35° - 20° = 15°

Thermal energy change = 15 × 15 × 4.19

The final answer is 942.75J

Hope that helped.