help pls !!!!! which statement is true for chemical reactions but not for nuclear reactions?

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.

Answer:

Some object have less gravitational pull than other objects.

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:

First option, check image uploaded.

Explanation:

Acceleration defined as time rate of change of velocity. Or change in velocity per change in time.

Acceleration is also the slope of the graph of  velocity against time.

[tex]Acceleration = \frac{dv}{dt}[/tex]

Also change in displacement with time is velocity.

From the given options, the correct graph is in the first option, as shown in the image uploaded.

Assuming the scooter is moving horizontally on a flat surface, then by Newton's second law, the vertical forces (the normal force and the scooter's weight) cancel out:

n - w = 0

n = w

n = (120 kg) g = 1176 N

(where g = 9.8 m/s²)

Then the friction force has a magnitude of

f = µ n

where µ is the coefficient of kinetic friction, so that

f = 0.4 (1176 N) = 470.4 N ≈ 470 N

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.

Learn more about Newton's second law, here

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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:

[tex]V =-7221.43 \ V[/tex]

Explanation:

The Electric Potential

The electric potential at a point is equal to the electric potential energy (measured in joules) of any charged particle at that location divided by the charge (measured in coulombs) of the particle.

To calculate the electric potential of a point charge Q at a distance r, we use the formula:

[tex]\displaystyle V=\frac{kQ}{r}[/tex]

Where

[tex]k=9\cdot 10^9\ N.m^2/c^2[/tex]

We are given the following data:

[tex]Q=-3.37\cdot 10^{-6}\ c[/tex]

r = 4.20 m

Calculating:

[tex]\displaystyle V=\frac{9\cdot 10^9*(-3.37\cdot 10^{-6})}{4.2}[/tex]

[tex]\mathbf{V =-7221.43 \ V}[/tex]

Answer:

-7221.43 V

Explanation:

its for Acellus

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:

send the wagon down a higher hill

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

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:

i took a screenshot of the answer

Explanation:

Hope this helps! :)

Answer:

47.2m

Explanation:

Answer:

200km/hr=55.55m/sec

Explanation:

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

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:

Fructose

Explanation:

Hope this helps!

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:

jsdsddsd check the image plss

Answer:

C. Over water in polar regions

Explanation:

Answer:

Option B. 0.3 Hz

Explanation:

From the question given above, the following data were obtained:

Period (T) = 3 s

Frequency (f) =?

Frequency is related to the period according to the following equation:

Frequency (f) = 1 / period (T)

f = 1/T

With the above formula, we can obtain the frequency wave as illustrated below:

Period (T) = 3 s

Frequency (f) =?

f = 1/T

f = 1/3

f = 0.3 Hz

Therefore, the frequency of the wave is 0.3 Hz

Answer:

The answer is 0.3 Hz

Explanation:

I took AP EX quiz.

Answer:

B. The foam will take up some of the waves' energy, decreasing their amplitude

Answer:

This depends on the writers

if they want they can make spiderman deny the laws of nature

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:

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:

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:

we have to make another question we maxed it out again lol

Explanation:

Answer:

A. Repeat the experiment ten times. Label the y-axis “Time” and the x-axis “Trial.” Plot the average time for all ten rats for each trial of the experiment.

Explanation:

Answer:

b

Explanation:

Answer:

b

Explanation:

Answer:

The work done on the box is 21.952 Joules

Explanation:

The given parameters are;

The mass of the box of magazines, m = 1.4 kg

The upward force with which the student lifts the magazine = 52.7 N

The distance (height) of the lift, h = 1.6 meters

The work done on the box = The potential energy gained by the box of magazine, P. E.

Potential energy gained by elevation, P. E. = Mass, m × The acceleration due to gravity, g × Height, h

Where;

The acceleration due to gravity, g = 9.8 m/s²

∴ P. E. = m × g × h = 1.4 kg × 9.8 m/s^2 × 1.6 m = 21.952 Joules

The work done on the box = The potential energy gained by the box of magazine, P. E. = 21.952 Joules

The total work done on the box is 21.952 Joules

The workdone on the box is equal to the potential energy possessed by the body. Mathematically;

[tex]W=P.E=mgh[/tex]

Given the following parameters

m = 1.4kg

g  = 9.8m/s²

h = 1.6m

Substitute the given parameters into the formula:

[tex]W = 1.4 \times 9.8 \timees 1.6\\W=21.952Joules[/tex]

Hence the total work done on the box is 21.952 Joules

Learn more on workdone here: https://brainly.com/question/21854305

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