an astronaut, whose mission is to go where no one has gone before, lands on a spherical planet in a distant galaxy. as she stands on the surface of the planet, she releases a small rock from rest and finds that it takes the rock 0.460 s to fall 1.90 m .

Answer:

D. Shearing​

Explanation:

D. Shearing​

The Answer is: Shearing

The final form that a star takes when it dies depends on its mass. For a star with a mass similar to that of the Sun, it will eventually exhaust the nuclear fuel in its core and evolve into a red giant star, expanding to hundreds of times its original size. After the red giant phase, the outer layers of the star will be expelled into space in a process called a planetary nebula, leaving behind a hot, dense core called a white dwarf.

For more massive stars, the final stages of their evolution can include supernova explosions, leaving behind a neutron star or a black hole. The exact details of a star's evolution and final form depend on its mass and other properties, such as its metallicity and rotation rate.

In summary, a star that is 10 billion years old may eventually become a red giant and then a white dwarf, but the exact fate of the star depends on its mass and other properties.

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The change in internal energy of the system is 621.4 J.  

Internal energy of the system, we need to use the first law of thermodynamics, which states that the net work done on a system is equal to the heat added to the system minus the heat removed from the system.

First, we need to calculate the heat added to the system and the heat removed from the system. The change in internal energy is given by the following equation:

ΔU = Q + W

The heat added to the system is given by:

Q = m * ΔT

Since the system releases thermal energy to its surroundings, the change in temperature is equal to the temperature difference between the system and its surroundings:

ΔT =\(T_s - T_{su}\)

The work done on the system is given by:

W = P * ΔV

We know that the system has 52 cal of work done on it, so we can use the pressure and volume of the system to calculate the work done:

\(P_s = P_1 + P_2\)

We also know that the volume of the gas at the start and end of the process is 1.0 L and 1.2 L, respectively.

The change in internal energy of the system is given by:

ΔU = Q - W

ΔU = 839 J - 52 cal

(since 1 cal = 4.184 J)  

So, 52 cal = 52 * 4.184

=  217.568 J

ΔU = 839 J - 217.568 J

ΔU= 621.432 J or

ΔU= 621.4 J

Therefore, the change in internal energy of the system is 621.4 J.  

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Answer:

A) 3.39 seconds

Explanation:

We can find the time it takes the arrow to hit the ground by using a constant acceleration equation.

Let's make the positive direction upwards and the negative direction downwards. Let's list out the relevant variables:

Find a constant acceleration equation that contains these four variables.

Substitute known values into the formula and solve for t.

Use the quadratic formula to continue solving for t.

From this, when we add the discriminant we get -12.04664168. When we subtract the discriminant we get 3.38819129.  

Since time cannot be negative, the time it takes for the arrow to hit the ground must be 3.39 seconds.

Answer:V^2=U^2+2gSIN45S

60^2=2asin45x200

3600=400sin45(a)

3600=282•84a

a=3600/282•84

a=12m/s^2

S=ut+0•5gt^2

200=0•5(12)t^2

200=6t^2

t^2=200/6

t^2=33.33

t=5.77s

Explanation:

Answer:

50 swings = 2 mins 40 secs

=> 50 swings = 160 secs

=> 1 swing = 160 / 50 secs

=> 1 swing -= 3.2 secs

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The time period to complete 1 swing is 3.2 seconds

The calculation can be done as follows;

50 complete swings are completed in 2 minutes 40 seconds

2 minutes 40 seconds to seconds is

= 2mins to seconds is 120 seconds

= 120 seconds + 40 seconds

= 160 seconds

50 complete swings= 160 seconds

1 complete swing= 160/50

1 complete swing= 3.2

Hence the time period for 1 complete swing is 3.2 seconds

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Answer:

True

Explanation:

Answer and Explanation:

True I believe bc if you put a certain amount of force on an object it'll move and depending on where you place the force on the object it'll move in that direction. How much force and how much weight the object has will determine the speed...

Answer:

Explanation:

a)

By Hooke's law

F=kx

⇒kd

=83.8×0.0546

=4.575N

By Hooke's law, F=kx ⇒kd =83.8×0.0546 =4.575N.

The first traditional example of an explanation of elasticity is Hooke's law. Elasticity is the quality of a substance or item that allows it to return to its original shape after distortion.

It is possible to refer to a "restoring force" as the capacity to restore normal shape after distortion. This restoring force, when viewed in the context of Hooke's Law, is often proportional to the degree of "stretch" encountered.

These experiments can range from blowing up a balloon and pulling on a rubber band to calculating the amount of wind pressure required to bend and wobble a tall building.

Therefore, By Hooke's law, F=kx ⇒kd =83.8×0.0546 =4.575N.

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From the information the saturation mixing ratio (ws) is approximately 0.000161 g \(kg^-1\)

To calculate the saturation mixing ratio (ws), we need to use the given information of specific humidity (w) and relative humidity (RH). The saturation mixing ratio represents the maximum amount of water vapor the air can hold at a given temperature.

The formula to calculate ws from w and RH is as follows:

ws = w ÷ (1 - w) × RH ÷ 100

Given:

w = 8 g \(kg^-1\)

RH = 20%

First, we need to convert w from grams per kilogram to a decimal fraction:

w = 8 ÷ 1000 = 0.008

Now we can substitute the values into the formula:

ws = 0.008 ÷ (1 - 0.008) × 20 ÷ 100

Calculating this expression:

ws = 0.008 ÷ 0.992 × 0.20

ws ≈ 0.000161 g \(kg^-1\)

Therefore, the saturation mixing ratio (ws) is approximately 0.000161 g \(kg^-1\).

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While rounding a curve, inertia experiences a tug toward the outside.

At this level, calling a force a pushing or a pulling is entirely appropriate. A force isn't something an object "has in it" or that it "contains." One thing experiences a force from another. There are both living things and non-living objects in the concept of a force.

A live thing's physical strength or power: He exerted all of his physical strength to open the window. To apply force on someone or something, such as to open a window, is to exert strength or authority over it. Force can also refer to physical coercion or violence.

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All things we touch are made of matter

particles are small compund that make up matter

the particle theory states that small particels are moving constantly

they move faster based on which state of matter they are in

Explanation:

All things we touch are made of matter

particles are small compund that make up matter

the particle theory states that small particels are moving constantly

they move faster based on which state of matter they are in

Weston is practical in a particle, because particle A has less mass than particle B, particle A will accelerate more rapidly.

Friction is the barrier to motion of one thing moving relative to another. According to the International Journal of Parallel, Emergent and Distributed Systems, it is not regarded as a basic force like electromagnetic or gravity (opens in new tab). The laws governing friction were first put together by scientists in the 1400s, according to the book Soil Mechanics(opens in new tab).

However, because the interactions are so intricate, it usually takes tests to characterize the force of friction under various conditions and cannot be determined only from equations or laws. Every general frictional rule has a number of exceptions.

Weston is therefore applicable to An Particle A.

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After seven half-lives, a significant percentage (approximately 99.22%) of a radioactive species would be found as daughter material, while only a small fraction (approximately 0.78%) of the parent material would remain.

The missing item to complete the beta decay reaction would be the radioactive parent nucleus. Without knowing the specific parent nucleus involved, it is challenging to provide the complete reaction equation. In beta decay, a radioactive parent nucleus undergoes the transformation where a beta particle (electron) is emitted, resulting in the formation of a daughter nucleus.

Now let's discuss the percentage of a radioactive species that would be found as daughter material after seven half-lives. The half-life of a radioactive substance is the time it takes for half of the initial amount of the substance to decay. Each half-life represents a 50% reduction in the amount of the parent material remaining.

After one half-life, 50% of the parent material will have decayed, leaving 50% as the daughter material. After two half-lives, another 50% of the remaining parent material will decay, resulting in 25% of the original parent material and 75% as the daughter material. This pattern continues for each subsequent half-life.

Therefore, after seven half-lives, the remaining parent material will be reduced to (1/2)^7 = 1/128 ≈ 0.78% of the original amount. Consequently, approximately 99.22% of the radioactive species would have decayed into the daughter material after seven half-lives.

It is important to note that the specific percentage of daughter material after seven half-lives will depend on the particular radioactive species and its decay characteristics. Different radioactive substances have different half-lives, so the percentage of daughter material after seven half-lives will vary between different radioactive species.

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Most helpful Answer~

There are no options~

Anyway If the ball is of bad quality it will get deflated/ or strike out.

' The must reasonable thing that could happen is that the ball will bounce'

*Smile* :)  

Bubba's final displacement is approximately 43.77 miles at an angle of 63.9 degrees east of due south from his starting point.

Let's represent the different legs of Bubba's journey as vectors using their magnitude and direction.

First leg

Magnitude: 34 miles

Direction: 110 degrees (20 degrees west of due south)

Vector representation: 34(cos110i - sin110j)

Second leg

Magnitude: 21 miles

Direction: 255 degrees (15 degrees south of due west)

Vector representation: 21(cos255i - sin255j)

Third leg

Magnitude: 12 miles

Direction: 164 degrees (26 degrees east of due south)

Vector representation: 12(cos164i - sin164j)

Fourth leg

Magnitude: 22 miles

Direction: 80 degrees (10 degrees east of due north)

Vector representation: 22(cos80i + sin80j)

To find the final displacement, we need to add these vectors together:

D = 34(cos110i - sin110j) + 21(cos255i - sin255j) + 12(cos164i - sin164j) + 22(cos80i + sin80j)

We can simplify this expression by using the trigonometric identities:

cos(-x) = cos(x) and sin(-x) = -sin(x)

D = 34(cos110i + sin110j) + 21(cos105i + sin75j) + 12(cos164i - sin16j) + 22(cos80i + sin80j)

D = (34cos110 + 21cos105 + 12cos164 + 22cos80)i + (34sin110 + 21sin75 - 12sin16 + 22sin80)j

Using a calculator, we can evaluate the trigonometric functions to find:

D = 20.34i + 38.92j

The magnitude of this vector is given by:

|D| = √((20.34)² + (38.92)²) = 43.77 miles

The direction of this vector with respect to due north can be found using:

theta = atan2(Dy, Dx)

where Dx and Dy are the x and y components of the vector D.

θ = atan2(38.92, 20.34) = 63.9 degrees west of due north

Therefore, Bubba's final displacement from his starting point is 43.77 miles in a direction 63.9 degrees west of due north.

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Answer: They are inversely proportional

Explanation:

wiens displacement law assets that for the black body radiation the curve for distinct temperature will peak at distinct wavelength are varying inversely proportional to the temperature

The relationship between temperature and peak wavelength they are inversely proportional.

Wien's displacement law asserts that for the black-body radiation the curve for distinct temperatures will peak at distinct wavelengths are varying inversely proportional to the temperatures.

Wien's Law given as

\(\lambda_{\max }=\frac{0.29}{T}\)

Where

T=Temperature (In Kelvin unit)

λ(max)= Peak wavelength (In cm unit)

Therefore we can say that wavelength and temperature are inversely proportional.

This formula reads: (max) = peak wavelength (cm) Temperature is T. (K) What is the link between temperature and peak wavelength? Please explain using the simulation results and the proportionality relationships you have learnt about this month. They are proportionate in a direct way.

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Answer:

A

Explanation:

Answer:

588 J

Explanation:

P.E = mgh

      = 6 * 9.8 * 10

     = 588 J

if g value is rounded and taken as 10 then answer is 600 J.

a. Electric field is a region around an electrically charges body in vicinity of which other charges bodies experiences a force. The force is either attractive or repulsive in nature,

b. The distortion of the candle flame tells that the flame contains charged particles.

c. The charge on the particle of flame is negative as well as positive.

d. The size of the field is very big.

a. Charges particle when at rest, produces a physical field around them. When the other charges comes in contact with this field, they feels a force being applied on them. This field around the stationary electric charge is called Electric Field.

b. The charges on the plates are positive and negative on right and left respectively. When the field is applied, the candle flame gets distorted unsymmetrically. The negative particle attracted by the positive plate and vice-versa. Distortion of the flames tells that the flame has charges on it.

c. The unsymmetrical nature of distortion of the flame tells that the it contains both the charges i.e. positive as well as negative.

d. The size of the field can be told by using the magnitude of the field. The flame gets distorted only if the field is very high. Greater the magnitude of field, greater the size of the electric field.

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As a result, the magnetic stripes on either side of the mid-ocean ridges develop in a symmetrical pattern with opposite polarity.

Along the Oceanic Ridge, the stripes are symmetrical. A mirror image is made by them. It implies that new seafloor is created in the center (at the Ridge), and some of the new seafloor is transported to each of the Ridge's sides, generating a symmetric pattern.

Pictures for Each side of a mid-oceanic ridge has a different magnetic striping pattern, although they are identical.

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Matt's speed is 10 meters per second. Matt's speed can be calculated by dividing the distance he traveled by the time it took him to travel that distance.

In this case, Matt traveled 250 meters in 25 seconds, so his speed is:

Speed = distance / time
Speed = 250 meters / 25 seconds
Speed = 10 meters per second

Therefore, Matt's speed is 10 meters per second.

In HTML format:

Matt's speed can be calculated by dividing the distance he traveled by the time it took him to travel that distance. In this case, Matt traveled 250 meters in 25 seconds, so his speed is:

Speed = distance / time

Speed = 250 meters / 25 seconds

Speed = 10 meters per second

Therefore, Matt's speed is 10 meters per second.

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Answer:

The weight and the mass of an object are related because the weight of an object is a measure of the force exerted on the object by gravity, or the force needed to support it. w=mg

The Cepheid distance method, which involves measuring the period of a type of star called a Cepheid variable and relating this to its luminosity, is only accurate up to a certain point. The method generally fails when attempting to measure distances beyond about 20 Million Parsecs (Mpc).

This is because at greater distances, the light from the Cepheid star dims greatly and becomes too faint to detect with the available technology. Furthermore, the accuracy of the available technology begins to fall off, making it difficult to accurately measure the period or intensity of the Cepheid star, ultimately leading to inaccurate distance measurements.

This limitation has severely hindered our ability to measure distance accurately beyond our local region of the universe, leaving the rest of our universe shrouded in mystery.

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Saturation pulses, when using MRA to evaluate peripheral vascular flow in the arteries of the legs, are "placed inferior to the acquired slices" to help reduce the signal from the venous blood flow in the imaging area. Thus, C holds true.

Saturation pulses are radiofrequency pulses that are used to suppress or eliminate signals from unwanted tissues, such as venous blood flow, that may interfere with the visualization of the arterial flow. In MRA of the peripheral arteries of the legs, saturation pulses are typically placed inferior to the acquired slices to help reduce the signal from the venous blood flow in the imaging area.

This helps to improve the image quality and accuracy of the evaluation of the arterial flow.

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MCB is more sensitive to current than the fuse. It detects any abnormality in the current flow and automatically switches off the electrical circuit. In the case of MCB, the fault zone of the electrical circuit can be easily identified. ... But in case of the fuse, the entire fuse wire needs to be replaced.

Answer:

because it is an ice that is why it melt

Answer:

B

Explanation:

Y won't sink because his shoes have wider area

Answer:

the number of protons.

Explanation:

the atomic number is the number of protons in the nucleus of an atom. the number of protons Define the identity of an element.

Answer:

n = 3.1x10¹²

Explanation:

To find the number of electrons we need to find first the charge (q):

\( I = \frac{q}{\Delta t} \rightarrow q = I*\Delta t \)    (1)

Where:

I: is the electric current = 0.59 A

t: is the time

The time t is equal to:

\(v = \frac{\Delta x}{\Delta t} \rightarrow \Delta t = \frac{\Delta x}{v}\)   (2)

Where:

x: is the displacement

v: is the average speed = 2.998x10⁸ m/s

The displacement is equal to the perimeter of the circumference:

\( \Delta x = 2\pi*r = \pi*d \)     (3)

Where d is the diameter = 80.0 m

By entering equations (2) and (3) into (1) we have:

\(q = I*\Delta t = I*\frac{\Delta x}{v} = \frac{I\pi d}{v} = \frac{0.59 A*\pi*80.0 m}{2.99 \cdot 10^{8} m/s} = 4.96 \cdot 10^{-7} C\)      

Now, the number of electrons (n) is given by:

\( n = \frac{q}{e} \)

Where e is the electron's charge = 1.6x10⁻¹⁹ C  

\( n = \frac{q}{e} = \frac{4.96 \cdot 10^{-7} C}{1.6 \cdot 10^{-19} C} = 3.1 \cdot 10^{12} \)

Therefore, the number of electrons in the beam is 3.1x10¹².

I hope it helps you!