If Richard does 70 Joules of work while lifting a box and exerting a force of 15 N. How far did he lift the box?

Answer:

The speed of the vehicle is 156 miles per hour.

Explanation:

Let suppose that the Maglev, that is, a vehicle who works on the principle of superconductive magnetic levitation, moves at constant speed. Hence, the speed of the vehicle (\(v\)), in miles per hour, is defined by this kinematic model:

\(v = \frac{s}{t}\) (1)

Where:

\(s\) - Travelled distance, in miles.

\(t\) - Time, in hours.

If we know that \(s = 624\,mi\) and \(t = 4\,h\), then the speed of the vehicle is:

\(v = \frac{624\,mi}{4\,h}\)

\(v = 156\,\frac{mi}{h}\)

The speed of the vehicle is 156 miles per hour.

Limestone and dolomite are the rocks present in the locations which leads to the formation of caves.

The type of rocks that once existed in these  locations are limestone and dolomite whereas the pH of the nearby groundwater is slightly acidic which is responsible for the formation of caves. Caves are formed by the dissolution of limestone due to acid rain.

Rainwater reacts with carbon dioxide from the air and percolates through the soil, which turns into a weak acid. This slowly dissolves out the limestone which become turn to form caves so we can conclude that Limestone and dolomite are the rocks present in the locations which leads to the formation of caves.

Learn more about caves here: https://brainly.com/question/7965722

Learn more: https://brainly.com/question/26111031

Answer:

In the words of Hartshorn and Alexander: “Economic Geography is the study of the spatial variation on the earth’s surface of activities related to producing, exchanging and consuming goods and services. Whenever possible the goal is to develop generalizations and theories to account for these spatial variations.”

Explanation:

For each pair Independent variable and the dependent variable is -

a. How much gas is left in the gas tank vs. how far the car has traveled.

b. How much money you've spent vs. how much money is in your wallet.

c. How far a toy car traveled vs. how much time went by​

An independent variable in any experiment or research is a variable that is manipulated or changed in the experiment, this change leads to a direct effect on the dependent variable.

A dependent variable is a variable that is directly affected by the independent variable and it is the variable that is measured or tested in an experiment.

Thus,

a. How much gas is left in the gas tank vs. how far the car has traveled.

b. How much money you've spent vs. how much money is in your wallet.

c. How far a toy car traveled vs. how much time went by​

Learn more about dependent variables:

https://brainly.com/question/1670595:

An electric iron is marked 120 volts and 500 Watts. The units consumed by it in using it for 24 hours can be calculated using the formula:Power (in watts) = Voltage (in volts) x Current (in amperes)P = V x I

For such more question on Voltage

https://brainly.com/question/14883923

#SPJ8

Answer:

a) The diagrams can be seen in the picture attached

(b) By comparing the diagrams we can conclude that the resultant R₁ = R₂ = R₃

Further explanation

Vector is quantity that has magnitude and direction.

One example of a vector is acceleration.

Acceleration is rate of change of velocity.

a = acceleration ( m/s² )

v = final velocity ( m/s )

u = initial velocity ( m/s )

t = time taken ( s )

d = distance ( m )

Let us now tackle the problem !

This problem is about Vector and Vector Diagram.

Given:

Vector A = -200 j

Vector B = -250 i

Vector C = (150 sin 30.0°) i + (150 cos 30.0°) j = 75 i + 75√3 j

Unknown:

R₁ = A + B + C = ?

R₂ = B + C + A = ?

R₃ = C + B + A = ?

Solution:

R₁ = A + B + C  = (-200 j) + (-250 i) + (75 i + 75√3 j)

R₁ = -175i + (75√3 - 200)j

R₂ = B + C + A = (-250 i) + (75 i + 75√3 j) + (-200 j)

R₂ = -175i + (75√3 - 200)j

R₃ = C + B + A  = (75 i + 75√3 j) + (-250 i) + (-200 j)

R₃ = -175i + (75√3 - 200)j

From the results above, it can be concluded that the resultants above produce the same results. This can be confirmed from the diagrams in the attachment.

Explanation:

The terminal velocity of the sphere is approximately 22.68 mph.

The terminal velocity of a sphere is the constant speed at which the gravitational force pulling the sphere down is balanced by the drag force pushing the sphere up. The drag force is proportional to the velocity of the sphere, and can be calculated using the following formula:

Fd = (1/2) * rho * Cd * A * v²

where Fd is the drag force, rho is the density of the fluid (air in this case), Cd is the drag coefficient (which depends on the shape of the object), A is the cross-sectional area of the object perpendicular to the direction of motion, and v is the velocity of the object.

The gravitational force pulling the sphere down is given by:

Fg = m * g

where m is the mass of the sphere and g is the acceleration due to gravity.

At terminal velocity, the drag force is equal in magnitude to the gravitational force, so:

Fd = Fg

Substituting the expressions for Fd and Fg and solving for v, we get:

v = √((2 * m * g) / (rho * Cd * A))

where A = pi * r² is the cross-sectional area of the sphere, and r is the radius of the sphere.

Plugging in the given values, we get:

v = sqrt((2 * 0.6 * 9.81) / (1.2 * 0.47 * pi * 0.3²)) ≈ 10.13 m/s

To convert this to mph, we multiply by 2.23694:

v ≈ 22.68 mph

To know more about terminal velocity, here

brainly.com/question/2654450

#SPJ1

Time: s (second)

Mass: kg (kilogram)

Length: m (meter)

The SI units (International System of Units) are a standard system of measurement used in science, engineering, and many other fields. They provide a universal language for expressing and comparing measurements. The SI units are based on seven fundamental physical quantities, and each of these quantities is associated with a specific base unit, which is defined independently of any other unit.

Seven base units of the SI system are:

Length: meter (m)

Mass: kilogram (kg)

Time: second (s)

Electric current: ampere (A)

Temperature: kelvin (K)

Amount of substance: mole (mol)

Luminous intensity: candela (cd)

To know more about engineering, visit:

https://brainly.com/question/19117846

#SPJ1

Answer:

34.3N

Explanation:

The normal force, denoted by F(N), is the force exerted on an object by a surface. The normal force in this case is acting in an opposite manner but equal magnitude to the force of gravity.

F(N) = Fg

Where;

F(N) = Normal force

Fg = gravitational force

Fg = mg

Where;

m = mass (kg)

g = acceleration due to gravity

F(N) = mg

F(N) = 3.5kg × 9.8m/s²

F(N) = 34.3N

Hence, the normal force acting on the object is 34.3N.

A program that could do an instantaneous analysis of video motion will be useful it in a sportscast to analyze events as they occur.

A motion video is defined as the display of video images at a rate (such as thirty frames per second) that causes objects to appear to move smoothly and continuously.

Sports inherently involve fast and accurate motion, which can be difficult for competitors to master but also for coaches and trainers to analyze and audiences to follow. Because of the nature of most sports, monitoring with sensors or other devices attached to players or equipment is generally not possible. This opens up a plethora of opportunities for the use of computer vision techniques to assist competitors, coaches, and the audience

Learn more about motion on:

https://brainly.com/question/27802581

#SPJ1

The stopping distances are found to be 218.13 m and 149 m, respectively, for

a = -2.6 m/s²

b = -5.5 m/s² with time 0.3 s.

Newton's equations of motion link an object's motion to the forces acting on it. According to the first law, an object won't change its motion until a force is applied to it. The second law states that an object's force can be determined by multiplying its mass by its acceleration. The third law states that when two things come into contact, they put equal and opposing pressures on one another.

Initial speed = U = 94Km/hr

=> 26.11m/s

a1 = -2.6m/s²

a2 = -5.5 m/s²

Final velocity = V = 0

t= 0.3sec

A) the stopping distance with a1 = -2.6m/s²:

V² = U² +2as

=> 0 = 26.11² + 2 x -2.6 x s

S=> 131.1 m

the stopping distance  

=> 26.11/0.3 + 131.1

=> 218.13m

B) the stopping distance with a2 = -5.5 m/s²:

V² = U² +2as

=> 0 = 26.11² + 2 x -5.5 x s

S=> 61.97 m

the stopping distance  

=> 26.11/0.3 + 61.97

=> 149m

Learn more about acceleration here:

brainly.com/question/2364355

#SPJ1

Answer:

(1) 1000 N (2) 1 m/s²

Explanation:

(1) Given that,

The mass of a car, m = 1000 kg

Radius of a circular track, r = 100 m

Speed of the car, v = 10 m/s

We need to find the magnitude of the centripetal force acting on the car. The magnitude of the centripetal force is given by :

\(F=\dfrac{mv^2}{r}\\\\F=\dfrac{1000\times (10)^2}{100}\\\\F=1000\ N\)

So, the correct option is (c) i.e. 1000 N

(2).The mass of a car, m = 1000 kg

Radius of a circular track, r = 100 m

Speed of the car, v = 10 m/s

We need to find the magnitude of the centripetal acceleration of the car. The magnitude of the centripetal acceleration is given by :

\(a=\dfrac{v^2}{r}\\\\a=\dfrac{(10)^2}{100}\\\\a=1\ m/s^2\)

So, the correct option is (b) i.e. \(1\ m/s^2\)

Answer:

u = 0.334 m/s

Explanation:

The formula for Reynold's number is given as follows:

Re = ρuL/μ

where,

Re = Reynold's Number = 2511

ρ = Density of air = 1.25 kg/m³

μ = Dynamic Viscosity of Air = 1.83 x 10⁻⁵ Pa.s

L = Characteristic Length = Diameter of Sphere = 11 cm = 0.11 m

u = Speed = ?

Therefore,

2511 = (1.25 kg/m³)(u)(0.11 m)/(1.83 x 10⁻⁵ Pa.s)

u = (2511)/(7513.66 s/m)

u = 0.334 m/s

Given that : magnitude of vector is 85 units and angle is 11 degree

X-component of vector is 85 cos (11 degree) = 83.385

which can be approximated as 83 units

Y-component of vector is 85 sin (11 degree) = 16.21

which can be approximated as 16 units

Thus, value of x component is 83 units and y-component is 16 units.

The option that correctly compares a pure substance to a mixture is: B. A pure substance can only be separated by chemical means, whereas some mixtures can be separated by physical means.

A pure substance can be defined as a substance that has a definite and constant (fixed) structure and they are typically made up of only a kind of particles. Thus, a pure substance is a chemical substance that has a constant (fixed) chemical composition and properties.

As a result of a pure substance being a chemical substance, it cannot be separated into its constituents by a physical separation technique or method.

Instead, a pure substance being a chemical substance can only be separated by chemical separation technique or method.

In contrast, mixtures can be separated by a physical separation technique or method.

Find more information: https://brainly.com/question/24615100

Supersonic flights are moving with speed greater than that of sound. This speed through air will combine the pressure waves and creates shock waves. Continuation of shock waves leads to sonic boom in air.

Sonic booms are sound created on the ground by overpressure in the air generated by fastly moving objects. Similar to someone dumping goods from a moving car, an aircraft travelling at supersonic speeds continuously produces shock waves that cause sonic booms to travel throughout its flight path.

The boom seems to be swept rearward as it moves away from the aeroplane from its point of view. The boom will strike the ground in front of the aircraft if the aircraft makes a rapid turn or pulls up.

The abrupt start and release of pressure following the building by the shock wave or "peak overpressure" is what is heard as a "sonic boom" on the ground. Only a few pounds per square foot change in pressure results from a sonic boom, which is about equivalent to the pressure shift we experience in an elevator.

Find more on sonic booms:

https://brainly.com/question/29136018

#SPJ9

If the 9 base sequence "aactgctc" had a mutation in the gene, it would result in a change in the nucleotide sequence.

The specific nature and consequences of the mutation would depend on the type of mutation that occurred.

Mutations can include substitutions, insertions, or deletions of nucleotides.

Substitutions replace one nucleotide with another, potentially altering the amino acid sequence during protein synthesis.

Insertions or deletions can shift the reading frame, leading to a frameshift mutation and potentially changing the entire amino acid sequence downstream.

The functional impact of the mutation would depend on its location within the gene and the resulting changes in the protein's structure or function.

For more such questions on mutation, click on:

https://brainly.com/question/29296485

#SPJ11

The full shopping cart will require more force to stop than the empty shopping cart.

This is because of its greater mass compared to the empty cart. Newton's second law of motion states that the force required to stop an object is proportional to its mass, i.e., F = ma, where F is the force, m is the mass, and a is the acceleration. Since both carts were pushed with the same force to reach the same constant velocity, the full cart has a greater mass and therefore requires more force to stop. The empty cart may be moving faster, but its lower mass means that it requires less force to stop.

To learn more about force visit;

https://brainly.com/question/13191643

#SPJ4

Explanation:

At the top of the the ball's trajectory, there is only the horizontal component of the initial velocity, which is \(v_0\cos30,\) so the kinetic energy of the ball at this point is

\(KE = \frac{1}{2}m(v_0\cos30)^2\)

\(\;\;\;\;\;= \frac{1}{2}(0.15\:\text{kg})[(40\:\text{m/s})\cos30]^2\)

\(\;\;\;\;\;= 90\:\text{J}\)

The magnitude of the resultant vector, representing the actual path of the boat, is approximately 1.42 m/s.

To find the magnitude of the resultant vector, we need to consider the boat's velocity and the velocity of the river. The boat's velocity is given as 0.75 m/s, and the river's velocity is given as 1.2 m/s.

Since the boat is moving in a river, we can think of the boat's velocity as a combination of two velocities: its own velocity and the velocity of the river. The resultant vector represents the actual path of the boat, considering both velocities.

To calculate the resultant vector, we can use vector addition. The magnitude of the resultant vector can be found by taking the square root of the sum of the squares of the boat's velocity and the river's velocity. Mathematically, we have:

Resultant magnitude = √(boat velocity^2 + river velocity^2)

Plugging in the given values, we have:

Resultant magnitude = √(0.75^2 + 1.2^2)

= √(0.5625 + 1.44)

= √2.0025

≈ 1.42 m/s

For more such questions on resultant vector,click on:

https://brainly.com/question/110151

#SPJ11

Answer:

920000

Explanation:

Each kg contains 1,000 grams

The initial mechanical energy of the car is equal to its final energy from this, we can find the speed of the car. The final velocity of the car at the time it hits the ground is 16.17 m/s.

Mechanical energy of an object is the sum of its kinetic and potential energy. According to law of conservation of energy initial mechanical energy of a moving object is equal to the final mechanical energy.

Given initial speed of the car u = 12 m/s

height from the surface = 6 m

g = 9.8 m/s²

According to conservation of energy,

1/2 mu² + mgh = 1/2 mv²

u²/2 + gh = v²/2

12²/2 + (9.8 m/s² × 6 m) = v²/2

v = 16.17 m/s.

Therefore, the final speed of the car at the time it hits the ground is 16.17 m/s.

Find more on conservation of energy:

https://brainly.com/question/12050604

#SPJ1

Two charged objects are separated a distance d,  the position vector of the object 1 with respect to the object 2 is P21 = d/2(√3i -j).

It is assumed in the problem that the origin is taken into account when determining the position of object 2. As a result, we may decompose the position vector of object 1 into its x and y components.

So, we can see from the diagram that the position vector's horizontal component is dcos30. This component is known as the x component because it lines up with the positive x axis. Hence, x=dcos30. Once more, dsin30 is the vertical component of the position vector. This component is known as the y component because it is congruent with the negative y axis. Hence, y=dsin30.

As a result, the position vector can be expressed as,

⇒P21=xi^+y(−j^)

The values P21=dcos30i+dsin30(j) are substituted

Now, the values of cos30 are 3-1/2 and sin30 are 12.

In order to substitute the values, we obtain P21=3-2di12dj.

Now, if we take the common, we get P21 = d/2(√3i -j).

This is the position vector of the object 1 with respect to the object 2.

Learn more about Position vector:

https://brainly.com/question/20553230

#SPJ4

Answer:

C. That the small portion of the space we can see is truly representative of all the rest of the universe that we cannot see.

Explanation:

The Cosmological Principle assumes that the small portion of the universe that we can see is representative of the entire universe, even though we can only directly observe a tiny fraction of it. It's an assumption used by Cosmologists to simplify their models of the universe.