You want to double the radius of a rotating solid sphere while keeping its kinetic energy constant. (The mass does not change.) To do this, the final angular velocity of the sphere must be A. four times its initial value. B. twice its initial value. C. the same as its initial value. D. half of its initial value. E. one-quarter of its initial value

The angular acceleration of the body &  through certain angle is 0.87266 rad/sec² and 12566.8rad respectively.

Given -angular velocity of a rotating rigid body increases from 500 to 1500 rev/min .

Time= 120s

To find - Angular acceleration and angle

Principle : We have to convert rev/min to rad/sec .

ωf= ωi + αt

ωf- ωi = αt

α= [ ωf- ωi ]/ t⇒angular acceleration formula

ΔФ=ωi t + αt²/2⇒ angle deviation formula

Calculations-

Conversion of Rev/Min to rad/Sec -

ωi= 500 rev/min

= 500 x 2π rad/rev x 1min/60sec = 52.3598 rad/sec

ωf= 1500 rev/min

=1500 x 2π rad/rev x 1min/60sec = 157.079rad/sec

ωi=52.3598 rad/sec

ωf=157.079rad/sec

Now , to compute angular acceleration- α= [ ωf- ωi ]/ t

= [157.079rad/sec- 52.3598 rad/sec]/120

α=0.87266 rad/sec²

Now to compute angle deviated -ΔФ=ωi t + αt²/2

=52.3598 x 120 + [0.87266 x 120 x120]/2

ΔФ= 12566.8rad

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Because charge is quantized, the answer is no.

White dwarfs emit ultraviolet and even x-ray radiation a. but have low magnitudes because they do not produce a lot of light.

These compact celestial objects are the remnants of low-mass stars, such as our Sun, that have exhausted their nuclear fuel and shed their outer layers. Although they are relatively cool compared to other stars, they are still hot enough to emit high-energy radiation in the ultraviolet and x-ray spectra. However, they do not emit much visible light, which contributes to their low magnitudes.

Despite their low light output in the visible spectrum, white dwarfs can still have large magnitudes because they produce a significant amount of light in other wavelengths, such as ultraviolet and x-ray. This makes them important astronomical objects for studying high-energy processes in the Universe. While white dwarfs are not the brightest gamma-ray sources in the galaxy, their emission in the ultraviolet and x-ray ranges highlights their importance in the study of stellar evolution and the end stages of a star's life cycle. White dwarfs emit ultraviolet and even x-ray radiation a. but have low magnitudes because they do not produce a lot of light.

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Answer:

Current is the same through all bulbs

Explanation:

Because it's a series circuit, the current traveling through the circuit doesn't change. In a parallel circuit, however, the current would not be the same due to the different 'paths' of the circuit.

The distance traveled by the car is -2025 /2a m, where a represents the deceleration.

Using the equation:

s = (v² - u²) / (2a)

Where:

Given:

Initial velocity (u) = 45 m/s

Final velocity (v) = 0 m/s

The equation becomes:

s = (0² - 45²) / (2a)

s = (-2025) / (2a)

s = -2025 / (2a)

Therefore, the distance traveled by the car in terms of deceleration (a) is -2025 / (2a).

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Answer: Mid-ocean ridges are geologically important because they occur along the kind of plate boundary where new ocean floor is created as the plates spread apart. Thus the mid-ocean ridge is also known as a "spreading center" or a "divergent plate boundary." The plates spread apart at rates of 1 cm to 20 cm per year.

Answer:  The mid-ocean ridge system is the most extensive chain of mountains on earth, but more than 90% of this mountain range lies in the deep ocean. The mid-ocean ridge wraps around the globe for more than 65,000 km like the seam of a baseball. The average depth to the crest (top) of the ridge is 2500 m, but it rises above sea-level in Iceland and is more than 4000 m deep in the Cayman Trough.

Answer:

the mack truck

Explanation:

The mack truck is more heavy and is larger than the Volkswagen.

The magnitude of the traveler's displacement is approximately 39.5 km.

To find the magnitude of the traveler's displacement, we can combine the individual displacements in a vector sum.

The first leg of the journey is a displacement of 21.0 km east. We can represent this as a vector in the positive x-direction: (21.0 km, 0 km).

The second leg of the journey is a displacement of 28.8 km southeast. We can break down this displacement into its x and y components. The southeast direction is a combination of east and south. The angle between the southeast direction and the positive x-axis is 45 degrees. Using trigonometry, we can find the x and y components:

x-component = 28.8 km * cos(45°) = 20.4 km

y-component = 28.8 km * sin(45°) = 20.4 km

So, the second displacement can be represented as a vector: (20.4 km, -20.4 km).

The third and final leg of the journey is a displacement of 10 km south. We can represent this as a vector in the negative y-direction: (0 km, -10 km).

To find the total displacement, we add the individual displacements:

(21.0 km, 0 km) + (20.4 km, -20.4 km) + (0 km, -10 km) = (41.4 km, -30.4 km)

The magnitude of the displacement is given by the Pythagorean theorem:

Magnitude = √((41.4 km)² + (-30.4 km)²) ≈ 39.5 km

Therefore, the magnitude of the traveler's displacement is approximately 39.5 km.

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Answer:

hope this helps

Explanation:

Of the three phases of matter (gas, liquid, and solid), sound waves travel the slowest through gases, faster through liquids, and fastest through solids

so your answer would be B.

The induced current in the loop will flow in a counterclockwise direction, as it opposes the change in magnetic flux and follows the right-hand rule.

To determine the direction of the induced current within the loop, we can use Lenz's Law and the right-hand rule.
Step 1: Lenz's Law states that the induced current will flow in a direction that opposes the change in magnetic flux through the loop. In this case, since the loop is being pulled to the right, the magnetic flux is decreasing.
Step 2: Using the right-hand rule, point your right thumb in the direction of the magnetic field (away from you). Then, curl your fingers in the direction of the loop's motion (to the right). The direction of your fingers curling indicates the direction of the induced current.
Based on these steps, the induced current in the loop will flow in a counterclockwise direction, as it opposes the change in magnetic flux and follows the right-hand rule.

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Answer:

I think the answer is D.)

Explanation:

If it means something needs to melt into liquid i would have gone with B.) or C.) but since it doesn't specifiy. I thought D.) since all you have to do is heat it and it melts or boils.

Answer: Large-scale surface ocean currents are driven by global wind systems that are fueled by energy from the sun. These currents transfer heat from the tropics to the polar regions, influencing local and global climate.

Explanation:

I hope this helped you some!

No. That would be silly.  The water in the tropics is the warmest, since the sun is most direct there.  

Any ocean current that takes water away from the tropics moves the water to cooler places, where the water cools off.  ESPECIALLY the poles, home of the coldest water on Earth.  ICE even !

Answer: C) thermal energy.

Explanation:The motion of Earth's molten rock (such as in the mantle) and the resulting patterns can be analyzed and explained scientifically by understanding the principles of thermal energy. This is because the movement of the molten rock is primarily driven by the transfer of heat and temperature differences within the Earth's interior, leading to processes like convection and heat conduction.

Answer:

825 Joules of energy would be correct if my math is right.

Answer:

tôi đoán lagf  pjhAWN ỨNG HÓA HỌC

Explanation:

I hope this helps

The picture shows the correct answer

Answer:

It is C on Edge 2020.

Answer:

Ccccccccccccccccccccccccccc

Explanation:

Ejenuwitee

C.)

your answer is c bro but if not then it's b

because you just choose c or b either one should work if you right it down right

Answer: A motionless object can have energy. The energy that the object has is called potential energy.

Explanation:

Answer: It's lack of mass production

It is biodegradable. It does not harm landfills. It doesn't cost much to recycle.

I cannot find anything about mass production or if it costs a lot to recycle.

From the information I know, operating costs were expensive. Cellulose is always recycled and is good for the environment meaning it can't cost much to recycle

Since operating costs were high, it most likely won't be mass produced because it's too expensive.

Therefore I think the answer is its lack of mass production.

Answer:

its lack of mass production

Explanation:

Answer:

Explanation:

The kinetic energy of an object can be found by using the formula

\(k = \frac{1}{2} m {v}^{2} \\ \)

v is the velocity

m is the mass

From the question we have

\(k = \frac{1}{2} \times 1300 \times {20}^{2} \\ = 650 \times 400 \\ = 260000\)

We have the final answer as

Hope this helps you

Answer:

direction should be the answer

Answer:

According to my calculations it equals to 16 pints

Explanation:

You know that there is a calculator online for this stuff right?

Answer:

By applying an unbalanced force, you can change the motion of an object. Unbalanced forces can make an object at rest start moving, make a moving object stop, or change the direction and speed of the object.

Explanation:

1.

a) Hydrogen chloride (HCl) - 1 hydrogen atom, 1 chlorine atom

b) Sulfur dioxide (SO₂) - 1 sulfur atom, 2 oxygen atoms

c) Ammonia (NH₃) - 1 nitrogen atom, 3 hydrogen atoms

d) Carbon monoxide (CO) - 1 carbon atom, 1 oxygen atom

2.

a) Hydrogen chloride (HCl) :

H

|

Cl--C--

|

H

b) Sulfur dioxide (SO₂) :

O

//

O=S

\\

O

c) Ammonia (NH₃) :

H

|

H--N--H

|

H

d) Carbon monoxide (CO) :

O

//

C=O

Answer:

C

Explanation:

it means there is a change in the velocity plz mark brainliest

If an asteroid had an orbit with a semimajor axis of 4 au, it would take approximately 8.0 years for it to orbit once around the sun.

According to Kepler's third law of planetary motion, the square of the orbital period of a planet or asteroid is proportional to the cube of its semimajor axis. Mathematically, it can be expressed as T^2 ∝ a^3, where T is the orbital period and a is the semimajor axis of the orbit.

To find the period of an asteroid with a semimajor axis of 4 AU, we can use the formula T^2 = (4 AU)^3, which gives us T^2 = 64 years^2. Taking the square root of both sides gives us T = 8 years, which is the approximate time it would take for the asteroid to complete one orbit around the sun.

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