What can the arrow in a chemical reaction be translated to mean? Check all that apply

A. yields

B. accompanied by

C. react to form

D. added to

E. except

The friction force is equal to 120 N. This is based on Newton's First Law. The friction force balances the pushing force, thus keeping the box stationary.

When you push on a large box with 120 N of force and it does not move, it means that the friction force opposing your push is equal to the pushing force. This is based on Newton's First Law of Motion which states that an object in motion tends to stay in motion and an object at rest tends to stay at rest unless acted upon by an unbalanced external force. Friction is the resisting force that occurs between two surfaces in contact when one or both of the surfaces are moved or attempt to move. In this case, the friction force is 120 N because it precisely offsets the applied force, keeping the box stationary.

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Answer:

[tex]T_2 = 1.40 hours[/tex]

Explanation:

As per kepler's law of time period we know that

square of time period is proportional to the cube of the distance

so here we can say

[tex]\frac{T_1^2}{T_2^2} = \frac{r_1^3}{r_2^3}[/tex]

so we know that

for moon

[tex]T_1 = 27.4 days[/tex]

[tex]r_1 = 384,400 km[/tex]

[tex]r_2 = 6370 km[/tex]

now from above formula we have

[tex]\frac{27.4^2}{T_2^2} = \frac{384,400^3}{6370^3}[/tex]

[tex]T_2 = 0.058 days[/tex]

[tex]T_2 = 1.40 hours[/tex]

Using Kepler's third law and the period of the Moon, we find that an artificial satellite very close to Earth has a period of approximately 1.41 hours. This involves comparing the orbital radii and periods using the proportional relationship given by Kepler's law. Substituting values and simplifying yields the final period.

To determine the period of an artificial satellite orbiting very near the Earth’s surface using Kepler’s laws, we will use Kepler's third law, which states that the square of the orbital period (T) is proportional to the cube of the average orbital radius (r). Given the following:

Now, add the radius of the Earth to get the orbital radius of the satellite, r2 = rE + 0 = 6.38 × 106 m. According to Kepler’s third law ([tex]T_2[/tex] ∝ [tex]r_3[/tex]), we have:

Substitute the known values:

Simplifying the right side:

Taking the square root of both sides to solve for [tex]T_2[/tex] :

Converting days to hours (1 day = 24 hours):

Therefore, the period of an artificial satellite orbiting very near the Earth’s surface is approximately 1.41 hours.

f=ma is newton's second law ...68x1.2=68+2/10x68 = 68+13.6=81.6n

Answer:

81.6N

Explanation:

Force = Mass x Acceleration

Force = 68 x 1.2

Force = 81.6

Units = Newtons

81.6 N

(81.6 Newtons)

I'm pretty sure you can find it out by using a speed monitor and compass or just observing it

if there any answer choices tell me.

Answer:

vertical distance, s = 0.16 meters

Explanation:

It is given that,

An amateur player is about to throw a dart with an initial velocity of 15 meters/second onto a dartboard.

Dashboard is placed at a distance of 2.7 meters.

Calculating time from velocity and distance i.e. [tex]t=\dfrac{d}{s}=\dfrac{2.7}{15}\ s=0.18\ s[/tex]

Using second equation of motion for finding vertical distance :

[tex]s=ut+0.5gt^2[/tex]

Here, u = 0 (for vertical velocity )

[tex]s=0.5gt^2[/tex]  

[tex]s=0.5\times 10\times (0.18)^2[/tex]        

s = 0.162 meters

or s = 0.16 meters

Hence, the vertical distance by which the player will miss the target if he throws the dart horizontally, in line with the dartboard is 0.16 meters.

Sound waves  are a change of pressure that moves through matter. (C)

Answer:

option a

Explanation:

Answer:

A ( 11; the number of protons

Explanation:

if the atomic mass is 11 that means there are also 11 protons

The reciprocal of resistance or measure of a devices ability to conduct is called Conductance. Conductance is the ability of material that allows electricity to pass through it. The unit of conductance is seimens. It can also be represented by "mho" , inverse of "ohm" which is unit of resistance. Best example of conductive metals are silver and copper. Materials that allows conductivity are called Conductor. Material that partially allows conductivity are called Semi-conductor. Material that does not allow conductivity are called Insulator.

Conductance can also be defined as ability to flow. The term conductance is not only used for electrical conductivity, but it is also used for thermal conductivity and fluid conductivity.

Answer:

conductance

Explanation:

The different colors in the sky are caused by the scattering of sunlight in Earth's atmosphere. Blue light scatters more efficiently than other colors, resulting in the blue color of the sky.

The different colors that appear in the sky are caused by the scattering of sunlight. When sunlight enters Earth's atmosphere, it scatters from the molecules of air. The small size of the air molecules causes blue light to scatter more efficiently than other colors, such as greens, yellows, and reds. Therefore, the blue light is scattered all over the sky, resulting in the blue color of the sky.

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Answer:imagine Bohr coming up to you and saying i have 2 atoms; it sticks together and becomes a compound.

Explanation:

Trade winds near equator blows in curve path instead of straight path. This is because of earth rotation. This effect of earth rotation that cause wind to move in curve motion is called Coriolis effect. These kind of wind blows at the northeast of the North hemisphere and southeast of the South hemisphere. The trade wind are warm and it blows due to rising of hot air from equator.

Final answer:

Trade winds don't blow straight toward the equator because the Coriolis effect causes deflection to the right in the northern hemisphere, forming northeast trade winds, and to the left in the southern hemisphere, forming southeast trade winds.

Explanation:

The trade winds don't blow straight toward the equator due to the influence of the Coriolis effect, which is caused by the rotation of the Earth. In the northern hemisphere, air moving toward the equator is deflected to the right, creating the northeast trade winds. Conversely, in the southern hemisphere, air moving toward the equator is deflected to the left, resulting in the southeast trade winds. These winds converge near the equator in the Intertropical Convergence Zone (ITCZ), leading to very wet conditions and the formation of the world's great rainforests.

Answer:

False

Explanation:

When the object hits the water, it's not adding weight to the object, but is changing the force of the waves in the water. They wouldn't be balanced and this wouldn't determine if the object would stop. However, with more informational variables with precise measurements the answer may alter.

the amplitude of a sound wave determines its loudness or volume. A larger amplitude means a louder sound, and a smaller amplitude means a softer sound. In Figure 10.2 sound C is louder than sound B. hope i helped!

(sorry if wrong)

here we need to write the two components of the displacement and then we need to add them

first displacement is given as

[tex]d_1 = 75 km[/tex] 30 degree West of North

[tex]d_1 = - 75 sin30 \hat i + 75 cos 30 \hat j[/tex]

[tex]d_1 = - 37.5 \hat i + 64.9\hat j[/tex]

Other displacement is given as

[tex]d_2 = 155 km[/tex] 60 degree due East of North

[tex]d_2 = 155 sin60 \hat i + 155 cos60 \hat j[/tex]

[tex]d_2 = 134.2 \hat i + 77.5 \hat j[/tex]

now we need to find the net displacement

[tex]d = d_1 + d_2[/tex]

[tex]d = (-37.5 + 134.2)\hat i + (64.9 + 77.5)\hat j[/tex]

[tex]d = 96.7\hat i + 142.4\hat j[/tex]

so it is given as

[tex]d = \sqrt{96.7^2 + 142.4^2}[/tex]

[tex]d = 172.1 km[/tex]

and its direction is given as

[tex]\theta = tan^{-1}\frac{96.7}{142.4} = 34.1 degree[/tex]

so it will displace by 172.1 km at 34.1 Degree East of North

When Amelia apply brakes the car will start reducing its speed and then finally stop

So here as per Newton's First law we can say all object continue its state of motion until and unless some unbalanced external force act upon its.

This property is due to inertia of the object which is the property of mass. Here inertia is the property which resist the change in state of motion of an object.

If brakes are applied and an object stops after some time (let say t = 5 s) and on applying brakes other object stop in other time (let say t = 10 s) then if other object took longer time to stop then it means its inertia will be more.

So its all depends on inertia of object that how much time it will take to stop after applying brakes

So correct answer is

B.  inertia

Answer:

B

Explanation:

Inertia

Your answer is 40 degrees Celsius

104f in celsius is 40c

Any object which is in state or rest is made to change its by applying the external force. An object is made to move or stay still due to its inertia.

Mass is the measure of inertia . Greater the mass, greater will be the inertia.

Inertia is the opposition caused to the motion of an object whether it is still or moving. It is a tendency to do nothing or remain unchanged.

Hence, Inertia causes an object to move or stay still.

Learn more about inertia.

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Objects move or stay still based on Newton's first law of motion or the law of inertia, which states that an object will continue its current state of rest or constant motion unless an external force acts upon it.

What causes objects to move or stay still can be explained by Newton's first law of motion, also known as the law of inertia. This law states that every object will continue to be in a state of rest or move at a constant speed in a straight line unless it is compelled to change by an outside force. For example, if you slide a book on a table, it eventually stops because of the friction (an outside force) between the book and the table.

Similarly, an object moving in an elliptical path, such as a planet, must be subjected to a constant force that keeps changing its direction. Newton proposed this force to be gravity. So, if you throw a ball (a small scale example), it eventually drops to the ground because of the gravitational pull of the earth.

Therefore, without an external force, a stationary object stays put, and a moving object keeps moving at the same speed and in the same direction.

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i believe it is element or compound

T = tension force in the cable

m = mass of the flowerpot = 10 kg

θ = angle cable makes with the horizontal = 30 deg

there are horizontal and vertical components of tension force . The vertical component of tension force in cable is in opposite direction of the weight of the flowerpot. hence vertical component of tension balances the weight of flowerpot. so we can write

T Sinθ = mg

inserting the above value

T Sin30 = 10 x 9.8

T(0.5) = 98

T = 98/0.5

T = 196 N

Answer: The work OUTPUT of a simple machine can never exceed the work INPUT because FRICTION uses some of the work.

Explanation:

This concept is related to ideal machines and efficiency.

Only ideal machines can convert all the work input into useful work (work ouput).

The efficiency is a concept that tells you the proportion of input work that is transformed into output work.

         Efficiency = (output work / input work) × 100

Ideal machines, those where friction does not exist, have a 100% efficiency, and so ideal machines convert all the input work into useful output work.

Real machines have a efficiency less than 100%. Friction lowers the efficiency and the work outpu is less than the work input, because friction uses work which is converted, mostly, into heat energy or sound energy.

'6' is the angle of incidence.

'7' is the angle of reflection.

Answer:

a) Acceleration, a = -u/9, where u is the initial velocity

b) Acceleration = 0.741 m/s², Initial velocity = 6.67 m/s

Explanation:

 We have equation of motion, v = u + at, where v is the final velocity, u is the initial velocity, a is the acceleration and t is the time taken.

a)  We have v = 0 m/s, t = 9 s

 So,    0 = u + a x 9

      Acceleration, a = -u/9, where u is the initial velocity

b) We have equation of motion , [tex]s= ut+\frac{1}{2} at^2[/tex], s is the displacement, u is the initial velocity, a is the acceleration and t is the time.

 s = 30 m , u = -9a, t =9 s

 So,  [tex]30= -9a*9+\frac{1}{2} *a*9^2\\ \\ 30=-40.5a\\ \\ a=-0.741m/s^2[/tex]

u = -9a = 6.67 m/s

So acceleration = 0.741 m/s², Initial velocity = 6.67 m/s

Final answer:

The answer explains how to calculate the acceleration of the puck given the distance it traveled and the time taken. It further details how to find the initial velocity of the puck using the acceleration obtained earlier.

Explanation:

A. To determine the acceleration of the puck, we can use the equation:

a = 2x / t^2

Substitute the values given: x = 30m and t = 9s.

b. To find the initial velocity of the puck, we first calculate the acceleration using the formula a = Δv / t, where Δv = final velocity - initial velocity.

Then, knowing the acceleration from part (a), we can calculate the initial velocity using the equation v = u + at, where v is the final velocity, u is the initial velocity, a is the acceleration, and t is the time taken.

Im not sure about this one but the one i will go for is a.

initial speed by which Hilary is walking = 1.3 m/s

Now the rate of increase in her speed that is her acceleration is given by

[tex]a = 0.090 m/s^2[/tex]

now we need to find her final speed after t = 10 s

so here we can use the kinematics equation in order to find the final speed

[tex]v_f = v_i + at[/tex]

now plug in all data in the above equation

[tex]v_f = 1.3 + (0.090 * 10)[/tex]

[tex]v_f = 1.3 + 0.90[/tex]

[tex]v_f = 2.2 m/s[/tex]

so here the final speed will be 2.2 m/s after she accelerates

Ball is thrown at an angle of 20 degree with velocity 18 m/s

so first we will find the two components of the velocity

[tex]v_x = 18 cos20[/tex]

[tex]v_x = 16.91 m/s[/tex]

similarly for other component

[tex]v_y = 18 sin20[/tex]

[tex]v_y = 6.16 m/s[/tex]

now the ball will cover horizontal distance of 30 m till it reach to other player

so here we can use the formula of time

[tex]x = v_x * t[/tex]

[tex]30 = 16.91 * t[/tex]

[tex]t = \frac{30}{16.91}[/tex]

[tex]t = 1.77 s[/tex]

so it will take 1.77 s to reach the other player

Answer:

1.77 on ed2020

Explanation:

The right option is (C).

The potassium-40 is the isotope of potassium which has the half-life of 1.251×109 years to reduce its half quantity. There are rare elements present on earth which follow the two type of beta decay. Potassium-40 is one of them which can decay as beta decay to convert into Ca-40 or electron capture decay to convert into the Ar-40. In this second decay, they also emit gamma rays. So, the right option is (C) which wrong regarding the transmutation.

In the examples given, the transmutation process either involves the emission of particles or the bombardment with neutrons, which leads to a change in the atomic number and transforms the element into a different one. The exception is option C) where Potassium-38's release of a beta particle results in its transformation into Argon-40, not Argon-38 as stated.

Transmutation in chemistry refers to the process wherein an atom of one element is changed into an atom of another element through a nuclear reaction. Of the options provided: A) Uranium-238 emitting an alpha particle to form Thorium-234, B) Uranium-238 being bombarded with a neutron to produce Uranium-239, and D) Plutonium-239 bombarded with two neutrons to produce Americium-241 and a beta particle, are all examples of transmutations. These include the emission of particles or bombardment with neutrons leading to change in the atomic number and forming a different element. However, option C) Potassium-38 releasing a beta particle to form Argon-38 is not an example of a transmutation. In this case, Potassium-38 release of a beta particle results in a change in atomic number from 19 to 18, transforming into Argon-40, not Argon-38 as stated.

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Final answer:

The potential energy gained by driving the car from sea level to Nu’uanu Pali lookout is approximately 3,589,260 joules.

Explanation:

To calculate the potential energy gained by driving your car from sea level up to the Nu’uanu Pali lookout, we can use the formula: PE = mgh, where m is the mass of the car, g is the acceleration due to gravity, and h is the change in height. In this case, the mass is 1000 kg, g is approximately 9.81 m/s², and h is 366 m. Plugging in the values, we get:

PE = 1000 kg * 9.81 m/s² * 366 m = 3,589,260 joules

So, driving your car up to the Nu’uanu Pali lookout increases its potential energy by approximately 3,589,260 joules.

Answer:

Water is a simple compound.

Explanation:

Water, from first glance, is a simple compound. This is because it is made up of two atoms - hydrogen and oxygen. This gives the formula:

[tex]H_{2}O[/tex]

In the simple compound, one atom of oxygen is bound to two hydrogen atoms like this:

[tex]H - O - H[/tex]

The bonding in water is hydrogen bonding.  This is a bonding that takes place between the oxygen atom and a hydrogen atom of the next water molecule.

This makes the water molecule an interesting molecule.

here we can use energy conservation

like initial kinetic + potential energy is always conserved and it will be same at all points

so we can say

[tex]KE_i + PE_i = KE_f + PE_f[/tex]

[tex]\frac{1}{2}mv_i^2 + mgh_1 = \frac{1}{2}mv_f^2 + mgh_2[/tex]

now we can plug in all the given values in it

[tex]v_i = 0[/tex]

[tex]h_1 = 443 m[/tex]

[tex]h_2 = 221 m[/tex]

[tex]\frac{1}{2}m*0 + m*9.8*443 = \frac{1}{2} m*v_f^2 + m*9.8*221[/tex]

now divide whole equation by mass "m"

[tex]9.8*443 = \frac{1}{2} v_f^2 + 9.8*221[/tex]

[tex]2175.6 = \frac{1}{2}v_f^2[/tex]

[tex]v_f = 65.96 m/s[/tex]

so final speed will be 65.96 m/s