Which of the following is not a unit of mass? A) gram B) kilogram C) milligram D) Newton

Answer:

–735.17 N

The negative sign indicate that the force is acting in opposition direction to the car.

Explanation:

The following data were obtained from the question:

Mass (m) of car = 782.10 kg

Initial velocity (u) = 7.60 m/s

Final velocity (v) = 3.61 m/s

Time (t) = 4.23 s

Force (F) =?

Next, we shall determine the acceleration of the car. This can be obtained as follow:

Initial velocity (u) = 7.60 m/s

Final velocity (v) = 3.61 m/s

Time (t) = 4.23 s

Acceleration (a) =?

a = (v – u) / t

a = (3.61 – 7.60) / 4.23

a = –3.99 / 4.23

a = –0.94 m/s²

Finally, we shall determine the force experienced by the car as shown below:

Mass (m) of car = 782.10 kg

Acceleration (a) = –0.94 m/s²

Force (F) =?

F = ma

F = 782.10 × –0.94

F = –735.17 N

The negative sign indicate that the force is acting in opposition direction to the car.

Answer:

Vector quantities are important in the study of motion. Some examples of vector quantities include force, velocity, acceleration, displacement, and momentum. The difference between a scalar and vector is that a vector quantity has a direction and a magnitude, while a scalar has only a magnitude. Vector, in physics, a quantity that has both magnitude and direction. It is typically represented by an arrow whose direction is the same as that of the quantity and whose length is proportional to the quantity's magnitude. A quantity which does not depend on direction is called a scalar quantity. Vector quantities have two characteristics, a magnitude and a direction. The resulting motion of the aircraft in terms of displacement, velocity, and acceleration are also vector quantities. A vector quantity is different to a scalar quantity because a quantity that has magnitude but no particular direction is described as scalar. A quantity that has magnitude and acts in a particular direction is described as vector.

Explanation:

As motion is described by physical variables that are described by Magnitude and Direction. Motion is determined by three variables: Position, Velocity and Acceleration.

Mathematically and physically speaking, Scalars are entities than can be represented only by Magnitude, whereas Vectors are entities that are represented both by Magnitude and Direction.

The Motion of the Object is described by three physical Variables: Position, Velocity and Acceleration, which are defined both by Magnitude and Direction.

Answer:

Con Agra and Sare Lee

Explanation:

Answer:

C

Explanation:

mass is inversely related to acceleration.

So, when a force F is applied on a heavy object, it will accelerate at a slower rate than when that same force F is applied to a lighter object.

The heaviest object here is the 20 kg wagon full of sand thus, it will have the slowest acceleration.

Answer:Answer is 66.66666666666667

Explanation:all you have to do is divide 200/3

Answer:

66 seconds

Explanation:

time=distance/speed

200/3=66.6

Answer: Contant.

Explanation:

You are given that When the boat moves the force of resistance is proportional to the velocity of the boat. This means that the total momentum on the boat is equal to zero. Then the boat remains at a certain position.

When a person walks from the stern to the bow of the boat, the boat will tend to move in the opposite direction with equal magnitude of momentum. The magnitude of forces will thereby cancel out.

The person will be seen moving while the boat moves in the opposite direction.

If no external force is acting on the boat, the sum of the momentum of the person and the boat will be equal to zero. And the boat will remain at rest.

The position of the boat long time after the person stopped moving will therefore remain the same.

Answer:

 v = 344.1 m / s    

 d = 1720.5 m

Explanation:

For this problem we must calculate the speed of sound in air at 22ºC

           v = 331 RA (1+ T / 273)

we calculate

           v = 331 RA (1 + 22/273)

           v = 344.1 m / s

the speed of the wave is constant,

           v = d / t

           d = v t

we calculate

           d = 344.1   5

           d = 1720.5 m

The correct explanation for the movement of the compass needle when the direction of the voltage on the battery is switched is (C) The current in the wire produced a magnetic field.

Voltage, also known as electric potential difference, is a measure of the electric potential energy per unit of charge in an electrical circuit. It is the force that drives the flow of electric charge in a circuit. Voltage is usually measured in volts (V) and is represented by the symbol "V".

When an electric current flows through a wire, it creates a magnetic field around the wire. The direction of the magnetic field depends on the direction of the current flow.

This magnetic field interacts with the Earth's magnetic field and causes the compass needle to move. Therefore, as the direction of the current in the wire changes when the voltage on the battery is switched, the direction of the magnetic field around the wire also changes, causing the compass needle to move.

Learn about magnetic field here https://brainly.com/question/14411049

#SPJ1

Answer:

-5.55 m/s^2

Explanation:

To find the acceleration of the bus, we need to use the formula:

acceleration = (final velocity - initial velocity) / time

Here, the initial velocity of the bus is 80 km/hr, the final velocity is 60 km/hr, and the time taken to change the speed is 5 seconds.

First, we need to convert the speeds from kilometers per hour to meters per second, so that we can use the SI unit of acceleration, which is meters per second squared (m/s^2).

80 km/hr = 80 x 1000 m/3600 s = 22.22 m/s

60 km/hr = 60 x 1000 m/3600 s = 16.67 m/s

Now we can substitute the values into the formula:

acceleration = (final velocity - initial velocity) / time

acceleration = (16.67 m/s - 22.22 m/s) / 5 s

acceleration = -5.55 m/s^2

Therefore, the acceleration of the bus is -5.55 m/s^2.

Note that the negative sign indicates that the acceleration is in the opposite direction of the initial velocity.

Answer:

104 highest and 96 the lowest

Explanation:

it has an uncertainness of 4%Meaning 104%on the highest and 96 on the lowest

The tension in the string is 17.45 N. Tension is the force exerted by a string, rope, or cable on an object that is attached to it. In this case, the string is exerting tension on the ball, keeping it in a circular motion.

Mass of the ball, m = 0.25 kg

The radius of the circle, r = 0.60 m

The velocity of the ball at the top of the circle, v = 6.0 m/s

Let's find the tension in the string using the following steps;

At the top of the circle, the gravitational force is acting downwards and the tension force is acting upwards.

So, we can find the net force acting on the ball using the following equation:

Net force,

F = mv²/r

Where m is the mass of the ball

v is the velocity of the ball at the top of the circler is the radius of the circle

Substituting the given values, we get;

F = (0.25 kg) × (6.0 m/s)² / (0.60 m)

F = 15.0 N

Tension force,

T = F + mg

Where g is the acceleration due to gravity.

Substituting the given values, we get;

T = 15.0 N + (0.25 kg) × (9.8 m/s²)

T = 17.45 N

to know more about tension refer here:

https://brainly.com/question/30033702#

#SPJ11

Answer:

a) Fnet = 176.78N

b) Enet = 88.39 × 10⁵N/C

Explanation:

The torque required to take the disk from 0 rpm to 1800 rpm in 4.0s is 0.0684 N m.

To find the torque required to spin the disk, we need to use the formula:

torque = moment of inertia x angular acceleration.

First, we need to find the moment of inertia of the disk.

The formula for the moment of inertia of a disk is:

I = 1/2 x mass x radius^2. The mass of the disk is given as 240 g, or 0.24 kg.

The radius of the disk is half of the diameter, so the radius is 22 cm / 2 = 11 cm, or 0.11 m.

So the moment of inertia of the disk is:

I = 1/2 x 0.24 kg x (0.11 m)^2 = 0.001452 kg m^2

Next, we need to find the angular acceleration of the disk.

The formula for angular acceleration is:

angular acceleration = change in angular velocity / time.

The disk starts at 0 rpm and accelerates to 1800 rpm, so the change in angular velocity is 1800 rpm - 0 rpm = 1800 rpm.

We need to convert this to radians per second, so we multiply by 2π/60: 1800 rpm x 2π/60 = 188.5 rad/s.

The time is given as 4.0 s, so the angular acceleration is:

angular acceleration = 188.5 rad/s / 4.0 s = 47.1 rad/s^2

Finally, we can use the formula for torque to find the torque required to spin the disk:

torque = moment of inertia x angular acceleration = 0.001452 kg m^2 x 47.1 rad/s^2 = 0.0684 N m

So the torque required to take the disk from 0 rpm to 1800 rpm in 4.0s is 0.0684 N m.

Learn more about torque at

https://brainly.com/question/6855614

#SPJ11

The eight large, round bodies in the solar system that orbit, or revolve, around the sun and are usually ordered according to their distances from the sun are called planets.

These planets are classified as either terrestrial or gas giants. The terrestrial planets, which are closer to the sun, consist of Mercury, Venus, Earth, and Mars, they are characterized by their rocky composition and solid surfaces. The gas giants, located further from the sun, include Jupiter, Saturn, Uranus, and Neptune.

These planets are predominantly composed of gases, such as hydrogen and helium, and possess a more massive size compared to terrestrial planets, they also have numerous moons and ring systems. The order of the planets from the sun is Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. The distances between these planets and the sun, as well as their distinct compositions and characteristics, play a vital role in shaping the diverse environments found within our solar system. So therefore planets are the eight large, round bodies in the solar system that orbit, or revolve, around the sun and are usually ordered according to their distances from the sun,

Learn more about solar system here:

https://brainly.com/question/18631708

#SPJ11

Answer:

B

Explanation:

The 3 Ways to cooping with work related stress is to adopt healthy habits, seek social support, and engage in activities that promote relaxation.

The following are three ways to cope with work-related stress:

Exercise- Exercise is a simple yet effective way to reduce stress. When you exercise, your body releases endorphins that are natural mood boosters. Exercise helps to reduce the level of cortisol, which is a stress hormone. The best exercises to do when stressed include yoga, aerobics, walking, jogging, cycling, or dancing.

Engage in relaxation activities-  Engaging in relaxation activities such as meditation, deep breathing, or progressive muscle relaxation helps to relax your mind and body. Deep breathing helps to reduce muscle tension, lower blood pressure and reduce the level of cortisol in the body. Progressive muscle relaxation involves tensing and relaxing muscle groups in the body, one at a time. This technique helps to reduce muscle tension and improve relaxation.

Social support- Social support from family, friends, or colleagues can be a great way to cope with work-related stress. Talking to someone about your problems can help you to gain a different perspective on your situation and feel less isolated. Talking to a colleague can also help to create a supportive work environment. It is essential to identify a trusted confidant who can listen and provide support when you are feeling overwhelmed.

Learn more about stress -

brainly.com/question/26108464

#SPJ11

The type of radiation that can penetrate the dust clouds of our Galaxy, allowing us to see the spiral structure, is infrared radiation.

Infrared radiation has longer wavelengths than visible light, and it is able to pass through dust clouds more easily.

Dust particles tend to scatter and absorb shorter-wavelength light, such as ultraviolet and blue light, making it difficult for these wavelengths to penetrate through the dust.

However, infrared radiation has longer wavelengths that are less affected by scattering and absorption by dust particles.

As a result, infrared radiation can penetrate the dust clouds and reach our telescopes, allowing astronomers to observe and study the spiral structure of our Galaxy.

By detecting and analyzing the infrared radiation emitted by stars, gas, and other objects within the Milky Way

scientists can map out the distribution and structure of the spiral arms, as well as study the processes of star formation and stellar evolution that occur within these regions.

To know more about infrared radiation refer here:

https://brainly.com/question/30560971#

#SPJ11

Answer:

0.09 kg

Explanation:

f=0.27

a=3

m=f/a

m=0.27/3

m=0.09

Answer:  

P-type layer (base)

N-type layer (emitter)

P-type layer (collector)

Explanation:

To determine the mass of granite, we must first understand the definition of density. Density is defined as the amount of matter present in a substance per unit volume.

We use the formula: density = mass/volume to calculate the mass of a substance given its density and volume. To calculate the mass of 54.3 m³ of granite, we use the following steps:

Given Density of granite = 2700 kg/m³Given volume of granite = 54.3 m³Let us substitute the values in the formula of density:density = mass/volume Solving for mass, we get:mass = density × volume Substitute the given values of density and volume into the formula:mass = 2700 kg/m³ × 54.3 m³

The m³ unit in the volume cancels out, leaving us with kg as the unit for mass.

We then solve the equation to get the mass:mass = 146,610 kg

Therefore, the mass of 54.3 m³ of granite is 146,610 kg.

For such more question on density

https://brainly.com/question/26364788

#SPJ8

Answer:

Claim: The heart pumps more blood throughout the body when one exercises because exercise takes a lot of energy from the body.

Evidence: Heart rate went from 80 bpm to 120 bpm

Reasoning: Doing exercise takes a lot of energy to do, causing the circulatory system to have to work harder and pump more blood throughout the body in order to allow someone to be able to do a task that involves so much movement and energy.

Explanation:

Considering the coordinates of the radars as well as the direction of the object in order to determine the object's position in terms of distance and angle. Sincе thе radars arе situatеd at (0,0) and thе sеcond radar is on thе еast sidе of thе first onе, wе can assumе that thе first radar is locatеd on thе x-pivot and thе sеcond radar is locatеd on thе positivе y-hub.

Lеt's say thе objеct is dеtеctеd at coordinatеs (x, y). The objесt's y-coordinativity will be negative and its x-coordinativity positive as it approaches the southern direction in the first quadrant.

We can use the distancе formula to determine the object's diameter from its origin (0, 0):

Distancée = (x + y) 2 The angle can be calculated with trigonometry. The angle can be summarized as:

= arctan(y/x) ii) We must consider the circles of overlap for each radar in order to calculate the overlap from the radar signal intersection in the first quadrant.

Due to the fact that both radars have distinctive overlap and divide the covered area into circles, the overlapped area will be the intersection of these circles.

Thе ovеrlapping arеa can bе calculatеd by finding thе arеa of thе intеrsеction of two circlеs. The formula for the area of the intersection of two circles can be complex and depends on the specific radii and dimensions that exist between the circles' centers.

To know more about radars, visit:

brainly.com/question/31783853

#SPJ4

First thing's first, we need to find the Net Force of the system in order to solve for acceleration. Gravity and Normal Force cancel out, so we don't really have to worry about anything on the y-axis. However, looking at the x-axis, we see two forces: the Force of the push and Frictional Force.

This means that:

\(F_{net}\) = 500 - 100

\(F_{net}\) = 400 (N)

Recall that Force = Mass * Acceleration. Since we have the Force and Mass, we can easily solve for Accel:

F = ma

a = \(\frac{F}{m}\)

Plug the net force and mass into the equation:  

a = \(\frac{F}{m}\)

a = \(\frac{400}{50}\)

a = 8 (m/\(s^{2}\))

The box's acceleration is 8 m/\(s^{2}\)

If you have any questions about how I got to the answer, just ask :)

Answer:

Ok, the answer is because there will not be enough sunlight for a spacecraft to power all the way.

The acceleration of the car is found to be 36.8m/s²

The formula One car stops so, the final speed of the car (v) = 0 and the initial speed of the car is given 90m/s.

Distance covered by car ( s) = 110m.

Now we calculate the acceleration of the car by third equation of motion,

v²-u² = 2as

0-902 = 2a ×110

a = 902/2×110 = 36.8m/s².

Formula one cars can reach 60 mph from 0 in about 2.6 seconds. This may seem slow given their highest speed, but because much of their speed comes from aerodynamics, which performs better the faster the car is moving, they are unable to start with all of their power.

The rate of change of velocity with respect to time is known as acceleration. It’s SI unit is m/s².It is a vector quantity. Acceleration can be found out by the help of first and third equation of motion which are F= ma and v ²=u² + 2as.

To learn more about equations of motion, refer this link.

https://brainly.com/question/8898885

#SPJ4

a) The gravitational potential energy stored in the Egyptian pyramid is approximately\(1.6*10^{12} J\). b) The ratio of this energy to the daily food intake of a person \((1.2*10^7 J)\) is approximate \(1.3*10^5\).

a) For calculating the gravitational potential energy of the pyramid, use the formula:

Potential Energy = mass × gravity × height.

Given that the mass of the pyramid is\(6*10^9\)kg, the height is 27.0 m, and the acceleration due to gravity is approximate \(9.8 m/s^2\),  plug in these values to calculate the potential energy:

Potential Energy = \(6*10^9 kg * 9.8 m/s^2 * 27.0 m = 1587600000000 J = 1.58*10^1^2J\).

b) The ratio of this energy to the daily food intake of a person can be found by dividing the potential energy of the pyramid by the daily food intake:

\(Ratio = 1.56*10^1^2 J / 1.2*10^7 J \approx 1.3 * 10^5\)

This means that the gravitational potential energy stored in the pyramid is about \(1.3*10^5\) times larger than the daily food intake of a person.

Learn more about gravitational potential energy here:

https://brainly.com/question/3910603

#SPJ11

The example of a star burning hydrogen in its core is The Sun.

The correct option is (b).

The process of stars producing energy takes place through nuclear fusion.

The nuclear fusion occurs in the core of the star where the temperature is very high, and the pressure is very intense. The most common nuclear reaction that takes place is the fusion of hydrogen nuclei to form helium.

In the fusion process, four hydrogen atoms combine to form a helium atom.

In this process, some matter is converted into energy, which is released in the form of light and heat.

The energy produced in the core of the star then moves outwards towards the surface through radiation and convection.

HR diagrams display the temperature, color, and luminosity of stars.

The HR diagram can be used to determine the stage of a star's life cycle and the temperature and size of stars.

Hence, we can use the HR diagram to determine which stars are burning hydrogen in their core, which is what the Sun does.

Learn more about HR diagrams: brainly.com/question/20501368

#SPJ11

The internal pressure of the rock formation causes fluid to return to the surface through the wellbore,the fluid is called as flowback.

When the infusion interaction is finished, the internal pressure of the rock arrangement makes liquid re-visitation of the surface through the wellbore. This liquid is known as both "flowback" and "created water" and may contain the infused synthetics in addition to normally happening materials like saline solutions, metals, radionuclides, and hydrocarbons. The flowback and created water is regularly put away on location in tanks or pits before treatment, removal or reusing. Generally speaking, it is infused underground for removal. In regions where that isn't a choice, it could be dealt with and reused or handled by a wastewater treatment office and afterward released to surface water.

To know more about pressure, visit here:

https://brainly.com/question/4636868

#SPJ4

The pattern due to like and unlike charges are attached accordingly.

Charges that are similar repel each other whereas charges that are dissimilar attract. As a result, two negative charges repel each other, but a positive charge attracts a negative charge.

The attraction or repulsion is directed along the line formed by the two charges. The magnitude of the force is proportional to the square of the distance between the two charges.

Positive-positive/negative-negative charges are referred to as like charges, whereas positive-negative/negative-positive charges are referred to as unlike charges.

Learn more about charges at:

https://brainly.com/question/26708011

#SPJ1

Answer:

distance- I think it is 6 then the displacement is 13.41

Explanation: