Four factors that affect the rate heat transfers through solids

1.Explain how you calculate the net force in any direction on the box.

If the two horizantal (left to right) forces act on an object in opposite directions and they don't exactly cancel out, what is left over is the net force In the diagram, the net force is 50 Newtons.

The equation you have to do (100 N - 50 N = 50 N).

If the two vertical (up and down) forces act on an object in opposite directions and they do cancel out, what is left over is the net force In the diagram, the net force is 0 Newtons. The equation you have to do. (25 N - 25 N = 0 N)

Final Answer: 50 N

2.Suppose an upward force of 15 N is added to the box. What will be the net vertical force on the box?

The net vertical force ( up and down) would be 15 N  

3.What force could be applied to the box to make the net force in the horizontal direction zero? Explain.

You could apply another horizontal (left to right) force of 50 N then the horizontal net force would be 0 N

4.Suppose a force of 25 N to the right is added to the box. What will be the net force to the right?

If suppose I say I added a horizontal (left to right) net force of 25 right next to the 50 N. The net force for the whole box would be 25 N.

1. The net force in any direction is calculated by calculating the net horizontal force and the net vertical force on the box.

Newton's Second Law states that The resultant force acting on an object is proportional to the rate of change of momentum.

The mathematical expression for Newton's second law is as follows

F = ma

2. If an upward force of 15 N is added to the box, then the net vertical force on the box would be 15 N in the upward direction because earlier the net vertical force on the box was 0 N.

3. A force of 50 N to the right could be applied to the box to make the net force in the horizontal direction zero.

4. If a force of 25 N to the right is added to the box then the net force o the right would be 75 N.

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Answer:

Light waves slow down as they travel from gas to solid.

Explanation:

The speed of light is often quoted with reference to a vacuum. Light travels fastest in a vacuum and in a gas.

When light travels through other media such as solids or liquids, the speed of light is decreased due to absorption and scattering of photons by molecules as well as remissions.

Hence the speed of light decreases from gas to solid.

Force equals mass time acceleration. Weight is a force and it can replace force in the equation. The acceleration would be gravity, which is an acceleration.

1.)

Fw (weight) = m (mass) · g (gravity, 9.8 m/s²)

Fw = m * 9.81 m/s²

560N = m · 9.81 m/s²

m ≈ 57.08 kg

2.)

d = 350 meters

t = 65 seconds

velocity = d/t

velocity = 350 meters / 65 seconds

velocity ≈ 5.38 meters/sec

3.)

Force = 35N

Distance = 2 meters

Work = Force · Distance

Work = 35N · 2 meters

Work = 70 J

Answer:

m = 2500 [kg]

Explanation:

Newton's Second Law tells us that the sum of forces on a body is equal to the product of mass by acceleration.

∑F = m*a

where:

∑F = sum of the forces = 5.5 [kN] = 5500 [N]

a = acceleration = 2.2 [m/s²]

m = mass [kg]

Now clearing the mass [kg]

[tex]F=m*a\\m=F/a\\m = 5500/2.2\\m=2500 [kg][/tex]

Answer:

a nuclear reaction in which a heavy nucleus splits spontaneously or on impact with another particle, with the release of energy.

Explanation:

i hope it's helpful

Answer:

The splitting of a nucleus

Explanation:

It is a correct answer for ap e x, hope it helps! :)

The approximate temperature at the South Pole is equal to -47.7 °C.

Fahrenheit to Celsius formula can be used to change the temperature from the scale Fahrenheit to Celsius. Both scales are utilized to determine the temperature and it offers a way to determine the object’s hotness and coldness. The symbol used to express Fahrenheit is °F. Similarly, the symbol used to represent Celsius is °C. The Celsius scale of temperature is also called centigrade scale.

Fahrenheit to Celsius formula is commonly used to convert the given temperature in Fahrenheit to Celsius.

[tex]^oC =(^oF-32)\times \frac{5}{9}[/tex]

Where F is the temperature in Fahrenheit and C is the temperature in Celsius.

Given, the temperature in Fahrenheit = -54 °F

The temperature in Celcius at the South Pole can be calculated as:
T (°C) = (-54 -32) × (5/9)

T (°C) = -47.7 °C

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Answer:

The earth is a vast, complex system powered by two sources of energy: an internal source (the decay of radioactive elements in the geosphere, which generates geothermal heat) and an external source (the solar radiation received from the Sun); the vast majority of the energy in the earth system comes from the Sun.

Explanation:

becuse

Answer:

The car is 72.75 miles away from its starting position.

Explanation:

First, remember the relation:

distance = time*speed.

Also, the distance between two points (a, b) and (c, d) is:

D = √( (a - c)^2 + (b - d)^2)

For this problem, we can assume:

The North is equivalent to the y-axis, and the East is equivalent to the x-axis.

We also assume that the initial position of the car is (0mi, 0mi)

Now the car moves to the East at a speed of 52mi/h for one hour, then the new position of the car is:

(0mi, 0mi) + (52mi/h*1h, 0mi) = (52mi, 0mi)

Now the car travels 30 mins (or 0.5 hours) to the northeast at a speed of 52mi/h.

We can assume that it moves at an exact angle of 45° from East to North, then the components of the speed can be written as:

Sx = speed in the x-axis = 52mi/h*cos(45°) = 36.77 mi/h

Sy = speed in the y-axis = 52mi/h*sin(45°) =  36.77 mi/h

Then the new position of the car is:

(52mi, 0mi) + (36.77 mi/h*0.5h, 36.77 mi/h*0.5h) = (70.385 mi, 18.385 mi)

Now we know the final position of the car.

The distance between the final position (70.385 mi, 18.385 mi) and the initial position (0mi, 0mi) is:

D = √( (70.385 mi - 0mi)^2 + (18.385 mi - 0mi)^2) = 72.75 mi

The car is 72.75 miles away from its starting position.

Answer:

No.

Explanation:

Answer:

decreases by 2

Explanation:

The angular speed of the ferris wheel decreased by a factor of 2.

The angular speed of an object is the rate of change of angular displacement with time.

v = ωr

[tex]r = \frac{\omega }{v} \\\\\frac{\omega_1 }{v_1} = \frac{\omega_2 }{v_2} \\\\\omega_2 = \frac{\omega _1 v_2}{v_1} \\\\\omega _2 = \frac{\omega _i \times v}{2v} \\\\\omega _2 = \frac{1}{2} (\omega _1)[/tex]

Thus, the angular speed of the ferris wheel decreased by a factor of 2.

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Answer:

the relative speed should be 40mph

Explanation:

Answer:

1200 kg?

Explanation:

Answer: C. Bedrock structure and evolution of land surfaces.

Explanation:

Landscape has to do with the visible features of a particular area of land, and its landforms, and their integration with the both the man-made features and the natural features.

The characteristics best distinguish one landscape region from another include the bedrock structure and evolution of land surfaces.

Answer:

If force is applied to cause the motion of the body

Explanation:

In the setup given in this diagram, potential energy can be converted into kinetic energy by applying force on the cart or object to move it down the slope.

Potential energy is the energy due to the position of a body. The body has huge potential energy at its current position.

Kinetic energy is the energy due to the motion of a body.

As the body moves down the slope and its velocity increases, it gains massive kinetic energy.

Down the slope, the kinetic energy increases as the potential energy decreases.

At the bottom of the slope, the potential energy becomes zero and the kinetic energy is at its maximum.

Answer:

Momentum

Explanation:

If we change how fast an object is going and change its mass, then we have changed its momentum.

The momentum of body is the quantity of motion such a body can possess.

It is mathematically expressed as:

   Momentum  = mass x velocity

Therefore, if we vary mass and velocity or either of them, then, the momentum of the object will also change.

Mass and velocity is very crucial to the momentum of a body.

Answer:

47.2m

Explanation:

Answer:

Fructose

Explanation:

Hope this helps!

Answer:

a. RT = 9 Ohms

b. RT = 0.5 Ohms

Explanation:

Let the two resistors be A and B.

Let RT be equivalent resistance.

Given the following data;

Resistor A = 6ohms

Resistor B = 3ohms

a. To find the equivalent series resistance;

RT = RA + RB

RT = 6 + 3

RT = 9 Ohms

b. To find the equivalent parallel resistance;

RT = 1/RA + 1/RB

Substituting into the equation, we have

RT = 1/6 + 1/3

RT = 3/6

RT = 0.5 Ohms

As here the 6 ohm and 3 ohm resistors are first connected in series and then parallel, so we can just find out the equivalent series resistance by the formula of it, which is the individual sum of all resistors (for series) and for parallel combination, the reciprocal of the total resistance is the individual reciprocal sum of all resistors, so if we apply same Formula here for series first, then we will be having :

[tex]{:\implies \quad \sf R_{s}=6+3}[/tex]

[tex]{:\implies \quad \boxed{\bf{R_{s}=9\Omega}}}[/tex]

Now, for parallel combination:

[tex]{:\implies \quad \sf \dfrac{1}{R_{p}}=\dfrac13 +\dfrac16}[/tex]

[tex]{:\implies \quad \sf \dfrac{1}{R_{p}}=\dfrac{2+1}{6}}[/tex]

[tex]{:\implies \quad \sf \dfrac{1}{R_{p}}=\dfrac36}[/tex]

[tex]{:\implies \quad \sf \dfrac{1}{R_{p}}=\dfrac12}[/tex]

[tex]{:\implies \quad \boxed{\bf{R_{p}=2\Omega}}}[/tex]

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Answer:

Chemical energy, Energy stored in the bonds of chemical compounds. Chemical energy may be released during a chemical reaction, often in the form of heat; such reactions are called exothermic.

Answer: infinite number of times

Explanation:

Answer:

710kg

Explanation:

Given parameters:

Weight of race car = 6958N

Unknown:

Mass of the race car  = ?

Solution:

The weight of a body is the force of gravity acting on that body. It is mathematically expressed as:

  Weight  = mass x acceleration due to gravity

Acceleration due to gravity  = 9.8m/s²

  6958 = mass x 9.8

        mass  = 710kg

Answer:

Scalar quantity

Vector quantity

Explanation:

A scalar quantity is a quantity that is fully described by magnitude alone. Examples include; mass, temperature etc

A vector quantity is described by both magnitude and direction. E.g force, weight etc

Answer:

1. Cart Y has a larger magnitude of momentum.

2. Because the mass of cart Y is larger than the mass of cart A.

Explanation:

The following data were obtained from the question:

Mass of cart A (mₐ) = 2 Kg

Velocity of cart A (vₐ) = 4 m/s

Mass of cart Y (mᵧ) = 8 Kg

Velocity of cart Y (vᵧ) = 2 m/s

1. Determination of which of the cart has a larger magnitude of momentum.

For Cart A:

Mass (mₐ) = 2 Kg

Velocity (vₐ) = 4 m/s

Momentum of cart A (pₐ) =?

Momentum = mass × velocity

pₐ = mₐ × vₐ

pₐ = 2 × 4

pₐ = 8 Kgm/s

Thus, the momentum of cart A is 8 Kgm/s

For Cart Y:

Mass (mᵧ) = 8 Kg

Velocity (vᵧ) = 2 m/s

Momentum of cart Y (pᵧ) =?

Momentum = mass × velocity

pᵧ = mᵧ × vᵧ

pᵧ = 8 × 2

pᵧ = 16 Kgm/s

Thus the momentum of cart Y is 16 Kgm/s

SUMMARY:

The momentum of cart A is 8 Kgm/s

The momentum of cart Y is 16 Kgm/s

Therefore, cart Y has a larger magnitude of momentum.

2. Determination of the reason why cart Y has a larger magnitude of momentum.

Momentum is simply defined as the product of mass and velocity i.e

Momentum = mass × velocity

Thus, an increase in either mass or velocity will increase the momentum.

Considering the question given and the solution obtained:

Cart A:

Mass (mₐ) = 2 Kg

Velocity (vₐ) = 4 m/s

Momentum of cart A (pₐ) = 8 Kgm/s

Cart Y:

Mass (mᵧ) = 8 Kg

Velocity (vᵧ) = 2 m/s

Momentum of cart Y (pᵧ) = 16 Kgm/s

From the above data, we can see that the mass of cart Y (i.e 8 Kg) is larger than the mass of cart A (i.e 2 Kg).

Thus, we can conclude that the magnitude of the momentum of cart Y is larger than that of cart A irrespective of their velocities because the mass of cart Y is larger than the mass of cart A.

Answer:

4.71m/s

Explanation:

Given parameters:

Distance covered  = 40.5m

Time taken  = 8.6s

Unknown:

Speed  = ?

Solution:

The speed of Samantha is the distance divided by the time taken.

  Speed  = [tex]\frac{Distance}{time}[/tex]  

 Now insert the parameters;

   Speed  = [tex]\frac{40.5}{8.6}[/tex]   = 4.71m/s

Answer:

The oceans' deepest area is the Mariana Trench, also called the Marianas Trench, which is in the western part of the Pacific Ocean. The trench is 1,554 miles long and 44 miles wide, or 120 times larger than the Grand Canyon. According to the National Oceanic and Atmospheric Administration, the trench is almost 5 times wider than it is deep.

Explanation:

Answer:

Hello There!!

Explanation:

The answer is=>Because the value of gravatation on Jupiter is high in comparison with Earth and it will be hard to jump on Jupiter.

hope this helps,have a great day!!

~Pinky~

Answer:

i took a screenshot of the answer

Explanation:

Hope this helps! :)

Answer:

a) According to Newton's law of gravitation, as the distance between the Moon and the Earth decreases, the gravitational attraction increases and vice versa

The gravitational force of the Moon on the Earth causes the Earth to be slightly bulged on the side directly facing the Moon

The gravitational force also pulls the water bodies on the Earth's surface towards the Moon in the same manner and the effect is more pronounced due to the ability of the liquid water to assume a shape based on the magnitude of the gravitational field attracting it

Therefore, the region where the Moon is closest to the Earth we have a high tide as the water level rises and the region which is perpendicular to where the Moon is located has a  low tide

b) The two special types of tides are

1) The neap tide

2) The spring tide

Neap tide

Neap tide occurs when the Sun and Moon are 90° apart from each other when they are viewed by an observer from Earth

The gravitational pull of the Sun cancels (partially) the effect of the gravitational pull and tidal force of the Moon, resulting in minimum tidal range

Spring Tide

Spring tide occurs when the Earth, the Moon, and the Sun are simultaneously inline, such that the Sun reinforces the gravitational pull and tidal force of the Moon, resulting in a maximum tidal range

Explanation:

Answer:a

Explanation:

Answer:

200km/hr=55.55m/sec

Explanation:

200km/1hr×1000m/1km×1hr/3600sec=200,000/36000

Answer:

if you multiply the coefficient to the denominator you will find that the percentage of increase is equal to your ending point

Explanation: