Which value is NOT equivalent to the others?

Multiple choice question.

A)
5 × 1011 nm


B)
0.5 km


C)
500 m


D)
5000 cm

Answers

Answer 1

Answer:

A) 5 × 1011nm

I think It's A


Related Questions

The brakes of a 1600kg vehicle travelling at 15ms on a level road are applied long enough to do 90kJ work. Find the final speed of the vehicle. What is the amount of work required to stop the vehicle?​

Answers

The First, we need to find the initial kinetic energy (KE) of the vehicle. We can use the formula KE = 0.5 * m * v^2, where m is the mass (1600 kg) and v is the initial velocity (15 m/s).  Coinitial = 0.5 * 1600 * (15^2) = 0.5 * 1600 * 225 = 180,000 J. the amount of work required to stop the vehicle is also 180,000 J.


The need to determine the final kinetic energy (KE) after the brakes have done 90,000 J of work. Since work done by the brakes is used to decrease the vehicle's kinetic energy, we subtract this work from the initial KE Cofinal = Coinitial - Work brakes = 180,000 J - 90,000 J = 90,000 J Now, we can find the final velocity (vicinal) of the vehicle using the Cofinal and the same formula as before 90,000 J = 0.5 * 1600 * v_final^2  Solve for vicinal  v_final^2 = 90,000 / (0.5 * 1600) = 112.5  vicinal = sqrt (112.5) ≈ 10.61 m/s So, the final speed of the vehicle is approximately 10.61 m/s. To find the amount of work required to stop the vehicle, we need to completely eliminate its kinetic energy. In this case, the initial kinetic energy is 180,000 J. Therefore, the amount of work required to stop the vehicle is also 180,000 J.

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How do you calculate time given the acceleration and distance?​

Answers

Explanation:

acc is velocity over time and the velocity rule is distance over time ..so acc would be distance over time power2

what is Archimedes principal ?​

Answers

The Archimedes principle is a principle that is expressed as a law that states that a body immersed in a fluid, whether fully or partially, is subject to an upward force of the same magnitude as the weight of the fluid it displaces.

Hope this helps :)

A storm cloud has a charge of +0.35 C. Due to polarization, the top of a tree gains a charge of -0.02 C. The cloud moves to 150 meters above the tree. Find the amount of force between the cloud and the tree and tell whether it attracts or repels.

Answers

Given data

*The given storm cloud has a charge is q = +0.35 C

*The tree gains a charge is Q = -0.02 C

*The distance between them is r = 150 m

*The value of the Coulomb's constant is k = 9 × 10^9 N.m^2/C^2

The formula for the amount of force between the cloud and the tree is given as

\(F=\frac{kqQ}{r^2}\)

Substitute the known values in the above expression as

\(\begin{gathered} F=\frac{(9\times10^9)(0.35)(-0.02)}{(150)^2} \\ =-2.8\times10^3\text{ N} \end{gathered}\)

Here the negative sign indicates that the charges are attractive in nature.

Hence, the amount of force between the cloud and the tree is F = -2.8 × 10^3 N

PLEASE HELP ME suppose you ride a bicycle around the ,returning to your starting point. At the end of your trip is your average speed greater than, less than, or equal to the magnitude of your average velocity? Explain

Answers

Answer:

Greater than

Explanation:

Distance is the length of the path traveled.  Displacement is the difference between the final position and initial position.

Speed = distance / time

Velocity = displacement / time

Since you return to your starting point, your displacement is 0 m, so your average velocity is 0 m/s.  Therefore, your average speed is greater than your average velocity.

Speed ls a function of distance and time, while velocity is a function of displacement and time. Since the rider returned to his starting point, then the magnitude of the average speed is greater than the magnitude of the average velocity

Average speed = \(\frac{distance}{time} \)

Average velocity = \(\frac{displacement}{time} \)

The total distance traveled will be sum of the 'to' and 'fro' distance.

The total displacement will be 0 (Final position - Initial position) ; since the rider returned to his starting position.

This means the average velocity will be 0 while the average speed will have a value greater than 0.

Therefore, the average speed will be greater.

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Expresa en notación científica los siguientes números en notación científica estándar: a) 9367421= b) 7241= c) 0.0005519= d) 0.02=

Answers

Answer:

so yeah it is Respuesta

The speed of
a bus rs 72km/hr. Convert it into
si system dimensionally

Answers

Answer:

Speed = 20 m/s

Explanation:

The speed of a bus is 72 km/h

The SI unit of speed is m/s

We need to convert it into m/s

We know that,

1 km = 1000 m

1 h = 3600 s

It means,

\(s=72\ \dfrac{km}{h}\\\\=\dfrac{72\times 1000\ m}{3600\ s}\\\\=20\ m/s\)

So, the speed of the bus is 20 m/s.

How do bubbles support the atomic theory?
A. The bubbles are lighter than air.
B. There is matter that cannot be seen inside the bubbles.
C. The bubbles will burst before long.
D. The bubbles cannot be broken into smaller pieces.

Answers

Answer:

The answer is probably B or C

Option B supports the atomic theory. Thus, this option is correct.

Atomic theory is the theory which states that matter is composed of particles called atoms. It tells us that all the matters are made of very tiny particles called atoms and all atoms of the same kind have the same size in any object.

Let's look at all the options given,

A-The bubbles are lighter than air- The bubble consists of water and air thus they are not lighter than air. This statement does not tell anything about the atomic theory. Hence this option is not correct.

B. There is a matter that cannot be seen inside the bubbles-The bubble is made up of two kinds of atoms one is oxygen and another is hydrogen. When we feel air into a soap bubble solution molecules want to attract to each other again so they wrap around the burst of air to attach to each other again. These atoms cannot be seen inside the bubbles but this option support the atomic theory. Thus, this option is correct.C. The bubbles will burst before long-In the bubble there is water. When this water loss in some way the bubble pops up. This water can be lost when it comes to contact with dry fingers or objects. It can be burst when the atmosphere is very dry. All the atoms are attracted towards.

D. The bubbles cannot be broken into smaller pieces-This option does not support the atomic theory thus this is not the correct option.

Hence the option B supports the atomic theory. Thus, this option is correct.

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What is the magnetic force on a proton that is moving at 2.5 × 107 m/s up
through a magnetic field that is 0.12 T and pointing toward you? The charge
on a proton is 1.6 x 10-19 C. Use F = qvx B sin(e).
A. 4.8 x 10-13 N left
OB. 4.0 × 10-12 N down
x
C. 4.8 x 10-13 N right
D. 4.0 × 10-12 N up
X

Answers

4.8× 10^-11 weber is the magnetic force on a proton that is moving at 2.5 × 10^7 m/s up through a magnetic field that is 0.12 T

F=qBv

q=1.6 x 10^-19 C

v=2.5 × 10^7 m/s

B=0.12T

F=qBv

F=1.6 x 10^-19 C×2.5 × 10^7 m/s×0.12T

F=4.8× 10^-11 weber

A magnetic force, attraction, or repulsion is produced by the motion of electrically charged particles. It is the underlying force that causes phenomena like the operation of electric motors and the attraction of magnets to iron. There are electric forces acting on stationary electric charges, and there are magnetic and electric forces acting on moving electric charges. The magnetic force between two moving charges is the effect of a magnetic field produced by one charge on another charge.

The intensity of the magnetic field B1 produced by the first moving charge, the sine of the angle theta, the second particle's charge q2, its velocity v2, and the magnetic force F are all inversely related in this hypothesis.

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A train travels 120 miles in 2.5 hours. What is its average speed?

Answers

Answer: 48 mph

Explanation: 48*2.5=120

Hypothetically speaking, if an object were located at the center of the Earth, the gravitational force on that object due to the surrounding Earth, assuming matter is uniformly distributed, would have which of the following values?
a) The force would be approximately the same value as if the object were on the surface of the Earth.
b) The force would be much greater than the value if the object were on the surface of the Earth.
c) The force would be somewhat less than the value if the object was on the surface of the Earth, but it would be greater than zero newtons.
d) The force would be zero newtons.

Answers

Answer:

D. ) The force would be zero newtons

Explanation:

Because

If you are at the center of the earth, gravity is zero because all the mass around you is pulling "up" (every direction there is up!)

So F=mg so if g is zero F is also zero

(A)derive the equation for circular motion,a=rw^2, where a is the centripetal acceleration w is the angular velocity and r the radius of the circle

(B) (i) the moon orbits the earth in a circle of radius 400000km. considering only these two objects, state what force act on the moon and explain how newton third law of motion applies to the system.

(ii) find the time for one complete revolution of the moon about the earth.

Answers

The equation for centripetal acceleration can be written as follows : a = v² / r = (rw)² / r = r × w² , the relationship between angular velocity and linear velocity : v = r × w

Evaluation :

A.The following equation can be used to calculate the centripetal acceleration during a circular motion:

Consider a particle of mass m traveling at an angular velocity w in a circle of radius r. The particle's velocity is calculated as v = rw, where v is its linear velocity.

The net force exerted on the particle can be calculated using Newton's second law as follows:

                                      F = m × a,

where a is the particle's acceleration.

The centripetal force is the net force exerted on the particle, which must be directed toward the circle's center.

As a result, the equation for centripetal acceleration can be written as follows:

                     a = v² / r = (rw)² / r

                               = r × w²

This equation is usually written as:

                                       a = r × w².

What is the Third Law of Motion of Newton?

According to Newton's third law of motion, there is an equal and opposite reaction to every action. The gravitational force exerted by the moon in this system is the same as that exerted by the Earth in this system. Newton's third law of motion, also known as the action-reaction pair of forces, describes this phenomenon.

B) (i) The equation below describes the gravitational force that is exerted on the moon:

                               F =G × (m_earth × m_moon) / r²

G is the gravitational constant, m_earth is the Earth's mass, m_moon is the moon's mass, and r is the distance between the Earth's and moon's centers.                  

(ii) We need to divide the circumference of the moon's circular path by its linear velocity in order to determine the time it takes for the moon to complete one complete revolution around the Earth:

                          C = 2 × pi × r

                               v = C / T

where C is the circumference of the moon's circular path, r is the circular path radius, T is the time it takes to complete one revolution, and v is the moon's linear velocity.

We obtain: by substituting the values:

                 C = 2 × pi × 400000 km = 800000 × pi km

                            v = C / T = (800000 × pi km) / T

We need to know the moon's angular velocity in order to calculate the time. These numbers indicate the relationship between angular velocity and linear velocity :

                       v = r × w

Substituting the values, we get:

                                T = C / (r × w)

                        = (800000 × pi km) / (400000 km × w)

                               = 2 × pi / w

Since the angular velocity w is not specified, it is not possible to determine how long it would take for the moon to complete one complete revolution around the Earth.

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what event occurred that caused co2 levels to change at a faster rate from thousands of years ago?

Answers

Human activities such as burning of fossil fuels caused carbon dioxide levels to change at a faster rate from thousands of years ago.

What is Carbon dioxide?

This is a gas which is derived from carbon reacting with oxygen and is formed when fossil fuels such as coal are burnt in air.

The use of petroleum products from fossil fuels in automobiles and industries are responsible for the increase in carbon dioxide level.

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Two men standing on the same side of wall and at the same distance from It, such that they are 4oom apart when one fires a gun the other hears the first report in 1.2s and the second in 0.5s after the first. calculate 1) Velocity of sound in air . 2)the perpendicular distance of the men from the wall.

Answers

Answer:

1. 571.43m/s

2. 142.9m and 342.9m

Explanation:

1.Take the difference in time.

1.2-0.7=0.7 seconds

Take the distance between them and divide with differnce in time.

400÷0.7=571.43 seconds.

2.Take the time of the two men and divide by two.

0.5÷2= 0.25 secs

1.2÷2= 0.6 secs

multiply each with the velocity.

0.25×571.43=142.9m

0.6×571.43=342.9m

What are the three cardinal wave rules?

Answers

The three cardinal wave rules are:
Superposition

Reflection

Refraction


1. Superposition Principle: When two or more waves meet at a point, the resultant wave's displacement is the algebraic sum of the individual wave displacements at that point.

2. Reflection: When a wave encounters a boundary or obstacle, it bounces back, changing direction while maintaining its speed, wavelength, and frequency.

3. Refraction: When a wave passes from one medium to another, its speed changes, causing the wave to change direction. This bending of the wave is known as refraction, and it's governed by Snell's Law.

These rules help to describe the behavior of waves in various situations and are fundamental to understanding wave interactions and propagation.

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True or false cells of humans and plants are same.​

Answers

False, we lack cell walls whereas they have cell walls.

how to use equation of continuity. Pleeeeeaaaase help​

Answers

Answer:

The continuity equation says that if charge is moving out of a differential volume (i.e., divergence of current density is positive) then the amount of charge within that volume is going to decrease, so the rate of change of charge density is negative.

Explanation:

I have included a picture

how to use equation of continuity. Pleeeeeaaaase help

Please help AP Physics!!!

A simple pendulum consists of a sphere tied to the end of a string of negligible mass. The sphere is pulled back until the string is horizontal and then released from rest. Assume gravitational potential energy is zero when the sphere is at its lowest point. What angle will the string make with the horizontal when the kinetic energy and the potential energy of the sphere-Earth system are equal?

Greater than 45°
Equal to 45°
Less than 45°
It cannot be determined without knowing the mass of the sphere.

Answers

Answer:

Explanation:

Less than 45!

The angle that the string will make horizontally while Kinetic Energy and Potential Energy being equal of the sphere-Earth system would be:

C). Less than 45°

Given that,

Gravitational potential energy = 0

Mass = negligible

Since the body is released from the state of rest and the sphere is present its lowest point, the angle(θ) that it creates would be :

\(mgh =\) \(\frac{1}{2} mv^2\)                       (\(v = L,\) θ)

θ = less than 45°.

θ < 45°

Thus, option C is the correct answer.

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A metal ball rolls from rest at Point A down the track to Point E as shown below.

At which point in the picture above is the velocity at its greatest?

Answers

Answer:

Explanation:

Velocity is at its greatest when kinetic energy is at its max which is when all the ball's energy has been transformed from potential energy to kinetic energy which is at the lowest point in its travels (assuming the ball is rolling down a ramp). You have no picture here so this answer is a general one, not a specific one.

a bock of lead has deminsions of 4.50cm by 5.20cm by 6.00cm, what is the volume

Answers

Answer:

Look at this picture this is the answer

Explanation:

a bock of lead has deminsions of 4.50cm by 5.20cm by 6.00cm, what is the volume




What are the usual symbols we are using for the following properties of a star? brightness luminosity apparent magnitude absolute magnitude temperature mass Notice that two symbols are the same, and t

Answers

The symbol "m" is used for both apparent magnitude and absolute magnitude, but they represent different quantities in different contexts.

The usual symbols used for the following properties of a star are:

- Brightness: Usually represented by the symbol "B" or "m". It refers to the amount of light received from a star as observed from a particular location.

- Luminosity: Represented by the symbol "L". It refers to the total amount of energy radiated by a star per unit of time.

- Apparent Magnitude: Represented by the symbol "m". It is a measure of the brightness of a star as observed from Earth. Lower values indicate brighter stars.

- Absolute Magnitude: Also represented by the symbol "m". It is the intrinsic brightness of a star, defined as the apparent magnitude a star would have if it were placed at a standard distance of 10 parsecs (32.6 light-years) from the observer.

- Temperature: Represented by the symbol "T". It refers to the surface temperature of a star, typically measured in Kelvin.

- Mass: Represented by the symbol "M". It is the amount of matter contained in a star, typically measured in solar masses (M☉).

Note: The symbol "m" is used for both apparent magnitude and absolute magnitude, but they represent different quantities in different contexts.

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2. A squirrel runs 15 m to the north and finds an acorn. The squirrel then turns back to the south
and runs 8 m, at that point he decides to change direction and runs 24 m to the east to bury his
acorn.

Answers

Answer:

24 m to the right/ to the east

Joe pushes a 12,000 N car, starting from rest, with a force of 310 N for 20 seconds. (a) What is the magnitude of the car's acceleration? (b) How much force would be needed to stop the car in a distance of 30 m?

Answers

The acceleration of the car can be obtained as  0.26 m/s^2. The force required to ove it a distance of 30 m is 11760 N.

What is the acceleration?

We know that the acceleration is the change in the velocity of the object with time. Now we know from the Newton law that the force is the product of the mass of the object and the acceleration.

Now we have that;

weight = mass * acceleration due to gravity

mass = weight/ acceleration due to gravity

mass = 12,000 N / 10 m/s^2

= 1200 Kg

The we know that;

Force = mass * acceleration

acceleration = Force/mass

=  310 N/1200 Kg

= 0.26 m/s^2

For the force that that is needed to move the car a distance of 30 m we have;

F = ma

= 1200 Kg * 9.8 m/s^2

= 11760 N

This is the force that ca move the object forward.

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What is the wavelength of radio waves broadcast by a radio station with a frequency of 1300khz

Answers

The wavelength of radio waves broadcast by a radio station with a frequency of 1300khz would be 230.76 m

What is Wavelength?

It can be understood in terms of the distance between any two similar successive points across any wave for example wavelength can be calculated by measuring the distance between any two successive crests.

The wavelength is inversely proportional to the frequency of the wave as from the following relation.

C = νλ

As given in the question  the wavelength of radio waves broadcast by a radio station with a frequency of 1300khz,

By using the formula

C = νλ

3×10⁸ = 1300 ×10³×λ

λ = 3×10⁸/ 1300 ×10³

  = 230.76 m

Thus,the wavelength of the radio waves comes out to be 230.76 m.

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6. If humans could unleash genetic modifications upon mosquitos that would eradicate the
species entirely, should they do it? Why or why not?

Answers

Answer:

Hope it helped brainiest plz and thank you!!!!!!1

Explanation:

3. If humans could unleash genetic modifications upon mosquitos that would eradicate the species entirely, should they do it?

No, they should not eradicate the mosquitos because they are part of the food chain for some animals.

What is the electric force between a +3 µC point charge and a –3 µC point charge if they are separated by a distance of 5.0 cm? Show your work. (µC = 1.0 × 10–6 C)

Answers

The electric force between a +3 µC point charge and a –3 µC point charge if they are separated by a distance of 5.0 cm can be calculated by using Coulomb’s law. F = kq1q2 / r²F = (9.0 × 109 N·m2/C2) × (3.0 × 10-6 C) × (-3.0 × 10-6 C) / (0.05 m)²F = -243 N

The electric force between a +3 µC point charge and a –3 µC point charge if they are separated by a distance of 5.0 cm can be calculated by using Coulomb’s law.

Coulomb’s law states that the electric force between two point charges is directly proportional to the product of the charges and inversely proportional to the square of the distance between them.

Mathematically, F = kq1q2 / r²where, F is the electric forceq1 and q2 are the magnitudes of the two charges is Coulomb’s constant (9.0 × 109 N·m2/C2)r is the separation between the two charges.

Let's use the values from the question to calculate the electric force: F = kq1q2 / r²F = (9.0 × 109 N·m2/C2) × (3.0 × 10-6 C) × (-3.0 × 10-6 C) / (0.05 m)²F = -243 N (the negative sign indicates that the force is attractive)Therefore, the electric force between the two charges is 243 N.

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Two particles are located in an x⁢y coordinate system. Particle 1 (mass m1=10.0 kg) is fixed at the origin. Particle 2 (mass m2=20.0 kg) is initially located on the x axis (θ=0) at distance r=2.00 m from the origin and particle 1.
1)For the given position of the two particles, express the gravitational force on particle 1 due to particle 2, F→12, in unit-vector notation. Give your answer in nanonewtons
F→12= 2)For the default position of particle 2, express the gravitational force on particle 2 due to particle 1, F→21, in unit-vector notation. Give your answer in nanonewtons 3)
What value for the angle θ in the range 0≤θ≤90° results in the following gravitational force on particle 1: F→12=(22.0 nN)i^+(8.88 nN)j^? 4)
What value for the distance r between the two particles results in the following gravitational force on particle 1: F→12=(22.0 nN)i^+(8.88 nN)j^?

Answers

1) The gravitational force on particle 1 due to particle 2 can be calculated using the formula:

F→12 = \(-G(m_1m_2/r^2) * \hat u_{12}\)

Where G is the gravitational constant, r is the distance between the particles, and

ȕ→12 is the unit vector pointing from particle 1 to particle 2.

In this case, since particle 1 is fixed at the origin, we have:

r = 2.00 m

ȕ→12 = \(cos(0) \hat i + sin(0) \hat j = \hat i\)

Substituting the given values, we get:

F→12 = \((6.67 * 10^{-11} Nm^2/kg^2) * (10.0 kg) * (20.0 kg) / (2.00 m)^2 * \hat i\)

F→12 = \(3.34 nN \hat i\)

2) The gravitational force on particle 2 due to particle 1 can be calculated using the same formula as above, but with the masses and distance interchanged, and ȕ→21 pointing from particle 2 to particle 1:

F→21 =\(-G(m_2m_1/r^2) * \hat u_{21}\)

Given,

r = 2.00 m

ȕ→21 = \(cos(180^o) \hat i + sin(180^o) \hat j = -\hat i\)

Substituting the given values, we get:

F→21 = \(-(6.67 * 10^{-11} Nm^2/kg^2) * (20.0 kg) * (10.0 kg) / (2.00 m)^2 * (-\hat i)\)

F→21 \(= -3.34 nN \hat i\)

3) To find the value of θ that results in the given force F→12, we can use the components of the force in the i^ and j^ directions:

F→12 = (22.0 nN) i^ + (8.88 nN) j^

The \(\hat i\)component of the force is related to the cosine of θ, and the j^ component is related to the sine of θ:

F→12,i = F→12 · i^ = 22.0 nN

F→12,j = F→12 · j^ = 8.88 nN

Using the inverse cosine and sine functions, we can find the angle whose cosine is F→12, i divided by the magnitude of the force, and whose sine is F→12, j divided by the magnitude of the force:

θ = \(cos^{-1}\) (F→12,i / |F→12|) = \(cos^{-1}\) (22.0 nN / \(\sqrt {(22.0 nN)^2 + (8.88 nN)^2}\))

θ = 21.98°

4) To find the value of r that results in the given force F→12, we can use the magnitude of the force and the formula for the magnitude of the gravitational force between two particles:

|F→12| = \(G(m_1m_2/r^2)\)

Solving for r, we get:

r = \(\sqrt{Gm_1m_2/r^2}\) / |F→12|)

Substituting the given values, we get:

r = \(\sqrt{(6.67 * 10^-{11} Nm^2/kg^2) * (10.0 kg) * (20.0 kg)}\)/ ((22.0 nN)^2 + (8.88 nN)^2))

r = 0.75 m (rounded to two significant figures)

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A robot that is exploring the surface of Mars has a mass of 136 kg. If the gravitational force acting on the robot is 504.6 N downward, what is the free-fall acceleration on Mars?

Answers

The free-fall acceleration on Mars is 3.71 m/s²

What do you mean by free fall?A body is said to be in freefall when it only moves in relation to the Earth's gravity. An external force exerted on the ball will cause its motion to accelerate. Gravitational acceleration is another name for this rate of free fall.According to Newton's second law of motion, force (F) = mass (m) times acceleration, an item in free fall will move with an acceleration (a). We can use a little mathematics to determine the object's acceleration in terms of the net external force and the object's mass (a = F / m).

Given :

gravitational force acting on the robot is 504.6 N

F= 504.6 N

mass of the robot  = 136 kg

a = F/ m

= 504.6/ 136 =3.71 m/s²

The free-fall acceleration on Mars is 3.71 m/s²

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A solar-powered car has a kinetic energy of 110250 J. Its mass is 180 kg. Work out how fast the car is travelling Enter a number m/s​

Answers

Answer: Velocity = v = 35 m/s

Explanation:

Kinetic energy of an object is defined as the energy possess by an object due to its motion. Kinetic energy K.E of an object is equal to the half of the mass of that object multiplied by square of the object's velocity.

Mathematically,

v = 35 m/s

A solar-powered car has a kinetic energy of 110250 J. Its mass is 180 kg. Work out how fast the car is

If the coefficient of static friction between a patient and the bed sheets is 1.2, what is the maximum angle (θ) at which the bed can be tilted with respect to the floor before the patient begins to slide?a) 45°b) 60°c) 30°d) 50°e) 25°

Answers

The maximum angle at which the bed can be tilted with respect to the floor before the patient begins to slide is 45°.

This is because the coefficient of static friction (μs) between the patient and the bed sheets is 1.2, and the coefficient of static friction is equal to the tangent of the angle of inclination (θ):

μs = tan θ. Therefore, 45° is the maximum angle before the patient begins to slide.

Static friction is the friction force that resists the initiation of motion. It is the force that one object exerts on another when they are not yet moving relative to each other. The coefficient of static friction is typically represented by the Greek letter μs, and is usually greater than the coefficient of kinetic friction (μk). The value of μs depends on the materials of the two objects that are in contact with each other.

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