Calculate the pressure water exerts on a fish tank'. The water presses down on the bottom with a force of 2000 N, and the area of the bottom of the tank is 0.4m?.

The amount of work that the force do on the block during the displacement is 4950 Joules.

The work done by a body is given by

W = F.S

Where,

W is the work done,

F is the force applied,

S is the displacement.

Work done is a scalar quantity that is found by the dot product of the force and the displacement of the body.

The force applied by the rushing water is given to be exerted is (210N)i-(150N)j

The displacement is given to be (15m)I - (12m)j.

Now, putting all the values,

W = (210i-150j)(15i-12j)

W = 4950 Joules.

So, the work done by the force to move the ice block is 4950 Joules.

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Complete question - A floating ice block is pushed through a displacement vector d= (15 m)i - (12 m)j along a straight embankment by rushing water, which exerts a force vector F = (210 N)i - (150 N)j on the block. How much work does the force do on the block during the displacement?

With the spectroscopic method, finding Earth-sized planets is harder than finding giant planets because (B) "It's a matter of size. A smaller planet's periodic presence is harder to disentangle from a star's stellar surface activity than a larger planet."

A smaller planet, such as an Earth-sized planet, may be too difficult to detect because its periodic presence is indistinguishable from the activity of the star's surface. On the other hand, it is relatively easier to detect larger planets, such as giant planets, because their periodic presence is easier to distinguish from the activity of the star's surface.

Therefore, the correct option is B. It's a matter of size. A smaller planet's periodic presence is harder to disentangle from a star's stellar surface activity than a larger planet.

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Answer:

Yes, they do. When two different materials are rubbed together, there is a transfer of electrons from one material to the other material. This causes one object to become positively charged and the other object to become negatively charged.

Explanation:

hope this helps

Answer:

0.006kg

Explanation:

bdjdndjoskdn dhend

Answer:

30 degrees...goodluck

a) The isocost curve equation is G = (20000 - 100C)/500. b) The isocost curve equation is G = (30000 - 100c)/500. c) The isocost curve equation is G = (20000 - 100C)/375. d)  The isocost curve equation is G = (20000 - 120C)/500.

To draw the isocost curve showing the different combinations of gas and coal, we need to use the cost per unit values for coal and gas, as well as the given expenditure (TC) and the changes in expenditure or prices.

Let's denote the quantity of coal as C and the quantity of gas as G. The cost per unit of coal is 100, and the cost per unit of gas is 500.

(a) Initial expenditure (TC) of 20000:

To find the combinations of gas and coal that can be purchased with an initial expenditure of 20000, we can use the following isocost equation

TC = 100C + 500G

We can rearrange the equation to solve for G in terms of C

G = (TC - 100C) / 500

Now we can plot the isocost curve with TC = 20000 using the equation above.

(b) Expenditure (TC) increases by 50%

If the expenditure increases by 50%, the new expenditure (TC_new) becomes 1.5 × TC = 1.5 × 20000 = 30000.

We can use the same isocost equation as before, but with the new expenditure value:

TC_new = 100C + 500G

Rearranging the equation to solve for G

G = (TC_new - 100C) / 500

Now we can plot the isocost curve with TC_new = 30000.

(c) Gas price reduced by 25%:

If the gas price is reduced by 25%, the new cost per unit of gas (Gas_new) becomes 0.75 × 500 = 375.

We can use the original isocost equation, but with the new cost per unit value:

TC = 100C + 375G

Rearranging the equation to solve for G

G = (TC - 100C) / 375

Now we can plot the isocost curve with the reduced gas price.

(d) Coal price rises by 20%

If the coal price rises by 20%, the new cost per unit of coal (Coal_new) becomes 1.2 × 100 = 120.

We can use the original isocost equation, but with the new cost per unit value:

TC = 120C + 500G

Rearranging the equation to solve for G:

G = (TC - 120C) / 500

Now we can plot the isocost curve with the increased coal price.

By plotting these isocost curves on a graph with G on the y-axis and C on the x-axis, we can visualize the different combinations of gas and coal that can be purchased at the given expenditures or price changes.

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GME, also known as granulomatous meningoencephalitis, is a serious inflammatory condition that affects the brain (CNS). Dogs are the most commonly infected, while cats might occasionally be impacted as well.

No matter the form, GME cannot be cured and requires lifelong medication. The ocular type typically manifests as abrupt, typically permanent blindness.

It is not life-threatening, but it can impair one or both eyes. Seizures, neck discomfort, stumbling, staggering, blindness, listlessness, tilted heads, anomalies of the face, trembling, wobbling, and weakness is all possible signs.

Without a biopsy of the afflicted brain tissue, this illness cannot be diagnosed with certainty!

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The correct answer is option A.

The Gamma waves emitted from radioactive decay have a frequency of around 10¹⁹ Hz, which is much greater compared to the alpha of beta waves.

The frequency is directly proportional to the energy of the waves as given by the equation,

Where E is the energy, h is the Planck's constant, and f is the frequency.

Thus the gamma waves have a lot of energy compared to the other options.

Thus the correct answer is option A.

Answer:

(1) chess is played by him

(2) The great black engine was seen by her

(3) Arrangements for functions had been made by him

(4) A meeting is being attended by Raman

= when the last of the guests left, I went back into the hall to look for my mobile phone that I had kept on the table, I found that my mobile phone was not there. I felt freaked and I asked to every member of my family about my phone, but nobody had idea about that. then there was a phone call made by my uncle to my father, that his son had taken the mobile by mistake. After sometime, My uncle came to return my mobile. Then I took a sigh of relief .

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Answer:

false

Explanation:

the time period is for a whole cycle of the wave, so peak-to-peak on an oscilloscope trace.

The block gains 15 Joules of kinetic energy, to be precise.

Horizontal force of 5.0 newtons.

The sum of an object's force and its displacement is known as the work done.

Mathematically,

w = f * s

where,

completed work

F stands for force.

Displacement equals s

Kinetic energy is the energy that an item possesses just by virtue of its motion.

In the question, it is stated that a block has been subjected to 15 Joules of work; our task is to determine how much the block's kinetic energy has changed.

Having said that,

Work performed on the item equals a change in its kinetic energy.

This results in a 15 Joule increase in kinetic energy.

The block gains 15 Joules of kinetic energy, to be precise.

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Answer:

im not really sure, sorry

Answer:

False

Explanation:

The centripetal force is the force that points towards the center and is responsible for keeping an object in a curved path. This force is provided by the tension in the string, not the mass of the object.

Hi There, Buddy!

To solve this problem, let us divide the entire motion into 2 phases

1.) When the elevator is moving with an acceleration

2.) When the elevator has a deceleration

For the first half -

u = 0 , a = 0.6 , t = t1

v = 0.6(t1)  ---------- ( 1 )

s = 1/2 x 0.6 x (t1)^2 = 0.3(t1^2) -------- ( 2 )

For the second half -

u = 0.6(t1) , a = -0.8 , v = 0

0.6 x (t1) = 0.8 (t2) ----> 3(t1) = 4(t2) ---------- ( 3 )

0.36(t1)^2 = 1.6 s2 ---------- ( 4 )

Now, we know that the total time taken is 10 seconds

------- t1 + t2 =10 , 3t1 = 4t2 ---- t1 = 40/7 , t2 = 30/7

Now, substitute values of t1 and t2 in s1 and s2 and add both s1 and s2 to get total distance travelled.

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The molecular field for bend distortion is h_bend = -K_bend ∇² n and the molecular field for twist distortion is h_twist = -K_twist ∇² n + K_twist q₀ (∇ × n).

In the case of bend distortion, the director (the preferred orientation of the liquid crystal molecules) deviates from the local normal direction. The bend energy density is given by:

E_bend = (K_bend/2) × (∇ · n)²

where K_bend is the bend elastic constant and ∇ · n represents the divergence of the director field.

To determine the molecular field h associated with the bend distortion, we can take the functional derivative of the bend energy with respect to the director field n:

h_bend = δE_bend/δn

Using the Euler-Lagrange equation, this can be written as:

h_bend = -K_bend ∇² n

So, the molecular field for bend distortion is h_bend = -K_bend ∇² n.

Twist distortion:

In the case of twist distortion, the director rotates in a helical manner. The twist energy density is given by:

E_twist = (K_twist/2) × (∇ × n - q₀)²

where K_twist is the twist elastic constant and q₀ represents the pitch of the helix.

Similarly, to determine the molecular field h associated with the twist distortion, we take the functional derivative of the twist energy with respect to the director field n:

h_twist = δE_twist/δn

Using the Euler-Lagrange equation, this can be written as:

h_twist = -K_twist ∇² n + K_twist q₀ (∇ × n)

So, the molecular field for twist distortion is h_twist = -K_twist ∇² n + K_twist q₀ (∇ × n).

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Answer:

5.0 km/h = 5.0 km/60min

speed = distance/time

distance = speed x time = 5.0km/60min x 19min = 1.6km

Explanation:

Answer:

3.9 x 10^-7 m.

Explanation:

We know that the formula of speed is velocity = frequency x wavelength.
rearranging the equation we get wavelength= velocity/frequency.

If you plug in the value you get wavelength= 3.0 x 10^8 m/s / 7. 7 x 10^14 hz

wavelength= 0.00000038961 m and if you write it in standard form it

is 3.9 x 10^-7 m.

The cost of using 50 W for one day or 24 hours is  dollar 0.12. The cost of using 800 W for 1 hour is 0.08 dollar.

Power is the rate of work done energy of  an object. Given that the cost of using 1 KWhr energy is dollar 0.10.

Then cost of using 50 W  or 0.05 KW in 24 hours is

0.05 × 24 ×  0.10  = 0.12 dollar

Cost of using 800 W or 0.08 KW per hour is 0.08 KWhr × 0.10 = dollar 0.08

Similarly, the cost of using 150 W in one month is find as follows:

150 W = 0.15 KW

energy used  = 0.15 × 30 × 24 hrs

cost = 0.15 × 30 × 24 hrs × 0.10 = dollar 10.8

The energy causing a cost of 2.5 dollar is 2.5/0.10 = 25 KWhr

power = 25 KWHr/24 hrs = 1.04 KW.

The energy causing a cost of 4 dollars is 4/0.10 = 40 KWhr

power =40 KWHr/24 hrs = 1.6 KW.

The energy causing the cost of 3 dollars  = 3/0.10 = 30 KWhr

then time = 30/100 W = 0.3 hr.

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A cart moving at a constant speed of 25 m/s possesses 438 J of kinetic energy, and the mass of the car is 1.6 kg.

The energy an object has as a result of motion is known as kinetic energy. A force must be applied to an object to accelerate it. We must put in the effort to apply force. After the work is finished, energy is transferred to the item, which then moves at a new, constant speed.

Definition: When an object is moving at a constant speed—that is, its speed does not change—we say it is moving at a constant speed. steady rate

Given:

KE = 500 J

v = 25 m/s

The formula for Kinetic Energy is given:

KE = ½ mv²

where: KE - Kinetic Energy

m - mass

v - velocity

Substituting the value of KE and v in the formula,

500 J = (½)(m)(25 m/s)²

m = (500 J)(2)/(25 m/s)²

m = 1.6 kg

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Answer:

A

Explanation:

earthquakes release energy

Answer:

i think it begins at the epicenter

Explanation:

i can remember

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The charge of a newly formed oxygen ion would be -2

Hope this helps :)

Answer:

true

Explanation:

have a great day........

Answer

30 kg . m/sec

Explanation:

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c. Dark matter is attractive and slows the expansion of the universe, while dark energy is repulsive and accelerates the expansion.

An estimated 85% of the universe's mass is assumed to be made up of dark matter, a hypothetical type of stuff. The reason dark matter is referred to be "dark" is because it does not appear to interact with the electromagnetic field. be a result, it cannot be detected because it does not emit, absorb, or reflect electromagnetic radiation. Numerous astrophysical observations support the existence of dark matter, including gravitational effects that cannot be described by the gravity theories currently in use without the presence of more matter than can be observed.

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Answer:

its speed will increase to 8 newtons allowing its position to dramatically change.

The probability density function of X is plotted for a=1/2 and a=2.

The expected value of X (E[X]) is determined.

The expected value of 1/X (E[1/X]) is determined.

The variance of X (V[X]) is determined.

The median of X is determined.

When a=1/2, the probability density function of X is given by p(X=x∣a)=((1/2)+1)x(1/2)^0=(3/2)x for x∈[0,1]. When a=2, the probability density function becomes p(X=x∣a)=(2+1)x^2=3x^2 for x∈[0,1]. To plot the probability density function, we can assign different values of x within the range [0,1], calculate the corresponding probabilities using the given formulas, and plot the points on a graph.

The expected value of X (E[X]) is calculated by integrating the product of X and its probability density function over the range [0,1]. For a=1/2, E[X] = ∫(x * (3/2)x) dx from 0 to 1. For a=2, E[X] = ∫(x * 3x^2) dx from 0 to 1. By evaluating these integrals, we can determine the expected values.

The expected value of 1/X (E[1/X]) is calculated similarly to E[X], but instead of integrating X, we integrate 1/X using the respective probability density functions for different values of a.

The variance of X (V[X]) can be computed by taking the second moment of X (E[X^2]) minus the square of the first moment (E[X]) squared. V[X] = E[X^2] - (E[X])^2. By calculating E[X^2] using the probability density function and the expected values obtained in step 2, we can determine the variances for different values of a.

The median of X is the value of X such that the cumulative distribution function (CDF) is equal to 0.5. To find the median, we integrate the probability density function from 0 to the median value and set it equal to 0.5. Solving for the median provides its value in terms of the parameter a.

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Answer:

Stars create new elements in their cores bu squeezing elements together in a process called unclear fusion. First stars fuse hydrogen atoms into heluim. Helium atorm then fuse to create berylluim and so on until fusion in the star’s core has created every element up to icon.

To determine the amount of energy lost due to air resistance, we can use the principle of conservation of mechanical energy. Initially, the Snickers bar has gravitational potential energy, and upon hitting the ground, it has kinetic energy.

The gravitational potential energy (PE) of an object is given by the equation:

PE = m * g * h

Where:

m is the mass of the object (3 kg)

g is the acceleration due to gravity (approximately 9.8 m/s^2)

h is the height of the Washington Monument (170 m)

Calculating the potential energy, we have:

PE = 3 kg * 9.8 m/s^2 * 170 m

PE = 4998 J (joules)

At the moment of impact, all the potential energy is converted into kinetic energy, given by:

KE = 1/2 * m * v^2

Where:

m is the mass of the object (3 kg)

v is the velocity at impact (52 m/s)

Calculating the kinetic energy, we have:

KE = 1/2 * 3 kg * (52 m/s)^2

KE = 4056 J (joules)

The energy lost due to air resistance is the difference between the initial potential energy and the final kinetic energy:

Energy Lost = PE - KE

Energy Lost = 4998 J - 4056 J

Energy Lost = 942 J (joules)

Therefore, the amount of energy lost due to air resistance is 942 joules.

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