A car is traveling at an average speed of 70 m/s. How many km would the car travel in 6.5 hrs. ?

Answer:

The angular velocity is: (2π radians) ⁄ (4.3 sec) = 1.461 rad/sec

The angular displacement is: (1.461 rad/sec)(1 sec) = 1.461 radians

Explanation:

The car's acceleration is -1.3 meters per the second square

To solve this, use the first equation of motion v=u+at

where, v = final velocity(meters per second )

           u = initial velocity(meters per second )

           a = acceleration(meters per second square)

           t = time (seconds)

According to the question,

Initial velocity(u) of the car = 28 meters per second

Final velocity(v) of the car  = 15 meters per second

Time  (t) = 10 seconds

Acceleration of the car(a) =?

Substituting the values in equation v =u+at

v= u+at

15 = 28 + ax10

15-28 = 10a

-13 = 10a

a = -13/10

a = -1.3 meters per second square

The car's acceleration is =  -1.3 meters per second square

To learn more about Newton's laws of motion, refer

https://brainly.com/question/29775827

The acceleration of this car is equal to -1.3 meters per seconds square (m/s²).

Mathematically, the acceleration of this car can be calculated by using this mathematical expression:

a = (V - U)/t

Where:  

Substituting the given parameters into the acceleration formula, we have;

Acceleration, a = (15 - 28)/10

Acceleration, a = -13/10

Acceleration, a = -1.3 m/s².

Read more on acceleration here: brainly.com/question/24728358

#SPJ1

Answer:

How much you pay in taxes depends on the amount of your taxable income

Explanation:

The total amount expected to be payed as taxes is a factor of the amount of taxable income earned within the given tax period.

The taxable income is found by subtracting the amount of deductions and exemption allowed in the tax year from the gross income. It is also specified as the adjusted gross income

The set marginal  tax rate indicates the percentage of the taxable income that is to be paid as taxes, such that there are three different ranges or tax brackets and taxes are paid according to the bracket to which a taxable income belongs.

Answer:

I believe the correct answer is d

Answer:

B

Explanation:

The mass of something before it's been processed is the same as it's mass after the process.

According to law of conservation of mass,mixture weighs the same as the weight of all parts of the mixture.

According to law of conservation of mass, it is evident that mass is neither created nor destroyed rather it is restored at the end of a chemical reaction .

Law of conservation of mass and energy are related as mass and energy are directly proportional which is indicated by the equation E=mc².Concept of conservation of mass is widely used in field of chemistry, fluid dynamics.

Law needs to be modified in accordance with laws of quantum mechanics under the principle of mass and energy equivalence.This law was proposed by Antoine Lavoisier in the year 1789. According to this law, mass of reactants is always equal to the product.

Learn more about law of conservation of mass,here:

https://brainly.com/question/28711001

#SPJ2

Answer: This is because they both weigh a pound. As the density of steel is much greater than the density of feathers, a pound of feathers would make up a much greater volume.

Explanation: brainliest plz :)

The quantity and orientation of orbitals in a specific sub-shell are principally determined by the magnetic quantum number. Azimuthal quantum number.

Also known as the orbital angular momentum quantum number, is hence necessary for its operation. The quantity and orientation of orbitals in a specific sub-shell are principally determined by the magnetic quantum number. Azimuthal quantum number, also known as the orbital angular momentum quantum number, is hence necessary for its operation. Check your understanding of magnetic quantum numbers.

Spin and orbital angular momentum together make up a body's total angular momentum. Another way to think of it is that angular momentum is a vector quantity that needs both the magnitude and the direction. The size of the angular momentum is for an object in orbit.

Learn more about angular momentum here

https://brainly.com/question/15104254

#SPJ4

The correct option is option 3.

To find the angular acceleration of the tire, we can use the formula:

angular acceleration (α) = (final angular speed - initial angular speed) / time

Given:

Number of revolutions (n) = 4.73 rev

Time (t) = 1.78 s

First, let's convert the number of revolutions to radians:

Angle (θ) = n * 2π

Substituting the values:

θ = (4.73 rev) * (2π rad/rev)

Now, we can calculate the initial angular speed (ω_initial) using the formula:

ω_initial = 0 rad/s (as the tire starts from rest)

Next, let's calculate the final angular speed (ω_final) using the formula:

ω_final = θ / t

Now, we can calculate the angular acceleration (α) using the formula:

α = (ω_final - ω_initial) / t

Substituting the values:

α = (ω_final - 0 rad/s) / t

Now, let's calculate the angular acceleration:

α = ω_final / t

Substituting the values:

α = (θ / t) / t

Calculating the result:

α ≈ 31.14749 rad/s²

Therefore, the angular acceleration of the tire is approximately 31.14749 rad/s².

To know more about angular acceleration.

https://brainly.com/question/30237820

#SPJ11

Answer:

Therefore letter C is the correct answer.

Explanation:

In a projectile motion the total time in the air can be calculated using the following equation:

We analyze the y-component motion.

\(v_{fy}=v_{iy}-gt\)

When the final velocity (v(f)) is equal to zero we calculate the upward time and multiplying it by 2 we find the total time in the air. So we will have:

\(t_{tot}=2\frac{v_{iy}}{g}\)

\(t_{tot}=2\frac{v_{i}sin(\theta)}{g}\)

We can see that the total time is directly proportional to the angle, then when θ increase t increase.

Therefore letter C is the correct answer.

I hope it helps you!  

Answer:

See below ~

Explanation:

What is happening to each event as the climate changes? Temperatures are increasing, carbon dioxide levels are increasing, the pH of the ocean is decreasing, sea levels are increasing, and the amount of sea ice is decreasing.

Here are orders of answers from start

The main reason behind these situations is global warming

The emmison of carbon dioxide has increased a lot which is getting harmful day by day

After using the angular diameter formula, we find that the diameter of the Moon is 2.098 million meters.

To find the diameter of the Moon, we can use the angular diameter formula:

Angular diameter = (diameter of the object) / (distance to the object)

Angular diameter = 0.524 degrees

Distance to the Moon = 3.84×10^8 m

We need to convert the angular diameter to radians:

Angular diameter in radians = (0.524 degrees) x (π/180)

Now we can rearrange the formula to solve for the diameter:

Diameter of the Moon = (Angular diameter in radians) x (Distance to the Moon)

Substituting the values into the formula:

Diameter of the Moon = (0.524 degrees x π/180) x (3.84×10^8 m)

Calculating the result:

Diameter of the Moon ≈ 2.098 × 10^6 m

Therefore, the diameter of the Moon is approximately 2.098 million meters.

To know more about angular diameter, visit:

https://brainly.com/question/13589970#

#SPJ11

Answer:

Current in first junction R1, R2 = 5 amps

Since current thru R2 = 3 amps the current thru R1 = 2 amps

V1 = V = I1 R1 = 15 volts

R1 = 15 volts / 2 amps = 7.5 ohms

The correct answer for how the albedo of polar regions affect insolation is: Low temperatures are maintained because of the high amount of reflection.

The albedo of a surface refers to its ability to reflect sunlight. Higher albedo means more sunlight is reflected, while lower albedo means more sunlight is absorbed. Polar regions, such as the Arctic and Antarctic, have high albedo due to the presence of ice and snow, which reflect a significant portion of incoming sunlight.

When sunlight hits the polar regions with high albedo, a large portion of it is reflected back into space rather than being absorbed by the surface. As a result, less solar energy is available to heat the surface, leading to lower temperatures in these regions.

Therefore, low temperatures are maintained in polar regions because of the high amount of reflection caused by their high albedo.

Learn more about insolation at: https://brainly.com/question/28716552

#SPJ11

1.44*10^-3N  is the force on each other. when 33 centimeters separates one charge from another charge. They both have charges of 1.2 x 10-5 coulombs.

Charge on the first sphere, q 1​ =1.2 x 10^-5  C

Charge on the second sphere, q 2 =1.2 x 10^-5  C

Distance between the spheres, r=30cm=0.3m

F= 4πε

​ q 1 q 2/  r2

​Where, ε 0

​ = Permittivity of free space 4πε 0

=9×10^9Nm2

F= (0.33) 2

1.2 x 10^-5 * 1.2 x 10^-5  C = 1.44*10^-3N

Hence, force between the two small charged spheres is 1.44*10^-3N.

The charges are of same nature. Hence, force between them will be repulsive.

learn more about Charge here:

https://brainly.com/question/14467573

#SPJ4

Answer:

4-5 feet

Explanation:

Position cushions, pillows, or blankets around the set off camera. You can also produce better-quality sound by using two devices: position the camera about 4-5 feet away from the instructor, and then use a smaller separate device for recording the sound

Recommended camera-to-instructor distance for virtual coaching usually ranges from 6 to 10 feet. It balances close-ups and body language while appealing to viewers. However, factors like equipment, framing, and personal preference may influence this distance.

The recommended distance from the camera to the instructor when filming virtual coaching sessions could vary depending on several factors including the kind of equipment used, the framing required, and the instructor's personal preference for intimacy or distance. However, a general rule of thumb often used in broadcasts is about 6 to 10 feet. This distance allows for a comfortable half to full-body shot, balances facial details and body language, and appeals to viewers. It's paramount to maintain this distance to ensure that the virtual coaching sessions are engaging and effective.

https://brainly.com/question/34247123

#SPJ2

Answer: A. North Poles attract south poles

Explanation:

Opposite poles attract
Same poles repel

I have an image solution for this, don't worry.

Firstly, we can write the equation for the electric force. It is:

By applying our values we get

Now, if we remind ourselves of Newton's law, we know that

We know the mass, and we know the Force, so we can find out the acceleration, this gives us:

Thus

Our final acceleration is 0.122 m/s^2

Answer:

b

Explanation:

i know

Answer:

b one will not accelerate

The medium for an ocean wave is the ocean water which involves movement on the water body.

This is defined as a substance or material that carries the wave. In the case of ocean waves, the medium is referred to the ocean water.

The medium is not transferred when a water wave moves on a lake as energy is transported but the water molecules aren't which is why lakes have water present in them.

Read more about Water waves here https://brainly.com/question/10732902

The dishwasher would need to transfer 480 kJ of energy for 400 seconds, or 6 minutes and 40 seconds.

Power is determined by the product of force, velocity, and distance traveled (in the force's direction). For those looking to enter the teaching profession in the state of Uttar Pradesh, this is a fantastic opportunity. Voltage and current together produce electrical power P=VXI.

time = energy / power

480 kJ = 480,000 J

time = energy / power

time = 480,000 J / 1200 W

time = 400 seconds

Hence, for the dishwasher to transfer 480 kJ of energy, it would take 400 seconds, or 6 minutes, 40 seconds.

To know more about energy visit:-

https://brainly.com/question/1932868

#SPJ1

The lunar phases are caused by the relative positions of the Earth, Moon, and Sun. The Moon orbits the Earth once every 29.5 days, and as it does so, we see different portions of the illuminated side of the Moon. These different portions of the Moon are called phases. There are eight primary phases of the Moon: New Moon, Waxing Crescent, First Quarter, Waxing Gibbous, Full Moon, Waning Gibbous, Third Quarter, and Waning Crescent.

An eclipse occurs when one celestial object moves into the shadow of another. There are two types of eclipses: solar and lunar. A solar eclipse occurs when the Moon passes between the Earth and the Sun, blocking the Sun's light and casting a shadow on the Earth. A lunar eclipse occurs when the Earth passes between the Sun and the Moon, casting a shadow on the Moon.

To explain these phenomena, teachers can use different methods such as diagrams, animations or models. For example, teachers can use a lamp to represent the Sun, a small ball to represent the Moon and a larger ball to represent the Earth. By moving the Moon around the Earth, the phases of the Moon can be demonstrated. To show eclipses, the Moon can be moved between the Earth and the Sun, or the Earth can be moved between the Sun and the Moon.

Using these methods can be an effective way of demonstrating the phases and eclipses to students. Teachers can also use animations and videos to help students visualize these events. It is important to note that these models and demonstrations are not perfect representations of the actual events, as they simplify the complex motions and distances involved in the interactions between celestial bodies.

Name of person taught: John

John said: "I learned a lot from the model that my teacher showed me. It was very helpful to see how the phases of the Moon and eclipses occur. The demonstration with the lamp and the balls really helped me understand the concepts. I also appreciated the videos that my teacher showed me, as they helped me see the events from different perspectives."

To know more about Moon and eclipses, visit:

https://brainly.com/question/9180257

#SPJ1

Answer:FASTEST AND BEST ANSWER GETS BRAINLIEST AND THANKS!

Include a picture, video, or diagram of your model of lunar phases or eclipses.

Provide a description of how you made your model and how it demonstrates eclipses or lunar phases.

Include a one-paragraph reflection on the success of your model in explaining your event.

Include the name of the person you taught about your event and that person's description of what they learned from your model.

Explanation:

wawa wawa

Answer:

B.C AND maybe E

Explanation:

A neutron star is as dense as The Nucleus of an Atom . Option C is correct.

The collapsing core of a large supergiant star with a total mass of between 10 and 25 solar masses—possibly even more if the star was very metal-rich—is what we refer to as a neutron star. Neutron stars are the tiniest and densest class of stellar objects currently known, with the exception of black holes and other hypothetical phenomena.

When a big star runs out of fuel and collapses, neutron stars are created. The core of the star, which is its most central portion, collapses, fusing every proton and electron into a neutron.

Read more on neutron star here:https://brainly.com/question/14926350

#SPJ1

Answer:

P = 1000J/s

Explanation:

P = W÷ t

P = ( 250N × 20M ) ÷ 5s

P = 5000J ÷ 5s

P = 1000J/s

The impact speed will be

v^2 = 2*9.8*1.3

v^2 = 25.48

v= 5.04 m/s or O C. 5.0 m/s

The magnitude of the vector displacement is 15.65 m.

The resultant force acting on the object is calculated as follows;

\(F = \sqrt{F_x^2 + F_y^2} \\\\F = \sqrt{4^2 + 6^2} \\\\F = 7.21 \ N\)

The displacement of the vector is calculated as follows;

W = Fs cosθ

\(s = \frac{W}{Fcos(\theta)} \\\\s = \frac{106}{7.12 \times cos(18)} \\\\s = 15.65 \ m\)

Learn more about work done by vector here: https://brainly.com/question/25573309