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Answer: $16

Explanation: The equation is:

x = -54 + (5 x 15) -5

x = -54 + 75 - 5            [remember to use PEMDAS!]

x= 21 - 5

x = 16 dollars

The answer is: $16

Proof⬇⬇

Answer:

Sliding a box is work against friction because force applied to move the box is in oppose of friction.

Answer:

It is often necessary to convert from one unit to another. For example, if you are reading a European cookbook, some quantities may be expressed in units of liters and you need to convert them to cups. Or perhaps you are reading walking directions from one location to another and you are interested in how many miles you will be walking. In this case, you may need to convert units of feet or meters to miles.

Explanation:

Because of research

Explanation:

KE = ½ mv²

KE = ½ (150 kg) (3 m/s)²

KE = 675 J

The kinetic energy of a 150 kg bear running at 3 m/s would be 67.5 Joules.

Mechanical energy is the combination of all the energy in motion represented by total kinetic energy and the total potential energy stored energy in the system which is represented by total potential energy

ME = KE + PE

As given in the problem we have to calculate the kinetic energy of a 150 kg bear running at 3 m/s

K.E =?

m = 150 kg

v = 3 m/s

The total kinetic energy is given by the formula

KE = 1/2mv²

By substituting the respective values in the formula of kinetic energy

K.E =?

m = 150 kg

v = 3 m/s

KE =1/2×150×3²

KE= 67.5

Thus, The kinetic energy of a 150 kg bear running at 3 m/s would be 67.5 Joules.

Learn more about mechanical energy from here

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Answer:

scalar d = 54000 m , v_average = 16,667 m / s

vector    d = -4000 m , moved 4000 to the west

                 v_average = 0                

Explanation:

his is a uniform motion exercise, but we must be careful with quantities that are scalars and vector quantities

The distance traveled is a scalar

       d = d₁ + d₂

       d = 25000 + 29000

       d = 54000 m

the speed is a scalar, in the exercise it is not specified if the speed of each trajectory or the average speed. Therefore we will calculate the two

       v₁ = d₁ / t₁

       v₁ = 25000/1500

       v₁ = 16,667 m / s

       v₂ = 29000/1740

        v₂ = 16,667 m / s

Since the two speeds are equal, the average speed is

       v = (v1 + v2) / 2

       v_average = 16,667 m / s

now let's calculate the displacement that is a vector, so it has direction in addition to modules

suppose the eastward direction is positive and the bold are vectors

      d = d₁ - d₂

       d = 25000 - 29000

        d = -4000 m

this means that it moved 4000 to the west

velocity is a vector, we assume positive eastward movement

        v₁ = 16,667 m / s

         v₂ = - 16,667 m / s

         v_average = (v1 -v2) / 2

         v_average = 0

Answer:

The answer is D

Explanation:

The answer is D because weight has a lot of amount of force.

Answer:

the answer is D

Answer:

Explanation:

The first displacement when the mile reading changes from 257 to 145

= 257 - 145

= 112 km

Then he turns back . This time the displacement will be negative .

The mile reading changes from 145 to 175

displacement = - ( 175 -  145 )

= - 30 km

Final displacement = 112 - 30

= 82 km .

Answer:

A. Copper wires

Explanation:

the the answer is copper wires because sound waves travel the slowest through gases, faster through liquids, and fastest through solids and copper wire is a solid.

Answer:

Tesla perfected alternating current (AC) technology, which now provides electricity to all homes and appliances. He developed the fluorescent lightbulb, which is energy-efficient and cost-effective. The electric motor, which he invented, now powers appliances, machines, tools, and some cars. Tesla also built a hydroelectric power plant to generate electricity from the force of water. Tesla also studied X-rays, radios, and wireless technology.

Explanation:

i just answered it this is the sample response believe me edge 2021

Answer:

Energy is a property that matter has. The same amount matter can have different amounts of energy and so represent different states of matter. For example, if you add energy to an ice cube made of water, it becomes liquid water, and if you add even more energy, it becomes steam.

Explanation: Look At Answer

Answer:

Hii! ^^

Explanation:

It is given that by using track and cart we can record the time and the distance travelled and also the speed of the cart can be recorded. With all this data we can solve questions on the laws of motion.  

Like using the first law of motion we can determine the force of gravity acting on the cart that has moved a certain distance and the velocity or the speed of card has already been registered and since time is known putting the values in formula would help us calculate the gravitational pull acting on cart.

Happy To Help! ^^

Answer:

34.70 N

Explanation:

Given :

F~ 1 = 43 N in direction 38◦

F~ 2 = 26 N in direction −140◦

F~ 3 = 27 N in direction 110◦

Therefore,

F~x = 43 cos (38) + 26 cos (-140) + 27 cos (110)

      = 43  (0.7) + 26  (-0.7) + 27  (-0.3)

      =  3.8

F~y = 43 sin (38) + 26 sin (-140) + 27 sin (110)

      = 43  (0.6) + 26  (-0.6) + 27  (0.9)

      = 34.5

so, F~ = [tex]$ \sqrt{3.8^2 + 34.5^2}$[/tex]

          = 34.70 N

Answer:

Magnitude = 26 m

Direction = eastward

Explanation:

Given that a football coach walks 24 meters eastward, then 12 meters westward, then 36 meters eastward, and finally 22 meters westward. What is the magnitude and direction of the displacement?

Let eastward be positive and westward be negative.

Magnitude = 24 - 12 + 36 - 22

Magnitude = 60 - 34

Magnitude = 26

Since the answer is positive, the direction will be eastward.

Therefore,

Magnitude = 26 m

Direction = eastward

Answer:

Atomic mass I Just did the quiz and got 100% for edge

456.7  =  4.567 x 10² in scientific notation

Answer:

Average speed is 14 m/s and average velocity is 10 m/s.

Explanation:

The time consumed to travel from A to B = Distance / Speed = 30 / 10 = 3 seconds

The time consumed to travel from B to C = Distance / Speed = 40 / 20 = 2 seconds

Now, we find the average speed by using the below formula.

Average speed = total distance / total time

Average speed = (30 +40) / (3 + 2)

Avergae speed = 70 / 5 = 14 m/s.

Now find the average velocity.

Average velocity = displacement / time

Displacement, distance between A to C = [(30)^2 + (40)^2]^1/2 = 50 m

Average velocity = 50 / (3+2) = 10 m/s

Answer:

76352 g

Explanation:

Start by reducing the first quantity to grams, since a) additions can not be performed among quantities given in different units, and b) the answer is required in grams so better to express everything in grams.

75 kg = 75000 g

Then the addition becomes: 75000 g + 1352 g = 76352 g

Answer:

[tex]\Delta t = \dfrac{\Delta x}{v} \\\\[/tex]

Explanation:

Given the expression [tex]v\:=\dfrac{\Delta x}{\Delta t}[/tex], we are to find the value of Δt from the expression. To find Δt, we will make Δt the subject of the formula from the given expression as shown;

[tex]v\:=\dfrac{\Delta x}{\Delta t}\\\\cross\ multiply\\\\v*\Delta t = \Delta x\\\\Divide \ both\ sides \ of\ the \ resulting \ equation \ by \ v\\\\\dfrac{v*\Delta t}{v} = \dfrac{\Delta x}{v} \\\\\Delta t = \dfrac{\Delta x}{v} \\\\[/tex]

Hence the equivalent expression for [tex]\Delta t = \dfrac{\Delta x}{v} \\\\[/tex].

Answer:

Magnitude = 18 m

Direction = southward

Explanation:

Given that a tennis ball moves 18 meters northward, then 22 meterssouthward, then 14 meters northward, and finally 28 meters

southward.

To calculate the displacement, let the

Northward = positive direction

Southward = negative direction

Displacement = 18 - 22 + 14 - 28

Displacement = 32 - 50

Displacement = - 18

Since the answer is negative,

The magnitude will be 18 m and direction of the displacement is southward

Answer:

Look below

Explanation:

The number of electrons, determines the chemical properties of the atom. Protons contribute to the mass of an atom and provide the positive charge to the nucleus. The number of protons also determines the identity of the element. Electrons have a negative charge. Since the atom electrically neutral, the number of electrons must be equal to the number of protons. The electrons arrange themselves in energy levels around the nucleus.

Answer:

Look above

Explanation:

The number of electrons, determines the chemical properties of the atom. Protons contribute to the mass of an atom and provide the positive charge to the nucleus. The number of protons also determines the identity of the element. Electrons have a negative charge. Since the atom electrically neutral, the number of electrons must be equal to the number of protons. The electrons arrange themselves in energy levels around the nucleus.

Answer:

they name if my instructor is mrs. Rodriguez

Answer:

Hey there!

d=rt

t=d/r

t= 70/50, or 1.4

It would take the car 1.4 hours to travel 70 km.

Let me know if this helps :)

Answer:

24 meters

Explanation:

From 0 - 4 secs. the distance traveled forward 8 meters. From 4 - 6 secs. the distance traveled another 8 meters forward. Then from 6 - 10 secs. the distance traveled backward 8 meters for a total of 24 meters.

Incompletevquestion. However, I inferred from a general perspective about perpendicular lines.

Explanation:

Put simply, perpendicular lines are lines that are at right angles (90°) to each other. Thus, we could say based on this definition that for lines lll and mmm to be perpendicular they intersect and be at right angles (90°) to each other as found on the attached image.

Answer:

Daniela's Definition: AB is perpendicular to CD if the measure of <AOC equals the measure of <AOD.= Well Done! Because the measure of <COD...

Ori's Definition: AB is perpendicular to CD if AB and CD intercept perfectly sideways.= Please rework your ….

Kaori's definition: AB is perpendicular to CD if one line can be mapped to the other by a rotation about point O of 90 degrees.= Well done! I hadn't previously considered defining...

Explanation:

Kahn Academy

Answer: The balance of oxygen and carbondioxide is made due to respreration and photosinthesis. As we leave carbon dioxide and take in oxygen the ballance of carbon dioxide and oxygen is made. And during the photosinthesis of plants the balance of carbon dioxide and oxygen is made.

Answer:

changes direction

changes speed

bounces off the boundary

Answer:

B. changes speed

F. passes through the boundary

Explanation:

(This Answer is correct on Edge 2021)

A. "changes direction" is INCORRECT bc while the incident ray does change direction in refraction, it also changes direction in reflection, and we require only the characteristics that are present in refraction and not reflection.

Answer:

When one object exerts a force on another object, the second object exerts the same size force on the first object

Explanation:

Answer:

B

Explanation:

This is a physics question, know that force is equals to mass divided by acceleration (acc.), so if the same force is applied, say 10 Newton and the mass of A is 2 and the mass of B is 4, then the acceleration of A is 0.2 and that of B is 0.4 by equating, and this applies to all cases.

Answer:

because it emits the most heat thru radiation