Ignoring air resistance, if a 20 kg ball and a 400 kg crate were both dropped from the
top of a building, the acceleration of the crate would be
the acceleration
of the ball.

Answer:

B for BIG

Explanation:

carbs and fats is energy, if not being use or burned off, it'll be becomes body fat.

Answer:

When you take the compass away from the bar magnet, it again points north. So, we can conclude that the north end of a compass is attracted to the south end of a magnet. ... In Experiment 2, when you move the north pole of a magnet toward the south pole of the other magnet, the two magnets attract.

Answer:

It took \(\bf 4.07 \space\ \mathrm{s}\) to travel.

Explanation:

To calculate the time taken to travel a distance of 122 m at a speed of 30 m/s, we can use the formula for speed:

\(\boxed{speed = \frac{distance}{time}}\).

We can substitute the known values, and then solve for time:

\(30 = \frac{122}{\mathrm {time}}\)

⇒ \(\mathrm{time } = \frac{122}{30}\)

⇒ \(\mathrm{time } \approx \bf 4.07 \space\ \mathrm{s}\)

With the use of second equation of motion formula, its position at time 3.7 s is 16.43 meters

A position is a point where an object can be located. The length between two positions is known as distance.

Given that a ball starts from rest at the initial position xi = 0. The ball has a constant acceleration of 2.4m/s², to know its position time 3.7 s, we will use the formula

X2 - X1 = ut + 1/2 × a × t²

Where

Substitute all the parameters into the formula

X2 - 0 = 0 + 1/2 × 2.4 × 3.7²

X2 = 1.2 × 13.69

X2 = 16.43 m

Therefore, its position at time 3.7 s is 16.43 meters

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Every photon has some energy within it and that energy is called photon energy.

The energy of photon is \(2.38\times10^{-18}\;\rm J\).

Given that, frequency of the photon is \(3.6\times10^{15}\;\rm Hz\) and Planck's constant is \(6.626\times {{10}^{-34}}\).

So the energy of the photon can be calculated by the given formula.

\(E=h\nu\)

Where \(h\) is plank's constant and \(\nu\) is the frequency of the photon.

By substituting the values in the above formula, the photon energy is,

\(E=6.626\times10^{-34}\times3.6\times10^{15}\;\rm J\)

\(E=2.38\times10^{-18}\;\rm J\)

The energy of photon is \(2.38\times10^{-18}\;\rm J\).

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When the velocity of Earth is doubled, the orbit of Earth around the Sun becomes smaller ( A ).

v = √ G M / r

v = Orbital velocity

G = Gravitational constant

M = Mass of the celestial body

r = Radius of the celestial body

Rearranging for r,

√ r = √ ( G M ) / v

Squaring on both sides,

r = G M / v²

If the velocity of Earth is doubled,

v' = 2v

r' = G M / v'²

r' = G M / ( 2 v )²

r' = G M / 4 v²

r' = r / 4

So the radius of orbit of Earth becomes one-fourth its initial radius.

Therefore, when the velocity of Earth is doubled, the orbit of Earth around the Sun becomes smaller ( A ).

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After a period, they start to collide with other galaxies, which causes them to become irregular galaxies. They eventually transform into ancient elliptical galaxies after exhausting all of their dust and gas to form new stars.

It is possible to think of irregular galaxies as star formation research labs. In contrast to the more well-known spiral galaxies, this kind of galaxy produces stars from an interstellar medium that has undergone less chemical evolution.

Typically, irregular galaxies are tiny, with a mass of only a tenth that of the Milky Way galaxy. They are vulnerable to environmental influences like colliding with massive galaxies and cosmic clouds because of their modest sizes.

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The velocity of the horse is 20 meters/second.

To find the velocity of the horse, we can use the formula:

velocity = distance / time

In this case, the distance is 1900 meters and the time is 95 seconds. Plugging in these values into the formula, we get:

velocity = 1900 meters / 95 seconds

Simplifying, we find that the velocity of the horse is:

velocity = 20 meters/second

Speed is the speed and the bearing of movement of an item. Speed is a basic idea in kinematics, the part of traditional mechanics that depicts the movement of bodies. Velocity. As a shift in course happens while the dashing vehicles turn on the bended track, their speed isn't steady.

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The best definition for the notion of "the P-value of a hypothesis test" is "The probability of obtaining a test statistic at least as extreme as the one you calculated, assuming the null hypothesis is true."

The P-value is a measure of the evidence against the null hypothesis. A low P-value (typically less than 0.05) suggests that the observed data is unlikely to have occurred by chance if the null hypothesis is true, and provides strong evidence against the null hypothesis.

On the other hand, a high P-value (greater than 0.05) indicates weak evidence against the null hypothesis, and supports the conclusion that the null hypothesis is not significantly different from the alternative hypothesis.

"

Complete question is

Which one of the following best defines the notion of "the P-value of a hypothesis test?"

The probability of a type I error.

The probability of a type II error.

The probability of rejecting LaTeX: H_0 H 0 , whether it's true or not.

The probability of obtaining a test statistic at least as extreme as the one you calculated, assuming the null hypothesis is true.

"

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Answer:

the cause of variation gravity

Answer:

Heavier Objects Don't Hit the Ground First

Answer:

Please find attached the plot of distance against time created with Microsoft Excel

Explanation:

The table of the information about the train journey is presented here as follows;

\(\begin{array}{ccc}Station&Distance \ travelled/\,km&Time \taken \, / \, minutes \\Ayton&0&0\\Beeston&20&30\\Seatown&28&45\\Deeville&36&60\\Eton&44&70\end{array}\)

From the table data, the distance against time plot can be created by entering the data into a spreadsheet such as Microsoft Excel, then selecting a Chart option in the Ribbon under the Insert Menu after selecting the data

Answer:

8/15=0.53..., since the 3 is repeating, just stop at the 4th decimal place, thus

0.5333

Explanation:

The net work done on the coffee mug is 0.00618 J.

The given parameters;

The net work done on the mug is calculated as follows;

\(W = (F- F_f)d\\\\W = (F \ - \mu F_n)d\\\\W = (F - \mu mg)d\\\\W = (0.1 \ - \ 0.05 \times 0.12 \times 9.8)\times 0.15\\\\W = 0.00618 \ J\)

Thus, the net work done on the coffee mug is 0.00618 J.

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The temperature of sweat when it is first produced is two degree more than normal temperature of the body because sweat removes extra heat from the body.

Our body begins to sweat when our body temperature goes up more than two degrees from normal which is 102 degree F. When you sweat, your body temperature drops back to the safe range which is 96.6 to 100.6 degrees F.

So we can conclude that The temperature of sweat when it is first produced is two degree more than normal temperature of the body because sweat removes extra heat from the body.

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Answer:

So correct sentence is:

So correct sentence is:

So correct sentence is:

So correct sentence is:

Answer:

It's a pretty simple suvat linear projectile motion question, using the following equation and plugging in your values it's a pretty trivial calculation.

V^2=U^2+2*a*x

V=0 (as it is at max height)

U=30ms^-1 (initial speed)

a=-g /-9.8ms^-2 (as it is moving against gravity)

x is the variable you want to calculate (height)

0=30^2+2*(-9.8)*x

x=-30^2/2*-9.8

x=45.92m

Answer:

35

Explanation:

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Answer:

وؤتي يتنييوتينستصميوخصز ءتث. ثنصطث

Answer:

The period (T) of a satellite in a circular orbit can be determined using the formula:

T = 2πr/v

where r is the radius of the orbit and v is the speed of the satellite.

We can rearrange this formula to solve for v:

v = 2πr/T

Substituting the given values, we get:

v = 2π(3.5 × 10^7 m)/(6.3 h × 3600 s/h) ≈ 5,099 m/s

The centripetal force (F) that keeps the satellite in orbit is given by:

F = mv^2/r

where m is the mass of the satellite.

The gravitational force (Fg) between the satellite and Roton is given by:

Fg = GmM/R^2

where G is the gravitational constant, M is the mass of Roton, and R is the radius of Roton.

Since the satellite is in a circular orbit, the centripetal force is equal to the gravitational force:

mv^2/r = GmM/R^2

Simplifying and solving for M, we get:

M = v^2r/GR^2

Substituting the given values, we get:

M = (5,099 m/s)^2 × 3.5 × 10^7 m/(6.674 × 10^-11 m^3/kg s^2) × (1.75 × 10^7 m)^2 ≈ 8.35 × 10^23 kg

The free-fall acceleration (g) on the surface of Roton is given by:

g = GM/R^2

Substituting the calculated value of M and the given value of R, we get:

g = (6.674 × 10^-11 m^3/kg s^2) × (8.35 × 10^23 kg)/(1.75 × 10^7 m)^2 ≈ 8.73 m/s^2

Therefore, the magnitude of the free-fall acceleration on the surface of Roton is approximately 8.73 m/s^2

The common velocity of both object having masses 5kg and 5kg respectively is 1.5 m/s.

Velocity is the rate of change of displacement.

To calculate the common velocity, we use the formula below.

Formula:

From the question,

Given:

Make V the subject of the equation 1

From the question,

Given:

Substitute thes values into equation 2

Hence, the common velocity of the objects is 1.5 m/s.

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The spring constant of the spring is 7.497 N/m.

The given parameters;

mass of the block, m = 0.482 kg

extension of the spring, x = 0.630 m

additional extension, = 0.338 m

The spring constant of the spring is calculated as follow

F = mg

Kx = mg

K = mg/x

K = 0.482 × 9.8 / 0.630 = 7.497N/m

F = -kx.

The spring constant, or k, is the proportional constant. It is a gauge of the spring's rigidity. A spring exerts a force F = -kx in the direction of its equilibrium position when it is stretched or compressed to a length that deviates by an amount x from its equilibrium length. The spring constant is calculated by dividing the force required to extend or compress a spring by the length it goes up or down. It is used to assess the stability or instability of a spring, The spring's stiffness is quantified by the spring constant, or k. For various springs and materials, it differs. The stiffer the spring is and the harder it is to stretch, the greater the spring constant.

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Both objects will have the same temperature,  larger than T but smaller than 2T.

A system in equilibrium if there is no change in temperature after long time.

Assuming the system of two objects with the temperatures 3T and 2T.

When we put them together, heat transfer from the hotter object to the colder one takes place, until both of them have the same temperature

Also, the object with temperature 3T loses temperature, while the object with temperature 2T increases its temperature,

2T < T < 3T

Thus, both objects will have the same temperature, which is larger than 2T but smaller than 3T.

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Answer:

The intensity of the electric field is

\(|E|=10654.37 \:N/C\)

Explanation:

The electric field equation is given by:

\(|E|=k\frac{q}{d^{2}}\)

Where:

As we need to find the electric field at the location of the balloon, we just need the charge equal to 1.99*10⁻⁷ C.

Then, let's use the equation written above.

\(|E|=(9*10^{9})\frac{1.99*10^{-7}}{0.41^{2}}\)

\(|E|=10654.37 \:N/C\)

I hope it helps you!

Answer:

10650

Explanation:

just round that answer to four significant figures and you get that answer

The tangential speed which ,the bob  must have so that it moves in a horizontal circle with the string always making an angle θ from the vertical is v = Sin θ ( \(\sqrt[]{Lg/Cos}\) θ)

The linear component of any object's speed that moves in a circle is its tangential speed. At the point when an item moves in a roundabout way a good ways off r from the middle, then the body's speed is coordinated digressively at any moment.

From free body diagram of the bob, tension in x and y is calculated using,

T Cos(θ) = mg

T Sin(θ) =  mv²  / r

Solving the given equation to find tangential speed we get ,

T Cos(θ) /TSin (θ) = mv² / r(mg)

Tan(θ) = v²/ rg

v = (\(\sqrt[]{rgtan}\)θ)

r = L Sin θ

v = Sin θ ( \(\sqrt[]{Lg/Cos}\) θ)

The above equation is the tangential speed, v , that the bob must have so that it moves in a horizontal circle with the string always making an angle θ from the vertical axis.

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Answer:

10 grams

Explanation:

I took a test with this question earlier.

The tertiary consumers obtain 36 joules of energy if the primary customers use 3600 joules.

Energy, radiant energy, energy source, nuclear energy, electric power, motion energy, energy, elastic energy, and gravitational energy are among the several types of energy.

Modern medical technology, transportation, communications, computers, and numerous other items are all driven by energy. Particularly urgent is the need for affordable, reliable energy in rising economies. It might even save a person's life.

Consequently, if the main consumers use 3600 joule of energy,

the tertiary customers get

                      =3600×10%×10% joules

                      = 36 joules.

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Answer:

14,400m

Explanation:

The formula for calculating speed is S=D/T.

S=speed( in meters per second- m/s)

D=distance(in meters)

T=time( in seconds)

For our case:

S=40m/s

D=?

Time=2 hours=60min x 60 sec=3600seconds

Now make D the subject.

D=S x T

D=4m/s x 3600s=14,400m

Therefore our answer is

14 400 m or 14.4 km

The ability to see the world in three dimensions is called depth perception. It is the visual ability to perceive the relative distance of objects in space and to see them in three dimensions.

Depth perception is an important aspect of vision that allows us to accurately judge distances, perceive spatial relationships, and interact with our environment.

It is the result of the brain processing information from both eyes to create a single, three-dimensional image.

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The work done by the gas during this process is 19.5 J.

Initial volume of the ideal gas, V₁ = 5.34 L

Final volume of the ideal gas, V₂ = 8 L

Initial pressure of the ideal gas, P₁ = 9 kPa

Final pressure of the ideal gas, P₂ = 6 kPa

a) The expression for work done during the isothermal process is given by,

W = P₁V₁ ln(V₂/V₁)

W = (9 x 10³) x (5.34 x 10⁻³) x ln(8/5.34)

W = 48.06 x ln(1.5)

W = 19.5 J

b) According to the first law of thermodynamics,

The heat added to the gas,

Q = ΔU + W

Since, it is an isothermal process, the change in internal energy is zero.

Therefore, Q = W = 19.5 J.

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