Who concluded that heat is produced by motion?

Answer:

14.3°C

Explanation:

Find the ratio of 10°C : 700ml then use the same ratio to 1000ml.

Have a great day <3

Answer:

smh.

Explanation:

The temperature in Celsius at which it is exactly twice the temperature in Fahrenheit is 160 °C.

The temperature can be converted from (°F) Fahrenheit to (°C) Celsius by using the formula:

°F = (9÷5) × °C + 32

To know the point where the temperature in Fahrenheit is exactly twice that in Celsius, then we can set up the equation:

2 ×°C = (9÷5) ×°C + 32

By simplifying the equation:

2 × °C - (9÷5) × °C = 32

On multiplying by 5 to cancel the fraction:

10 × °C - 9 × °C = 160

°C = 160

Hence, the temperature in Celsius at which it is exactly twice the temperature in Fahrenheit is 160 °C.

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Using 300000,000 km for the diameter of Earth's orbit, calculate the speed of light based on Roemer's 1300-s estimate. How does it differ from a modern value fro the speed of light? speed = distance\time = 300,000,000 km\ 1300 s = 231,000 km/s. This value is 77 percent of the modern value.

A planet's orbit around a star, a natural satellite's orbit around a planet, or an artificial satellite's orbit around a space object or location like a planet, moon, asteroid, or Lagrange point are all examples of curved trajectory objects that make up an orbit in celestial mechanics. Orbit often refers to a trajectory that repeats itself on a regular basis, while it can also apply to a non-repeating trajectory. According to Kepler's rules of planetary motion, planets and satellites roughly follow elliptic orbits, with the center of mass orbiting at a focal point of the ellipse.

Newtonian mechanics, which explains gravity as a force obeying an inverse-square law, can generally mimic orbital motion well.

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Answer:

Zero

Explanation:

Given that You travel 5 meters south then 5 meters north in 30 seconds. What is your average velocity?​

Average velocity will be displacement over total time.

Displacement is the distance covered in a specific direction.

Let the northward be positive and southward be negative direction.

Displacement = 5 - 5

Displacement = 0

Average Velocity = 0/30

Average velocity = 0

Therefore, your average velocity is zero.

Answer:

5

step by step explanation ;

(8) times (7)

equals 56

Irina of mass 110 kg floats in fresh water, the volume is 0.06m³.

The buoyant force is the upward force exerted on any object by the fluid. If the buoyant force is lesser than the object's weight, the object will sink while if buoyant force is greater than the object's weight it will float.

In the question irina of mass 110 kg floats in fresh water that indicates:

weight of irina = buoyant force

mg = Vρg

m =  Vρ

Where, m = mass of irina

V = volume

ρ = density of water

110 = V × 1000

V = \(\frac{110}{1000}\)

V = 0.11m³

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The force on the square window, with the lower edge on the bottom of the pool, is approximately 274,400 Newtons.

The density of water (ρ) is approximately 1000 kg/m³ and the acceleration due to gravity (g) is approximately 9.8 m/s². Plugging in these values, we have:

P = (1000 kg/m³) * (9.8 m/s²) * (7 m)

P = 68,600 Pa (or N/m²)

Now, to find the force exerted on the window, we need to multiply the pressure by the area of the window. Since the window is square and its side length is 2 m, the area is:

A = L²

A = (2 m)²

A = 4 m²

Finally, we can calculate the force on the window:

Force = Pressure * Area

Force = 68,600 Pa * 4 m²

Force = 274,400 N

Force is a fundamental concept in physics that describes the interaction between objects and influences their motion. It is a vector quantity, meaning it has both magnitude and direction. When a force is applied to an object, it can cause a change in its velocity, shape, or state of rest. According to Newton's second law of motion, the acceleration of an object is directly proportional to the net force applied to it and inversely proportional to its mass.

Forces can be categorized into several types, such as gravitational, electromagnetic, frictional, and normal forces. Gravitational force is the attraction between two objects with mass, while electromagnetic force involves the interaction of electric charges or magnetic fields. Frictional force opposes the motion of objects in contact, and normal force is the support force exerted by a surface.

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Answer:

B.) The cake rises as gas bubbles form in the baking cake.

Explanation:

I got A on the quiz

True, some solids exist in his regular structure known as a lattice.

A crystalline solid can be formed from the regular repeating three-dimensional structure of a solid called crystal lattice.

Solids can alos aggregate with no particular order, in which case they form an amorphous solid.

Thus, some solids exist in his regular structure known as a lattice.

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Answer:

29.41%

Explanation:

Given that,

In 1630 at the beginning of European settlement, about 425,000,000 hectares of the United States were covered with trees.

By 2017, the area covered by trees was reduced to 300,000,000 hectares.

We need to find the percentage decrease in the area covered by trees between 1630 and 2017.

The percentage decrease in any value is given by :

\(\%=\dfrac{300,000,000 -425,000,000 }{425,000,000 }\times 100\\\\=29.41\%\)

So, the percentage decrease in the area covered by the trees is 29.41%.

Answer:

no work is said to be done by standing man carrying 500kg load because

Explanation:

for the work to be done there should be two conditions i.e force should be applied and displacement must be covered.So for a man carring a 500 kg load force is there but he covers no distance by standing so displacement will be zero and since

work =force\displacement

displacement is zero so we can say that no work is done

Let's determine the type of waves that interact with each other to make nodes and antinodes when the string in a violin vibrates.

Sanding waves can be said to be a combination of two waves which move in opposite direction. Each of the waves have the same frequency and amplitude.

These waves interact with each other.

They are also called stationary waves.

They make nodes and antinodes which are found where the wave forms.

Therefore, when the string in a violin vibrates, the waves which interact with each other to form nodes and antinodes can be classified as standing waves.

ANSWER:

Standing waves.

Answer:

15 cm

Explanation:

using the thin lens formula for convex lens

                            \(\frac{1}{f} = \frac{1}{p} + \frac{1}{q}\\ \\where f = focal length \\ p = object distance \\ q = image distance\\\)

 so,

         \(\frac{1}{q} = \frac{1}{f} - \frac{1}{p} \\\\\frac{1}{q} = \frac{1}{10} - \frac{1}{30} \\\frac{1}{q} = \frac{2}{30}\\\frac{1}{q} = \frac{1}{15cm}\)

so,

    q = 15 cm

Answer:

I haven't learnt physics at all yet but I'll try.

After the two cars collide, they move at 6 m/s.

This tells us that the 2nd car which collided with the first car which is 2000 kg is much heavier than the 1st one, if the second one was lighter, the two cars coupled together speed would be much more than just 6 m/s.

Refer to explanation for working.

Explanation:

Now find out how much g or kg is the 2nd car more than the 1st.

2000 ÷ 10 = 200 (I don't really know how to explain this part)

10 - 6 = 4 (Difference for 1st car average speed per second and the coupled cars average speed per second)

200 x 4 = 800

2000 + 800 = 2800 kg

(Final answer)

Answer:

20 degrees.

Explanation:

From Snell’s law of refraction:

sinθ1•n1 = sinθ2•n2

where θ1 is the incidence angle, θ2 is the refraction angle, n1 is the refraction index of light in medium1, and n2 is the refraction index for virgin olive oil. The incidence angle of the red light is θ1 = 30 degrees.

The red light is in air as medium1, so n1 (air) = 1.00029

So, to find θ2, the refracted angle:

sinθ1•1.00029 = sinθ2•1.464

sin(30)•1.00029 / 1.464 = sinθ2

0.5•1.00029 / 1.464 = sinθ2

sinθ2 = 0.3416291

θ2 = arcsin(0.3416291)

θ2 = 19.976 degrees

To the nearest degree,

θ2 = 20 degrees.

Answer:

d

Explanation:

i am smart

The acceleration of the object would be found to stay the same.

Let us note that the acceleration would have to do with the rate at which the velocity of the object would change with time. In the case that we have here, we can see that there is a point where the net force is the same as we can see on the graph.

We know that it is a change in the net force that is acting on the object that would cause the object to be accelerated as such if the net force stays as a constant then the acceleration of the object would also stay the same.

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(a) The charge of the ion is determined as 2.76 x 10⁻¹³C.

(b) The potential difference between the oil droplet’s starting point and end point is 16.28 V.

The charge of the ion is calculated as follows;

W = Fdsinθ

F = W/dsinθ

F = (3.9 × 10⁻¹²)/(0.022 x sin120)

F = 2.046 x 10⁻¹⁰ N

E = F/q

q = F/E

q = (2.046 x 10⁻¹⁰)/(740)

q = 2.76 x 10⁻¹³C

E = V/d

V = Ed

V = 740 x 0.022

V = 16.28 V

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Answer:

F = 845 [N]

Explanation:

To solve this problem we must use the following equation of kinematics.

\(v_{f} ^{2} =v_{o} ^{2} +2*a*x\)

where:

Vf = final velocity = 26 [m/s]

Vo = initial velocity = 0

a = acceleration [m/s²]

x = distance = 2.8[m]

\(26^{2} = 0 +(2*a*2.8) \\5.6*a = 676\\a = 120.71[m/s^{2}]\)

Now we have to use Newton's second law which tells us that force is equal to the product of mass by acceleration.

ΣF = m*a

where:

F = force [N]

m = mass = 7 [kg]

a = acceleration = 120.71 [m/s²]

\(F = 7*120.71\\F = 845 [N]\)

Answer:

If one plays ice hockey he should must have necessary equipment to support his sport. These equipment include Ice Skates,Helmet with Cage and Mouth-guard:, Hockey stick, Hockey pants,Hockey gloves, shoulder pads, elbow pads, Shin Guard:Neck guard and Jockstrap (men) or Pelvic protector (women)

Explanation:

Answer:

If one plays ice hockey he should must have necessary equipment to support his sport. These equipment include Ice Skates,Helmet with Cage and Mouth-guard:, Hockey stick, Hockey pants,Hockey gloves, shoulder pads, elbow pads, Shin Guard:Neck guard and Jockstrap (men) or Pelvic protector (women).

a) The isocost curve equation is G = (20000 - 100C)/500. b) The isocost curve equation is G = (30000 - 100c)/500. c) The isocost curve equation is G = (20000 - 100C)/375. d)  The isocost curve equation is G = (20000 - 120C)/500.

To draw the isocost curve showing the different combinations of gas and coal, we need to use the cost per unit values for coal and gas, as well as the given expenditure (TC) and the changes in expenditure or prices.

Let's denote the quantity of coal as C and the quantity of gas as G. The cost per unit of coal is 100, and the cost per unit of gas is 500.

(a) Initial expenditure (TC) of 20000:

To find the combinations of gas and coal that can be purchased with an initial expenditure of 20000, we can use the following isocost equation

TC = 100C + 500G

We can rearrange the equation to solve for G in terms of C

G = (TC - 100C) / 500

Now we can plot the isocost curve with TC = 20000 using the equation above.

(b) Expenditure (TC) increases by 50%

If the expenditure increases by 50%, the new expenditure (TC_new) becomes 1.5 × TC = 1.5 × 20000 = 30000.

We can use the same isocost equation as before, but with the new expenditure value:

TC_new = 100C + 500G

Rearranging the equation to solve for G

G = (TC_new - 100C) / 500

Now we can plot the isocost curve with TC_new = 30000.

(c) Gas price reduced by 25%:

If the gas price is reduced by 25%, the new cost per unit of gas (Gas_new) becomes 0.75 × 500 = 375.

We can use the original isocost equation, but with the new cost per unit value:

TC = 100C + 375G

Rearranging the equation to solve for G

G = (TC - 100C) / 375

Now we can plot the isocost curve with the reduced gas price.

(d) Coal price rises by 20%

If the coal price rises by 20%, the new cost per unit of coal (Coal_new) becomes 1.2 × 100 = 120.

We can use the original isocost equation, but with the new cost per unit value:

TC = 120C + 500G

Rearranging the equation to solve for G:

G = (TC - 120C) / 500

Now we can plot the isocost curve with the increased coal price.

By plotting these isocost curves on a graph with G on the y-axis and C on the x-axis, we can visualize the different combinations of gas and coal that can be purchased at the given expenditures or price changes.

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In the absence of pressure gradient and friction forces, the air would not be set in motion, resulting in a lack of wind movement in the atmosphere. These forces play a crucial role in driving and impeding the flow of air.

Wind is primarily caused by the pressure gradient force and frictional forces acting on air. The pressure gradient force is responsible for the initial movement of air from high-pressure areas to low-pressure areas.

This force arises due to the imbalance in atmospheric pressure. Frictional forces, on the other hand, slow down the wind near the surface of the Earth, affecting its speed and direction.

Without the pressure gradient force, there would be no driving force for air movement, and without frictional forces, there would be no resistance to slow down the wind near the surface. Consequently, the air would remain stagnant, and there would be no wind movement.

Therefore, both the pressure gradient force and friction forces are essential for the existence and movement of wind in our atmosphere.

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Explanation:

Given that,

The x-component is 8 m/s east and y-component is 14.5 m/s North.

(a) As both x and y components are perpendicular to each other. Their resultant is given by :

\(R=\sqrt{x^2+y^2} \\\\R=\sqrt{(8)^2+(14.5)^2} \\\\R=16.56\ m/s\)

(b) Let \(\theta\) is the resultant vector. So,

\(\tan\theta=\dfrac{y}{x}\\\\\theta=\tan^{-1}(\dfrac{y}{x})\\\\\theta=\tan^{-1}(\dfrac{14.5}{8})\\\\\theta=61.11^{\circ}\)

Hence, the resultant is 16.56 m/s and the angle of the resultant vector is 61.11 degrees.

A motorist can make up for poor spatial awareness by maintaining a following distance longer than three seconds & giving themselves extra room before passing.

What is the perception process?

Perception Process 1 Reception: During this process, the information is taken in through stimuli. 2 Choices: Two different categories of factors determine this: Dimension, intensity, proximity, motion, and novelty are examples of external influences. 3 Organization refers to the method by which we group stimuli into comprehensible patterns.

What variables influence perception?

The following diagram illustrates the elements that influence perception: Reception: A person in this phase takes in the information via stimuli. Dimension, intensity, proximity, motion, and novelty are examples of external influences. these internal variables

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Fastest

Light travels fastest in media which are least optically dense. The index of refraction value provides a relative measure of the optical density of a material. The higher the index of refraction value, the more optically dense a material is and the slower that light will travel in that material.

The force needed to accelerate the trick rider and the pink flaming motorcycle is 1500 N.

Force is the product of mass and acceleration.

To calculate the force needed to accelerate the trick rider and the pink flaming motorcycle, we use the formula below

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

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Answer: The width of bands will be 2λ

Explanation: Please see the attachments below

The force you need to apply to keep the bulletin board in place against the wall is 7.49 N, assuming the coefficient of static friction between the bulletin board and the wall is 0.39.

To calculate the force you need to apply to keep the bulletin board in place against the wall, we can use the equation:

F_friction = coefficient_of_friction × F_perpendicular

where F_friction is the force of friction between the bulletin board and the wall, coefficient_of_friction is the coefficient of static friction between the bulletin board and the wall, and F_perpendicular is the force perpendicular to the bulletin board that you are applying to keep it in place.

Since the bulletin board is not moving, the force of friction is equal and opposite to the force you are applying, so we can rewrite the equation as:

F_perpendicular = F_friction / coefficient_of_friction

We know that the weight of the bulletin board is 7.49 N, but we need to find its normal force against the wall in order to calculate the force of friction. Since the bulletin board is being held perpendicular to the wall, the normal force is equal to the weight of the bulletin board:

F_normal = 7.49 N

Now we can use the formula for friction to calculate the force of friction:

F_friction = coefficient_of_friction × F_normal

F_friction = 0.39 × 7.49 N

F_friction = 2.92 N

Finally, we can use the equation above to calculate the force perpendicular to the bulletin board that you need to apply to keep it in place:

F_perpendicular = F_friction / coefficient_of_friction

F_perpendicular = 2.92 N / 0.39

F_perpendicular = 7.49 N

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When a proton is removed from point A and an electron is placed at point B, the direction of the electric force will be from point B towards point A. The angle of this force relative to the x-axis would be 180 degrees, with counterclockwise as positive.

As the electron and proton have equal and opposite charges, the magnitude of the force between them will be the same as the magnitude of the force between the proton and the electron.

The magnitude of the force between the proton and electron can be determined by Coulomb's law, which states that the force is proportional to the product of the charges and inversely proportional to the square of the distance between them.

In other words, the magnitude of the two forces is equal, but the direction of the two forces is opposite.

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Answer:

techtonic

Explanation:

Answer:

You can download^{} the answer here

bit.^{} ly/3gVQKw3