1. What is biotechnology?

2. What are the three types of biotechnology?

3. What is genetic engineering?

4. When using cloning, how is the baby's genes compared to the parent?

5. Give an example of artificial selection.

6. Give an example of biotechnology in the medical field.

7. Give an example of biotechnology in agriculture.

8 List one benefit and one risk of using genetic engineering.

9. List one benefit and one risk of using cloning.

10. List one benefit and one risk of using artificial selection

Answer:

The maximum amount of kinetic energy the skateboarder can have is entirely dependent on the amount of potential energy of the system.

Explanation:

As the skateboarder moves, her potential energy is converted to kinetic energy (KE), or the energy of motion as her position changes along the track and the velocity changes.

Answer:

Explanation:

Kinetic energy turned into internal energy.

Potential energy has not changed.

The answer is 3) the total resistance of the coil at 20°C is 2.47 ohms and 4) the temperature of the device when its resistance is 92 ohms is 103.2°C.

3. Calculate the resistivity of a manufactured "run" of annealed copper wire at 20°C, in ohms-circular mils/foot, if its conductivity is 96.5%.

Given data: Conductivity = 96.5%

Resistivity = ?

Resistivity is the reciprocal of conductivity.ρ = 1/σ = 1/0.965 = 1.036 ohms-circular mils/foot

Therefore, the resistivity of a manufactured "run" of annealed copper wire at 20°C, in ohms-circular mils/foot is 1.036.2. A coil of annealed copper wire has 820 turns, the average length of which is 9 in. If the diameter of the wire is 32 mils, calculate the total resistance of the coil at 20°C.

Given data: Number of turns (N) = 820

Average length (L) = 9 in = 9 × 0.0833 = 0.75 ft

Diameter (d) = 32 mils

Resistance (R) = ?

Formula to calculate resistance of a coil R = ρ(N²L/d⁴)R = 10.37(N²L/d⁴) [Resistance in ohms]

Substituting the given values in the formula R = 10.37 × (820² × 0.75)/(32⁴) = 2.47 ohms

Therefore, the total resistance of the coil at 20°C is 2.47 ohms.

4. The resistance of a given electric device is 46 ohms at 25°C. If the temperature coefficient of resistance of the material is 0.00454 at 20°C, determine the temperature of the device when its resistance is 92 ohms.

Given data: Resistance at 25°C (R₁) = 46 ohms

Temperature coefficient of resistance (α) = 0.00454

The temperature at which α is given (T₂) = 20°C

The temperature at which resistance is to be calculated (T₁) = ?

Resistance at T₁ (R₂) = 92 ohms

Formula to calculate temperature T₁ = T₂ + (R₂ - R₁)/(R₁ × α)

Substituting the given values in the formula T₁ = 20 + (92 - 46)/(46 × 0.00454) = 103.2°C

Therefore, the temperature of the device when its resistance is 92 ohms is 103.2°C.

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Answer:

the water spins the wheel wiche gives energy.

Explanation:

Answer:

Hence from liquid to solid or solid to liquid the transition has to cross the grey zone. This grey zone transition is is very crucial which includes the intermolecular forces acting on the molecules and each atoms which makes the change in state from hot to cold and cold to hot.

Explanation:

The rate at which the volume of the box is increasing is 3 cubic feet per minute. We can use the formula for the volume of a rectangular box, which is V = lwh.

To find the rate at which the volume is increasing, we need to take the derivative of V with respect to time t:  dV/dt = (dV/dl) * (dl/dt) + (dV/dw) * (dw/dt) + (dV/dh) * (dh/dt) , We know that dl/dt = dw/dt = 4 ft/min (since both the length and width are increasing at the same rate), and dh/dt = -5 ft/min (since the height is decreasing).
To find the values of dV/dl, dV/dw, and dV/dh, we can take the partial derivatives of V:
dV/dl = wh
dV/dw = lh
dV/dh = lw
Substituting these values and the given dimensions (? = 4, w = h = 2), we get:
dV/dt = (2 * 2 * 4) + (4 * 2 * 2) + (4 * 2 * (-5))
= 16 + 16 - 40
= -8

To find the rate of change of the volume (V) with respect to time, we first need to find the expression for the volume of the box, which is given by V = lwh. Now, we differentiate V with respect to time (t) to get the rate of change: dV/dt = dl/dt * wh + dw/dt * lh + dh/dt * lw
Given that dl/dt = dw/dt = 4 ft/min and dh/dt = -5 ft/min, we can plug these values into the equation above, along with the values of l, w, and h: dV/dt = 4 * 2 * 2 + 4 * 4 * 2 + (-5) * 4 * 2 = 16 + 32 - 40 = 12 ft³/min.
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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:

A is true ,b is true

Explanation:

When the temperature of the blocks is the same as the temperature of your hand, you feel neither hot nor cold to the touch. Hence, option ( 3) is correct.

Temperature is a unit used to describe hotness or coldness. It can be stated in terms of any number of arbitrary scales and shows the direction in which heat energy will naturally flow, i.e., from a hotter body to a colder body (one at a lower temperature).

Temperature is not the same as the energy of a thermodynamic system; for instance, an iceberg has a significantly larger total heat energy than a match, despite the fact that a match is burning at a much higher temperature.

If you touch a block that is at higher than or  at lower than  the temperature of your hand, you feel hot or cold respectively. But,  when the temperature of the blocks is the same as the temperature of your hand, you feel neither hot nor cold to the touch.

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The U.S. Department of Defense created a satellite-based navigation system called the Global Positioning System (GPS). The GPS system provides positioning accuracy to within a few meters, making it a crucial tool for navigation and positioning in many different applications.

GPS is a worldwide navigation system that uses a network of satellites to provide precise positioning, velocity, and time information to users on the ground, in the air, or at sea. The system was originally developed for military use, but today it is widely used.

GPS uses a constellation of satellites orbiting the Earth that transmit signals to GPS receivers on the ground. The receiver calculates its position by determining the time delay between the signals from different satellites .

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All living organisms are mainly composed of the elements: Oxygen, Carbon, Hydrogen, Nitrogen, Phosphorus.

The correct answer choice is option c.

Living organisms are those things that has life. They include plants and animals. Living organisms be it plants or animals are composed of important elements such as carbon, oxygen and others.

However, there are certain characteristic features which living organisms possess. Some of these characteristics of living things are as follows:

Other characteristics of living organisms are:

In conclusion, we can now confirm from above the explanation given above that living things are made up of certain elements.

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The correct statements include:

option A, B, C, D

The Incorrect statements include:

Different types of electromagnetic radiation are fundamentally different types of waves. (All types of electromagnetic radiation are fundamentally the same type of wave but have different frequencies and wavelengths.)

The only type of electromagnetic radiation that is actually considered light is visible light. (All types of electromagnetic radiation are considered light, including radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays.)

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Answer: A B C D

Explanation: k12 I had this quiz

If the transmitting tower of a tv station is held upright by guy wires that extend from the top of the tower to the ground, the horizontal component is larger if θ < 45°

The force along the guy wires is tension force. Resolving the tension force into its horizontal and vertical component. Let the vertical component be Ty and the horizontal component be Tx. Since these two components are perpendicular to each other and the actual tension force connects these two components it forms a right angled triangle.

In a right angled triangle, trigonometric ratios are applicable.

sin θ = Opposite side / Hypotenuse

cos θ = Adjacent side / Hypotenuse

Here,

Hypotenuse = T

Adjacent side = Tx

Opposite side = Ty

Tx = T cos θ

Ty = T sin θ

If θ > 45°, Ty is larger and if θ < 45°, Tx is larger.

Therefore, the horizontal component is larger if θ < 45° and the vertical component is larger if θ > 45°

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Answer:

.

Explanation:

To determine the output power (in watts) of a voltage rail, you need to know both the voltage and the current flowing through the rail. The formula for power (in watts) is P = V x I, where P is power, V is voltage, and I is current. So, if you know the voltage and current of the voltage rail, you can multiply them together to get the output power. Keep in mind that power is measured in watts, voltage is measured in volts, and current is measured in amperes.

To determine the output power (in watts) of a voltage rail, you'll need to know the voltage across the rail (in volts) and the current flowing through it (in amperes). You can use the following formula:
Power (in watts) = Voltage (in volts) × Current (in amperes)
Step 1: Measure the voltage across the rail using a voltmeter.
Step 2: Measure the current flowing through the rail using an ammeter.
Step 3: Multiply the measured voltage and current values to calculate the output power in watts.
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C) In short time exposures, their images looked stellar.

The term "quasi-stellar" in quasars refers to the appearance of these objects in short time exposures. When observed with limited exposure time, quasars appear star-like or stellar in nature. This is because their intense luminosity is concentrated in a very small region, giving them a point-like appearance similar to stars. However, upon closer examination and with longer exposures, the unique characteristics of quasars become evident. Quasars are actually highly energetic and distant celestial objects that emit enormous amounts of radiation across a wide range of wavelengths. They are powered by supermassive black holes at the centers of galaxies, which accrete matter and release vast amounts of energy. Their spectra show distinct emission lines and other characteristics that distinguish them from ordinary stars.
So, while quasars initially appear stellar in short exposures, their true nature and extraordinary properties become apparent through detailed observations and analysis.

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Answer:

1: Because matter has many different forms.

2: The materials that are shown can be organized into 3 different forms; solid, liquid, and gas.

3: The image of the liquids is most likely a material that cannot be found in nature. Liquids have many useful properties, but it depends on the liquid. Bleach is a liquid that has is very useful for sterilizing. Water is useful because without it, life on earth would not exist. And there are many more liquids, but I am going to cut it short here because there too many to put down.

Explanation:

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The position on Earth's surface directly above the earthquake source is called the epicenter.

During an earthquake, the release of seismic energy occurs at a specific point within the Earth's crust, known as the focus or hypocenter. This is the actual location where the earthquake originates, usually deep within the Earth.

The seismic waves generated by the earthquake travel outward from the focus in all directions. When these waves reach the Earth's surface, the point on the surface directly above the focus is referred to as the epicenter. It is the location where the strongest shaking is typically felt and where the effects of the earthquake are most prominent.

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Answer:

The molecular structure of photovoltaic cells is important for their efficiency because it affects the ability of the cells to absorb and convert light into electricity. The photovoltaic effect, which is the basis of solar cell operation, occurs when photons of light excite electrons within the cell material, causing them to become free from their atomic bonds and creating an electrical current.

The molecular structure of the photovoltaic cell material determines the electronic properties of the material, such as the bandgap energy and the electron mobility, which play a crucial role in the photovoltaic effect. The bandgap energy determines the minimum energy required to excite an electron, and the electron mobility determines how easily the electrons can move within the material.

If the molecular structure is poorly designed, the bandgap energy may be too low to effectively absorb the desired light, or the electron mobility may be too low to allow the electrons to move efficiently, both of which can lead to a reduction in efficiency. On the other hand, if the molecular structure is optimized, the photovoltaic cells can absorb light more effectively, the electrons can move more efficiently, and the overall efficiency of the cells can be improved.

Therefore, the molecular structure of photovoltaic cells is an important factor in determining their efficiency and is carefully considered by scientists and engineers in the design and development of new photovoltaic materials and technologies

Answer:

Net force is 0 (zero)

Net force direction is 0 (zero)

Explanation:

Answer:

The first question is c and the third one is b

Answer:

A. Aplastic skeleton that shows all the bones of the body

Explanation:

because physical means like 3D and not on paper or in technology.

The charge will move to the left.

The electric potential varies linearly with x, so we can find the equation for the potential as:

V(x) = mx + b,

where m is the slope and b is the y-intercept. We can use the given points to solve for m and b:

300 V = m(0 cm) + b

-100 V = m(5 cm) + b

Subtracting the first equation from the second, we get:

-400 V = 5m

m = -80 V/cm

Substituting this value for m into one of the equations, we get:

300 V = -80 V/cm * (0 cm) + b

b = 300 V

So the equation for the potential is:

V(x) = -80 V/cm * x + 300 V

Now we can use the electric field to determine the direction of the force on the positive charge. The electric field is the negative gradient of the potential:

E(x) = -dV/dx = 80 V/cm

At x = 2.5 cm, the electric field is:

E(2.5 cm) = 80 V/cm

Since the charge is positive, it will experience a force in the direction of the electric field, which is to the left. Therefore, the charge will move to the left.

The answer is (b) Move to the left.

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Answer:

The tilt of the Earth causes some places to be hit more by the sun's rays, while the topography affects wind travel.

Explanation:

Because of the way the Earth is tilted on its axis, some parts receive more heat due to being hit more directly by the sun's rays. This is the reason why the North pole is very cold since it doesn't get directly hit by the sun's rays. As for the topography, the way the wind travels is affected by mountains, and the temperature of winds are affected by the places the wind originated from. Also, high altitude places such as mountain summits are colder, while low altitude places are warmer. So, when an area is under direct sunlight, it causes warm climate, and when an area receives warm air because of its topography, it causes further heat.

a. As the ball is dropped, the energy at the point of release is all potential energy, which then changes to kinetic and potential as the ball falls, then all kinetic just when the ball hits the trampoline and back to potential when the ball rebounds to its previous height.

b. The energy at the point of release is equal to the energy at the top of the rebound

c. The height of the rebound of the ball can be used to test which trampoline is bouncier.

The law of conservation of energy states that in a closed system, energy is neither created nor destroyed but can be transformed from one form to another.

According to the law of conservation of energy, the total energy in a system is always conserved. This means that the total energy before and after a change is the same.

For the ball dropped from the trampoline, the energy of the ball is a sum of potential energy and kinetic energy. At some point, the energy of the ball is all potential or all kinetic, whereas at various points, it is a sum of the two energy forms.

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s=vt

s=6m/s×600s

s=3600m

Answer:

The ratio of the ratio of series and parallel combination​ is n²:1.

Explanation:

The equivalent resistance in case of series combination is given by :

\(R_s=R_1+R_2+.....+R_n=nR\) ....(1)

The equivalent resistance in case of parallel combination is given by :

\(R_P=\dfrac{1}{R_1}+\dfrac{1}{R_2}+.....+\dfrac{1}{R_n}=\dfrac{R}{n}\) ....(2)

Dividing equation (1) and (2) we get :

\(\dfrac{R_s}{R_P}=\dfrac{nR}{R/n}\\\\\dfrac{R_s}{R_P}=\dfrac{n^2}{1}\\\\R_s:R_P=n^2:1\)

So, the ratio of the ratio of series and parallel combination​ is n²:1. Hence, this is the required solution.

n resistance is each of resistance R is first connected in series and then in parallel , the ratio of series and parallel combination​ will be \(n^{2}\) : 1

In a series combination, the resistances are connected with end to end in contact, such that current flow is equal in all the resistances in the combination. Whereas in the parallel combination, resistances are connected in such a manner that they get an equal voltage across their ends.

Parallel combination. When two or more resistances are connected between the same two points, they are said to be connected in parallel combination. The reciprocal of the combined resistance of a number of resistances connected in parallel is equal to the sum of the reciprocals of all the individual resistances.

if n number of resistances are connected in series combination .

R (equivalent ) = R1 + R2 + R3 + R4 -------- + Rn

                        = R + R + R + R ---------------- + R

                        = n*R

if n number of resistances are connected in parallel combination .

1/ R (equivalent )  = 1/R1 + 1/R2 + 1/R3 ---------------- 1/Rn

                             = 1/R + 1/R + 1/R + --------------------- 1/R

                             = n/R

R  (equivalent )  = R/n

Ration = series combination / parallel combination

          = n*R / (R/n) = \(n^{2}\) /1

           = \(n^{2}\) : 1

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Tension and compression forces act on diagonal and vertical members respectively in a truss structure.

A truss is a construction that comprises of a progression of interconnected triangles, intended to disperse stacks and give security. The powers that follow up on a bracket can be characterized into two kinds: pressure and pressure powers.

Tension powers are powers that draw on a part, like a rope or link. In a support, strain powers follow up on the corner to corner individuals that structure the triangles. These individuals are under pressure since they are being pulled separated.

Compression forces are forces that push on a part, like a segment or shaft. In a support, pressure powers follow up on the upward individuals that associate the top and base harmonies of the bracket. These individuals are under pressure since they are being crushed together.

Notwithstanding pressure and pressure powers, brackets can likewise be exposed to twisting minutes and shear powers, which are brought about by outer burdens following up on the support.

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The International Space Station moves about once a year to get out of the way of dangerous debris. Critical parts of the station can withstand impact of objects as large as 1 cm, according to NASA. The agency didn't specify the size of the Cosmos 1408 fragment that posed a danger.

Answer:

The troposphere and stratosphere are the only layers where you would find clouds.

Answer: Based on the information provided, the only layers where you would find clouds are the troposphere and the stratosphere.

The troposphere is the layer of the atmosphere that extends from the Earth's surface to about 8-15 kilometers (5-9 miles) above the Earth. This is the layer where most of the Earth's weather occurs, and it is where you will find clouds, such as cumulus clouds, stratus clouds, and cirrus clouds.

The stratosphere is the layer of the atmosphere that extends from about 15-50 kilometers (9-31 miles) above the Earth. This layer is characterized by a rise in temperature with altitude, and it is where you will find clouds called stratospheric clouds, such as nacreous clouds and polar stratospheric clouds.

The mesosphere is the layer of the atmosphere that extends from about 50-85 kilometers (31-53 miles) above the Earth. This layer is characterized by a decrease in temperature with altitude, and it is generally too cold and dry to support the formation of clouds.

The thermosphere is the layer of the atmosphere that extends from about 85 kilometers (53 miles) to the edge of space. This layer is characterized by a rise in temperature with altitude, and it is generally too thin and diffuse to support the formation of clouds.

I hope this helps! Let me know if you have any other questions.

Answer:

B aluminum

Explanation:

Because aluminum loses 3 types of electrons and it donates it to fluorine.