A car travels 60 miles due West first then turns back and travels 120 miles due East in 3 hours. What is...

a) the distance traveled by car?

b) the displacement of the car?

Answers

Answer 1

Answer:

A. 180 milesB. 60 miles

Explanation:

In this problem, we are required to solve for the total distance that the car travelled. and the displacement

A) the distance travelled by car

this can be gotten by summing all the distances the car has travelled.

i,e total distance= 60 miles+120 miles

total distance= 180 miles

B) the displacement of the car

the displacement can be gotten by  subtracting the final distance from the initial distance

final distance = 120 miles

initial distance= 60 miles

displacement= 120-60= 60 miles


Related Questions

PLEASE HELP 3 + 2 ∙ 4 = 3 + (2 ∙ 4) True False

Answers

The answer is true. According to PEMDAS, Parentheses and multiplication goes first in this equation. Since the multiplication sign is in between parenthesis, the order of operation is the same

The given expression 3 + 2 ∙ 4 = 3 + (2 ∙ 4) is absoulutely correct so it is True.

What is the arithmetic operator?

Arithmetic operators are four basic mathematical operations in which summation, subtraction, division, and multiplication involve.,

Summation = addition of two or more numbers or variable

For example = 2 + 8 + 9

Subtraction = Minus of any two or more numbers with each other called subtraction.

For example = 4 - 8

Division = divide any two numbers or variable called division.

For example 4/8

Multiplication = to multiply any two or more numbers or variables called multiplication.

For example 5 × 7.

Given,

3 + 2 ∙ 4 = 3 + (2 ∙ 4)

We know that in every calculation we cannot separate multiplication and need to solve them first

So,

3 + 8 = 3 + 8

11 = 11

Hence, 3 + 2 ∙ 4 = 3 + (2 ∙ 4)  is absoulutely correct.

To learn more about the arithmetic operators,

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As an object in motion becomes heavier, its kinetic energy _____. A. increases exponentially B. decreases exponentially C. increases proportionally D. decreases proportionally

Answers

the answer is c. as an object is in motion speeds up or “becomes heavier”, it’s kinetic energy increases proportionally: double the velocity and you quadruple the kinetic energy. this is why a tiny bullet traveling at high speed does so much more damage than a huge truck bumping into something at 1 mph. so the answer is c

Answer:

c

Explanation:

Suppose you are designing an amplifier and loudspeaker system to use at a rock concert. You want to make it as loud as possible. How can you design the system to maximize the volume? Explain your answer?


Hi, I’m very confused by this question. Is it referring to the right hand rule to predict where the force and current will face?


Thanks for helping!

Answers

Answer is given below

Explanation:

Audio power amplifiers are found in all types of sound systems, including sound reinforcement, public address and home audio systems, as well as musical instrument amplifiers such as guitar amplifiers. This is the last electronic step in the general audio playback series before sending the signal to the loudspeaker.  So when we want maximum volume or loud sound, we have to get it with maximum output and high input and low output impedance

Einsteins general theory of ————- describes the relationship
between energy and matter, and is major event in the history
of science.

Answers

Answer:

Special relativity.

Explanation:

Einstein's general theory of special relativity describes the relationship

between energy and matter, and is major event in the history

of science.

In 1905, Albert Einstein a noble physicist developed a theory that forms part of the basis of modern physics and one of the major event in the history of science, this theory was known as the theory of special relativity.

The theory of special relativity gives the relationship between space and time for any object that is moving at a uniform speed in a straight line, typically at the speed of light.

Simply stated, the theory of special relativity describes how a change in the speed of an object affect or relate with the measurement of space, time and mass. This ultimately implies that, as an object approach the value of light speed, it gains an infinite amount of mass and as such it is unable to travel faster than light.

The theory of special relativity by Albert Einstein gave birth to one of the most famous equation in science;

[tex]E = mc^2[/tex]

The equation illustrates, Energy equals mass multiplied by the square of the speed of light.

Where; E = Energy.

M = Mass.

C = Speed of light.

From the above equation, we can deduce that the mass of an object increases with speed and that mass is equivalent to energy, thus matter (mass) can be interchanged with energy.

Calculate the speed for a car that went a distance of 125 miles in 2 hours time.

Answers

Answer:

65 miles per hour

Explanation:

Speed= Distance/Time

Following this formula, we just need to insert the values.

The distance is 125 miles and the time is 2 hours

125=2=65

65 miles per hour

The speed of the car was exactly 125 mi per 2 hours.

In a more familiar unit,  125mi/2hr = 62.5 mi/hr.

A linear accelerator uses alternating electric fields to accelerate electrons to close to the speed of light. A small number of the electrons collide with a target, but a large majority pass through the target and impact a beam dump at the end of the accelerator. In one experiment the beam dump measured charge accumulating at a rate of -2.0 nC/s. How many electrons traveled down the accelerator during the 2.0 h run

Answers

Answer:i

9E13 ELECTRONS

Explanation:

First we find the number of charges in two hrs

Which is - 2x 7200=- 14400NC

So no of electrons is now q/e

-144x10^-7/-1.6*10^-19

= 9*10^13

What is the approximate height of the average adult in centimeters?a. 100b. 200c. 300

Answers

Answer:

Option B

200 cm

Explanation:

From statistical evidence, the average height of an adult is about 200cm. This is like 2m or 6.56 feet.

Despite the fact that there are some exceptions; with some adults reaching heights of about seven feet, and some dwarfs who stand only about 1 m tall,  most adults only grow to about 200cm in height before they start shrinking due to old age.

By how many orders of magnitude is the distance to the nearest stars greater than the orbital radius of Neptune

Answers

four
••••••••••••••••••••

separating paper from a mixture by burning it is it a physical change true or false

Answers

Answer:

false

Explanation:

burning something is a chemical change

Scientists repeat experimental findings in order to:__________.
A) improve upon experimental design.
B) eliminate unseen errors.
C) both A and B
D) neither A nor B

Answers

Answer:

neither A nor B

Explanation:

There are a lot of reasons, quite handful of them. About why scientists repeat experiments.

They do so sometimes to persistently verify the results they have gotten. Another reason is so as to be able to study and improve them in other ways.

This is just 2 of the very many reasons why scientists repeat experiments. Remember the popular saying, that practice makes perfect? yeah, that's just it

I hope you understand. Thanks

What is a chemical change?

Answers

A chemical change happens when one chemical substance is transfer into one or More different substances such as iron becomes rest

a battery of 6v is connected in series with resistors of 0.1 ohm, 0.15 ohm, 0.2 ohm, 0.25 ohm and 6 ohm. how much current would flow through 0.2 ohm resistors ​

Answers

Answer:

0.9 Amps

Explanation:

Ohm's law: Voltage = Current x Resistance

Rearrange equation:

Current =Voltage/Resistance

Voltage=6v

In a series circuit the total resistance is the sum of all the resistors so the total resistance = 0.1+0.15+0.2+0.25+6=6.7 Ohms

6/6.7 = 0.9 (1dp) Amps

Because it is a series circuit, the current is the same throughout the entire circuit, all the resistors have a current of 0.9 Amps.

Hope this helped!

An initially neutral glass rod is rubbed with silk. It becomes positively charged by_____.a) electrons are created on the rod.
b) electrons are transferred from the silk to the rod.
c) protons are transferred from the silk to the rod.
d) protons are transferred from the rod to the silk.
e) electrons are transferred from the rod to the silk.

Answers

Answer:

e) electrons are transferred from the rod to the silk.

Explanation:

An initially neutral glass rod contains equal number of electron and proton.

If the rod becomes positively charged  after being rubbed with silk, then the rod must have lost some its electron to the silk since electrons are more mobile than protons, leaving the rod with excess positive charge (protons), and the silk will be negatively charged (excess electron).

Thus, the rod becomes positively charged by transfer of electrons from rod to the silk.

e) electrons are transferred from the rod to the silk.

Four different vehicles are shown. Assume that all four vehicles are traveling at the same speed on a highway. Which is true about the kinetic energy of the vehicles?

A. The motorcycle has the most kinetic energy because it has the least mass.

B. All of the vehicles have the same kinetic energy because they are moving at the same speed.

C. The delivery van has the greatest kinetic energy because its mass is greater than that of the other
vehicles.

D. The delivery van has the greatest kinetic energy because it has the most tires in contact with the
pavement.

Answers

Answer:

Option C. The delivery van has the greatest kinetic energy because its mass is greater than that of the other

vehicles.

Explanation:

Kinetic energy is the energy of an object in motion. Mathematically, it is expressed as:

K.E = ½mv²

Where:

K.E is the kinetic energy.

m is the mass of the object.

v is the velocity of the object.

From the formula above, we can say that:

Kinetic energy is directly proportional to the mass of the object and the square of the velocity of the object. This simply means that objects with higher mass will have a greater kinetic energy than objects will lighter mass even if their velocities are the same.

From the question given above, it is obvious that the delivery van has a greater mass than the rest object.

Therefore, the delivery van will have the greatest kinetic energy because its mass is greater than that of the other

vehicles.

4. Velocity can be calculated using the following equation
v= Ad/t
Mass (kg)
Displacement (m)
Velocity (m/s)
7.58
3.56
35.65
Given the data above from an experiment, calculate the amount of time the object was
in motion

Answers

3.56 displacement ( m )

How many planets are there?

Answers

Answer:

There are eight planets in our Solar System.

Explanation:

Answer:

8

Explanation:

Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune

Which law of motion is this an example of? Newton's 1st 2nd or 3rd law?​

Answers

Answer:

May be it is first law of motion.

The Sun emits a ray of light with a wavelength of 550 nm.a. What is its frequency?b. The ray falls on a flat piece of quartz at an angle of 70º relative to the surface. The ray refracts to an angle of 76.46º relative to the surface. What is the index of refraction for quartz?c. What is the speed of light in quartz?

Answers

Answer:

Frequency of light = 5454.5 GHz

Refractive index = 1.46

speed of light in quartz = 2.05 x 10^8 m/s

Explanation:

The wavelength of the light λ = 550 nm = 550 x 10^-9 m

frequency = ?

Frequency of light f = c/λ

where

c is the speed of light = 3 x 10^8 m/s

substituting, we have

f = (3 x 10^8)/(550 x 10^-9)

frequency f = 5.4545 x 10^14 Hz

==> 5454.5 GHz

The relationship between refractive index is given as

n1 sinθ1 = n2 sinθ2

where

n1 is the refractive index of air = 1

θ1 is the angle of incidence = (90 -70) = 20°

θ2 is the angle of refraction = (90 - 76.46) = 13.54°

n2 is the refractive index of quartz

substituting values, we have

1 x sin 20 = n2 x sin 13.54

0.3420 = n2 x 0.2341

refractive index of quartz n2 = 0.3420/0.2341 = 1.46

From n = c/v

where

n is the refractive index of quartz

c is the speed of light in air = 3 x 10^8 m/s

v is the speed of light in quartz = ?

substituting values, we have

1.46 = (3 x 10^8)/v

v = (3 x 10^8)/1.46 = 2.05 x 10^8 m/s

What is an atmospheric window?
A. A region in the atmosphere where light can get through
B. A region in the atmosphere where infrared radiation can penetrate
C. A range of wavelengths of electromagnetic radiation which transmit through the Earth's atmosphere
D. A part of the upper atmosphere with depleted ozone
E. Only A and D above

Answers

Answer:

A

Explanation:

Because it is a region in atmosphere that allows an particular wavelength of EMWs to pass through and of the options above only visible light is allowed to pass through

Which elements are found in all four components of Earth?​

Answers

Answer:

oxygen silicon aluminun iron

Usted coloca un recipiente con de mar sobre una bascula y toma nota de la lectura que indica la báscula . Ahora usted suspende la estatua del ejemplo 14.5 en el agua ( figura 14.18 ). Cómo cambia la lectura de la bascula ? ) Se incrementa en 7.84 N; ii) disminuye en 7.84 N: ) permanece igual: ) ninguna de las respuestas anteriores es correcta . cambia la lectura de la báscula cuando la estatua se sumerge en el agua?

Answers

Answer:

t the apparent weight of the body decreases when it is submerged in water,

 F'_{e} = mg - ρ_liquid g V

Explanation:

When a container is placed on a scale it falls due to the weight of the body and the needle attached to the spring shows the value of the weight that is proportional to the displacement of the spring.

When the body is immersed in a container with water, it exerts a push on the body, so its apparent weight decreases and the compression of the scale is less, therefore it indicates a smaller weight of the body.

Let's write the equilibrium equation for the body is placed on the scale without water

               [tex]F_{e}[/tex] - W = 0

               F_{e} = W

Let us propose the equilibrium equation for this case

            F'_{e} + B - W = 0

where F'_{e} is the elastic force, B the push of the liquid and W the weight of the body

            F'_{e} = W -B

The thrust of the liquid is given by the Archimedean principle which says that it is equal to the weight of the dislodged liquid

            B = ρ g V

             F'_{e} = mg - ρ_liquid g V      (1)

we use the density concept

            ρ_body = m / V

   

we substitute

             F'_{e}= g V (ρ_body - ρ_agua)          (2)

             

             F'_{e} < F_{e}

We see  from expression is 1 and 2 that the apparent weight of the body decreases when it is submerged in water,

To know the specific value of the decrease, the weight of the body in the air or its density and volume must be known

The work done when a force moves a body through a distance of 15m is 1800j. What is the value of the force applied

Answers

Answer:

120 Newtons.

Explanation:

Work(Joules) = Force(Newtons) × Distance(Meters)

If we need to find the Force, the equation changes.

To find Force, you have to divide the Work done from the Distance. Have a look at the picture above.

Samantha is 1.44 m tall on her eleventh birthday and 1.68 m tall on her twelfth birthday. By what factor has her height increased? By what percentage?

Answers

Answer:

Given initial height h¹= 1.44

Final height h²=1.68

So factor increase is 1.68/1.44²= 1.17

Percentage increase will be

1.68-1.44/1.44*100%=16.7%


For a circuit find the total potential differences if two resistors
of resistance R1 and R2 respectively kept series wise for a
current I passing through it.

Answers

-- If the two resistors are connected in series, then they behave like a single resistor whose resistance is (R₁ + R₂) ohms.

-- For any resistance, the potential difference (volts) across the resistance is   V = (current) x (resistance) .

-- So in THIS circuit,  V = I x (R₁ + R₂) .

A ball is thrown upward with a speed of 28.2 m/s.A. What is its maximum height?B. How long is the ball in the air?C. When does the ball have a speed of 12m/s?

Answers

Answer:

(A) The maximum height of the ball is 40.57 m

(B) Time spent by the ball on air is 5.76 s

(C) at 33.23 m the speed will be 12 m/s

Explanation:

Given;

initial velocity of the ball, u = 28.2 m/s

(A) The maximum height

At maximum height, the final velocity, v = 0

v² = u² -2gh

u² = 2gh

[tex]h = \frac{u^2}{2g}\\\\h = \frac{(28.2)^2}{2*9.8}\\\\h = 40.57 \ m[/tex]

(B) Time spent by the ball on air

Time of flight = Time to reach maximum height + time to hit ground.

Time to reach maximum height = time to hit ground.

Time to reach maximum height  is given by;

v = u - gt

u = gt

[tex]t = \frac{u}{g}[/tex]

Time of flight, T = 2t

[tex]T = \frac{2u}{g}\\\\ T = \frac{2*28.2}{9.8}\\\\ T = 5.76 \ s[/tex]

(C) the position of the ball at 12 m/s

As the ball moves upwards, the speed drops, then the height of the ball when the speed drops to 12m/s will be calculated by applying the equation below.

v² = u² - 2gh

12² = 28.2² - 2(9.8)h

12² - 28.2² = - 2(9.8)h

-651.24 = -19.6h

h = 651.24 / 19.6

h = 33.23 m

Thus, at 33.23 m the speed will be 12 m/s

Assess platos theory of the forms from Aristotle's standpoint. is he correct? Explain..it’s philosophy

Answers

Answer:

The task of philosophy, for Plato, is to discover through reason (“dialectic”) the nature of the Forms, the only true reality, and their interrelations, culminating in an understanding of the most fundamental Form, the Good or the One. Aristotle rejected Plato’s theory of Forms but not the notion of form itself. For Aristotle, forms do not exist independently of things—every form is the form of some thing. A …

Explanation:

A certain electromagnetic wave traveling in seawater was observed to have an amplitude of 98.02 (V/m) at a depth of 10 m, and an amplitude of 81.87 (V/m) at a depth of 100 m. What is the attenuation constant of seawater

Answers

Answer:

The  value is   [tex]\alpha =  0.002 Np/m[/tex]

Explanation:

From the question we are told that

  The first amplitude of the wave is  [tex]E_{max}1 =  98.02 \  V/m[/tex]

  The first  depth  is  [tex]D_1 =  10 \  m[/tex]

   The second amplitude is  [tex]E_{max}2 =  81.87 \  (V/m)[/tex]

   The second depth is [tex]D_2 = 100 \ m[/tex]

Generally from the spatial wave equation we have

   [tex]v(x) =  Ae^{-\alpha d}cos(\beta x  + \phi_o)[/tex]

=>       [tex]\frac{v(x)}{v(x)} =\frac{  Ae^{-\alpha d}cos(\beta x  + \phi_o)}{ Ae^{-\alpha d}cos(\beta x  + \phi_o)}[/tex]

So considering the ratio of the equation for the  two depth

[tex]\frac{A}{A_S}  =  \frac{e^{-D_1 \alpha }}{e^{-D_2 \alpha }}[/tex]

=>   [tex]\frac{98.02}{81.87}  =  \frac{e^{-10 \alpha }}{e^{-100 \alpha }}[/tex]

=>   [tex]\alpha  =  \frac{0.18}{90}[/tex]

=>    [tex]\alpha =  0.002 Np/m[/tex]

       

A major advantage of case studies is ________.

Answers

you get a lot of detailed information. hope this helped :)

A race car has a maximum speed of 0.104 km/s .What is this speed in miles per hour ?

Answers

Answer:

232.641374 mph

Explanation:

A race car has a maximum speed of 0.104km/s

Let X represent the speed in miles per hour

Therefore the speed in miles per hour can be calculated as follows

1 km/s = 2,236.936292 mph

0.104km/s = X

X = 0.104 × 2,236.936292

X = 232.641374

Hence the speed in miles per hour is 232.641374 mph

Speed of the car can be defined by the ratio of distance traveled by time elepsed. The speed of the given car is 233.212 miles/hr.

What is speed?

Speed can be defined by the change in position of an object in a given period of time.

[tex]\bold {Speed = \dfrac {Distance }{Time}}[/tex]

Given here,

The speed of the car is 0.104 km/s

Since 1 km = 0.621

So,  0.104 km = 0.0646

and 1 s = 0.000277

So, the speed of the car in  miles per hour,

[tex]Speed = \dfrac {0.0646 \rm \ miles }{0.000277}\\\\ Speed =233.212 \rm \ miles/hr[/tex]

Therefore, the speed of the given car is 233.212 miles/hr.

Learn more about unit conversion:

https://brainly.com/question/4736731

2. If you are driving at a constant velocity of 5 m/s what is your
acceleration?

Answers

constant velocity= 0 acceleration
acceleration= 0m/s^2
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which of the following characters cannot be used in filename? Evaluate g(x) = 4 3x when x= -3, 0, and 5. Does every quadratic equation have atleast one real solution? Explain. (1 point)A. Yes. When the discriminant is zero, there is exactly one solution. When the discriminant is not zero, there are two unique solutions.B. No. When the discriminant is greater than zero, there are no real solutions.C. Yes. When the discriminant is zero, there are two unique solutions. When the discriminant is not zero, there is exactly one solution.D. No. When the discriminant is less than zero, there are no real solutions. What is meant by the term ridge and valley Which of the following options correctly describe electromagnetic radiation? Select all that apply. Particles of electromagnetic radiation exhibit wave behavior. A particle of electromagnetic radiation is called a quantum. All electromagnetic radiation has the same frequency. Electromagnetic radiation includes visible light. The specific amount of energy a particular photon possesses is called a quantum. Practitioners of this type of ancient medicine believe in balance and interconnectivity, and they practice acupuncture. How did the great Awakening lead to shifting political beliefs in the colonies? What kinds of differences do you think existed between a colony dominated by Puritans and a colony dominated by planters? wich led to the creation of the church of england Please help me out! its urgent:( CAN SOMEONE HELP ME PLEASE??? im not sure about this please help Can you help me translate into equations plssssss!!1. Five more than twice a number is 7.2. Fourteen more than three times a number is 2.3. Seven less than twice a number is 5.4. Two more than four times a number is -10.6. Eight less than three times a number is 14.6. Three more than the quotient of a number and 2 is 7.7. The product of a number and 4 plus 2 is 14.8. Eight less than the quotient of a number and 3 is 5.9. The difference of twice a number and 3 is II.10. The sum of 3 times a number and 7 is 25. A football kicker boots the ball from the 15 yard line to the 35 yard line. The equation can be modeled by the the following: y = - .054(x - h)(x - k).....where h and k are where the football lands (x-intercepts). What was the maximum height that the football reached? Which statement describes the relationship between thermal energy and particle movement? what effect did the French and indian war have on the native American tribes who fought in ? Factor 15 + 50.5(10 + 3)5(3 + 10)3(5 + 25)10(5 + 5) For water, the value for the latent heat of vaporization is 6.8 times greater than the latent heat of fusion. Imagine we were adding heat at a constant rate to a block of ice in a beaker on a hot plate, and it took 4 minutes for the ice to melt completely. How long would it take, after the water started boiling, for the beaker to be completely empty (the liquid water totally converted to water vapor)? A scientist was in a submarine below sea level, studying ocean life. Over the next ten minutes, she rose 24.2 feet. How many feet had she been below sea level, if she was 0.5 feet below sea level after she rose? Which of the following is the correct representation of -780,030,000 in exponential notation?