In a tide pool, you find a sea star with four regular length arms and one very short arm. What is probably happening

Answer:

4727.71N

Explanation:

Given parameters:

Acceleration due to gravity on Venus  = 8.87m/s²

Mass of the rover = 533kg

Unknown:

Weight of the rover  = ?

Solution:

Weight is the force of gravity acting on a body. It is mathematically expressed as;

 Weight  = m x g

m is the mass

g is the acceleration due gravity

 Insert the parameters and solve;

 Weight  = 533 x 8.87  = 4727.71N

Answer:

yes

Explanation:

Answer:

2000

Explanation:

ddoes rest : add the components

Answer:

Explanation:

there must be a cause—which is a net external force—for there to be any change in velocity, either a change in magnitude or direction.

The goalie slides on the frictionless ice at a speed of 0.076 m/s.

collision energy equals collision momentum

An object's momentum will vary as a result of a force applied for a specific length of time. In other words, an uneven force an object regardless of whether it is speeding up or slowin accelerates g down. When a force exerted against an object's motion slows it down.

The puck weighs 0.111 kg in terms of mass.

Hockey puck velocity is 55 meters per second.

Goalkeeper weight: 80 kg

Goalkeeper's speed is 0 meters per second.

Following the rule of linear momentum conservation, (0.111 kg 55 m/s) + (80 kg 0 m/s) = (0.111 kg + 80 kg) V V = (6.105 / 80.111) = 0.076 m/s (0.111 kg 55 m/s) + (0.111 kg + 80 kg) V = 0.076 m/s

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Answer:

Z = 1879.64 Ω = 1.879 KΩ

Explanation:

First, we will find the capacitive reactance of the capacitor:

\(X_{c} = \frac{1}{2\pi fc}\\\)

where,

Xc = Capacitive Reactance = ?

f = frequency = 50 Hz

C = Capacitance = 2 μF = 2 x 10⁻⁶ F

Therefore,

\(X_{c} = \frac{1}{2\pi(50\ Hz)(2\ x\ 10^{-6} F)}\\X_{c} = 1591.55\ \Omega\)

This is an RC series circuit. In the RC circuit the value of impedance is given by the following formula:

\(Z = \sqrt{R^2 + X_{c}^2}\\Z = \sqrt{(1000\ \Omega)^2 + (1591.55\ \Omega)^2}\\\)

Z = 1879.64 Ω = 1.879 KΩ

Yes, strain will only occur in a member that has a force applied to it.

Strain is a measure of the deformation or elongation experienced by a material when subjected to an external force. When a force is applied to a member, it induces stress within the material, which results in strain. The strain experienced by a member is directly related to the magnitude of the applied force and the material's properties.

In the absence of any external force, a member remains in its original state without undergoing any deformation or strain. It is only when a force is applied that the material experiences stress, causing it to deform and exhibit strain. The magnitude of the strain depends on the material's elasticity, which determines how much it can deform under the influence of the applied force.

The relationship between stress and strain is governed by the material's mechanical properties, such as its Young's modulus and Poisson's ratio. These properties describe how the material responds to external forces and provide insights into its deformation behavior.In summary, strain occurs in a member when a force is applied to it, causing the material to deform and experience changes in its dimensions. Without the presence of an applied force, the member remains in its original state without exhibiting strain.

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Ranking the speeds of mass movements from slowest to fastest: 1. Creep, 2. Slump, 3. Flow, 4. Fall.

When ranking the speeds of mass movements from slowest to fastest, creep is the slowest. Creep refers to the gradual and slow movement of soil or rock particles downhill due to the force of gravity. Slump, the next in line, involves the movement of a coherent mass of soil or rock along a curved surface. Flow, which is faster than both creep and slump, occurs when the material moves as a fluid, typically involving a mixture of soil, water, and air. Fall is the fastest, where the material rapidly descends under the influence of gravity without significant deformation or internal movement.

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The two asteroids from which close-up images and data have been returned by the Galileo spacecraft are Gaspra and Ida.

The Galileo spacecraft was launched by NASA in 1989 to study Jupiter and its moons. During its mission, it also flew by Gaspra in 1991 and Ida in 1993, taking close-up images and gathering data about their composition and structure. Gaspra is an S-type asteroid, while Ida is a C-type asteroid and has a small moon named Dactyl. The data collected from these encounters has helped scientists better understand the formation and evolution of asteroids and the early solar system.

Therefore, the two asteroids from which images have been returned are Gaspra and Ida.

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Answer:

Rubber or plastic covers are bad conductors of electricity. So they do not allow the electric current to pass through it.

Explanation:

Rubber and plastic are bad conductors of electricity, therefore when handling a tool with a rubber handle, the electricity will not pass through it.

Answer:

rubber and plastic are insulators and are bad conductors of electricity

Answer:

the answer is 1, oil and water

Answer:

It is oil and water i took the quiz and got it correct !

Hope this helps you! :D

In the peak of summer, it hasn't rained in a week, and the plants are looking rough, so watering the plants for an hour is a good idea.

However, the next day, you come back to the garden, and the plants look in worse shape than they did previously, as if none of that water made it to the plant. Plants absorb water through their roots. The root system of a plant is responsible for drawing water and nutrients from the soil. A plant's root system must be able to absorb water quickly in order for the plant to grow and thrive. When the soil around the root system is dry, the roots will stop growing and will not be able to absorb water.

It may even start to die. Watering plants during the peak of summer is important because it will help keep the soil moist and prevent the roots from drying out. However, watering a plant too much can be harmful. If a plant is overwatered, the water may not be able to penetrate the soil and reach the roots. Instead, it may just sit on top of the soil, causing the roots to rot and die. This can cause the plant to wilt and die.To summarize, if the soil around the plant is too dry, the roots may not be able to absorb the water you gave them, causing the plant to look worse than before. Conversely, overwatering can also be harmful because the water may not be able to penetrate the soil and reach the roots, causing the roots to rot and die.

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If the liquid in a mercury barometer were replaced with water of density 1000kgm-3, the height of the water column will be 10.3m

A mercury barometer Measures atmospheric pressure by determining the height of a mercury column supported in a sealed glass tube.

Height of mercury column = 76cm

Let the height of the water column  be 'h'

As per the law of fluid dynamics, pressure applied by fluid of height h is equal to hρg

Now, when the fluid in the barometer will be in equilibrium, the height of the fluid column will be equal to the atmospheric pressure.

ρ(Hg) × g × 76 = ρ(Water) x g x h

Substituting the values, we have

13600 x 9.8 x 76 = 1000 x 9.8 x h

\(h = \frac{13600 x 76}{1000}\)

h = 1033 cm or 10.3m

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Given data:

* The current through the system is I = 3 A.

* The resistance of resistors connected in parallel is,

Solution:

The equivalent resistance of the system is,

Substituting the known values,

By taking inverse value,

According to Ohm's law, the voltage across the battery is,

Substituting the known values,

Thus, the voltage across the battery is 11.25 volts.

The acceleration of this particle under the influence of force F is equal to the force divided by the sum of the masses of the two particles.

The acceleration of the combined particle under the influence of force F can be determined using Newton's second law of motion, which states that the force acting on an object is equal to the mass of the object times its acceleration. In mathematical form, this can be expressed as:

F = ma

Where F is the force, m is the mass, and a is the acceleration.

If the two particles are combined into one particle with mass m₁ and m₂, then the acceleration of this particle under the influence of force F can be found by rearranging the equation to solve for acceleration:

a = F / m

Substituting the combined mass of the two particles into the equation gives:

a = F / (m₁ + m₂)

Therefore, the acceleration of the combined particle is F / (m₁ + m₂), where F is the force and m₁ and m₂ are the mass of the two particles.

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The statement indicates how much heat is needed for a mass m of ice to increase its temperature from initial to T.

Ice has a melting point of T = 0 C.

A mathematical statement that depicts the relationship between two or more variables is called an equation. Terms serve as placeholders for values, and operations serve as symbols for the steps that must be followed to solve an equation.

Numerous practical issues can be resolved using equations, such as determining a circle's surface area or forecasting the speed of a falling object.m is the mass of the ice, c is its specific heat capacity, T is the change in temperature, and Lf is the latent heat of fusion of the ice, where

Q is the heat supplied.

To find  ΔT, we can rearrange the equation as follows:

ΔT = (Q - mLf) / m

By entering the specified values, we obtain:

ΔT = (800 × 500 - 0.55 × 3.34 × 103) / (0.55 × 2.01 × 103)

ΔT = 36.5°C

The ice will begin to melt after 36.5 minutes because the beginning temperature was -15°C.

The answer is 36.5 minutes as a result.

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Answer:

There are following two activities which affect heart rate and respiratory rate.

1-Exercise

2-Hiking

Explanation:

when we are exercising or hiking our heart rate and respiratory rate affected. This is because during hiking and exercising our body may need three or four time your normal cardiac output. This is because our body consuming energy during the workout and our muscles needs more oxygen. To meet the need of energy and oxygen respiration rate become fast and heart rate also increase.

17.01 m/s is the car’s velocity .

s=ut+at²/2

s-at²/2=ut

u=s-at²/2÷t

u=312/18.4

u=17.01 m/s

"The rate at which an item changes its location" is described by a vector number called velocity. Imagine someone walking swiftly, one step forward, one step back, and starting each step from the same location. Velocity is a vector quantity. Therefore, velocity is cognizant of direction. The direction must be taken into account when determining an object's velocity. A velocity of 55 miles per hour is not adequate information. It is necessary to account for the direction in order to accurately describe the object's velocity. Simply put, the direction of the velocity vector represents the motion of the object.

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The turtle's position and direction appropriately after each instruction to ensure accurate drawing. You can also customize the colors, sizes, and shapes to enhance the visual appearance of the AND gate.

To draw an AND gate using turtle graphics, you can use the following set of instructions:

Set up the turtle:

a. Set the turtle's initial position.

b. Set the turtle's pen color and size.

Draw the first input line:

a. Move the turtle forward to the starting point of the line.

b. Draw a straight line segment to represent the first input.

Draw the second input line:

a. Move the turtle to the starting point of the second line.

b. Draw a straight line segment to represent the second input.

Draw the output line:

a. Move the turtle to the starting point of the output line.

b. Draw a straight line segment to represent the output.

Draw the logic gate shape:

a. Move the turtle to the starting point of the gate.

b. Draw a rectangle to represent the gate.

c. Add any necessary labels or symbols to indicate it as an AND gate.

Add connections between lines and gate:

a. Move the turtle to the intersection point of the first input line and the gate.

b. Draw a small line segment to connect the input line to the gate.

c. Repeat the above step for the second input line and the gate.

d. Draw a small line segment to connect the output line to the gate.

Repeat the above steps as necessary to draw multiple AND gates or any additional components.

Remember to adjust the turtle's position and direction appropriately after each instruction to ensure accurate drawing. You can also customize the colors, sizes, and shapes to enhance the visual appearance of the AND gate.

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The kinetic energy of a 9fC charge at the outer wall of the cell membrane is approximately \(1 * 10^(-16) J\). The correct option is B.

The kinetic energy of a 9fC charge at the outer wall can be calculated using the following steps:

1. First, find the electric field E between the capacitor plates. Use the formula E = σ/ε₀, where σ is the charge density (10^(-5) C/m²) and ε₀ is the vacuum permittivity \((8.854 * 10^(-12) C²/Nm²).\)
\(E = (10^(-5) C/m²) / (8.854 * 10^(-12) C²/Nm²) ≈ 1.13 * 10^6 N/C\)

2. Next, find the potential difference V between the capacitor plates. Use the formula V = Ed, where d is the distance between the plates (10 nm = 10 x 10^(-9) m).
\(V = (1.13 * 10^6 N/C) * (10 * 10^(-9) m) ≈ 1.13 * 10^(-2) V\)

3. Calculate the work done W to move the 9fC charge from the inner wall to the outer wall using the formula W = qV, where q is the charge \((9fC = 9 * 10^(-15) C).\)
\(W = (9 * 10^(-15) C) * (1.13 * 10^(-2) V) ≈ 1.017 * 10^(-16) J\)

4. Since the charge is released from the inner wall and gains kinetic energy as it moves to the outer wall, the work done W is equal to the kinetic energy K of the charge at the outer wall.
\(K = 1.017 * 10^(-16) J\)

The closest option to this value is \(1 * 10^(-16) J\). So, the kinetic energy of a 9fC charge at the outer wall of the cell membrane is approximately \(1 * 10^(-16) J\).

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The geothermal gradient in the tectonically stable region is approximately 21°C/km, indicating that the temperature increases by an average of 21 degrees Celsius per kilometer of depth.

To calculate the geothermal gradient, we need to find the rate at which the temperature increases with depth.

Temperature at the surface (T₁) = 14°C

Temperature at a depth of 5.0 km (T₂) = 119°C

Temperature difference = T₂ - T₁ = 119°C - 14°C = 105°C

Depth difference = 5.0 km - 0 km = 5.0 km

Geothermal gradient = Temperature difference / Depth difference

Geothermal gradient = 105°C / 5.0 km

Calculating this expression, we find:

Geothermal gradient ≈ 21°C/km

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Answer:

Explanation:

Seatbelts are essential in a car because they serve to hold the vehicle's passengers firmly in their seats during a collision. This reduces the danger of serious injury or death by protecting people from being flung from the vehicle or colliding with hard objects inside the vehicle.

In addition to wearing seatbelts, the following steps can be done to lessen the severity of an accident:

1. Airbags: In modern automobiles, airbags release following a collision to absorb the impact and prevent the occupants from hitting hard objects within the vehicle.

2. Kid safety seats: Children should be properly strapped in a child safety seat that is age and size appropriate.

3. Headrests: Properly positioned headrests can help lessen the risk of whiplash injuries in the event of an accident.

4. Avoiding distractions: One of the primary causes of accidents is distracted driving. Avoiding distractions while driving, such as using a mobile phone, eating, or applying make-up, can assist to lower the chance of an accident.

5. Regular car maintenance, such as regular servicing, tyre pressure checks, and brake checks, may assist to ensure that the vehicle is in excellent condition and lower the danger of an accident.

6. Avoiding aggressive driving: Speeding, tailgating, and making rapid lane changes all raise the chance of an accident.

7. Following traffic rules, such as respecting speed limits, traffic signs, and signals, as well as maintaining a safe distance from other cars, can assist to lessen the likelihood of an accident.

Answer:

The answer is four hundred twenty six or 426

Answer:

426

Explanation:

Answer:

2100 m

2804 g

4 '2 mm squares'

20,000 photos

Explanation:

1.5 km = 1500 m

1500 m + 600 m = 2100 m

2.8 kg = 2800 g

2800 g + 4 g = 2804 g

8mm tube / 2 mm squares

4 can fit

1 Gb = 1000 mb

40 Gb = 40,000 mb

40,000 mb / 2 mb = 20,000 photos

Here's all the help you need:

1).  1 km  =  1,000- m

2).  1 kg  =  1,000 g

3).  Freebie.  2 fits into 8 four times.

4).  1 mega...  =  1,000 kilo...

5).  1 Giga...  =  1,000 Mega...

According to the solving Velocity when the ball is halfway down = 153.3 m/s The velocity when the ball hits the water is 216.8 m/s.

Given,

Height of the Grand Canyon = h = 2400 m

Velocity of the ball at the top = u = 0 m/s

The acceleration due to gravity = g = 9.8 m/s²

We need to find the velocity of the ball halfway down and when it hits the water.

When the ball reaches halfway down, its height h = 2400/2 = 1200 m

Case 1: The velocity of the ball halfway down

When the ball reaches halfway down, its height h = 1200 m.

Apply the second equation of motion, which is given as:

v² = u² + 2ghv²

= 0 + 2 × 9.8 × 1200v²

= 23520v

= √23520v

= 153.3 m/s

Therefore, the velocity of the ball halfway down is 153.3 m/s.

Case 2: The velocity of the ball when it hits the water

When the ball reaches the bottom of the Grand Canyon, its height h = 0 m. Apply the second equation of motion, which is given as:

v² = u² + 2ghv²

= 0 + 2 × 9.8 × 2400v²

= 47040v

= √47040v

= 216.8 m/s

Therefore, the velocity of the ball when it hits the water is 216.8 m/s.

Answer:

Velocity when the ball is halfway down = 153.3 m/s

The velocity when the ball hits the water is 216.8 m/s.

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The angle of refraction when a ray of light passes from air into water at an angle of 50.0° to the surface of the water is approximately 34.4°, and the speed of light in water is about 2.26 x 10⁸ m/s.

When light passes from one medium to another, it undergoes refraction, which involves a change in direction and speed. The angle of refraction is determined by Snell's law, which states that the ratio of the sines of the angles of incidence and refraction is equal to the ratio of the speeds of light in the two media.

In this case, the angle of incidence is 50.0° and the medium changes from air to water. By applying Snell's law, we can calculate the angle of refraction to be approximately 34.4°.

The speed of light in a medium is determined by the refractive index, which is the ratio of the speed of light in vacuum to the speed of light in the medium. The refractive index of water is approximately 1.33.

Therefore, the speed of light in water can be found by dividing the speed of light in vacuum (approximately 3 x 10⁸ m/s) by the refractive index, resulting in approximately 2.26 x 10⁸ m/s.

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Explanation:

Specific heat of a substance is defined as the amount of heat that is required to raise the temperature of one mole or mass of a substance by 1°C.

The total amount of heat of a substance is the amount of heat required to raise the temperature of the given mass of the substance by 1°C.

Specific heat is an intensive property and does not depend on the amount of matter that is present within a substance.

Total amount of heat is an extensive property of matter and it is predicated on the amount of matter present.

Nuclear power plants have several benefits when it comes to generating electricity. One of the major advantages is that they produce a large amount of electricity. Nuclear reactors can generate more than 1,000 megawatts of electricity, making them highly efficient.

Additionally, nuclear power plants do not emit greenhouse gases, which helps reduce the impact of climate change. Another benefit is that nuclear power plants have a continuous power output, as they do not rely on weather conditions like solar or wind power. Furthermore, nuclear power plants require less fuel compared to traditional power plants, reducing the cost and dependency on fossil fuels. Lastly, nuclear power plants can operate for long periods of time without interruption, providing a reliable source of electricity. Overall, nuclear power plants offer a reliable, efficient, and low-carbon alternative for generating electricity.

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Answer:

I = 138.75N*s

Explanation:

I = F*t

I = Impulse or momentum

t = Time or duration

F = Force

I = 18,500N*0.0075s

I = 138.75N*s

Answer:

P = 5880  J

Explanation:

Given that,

The mass of the block, m = 30 kg

The block is sitting at a height of 20 m.

The block will have gravitational potential energy. The formula for gravitational potential energy is given by :

\(P=mgh\\\\=30\times 9.8\times 20\\\\=5880\ J\)

So, the required potential energy is equal to 5880  J.