Hi, Solve for λ
E=hc/λ

Answer:

pls answer this for me

Explanation:

Which statement best describes an example of selective breeding?

A. People grow many radish plants from a package of radish seeds.

B. People use viruses to place certain genes in the cells of plant

tissues O

C. People use enzymes to cut DNA into pieces that are put back together.

D. People grow rose plants whose flowers have petals of a specific color.

\(\\ \sf\longmapsto \Delta P=P\)

\(\\ \sf\longmapsto m1v1=m2v2\)

\(\\ \sf\longmapsto 90(7)=m2(10)\)

\(\\ \sf\longmapsto 10m2=630\)

\(\\ \sf\longmapsto m2=\dfrac{630}{10}\)

\(\\ \sf\longmapsto m2=63kg\)

Bruces mass is 63kg

The description of the nature of image formed 2nd if the object X distance from the pole of mirror then find image distance from the pole 3rd if the radius of curvature of mirror is are then write the relation between object distance image distance and focal length of the mirror give one use of concave mirror is given below

A concave mirror is a mirror with a curved, inwardly facing surface. When an object is placed in front of a concave mirror, the mirror will form an image of the object. The nature of the image formed depends on the position of the object relative to the mirror.

To find the image distance from the pole of the mirror, you can use the mirror equation:

1/image distance + 1/object distance

= 1/focal length.

If the object is X distance from the pole of the mirror, you can substitute this value for the object distance in the mirror equation to find the image distance.

The relationship between the object distance, image distance, and focal length of a concave mirror can be expressed using the mirror equation:

1/image distance + 1/object distance

= 1/focal length.

This equation tells us that the sum of the reciprocals of the object distance and image distance is equal to the reciprocal of the focal length.

Therefore, One use of a concave mirror is as a reflector in a flashlight or car headlight. The concave mirror focuses the light to a point in front of the mirror, creating a bright beam of light that can be directed at a specific location.

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The direction of current flow in a current loop determines whether it will attract or repel a nearby bar magnet. If the current flow creates a magnetic field that opposes, they will repel each other, while if it creates a field that attracts the magnet, they will attract.

The direction of current flow in a current loop affects the interaction between the loop and a bar magnet. If the current flows in a direction that creates a magnetic field that opposes the field of the bar magnet, the loop and the magnet will repel each other.

On the other hand, if the current flows in a direction that creates a magnetic field that attracts the field of the bar magnet, the loop and the magnet will attract each other. Therefore, the direction of current flow in the loop determines whether it will attract or repel the bar magnet.

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The complete question is :

How does the direction of current flow affect the interaction between a current loop and a bar magnet?

Answer:

Polar bears (Ursus maritimus) are of special interest because of their large size, white color and position as the top-level carnivore in the remote arctic environment. They occur only in the northern hemisphere nearly always in association with sea ice. They have only two colors of fur: tan and white. Polar bears were created to withstand cold temperatures and are quite adaptable. Polar bears are ferocious and the most dangerous of bears. They can lop a person's head off with one swoop of their paw.

Answer:

(200KG)(9.81 m/s^2=1962

1962N/2.5m^2=784.8pa or 7.84.8 N/m^2

Within an H-II region, hydrogen atoms become ionized by absorbing ultraviolet radiation from a nearby star.

The high-energy photons from the star have enough energy to knock an electron off the hydrogen atom, leaving a positively charged hydrogen ion or proton.

This process is known as photoionization and is the main mechanism for ionizing hydrogen in H-II regions.

The ionized hydrogen then emits its own radiation, creating the characteristic red glow of H-II regions.

While hydrogen atoms can also become ionized by other means, such as absorbing thermal radiation or capturing free electrons, these processes are less common in H-II regions compared to photoionization by ultraviolet radiation from nearby stars.

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Answer:

D. The rock cycle takes too long to be able to observe it in entirety.

Explanation: is answer

In order to calculate the amount of Normal Saline that will infuse in 12 hours given that a medication order states Normal Saline (NS) IV to infuse at 50 mL/hr, we can use the following formula:

Amount of Normal Saline = Flow Rate × Time

To find out how much Normal Saline will infuse in 12 hours, we can substitute 50 mL/hr for the Flow Rate and 12 hours for the Time.

Amount of Normal Saline = 50 mL/hr × 12 hoursAmount of Normal Saline = 600 mLTherefore, 600 mL of Normal Saline will infuse in 12 hours.

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Answer:

43.58 m

Explanation:

If you travel 500 m on a straight road that slopes upward at a constant angle of 5 degrees

Using trigonometry ratio

Sin 5 = opposite/hypothenus

Where the hypothenus = 500m

Opposite = height h

Sin 5 = h/500

Cross multiply

500 × sin 5 = h

h = 500 × 0.08715

h = 43.58m

Therefore, the height above the starting point is equal to 43.58m

Answer:

The free fall acceleration toward the sun at the distance of the earth's orbit is 9.8m/s^2

The impulse (J) is defined as the product of the force (F) and the time (Δt) for which it is applied:

J = FΔt

Substituting the given values, we get:

J = 10 N × 2.5 s = 25 N·s

Therefore, the impulse when an average force of 10 N is exerted on a cart for 2.5 s is 25 N·s.

The elevator does 24,000 Joules of work in lifting a 600 N person over a distance of 40 meters.

To calculate the work done by an elevator in lifting a person, we can use the formula:

Work = Force × Distance × cos(θ)

Where:

Force = 600 N (the weight of the person)

Distance = 40 m (the vertical distance the person is lifted)

θ = 0 degrees (cosine of 0 is 1, indicating the force and distance are in the same direction)

Plugging in the values:

Work = 600 N × 40 m × cos(0°)

= 600 N × 40 m × 1

= 24,000 N·m

= 24,000 J (Joules)

Therefore, the elevator does 24,000 Joules of work in lifting a 600 N person over a distance of 40 meters.

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Explanation:

there are many things. I am not sure what your teacher told you.

one of the first strange observations leading to this conclusion was the "loop-di-loop" in the track of Mars. because of the different orbits of Earth and Mars, sometimes one (particularly Earth as the faster one) swings around the sun in relation to the other, and with that first moves away and suddenly moves closer again, making the track of Mars appear on Earth as if it would make a loop in the sky.

The distance of the airplane from the radar will be 1.08×10⁶ m. Distance can refer to a physical length.

Distance is a numerical representation of the distance between two objects or locations.

The distance of the airplane from the radar is found by the formula;

Distance = velocity × time

Distance =  3.0 x 10^8 m/s× 0.0036 s,

Distance =  1.08×10⁶ m.

Hence, the distance of the airplane from the radar will be 1.08×10⁶ m.

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According to the Skygazer's Almanac for 2022 at 40 degrees, Venus and Saturn will be in opposite parts of the sky on December 17, 2022.

The Skygazer's Almanac provides astronomical information for a specific location and year. In this case, at a latitude of 40 degrees, the almanac indicates that Venus and Saturn will be in opposite parts of the sky on December 17, 2022. This means that Venus and Saturn will appear at opposite sides of the celestial sphere as observed from Earth. However, it's important to note that the almanac's predictions are approximate and can be influenced by various factors, including atmospheric conditions and the observer's specific location. To obtain the most accurate and up-to-date information, it is recommended to consult more recent astronomical sources or use specialized software that can provide precise positions and dates for celestial events.

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Answer:

a) R = 172.82 m, 5.3 north of east    b)   v = (0.24 ± 0.01) m / s

Explanation:

a) the displacement is a vector, so the easiest method to lock is looking for each component

let's start decomposing the vectors

 x₁ = - 160 m

second shift

angle 45 south of east

     cos (-45) = x₂ / d₂

     sin (-45) = y₂ / d₂

     x₂ = d₂ cos 45

     y₂ = -d₂ sin 45

     x₂ = 180 cos 45 = 127.28 m

     y₂ = -180 sin 45 = - 127.28 m

third shift

      cos 35 = x₃ / d₃

      sin 35 = y₃ / d₃

      x₃ = d₃ cos 35

      y₃ = d₃ sin 35

      x₃ = 250 cos 35 = 204.79 m

      y₃ = 250 sin 35 = 143.39 m ₃

X axis

       x_total = x₁ + x₂ + x₃

       x_total = -160 +127.28 +204.79

       x_total = 172.07 m

Y axis  

      y_total = y₁ + y₂ + y₃

      y_total = 0 - 127.28 + 143.39

      y_total = 16.11 m

to compose the displacement we use the Pythagorean theorem

      R = \(\sqrt{x^2 +y^2}\)

      R = \(\sqrt{172.07^2 + 16.11^2 }\)

      R = 172.82 m

in angle is

      tan θ = y_total / x_total

      ten θ = 16.11 / 172.07 = 0.0936

      θ = tan⁻¹ 0.0936

       θ = 5.3

angle is 5.3 north of east

b) the error in the distance is 5%,

               e% = ΔR/R  100

               ΔR = e% R / 100

               ΔR = 5 172.82 / 100

               ΔR = 8.6 m

the time error Dt = 20 s

We calculate the speed and this we calculate the error

      v = R / t

      v = 172.82 / 12 60

      v = 0.240027 m / s

the error in this magnitude is

      Δv = \(\frac{dv}{dR} \ \Delta R + \frac{dv}{dt} \ \Delta t\)

       Δv = \(\frac{1}{t} \ \Delta R + \frac{R}{t^2 } \ \Delta t\)

         Δv = \(\frac{ 8.6}{720} + \frac{172.82 \ 20}{720^2 }\)

         Δv = 0.013 m / s

the measurement result is

         v = (0.24 ± 0.01) m / s

Answer:

The total displacement 560 m

Explanation:

 Given:

t₀ = 0 s

t = 25 s

V₀ = 10 m/s

V = 35 m/s

___________

D - ?

Acceleration:

a =  (V - V₀) / (t - t₀) = (35 - 10) / (25 - 0) = 25 / 25 = 1.0 m/s²

The total displacement:

D = V₀·t + a·t² / 2

D = 10·25 + 1.0·25² / 2 ≈ 560 m

Answer:

have a greater mechanical advantage

Explanation:

this enables the mechanism to output a large amount of force compared to the force put into it due to ratio of the wheel and the axle therefore providing enough force to steer the rather heavy wheels while saving the driver some muscle power

Answer:

According to Newton's third law, the force exerted on each driver during the collision is equal and opposite to the force exerted on their respective vehicles. We can use the principle of conservation of momentum to find the force experienced by each driver.

The initial momentum of the car and driver is the product of their mass and velocity: (800 kg)(6.60 m/s) = 5280 kgm/s. The initial momentum of the truck and driver is (4000 kg)(6.60 m/s) = 26400 kgm/s. After the collision, the final momentum of the combined system (the car, truck, and drivers) is 0, since the collision is perfectly inelastic and the two vehicles stick together. This means that the final momentum of the car and driver is equal and opposite to the final momentum of the truck and driver.

We can set up the following equation to solve for the force experienced by the car driver:

Force (car driver) = (final momentum of car and driver) / (collision time)

= (-final momentum of truck and driver) / (collision time)

= (-26400 kg*m/s) / (0.100 s)

= -26400 N

The negative sign indicates that the force is in the opposite direction of the initial momentum of the car and driver. The force experienced by the truck driver is equal in magnitude to the force experienced by the car driver, so the force experienced by the truck driver is also -26400 N.

Explanation:

Answer: 1.18

Explanation: The formula I used is:

f=1/(2pi) times the square root of k/m

F is the frequency, in this problem, 10 Hz.

K is the spring constant.

M is the mass.

So plugging everything in we would have:

10=1/(2pi)•sqrt x/0.00030

The answer I got was 1.18

Answer:

kinetic energy

Explanation:

A wind turbine transforms the mechanical energy of wind into electrical energy. A turbine takes the kinetic energy of a moving fluid, air in this case, and converts it to a rotary motion. As wind moves past the blades of a wind turbine, it moves or rotates the blades. These blades turn a generator

The new volume of the volleyball would be 0.506 L.

To find the new volume, we can use the combined gas law, which states that P1V1/T1 = P2V2/T2, where P is pressure, V is volume, and T is temperature. We can first convert the initial pressure of 752.0 mmHg to atm, which is 0.987 atm.

Then, we can convert the initial temperature of 20.0°C to Kelvin, which is 293.15 K. Plugging these values along with the initial volume into the equation, we get:

(0.987 atm)(2.00 L)/(293.15 K) = (2943 mmHg)(V2)/(273.15 K)

Solving for V2, we get V2 = 0.506 L.

Therefore, the new volume of the volleyball would be 0.506 L when taken to a place with a pressure of 2943 mmHg and a temperature of 0.245°C.

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A.

The X velocity of the baseball: 10 m/s * cos(20 degrees) = 9.66 m/s to the right

The Y velocity of the baseball: 10 m/s * sin(20 degrees) = 3.11 m/s upwards

B.

The X velocity of the football: 0 m/s ( when thrown straight up)

The Y velocity of the football: 100 m/s upwards

C.

The X velocity of the tennis ball: 15 m/s to the right

The Y velocity of the tennis ball: 0 m/s ( when thrown off a cliff)

Velocity is described as the directional speed of an object in motion as an indication of its rate of change in position as observed from a particular frame of reference and as measured by a particular standard of time.

Velocity can be represented mathematically in the  equation

V = d/t,

where V is the velocity,

d is the distance, and

t is the time.

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Answer:

Explanation:

The volume of the chess can be found by using the formula

volume = final volume of water - initial volume of water

From the question

final volume of water = 43 mL

initial volume of water = 35 mL

We have

volume = 43ml - 35ml = 8 mL

We have the final answer as

Hope this helps you

Answer: The answer is c!

A heater in a fish tank warming the water at the bottom of the tank is an another example of convection.

Convection, which is the extensive movement of molecules within gases and liquids, is the mechanism through which heat is transported. Although most of the heat transfer occurs as a result of fluid motion, conduction is initially employed to transfer heat from the item to the fluid.

Convection is therefore demonstrated by a heater in a fish tank warming the water at the tank's bottom.

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The star 51 Pegasi has a planet whose minimum mass is less than Jupiter's.

A planet is a celestial body orbiting a star or stellar remnant that is massive enough to be rounded by its own gravity, is not massive enough to cause thermonuclear fusion, and has cleared its neighbouring region of planetesimals. The eight planets in the Solar System are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Historically, planets were thought to be divine bodies that governed fate and human affairs.

This statement is accurate because the calculation we performed yielded a minimum mass of 51 Pegasi's planet, mP sin(i), that is less than Jupiter's mass, mJ.
The calculation was done by taking the product of the cube root of the period in seconds divided by the constant 4.19 ✕ 10−10 N ·
m2/kg2, the 2/3 root of the mass of 51 Pegasi, and the semiamplitude, K, of the velocity range.

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If the lead can be extracted with 92.5 efficiency, the mass of ore is required to make a lead sphere with a 7.00 cm radius is 17.707 kg.

To find the mass of ore, the given values are,

The radius of the lead sphere is r = 7.0 cm,

The lead can be extracted with, η = 92.5% = 0.925 efficiency.

Density is the substance's mass per unit of volume.

We know the density of lead as,

⇒ p = 11.4 g/cm³ .

The volume of the lead sphere is,

V = 4/3πr³

   = 4/3π(7)³

V = 1436.7 cm³.

Mass of the lead present in the lead sphere is,

m = p . V

    = 11.4  × 1436.7

    = 16379 g

m = 16.379 kg

From the expression of efficiency, we calculate the mass of the ore,

η = Mass of lead obtained / Mass of the ore to be taken

0.925 = 16.379 kg / Mass of the ore to be taken

Mass of the ore to be taken = 17.707 kg

If the lead can be extracted with 92.5 efficiency, the mass of ore is required to make a lead sphere with a 7.00 cm radius is 17.707 kg.

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When white light strikes a prism, it undergoes a process called refraction, which is the bending of light as it passes from one medium to another with a different refractive index.

The amount of bending depends on the wavelength of the light and the angle at which it enters the prism.

Different wavelengths of light bend at different angles, causing the white light to separate into its constituent colors, known as a spectrum. This process is known as dispersion. The shorter wavelengths of violet and blue light bend more than the longer wavelengths of orange and red light, causing the colors to separate with violet and blue light bending the most and red light bending the least. This results in a rainbow-like spectrum of colors, with violet on one end and red on the other.

This occurs because the refractive index of the prism is different for each wavelength of light. The refractive index of a material is a measure of how much it slows down the speed of light passing through it, and it varies with the wavelength of the light. As a result, each wavelength of light bends at a slightly different angle as it passes through the prism, causing the colors to separate.

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Answer:

With distance from the ridge crest, the sediments and crust get thicker. This also supports the idea that the youngest rocks are on the ridge axis and that the rocks get older with distance away from the ridge (Figure below). Something causes the seafloor to be created at the ridge crest.

Answer: With distance from the ridge crest, the sediments and crust get thicker. This also supports the idea that the youngest rocks are on the ridge axis and that the rocks get older with distance away from the ridge (Figure below). Something causes the seafloor to be created at the ridge crest

Explanation:

New rock is formed near the mid-oceanic ridge as oceanic plates diverge or separate from each other. Hot rocks rising from the asthenosphere melt from decompression as they rise, filling the fault and forming new basaltic oceanic crust. As new crust is added, older crust is pushed away. Therefore, the further away from the mid-oceanic ridge, the older the rocks.