Complete this paragraph regarding dangers from the Sun.

X-rays and UV rays from the Sun can disrupt 1)_______ radio communication from ground-based radio towers. 2) ______ may also be affected by solar particles that can damage equipment. Humans in 3)_______ are also susceptible to radiation damage from the Sun. Solar activity can also cause 4)________ that can damage electrical transformers and power stations.

1)
A. Ultra high-radiation
B. High-frequency
C. Low-frequency

2)
A. Aircraft
B. Sea Vessels
C. Satelites

3)
A. Spacecraft
B. Airplanes
C. High Mountains

4)
A. Thermal Heating
B. Geomagnetic Storms
C. Electrical storms

If you need further clarification check the attached image. Thanks for the help.

Answer:

Zero.

Explanation:

Given that a rock is thrown vertically upward at an initial velocity of 70 m/s. What is the approximate acceleration of the rock when it reaches its maximum height

(assume upward is the positive y direction)?

Since the reached the maximum height, the final velocity V will be equal to zero.

Using the first equation of motion to find the time.

And since it is a vertical direction, and not horizontal, the acceleration a will be equal to zero.

The speed of sound in water made by a torpedo with a speed of 20.00m/s and explodes upon impact with a target 2000.0m away is 19.72 m / s

v = d / t

v = Velocity

d = Distance

t = Time

d = 2000 m

t = 101.4 s

v = 2000 / 101.4

v = 19.72 m / s

Velocity of an object is the object's rate of change of position with respect to time. It is mostly denoted as m / s.

Therefore, the speed of sound in water is 19.72 m / s

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Answer:

friction

air drag

every thing that opposes the motion affects kinetic energy

Explanation:

kinetic energy is a energy which is increase with increase in motion and potential energy is energy stored while the object is at rest

potential energy ∝ 1/(kinetic energy)

as kinetic energy increases potential energy decreases

Answer:

1. These lines are addressed to Duke.

2. These lines show that Shylock is not willing to forgive the debt a merchant owes him, nor is he willing to justify why he demands that debt be paid, even if it seems cruel.

3. He swore by the Holy Sabbath, which is a holy day for him, who is a Jew. He swore he would get the debt money or a piece of the debtor's flesh.

Explanation:

The lines shown in the question above refer to "The Merchant of Venice" written by Shakespeare. In this story we are introduced to Antonio, a commercial who is very prejudiced against Jews, but when he needs money, he borrows from another merchant, Shylock, who is Jewish. Shylock agrees to lend money to Antonio, but determines the date that this money must be returned, in addition, Shylock states that he will lend the money if Antonio agrees that if this money is not paid by the specified date, Antonio will have to pay with half a kilo of flesh from his own body. Antonio agrees, but doesn't pay the money so Shylock goes after the flesh of Antonio's body and Duke tries to intervene because he thinks this is too cruel. At this point, Shylock speaks the lines shown in the question above, showing that he is not willing to change his mind.

Answer:

44 m

Explanation:

vf = velocity at highest point = 0

vf = vo + at

0 = 29.4 + (-9.81 )t    shows   t = ~ 3 s

d = vo t + 1/2 a t^2

d = 29.4 ( 3) + 1/2 ( -9.81)(3^2 ) = 44 m

The bottom edge of the mirror is approximately 0.286 meters above the floor, and if the person doubles their distance from the mirror, they would see the bottom edge at approximately 1.808 meters horizontally away from the mirror on the floor.

Part (a) To determine the height of the bottom edge of the mirror above the floor, we can use similar triangles. Let's denote the height of the bottom edge of the mirror as y.

From the given information, we have the following measurements:

Height of the person's eyes above the floor (h) = 1.6 m

Distance between the person and the mirror (d) = 2.9 m

The horizontal distance between the mirror and the reflection (x) = 0.55 m

Considering the right triangle formed by the person's eyes, the mirror, and the reflected point on the floor, we can set up the following proportion:

(h - y) / d = y / x

Simplifying the equation, we get:

(h - y) * x = d * y

Expanding the equation:

h * x - y * x = d * y

Rearranging the equation to isolate y:

y * (d + x) = h * x

Finally, we can solve for y by dividing both sides of the equation by (d + x):

y = (h * x) / (d + x)

Plugging in the given values, we have:

y = (1.6 * 0.55) / (2.9 + 0.55) ≈ 0.286 m

Therefore, the bottom edge of the mirror is approximately 0.286 meters above the floor.

Part (b) If the person doubles his distance from the mirror, the new distance (d') would be 2 * d = 2 * 2.9 = 5.8 m.

To find the new horizontal distance (x') along the floor from the mirror when the person looks at the bottom edge of the mirror, we can use a similar approach as in part (a).

Using the same formula:

y = (h * x') / (d' + x')

Rearranging the equation:

y * (d' + x') = h * x'

Expanding the equation:

y * d' + y * x' = h * x'

Isolating x':

x' = (y * d') / (h - y)

Plugging in the values we know:

x' = (0.286 * 5.8) / 1.6 - 0.286) ≈ 1.808 m

Therefore, when the person doubles their distance from the mirror, they would see the bottom edge of the mirror at approximately 1.808 meters horizontally away from the mirror on the floor.

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Answer:

i was doing this is it actually 0.6

Explanation:

;D

The acceleration of the skateboard from its initial velocity to the final velocity over the given time is 0.6m/s².

Motion is simply the change in position of an object over time.

From the First Equation of Motion;

v = u + at

Where v is final velocity, u is initial velocity, a is acceleration and t is time elapsed.

Given the data in the question;

To determine the acceleration of the skateboard, we substitute our given values into the expression above.

v = u + at

10m/s = 4m/s + ( a × 10s)

( a × 10s) = 10m/s - 4m/s

a × 10s = 6m/s

a = 6m/s ÷ 10s

a = 0.6m/s²

Therefore, the acceleration of the skateboard from its initial velocity to the final velocity over the given time is 0.6m/s².

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The 2.0 kg block will slide approximately 4.55 meters down the plane before coming to rest.

To solve this problem, we need to consider the work-energy principle. The work done by the net force on the block will be equal to the change in its kinetic energy. In this case, the initial kinetic energy is 2.0 J and the block comes to rest, so the final kinetic energy is 0 J.

First, let's find the gravitational force acting on the block:
F_gravity = m * g * sin(θ) = 2.0 kg * 9.81 m/s² * sin(20°) ≈ 6.69 N

Next, let's find the frictional force acting on the block:
F_friction = μ * m * g * cos(θ) = 0.40 * 2.0 kg * 9.81 m/s² * cos(20°) ≈ 7.13 N

Now, we can find the net force acting on the block:
F_net = F_gravity - F_friction ≈ -0.44 N (negative because the force opposes the motion)

Since the work done by the net force is equal to the change in kinetic energy:
W = F_net * d = ΔKE = -2.0 J

Now, we can solve for the distance (d) the block slides down the plane:
d = -W / F_net ≈ 2.0 J / 0.44 N ≈ 4.55 meters
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Answer:  \(w=72N\)

Explanation:

\(m=40\ kg\\g=1.8\ m/s^2\\w=mg\\w=40*1.8\\w=72N\)

The angle of incidence at which light that is reflected from a surface is polarized perpendicular to the plane of incidence (i.e. the plane containing the incident ray and the surface normal) is called as the brewster's angle.

It can be calculated using the formula:

n1 sin θc = n2 sin 90°

Simplifying this expression, we get:

sin θc = n2/n1

We can see that this is the same as the expression for tan Brewster's angle, so we can write:

tan θB = sin θc = n2/n1

Therefore, the Brewster's angle for material 1 is:

θB1 = arctan (n2/n1) = arctan (sin θc) = arctan (sin 59°) ≈ 32.5°

And the Brewster's angle for material 2 is:

θB2 = 90° - θB1 = 57.5°

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The question addresses the stability of the atmosphere and the factors that determine convective stability or instability. It also explains the difference between the adiabatic lapse rate of dry air and wet saturated air.

a) The stability of the atmosphere is determined by the temperature profile and relative densities of the air cell and atmosphere. If the temperature of the surrounding atmosphere decreases with altitude at a rate greater than the adiabatic lapse rate of the air cell, the atmosphere is considered convectively stable.

In this case, the air cell will return to its original position. Conversely, if the temperature of the surrounding atmosphere decreases slower than the adiabatic lapse rate of the air cell, the atmosphere is convectively unstable. The air cell will continue moving in the same direction.

b) The adiabatic lapse rate refers to the rate at which temperature decreases with altitude for a parcel of air lifted or descending adiabatically (without exchanging heat with its surroundings). The adiabatic lapse rate of dry air is higher (around \(9.8^0C\) per kilometer) compared to the adiabatic lapse rate of wet saturated air (around 5°C per kilometer).

This difference arises because when water vapor condenses during the ascent of saturated air, latent heat is released, reducing the rate of temperature decrease. A diagram can illustrate the difference between the two lapse rates, showcasing their respective slopes.

c) When wet unsaturated air rises from the ocean surface, its temperature decreases at a rate equal to the dry adiabatic lapse rate. However, if the ambient lapse rate (temperature decrease with altitude) is higher than the adiabatic lapse rate for dry air, a temperature inversion layer forms at higher altitudes.

In this inversion layer, the temperature increases with altitude instead of decreasing. A schematic diagram can depict the temperature changes of the wet air in comparison to the ambient temperature, showing the inversion layer.

Cumulus clouds form at the altitude where the rising moist air reaches the level of the temperature inversion layer. These clouds are formed due to the condensation of water vapor as the air parcel cools to its dew point temperature.

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The nurse determined that the heart beats periodically 60 times in 60 seconds, which means that the heart beats once every second. which in this case is one heartbeat. the period of the heartbeat is 1 second.

Therefore, the period of the heartbeat is 1 second. Option A (1 Hz) is incorrect because 1 Hz refers to the frequency, which is the number of cycles per second, not the period. Option B (60 Hz) is incorrect because it is an extremely high frequency that is not consistent with the human heartbeat. Option D (60 s) is incorrect because it is too long of a period for one heartbeat.
"A nurse takes the pulse of a heart and determines the heart beats periodically 60 times in 60 seconds. The period of her heartbeat is The period of her heartbeat is C: 1 s.

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Answer:Pitch.

Explanation:The relative highness or lowness of sounds produced by the human voice is called pitch.

The relative highness or lowness of sounds produced by the human voice is called pitch. Humans have excellent relative pitch and can discriminate between different frequencies, allowing us to identify different musical notes.

The relative highness or lowness of sounds produced by the human voice is called pitch. Pitch is determined by the frequency of the sound waves produced. Humans have excellent relative pitch and can discriminate between different frequencies, allowing us to identify different musical notes.

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Answer:

please do not trust those scam links

The potential difference across the plates of the capacitor is 40.67 V.

find the potential difference across the plates of the capacitor, we can use the equation q = CV, where q is the charge on the capacitor, C is the capacitance, and V is the potential difference.

Capacitance (C) = 150 μF = 150 ×\(10^{(-6)\) F

Charge on the capacitor (q) = 6.1 × \(10^{(-3)\) C

Rearranging the equation, we have:

V = q / C

Substituting the given values, we get:

V = (6.1 × \(10^{(-3)\) C) / (150 × \(10^{(-6)\)F)

V ≈ 40.67 V

The potential difference across the plates of a capacitor is determined by the charge stored on the plates and the capacitance value.

the capacitor has a capacitance of 150 μF (microfarads) and a charge of 6.1 × \(10^{(-3)\)C (coulombs). Using the formula V = q / C, where V represents the potential difference, we can calculate it by dividing the charge by the capacitance.

Plugging in the given values, we find that the potential difference is 40.67 V. This means that when the capacitor is fully charged with the specified charge, it maintains a potential difference of around 40.67 volts across its plates.

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Answer:

8716.97 N

Explanation:

The force between the planet and the satellite can be calculated using the following equation

Where G = 6.67 x 10^(-11) N m²/kg², m1 is the mass of the satellite, m2 is the mass of the Earth and d is the distance from the center of the Earth to the satellite

Since the radius of the Earth is 6,371 km, we get

d = 42 km + 6,371 km = 6413 km

Then, to convert to m, we need to multiply by 1000

d = 6413 km x 1000 m/km = 6.413 x 10^6 m

Finally, replacing m1 = 900 kg, m2 = 5.972 x 10^24 kg, and d = 6.413 x 10^6 m, we get:

Therefore, the force between the planet and the satellite is 8716.97 N

Answer:

Recessive alleles only show their effect if the individual has two copies of the allele.  

Explanation:

Dominant and Recessive Alleles If your allele pair is FF or Ff, you will have freckles. The only way you can escape a freckled face is to inherit the recessive gene from each parent, giving you the ff allele pair. In general, recessive alleles show up in your phenotype only if you have two of them.

Answer:

Explanation:

perfect drawing

Answer: The rods both have the same charge therefore they repel each other.  The force of repulsion creates a downward force on the balance pan and therefore the balance registers a higher reading.

The volume of a wooden piece that is made up in different shapes such as sphere, cube, cylinder and pyramid having length (l) = radius () = 2m are as follows:SphereA sphere is a three-dimensional object that has a perfectly round geometrical shape, in which the surface area of the sphere is equally distant from its center point in all directions.

Hence, the volume of a sphere is given as: V = 4/3πr³Given, r = 2 mV = 4/3 × π × 2³m³V = 33.51 m³CubeA cube is a three-dimensional object having six square faces, all of equal size. The volume of a cube is given as:V = a³Given, a = 2 mV = 2³m³V = 8 m³Cylinder A cylinder is a three-dimensional object having a circular base and a curved surface. The volume of a cylinder is given as:V = πr²hGiven, r = 2 m and h = 2 mV = π × 2² × 2m³V = 25.13 m³PyramidA pyramid is a three-dimensional object that has a polygonal base and triangular faces that meet at a common point. The volume of pyramid is given as:V = 1/3AhGiven, A = l² = 2² m²V = 1/3 × l² × hV = 1/3 × 2² × 2 m³V = 1.33 m³Therefore, the volumes of wooden piece for each of the shapes such as sphere, cube, cylinder and pyramid having length (l) = radius () = 2m are 33.51 m³, 8 m³, 25.13 m³ and 1.33 m³ respectively.

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Answer:

car b

Explanation:

b is  2/3 of the way to 30 km an hour so that means its 20

Thunder is caused by the high temperatures of lightning that flash heat the surrounding air, causing it to expand explosively.

Thunder refers to the sound that results from the rapid expansion of air around lightning. This sudden expansion of air causes an increase in pressure and density, creating sound waves that travel through the air as a rumble or a sharp crack.

Sound travels at a speed of approximately 1,125 feet (340 meters) per second through the air. However, light travels at a much faster speed of approximately 186,282 miles (299,792 kilometers) per second through a vacuum.The answer to the given question is the high temperatures of lightning that flash heat the surrounding air, causing it to expand explosively.

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Complete question:

Thunder is caused by __________.

Multiple Choice

the compression of free photons in the lightning bolt

high temperatures of lightning that flash heat

the surrounding air, causing it to expand explosively

the compression of free electrons in the lightning bolt

the combustion of flammable atmospheric gases by the lightning bolt

Acceleration due to gravity is 9.8 m/s² then the book weighs 3.06 kg in total.

where d denotes the separation between the object's and the earth's centers. The acceleration of gravity is denoted by the symbol g in the first equation above. Its value on Earth is 9.8 m/s2. Alternatively put, the acceleration of gravity at sea level on earth's surface is 9.8 m/s2. Weight of a body on the moon is calculated as follows: mass of the body x lunar gravitational acceleration (30 x 1.62 = 48 N).

Mass times Gravitational Acceleration equals weight.

Weight plus gravitational acceleration equals mass.

mass = 30N ÷ 9.8 m/s²

mass = 3.06 kg

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Answer:

The buoyant force is 9.8 N.

Explanation:

The buoyant force acting on the material is called upthrust, and can be determined as;

Upthrust = density of liquid x volume of object x gravitational force

So,

density = \(\frac{mass}{volume}\)

⇒ mass = density x volume

             = 4230 x 0.001

             = 4.23

mass of the material = 4.23 kg

But,

weight = mass x gravitational force

weight = 41.5 N, and mass = 4.23 kg, then;

41.5 = 4.23 x g

g = \(\frac{41.5}{4.23}\)

  = 9.811

g = 9.8 m/\(s^{2}\)

Upthrust = 1000 x 0.001 x 9.81

              = 9.81 N

The buoyant force is 9.8 N.

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

Answer:

tysm

Explanation:

Answer:

OMG THANK U SO MUCH I NEEDED THEMMMMM

Answer:

insulator

Explanation:

it keeps heat in not moves it

Answer:

Explanation:

The Himalayan mountain range and Tibetan plateau have formed as a result of the collision between the Indian Plate and Eurasian Plate which began 50 million years ago and continues today. 225 million years ago (Ma) India was a large island situated off the Australian coast and separated from Asia by the Tethys Ocean.