Which one of the following types of electromagnetic radiation is produced by the sudden deceleration of high speed electrons?
a.x-rays
b.microwaves
c.infrared radiation
d.visible light
e.gamma rays

Answer:

735 N

Explanation:

If a woman has mass 75kg and u know that mass is constant everywhere then just apply the formula W=mg...as gravity on earth is 9.8 m/s2 , so her weight will be 735 N...hope it helps...

If a woman has a mass of 75 kilograms then her weight on the earth would be 735.75 Newtons, because the weight of the woman is the multiplication of the mass of the woman and the acceleration due to the gravity of the earth.

It can be defined as the force by which a body attracts another body toward its center as the result of the gravitational pull of one body and another,

As given in the problem if a woman has a mass of 75 kilograms we have to find the weight of the woman,

The weight of the woman = mass of the woman × acceleration due to the gravity of the earth

                                           = 75 kilograms × 9.81

                                           =735.75 Newtons

Thus, the weight of a woman who has a mass of 75 kilograms would be 735.75 Newtons

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Magnetic force

The force of a magnet is responsible for the attraction or repulsion between two objects in a magnetic field.

The name of the force of a magnet is called magnetic force

The formula for the magnetic force (F) is given as:

F = qvBsinθ

where q is the charge of the moving particle

v is the speed of motion

B is the magnetic field strength

θ is the angle between the field and the velocityq

The hypothesis is, the thickness of transparent glass affects how much light passes through. Option A is correct.

A hypothesis is a proposed explanation or prediction for a phenomenon or observation that is based on limited evidence and subject to testing and validation through further investigation. It is an essential part of the scientific method, which involves developing a research question, making observations, and forming a hypothesis to explain the observed phenomenon.

The hypothesis should be testable, falsifiable, and based on evidence and reasoning. Testing the hypothesis involves designing experiments and collecting data, which can either support or refute the hypothesis. If the hypothesis is supported by the data, it may be further developed into a scientific theory, which is a widely accepted explanation of a natural phenomenon that has been extensively tested and validated. Option A is correct.

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An Ion carrying a charge of -1 indicates the presence of an extra electron.

Atoms are formed by the combination of protons, neutrons, and electrons. Protons and Neutrons together form the Nucleus, and the Electrons move around the Nucleus of the atoms in a shell and can vary in number.

The number of protons and electrons is the same in an atom. As the protons have a charge of +1 and electrons carry a negative charge of -1, thus the total charge of an atom is zero means an atom is electrically neutral.

But when an atom gains an extra electron from its nearby atoms or surroundings, it gains a negative charge of -1. An atom that has a positive or negative electrical charge is an Ion. Thus an ion with a -1 charge is an atom with an extra electron in its shell.

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Answer:

LT 23 don't ask how I got it

The time taken by the car to stop will be 4.53 seconds. The final velocity is zero and the initial velocity will be 86.08 ft./s.

Velocity is a vector quantity which measures distance covered per unit time. It is given that the acceleration of the car a is  19 ft/s². The distance it covered is 195 ft.

We have the expression for final velocity v initial velocity u and the time t with acceleration a as follows where the final velocity v for the car is zero.

0 = U -  at

u = at.

The relation between time, acceleration and initial velocity with distance d is written as:

d = u t - 1/2 at²

  =  at²  -1/2 at²

  = 1/2 at²

Thus, t = √(2d/a)

            = √(2×195 ft / 19 ft/s²)  

            = 4.53 s.

Initial velocity u = a t

                          = 4.53 s ×19 ft/s²

                          = 86.08 ft./s

Therefore, the initial velocity will be 86.08 ft./s.

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Answer:

Ex; If the robot traveled 20 cm around the octagon then the circle circumference = 20 cm

Use the equation circumference = 2 π radius to calculate radius(C = 2πr)

          If circumference = 20cm;  radius = circumference / ( 2 π) = 20/6.28= 3.18 cm. Use your scale to express your answer in meters, km, etc

now set the protractor distance measure as 3.18 cm, place the protractor's metal spike at the octagon center and draw the circle.

Explanation:

The coefficient of thermal conductivity (k) is related to the rate of heat flow (Q), the cross-sectional area (A), the length (L), the temperature difference (ΔT), and the thermal resistance (Rth) by the following equation:

k = Q / (A * ΔT * L) = Rth * (A * ΔT)

Reorganizing this equation gives:

Rth = k / (A * ΔT)

The given information in the problem is:

Rate of heat flow (Q) = 14.0 watts

Thermal resistance (Rth) = (350 mm × 350 mm × 15 mm) / (14.0 watts) = 31.5 mm⁴/C

Temperature difference (ΔT) = 28°C

Substituting these values into the equation, we have:

k = Q / (A * ΔT) = 14.0 W / (0.35 m² * 28°C) = 1.94 W/mK

So the coefficient of thermal conductivity (k) for this wood is approximately 1.94 W/mK.

Answer:

The answer is D (It reduced his average

force.)

a) The angle θ1 which the righthand cable makes with respect to the ceiling is  sin^(-1)(692 N / 530 N).

b) The angle θ2 which the left-hand cable makes with respect to the ceiling is  sin^(-1)(692 N / 570 N).

We may utilise the tension of the right-hand cable as well as its vertical and horizontal components to determine the angle 1. θ2 = sin^(-1)(692 N / 570 N).

We may apply the ideas of trigonometry and vector addition to address this issue.

a) The tension of the right-hand wire as well as its vertical and horizontal components can be used to determine the angle 1.

T1sin(1) calculates the vertical component of the right-hand cable's tension, which is equal to the object's weight (692 N).

T1sin(θ1) = 692 N

We may rearrange the equation to find 1:

θ1 = sin^(-1)(692 N / T1)

We can find 1 by substituting the given tension value, T1 = 530 N:

θ1 = sin^(-1)(692 N / 530 N)

b) Similarly, we can use the formula to determine the angle 2 the left-hand cable's tension and its vertical and horizontal components.

The vertical component of the left-hand cable's tension is given by T2sin(θ2), and it should also be equal to the weight of the object (692 N).

T2sin(θ2) = 692 N

To find θ2, we can rearrange the equation:

θ2 = sin^(-1)(692 N / T2)

Substituting the given tension value T2 = 570 N, we can solve for θ2:

θ2 = sin^(-1)(692 N / 570 N)

Calculating these angles using the given tension values will provide the answers in degrees.

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Answer:

Avoid using tweezers to remove the stinger, since squeezing it may release more venom. Wash the area of the bite with soap and water. Place a cold compress or ice pack on the area for about 10 minutes at a time to help reduce pain and swelling

Explanation:

so basically B, i hope this helps and its not too late!

First, remove the stinger with mild force and wash the area thoroughly with soaps. Apply cold compress or ice packs to avoid swellings. Hence, option B is correct.

Histamines are chemical substances in our body generating allergic action on skin. When some allergens or stimuli are exposed with our skin, histamine is produced.

Similarly if an insect with stinger bite on our skin, histamine is produced and allergic reactions occurs in our body. The bitten area has to be washed for minutes with soap. If any stinger persist on skin remove it.

Cold compress or ice packs are very helpful if the skin starts to swell. If any pain occurs, lower doses of pain killers can be taken. If necessary antihistamines have to be taken.

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The average blood pressure in the brain will be higher than the average blood pressure in the feet. the average blood pressure in the brain will be lower than the average blood pressure in the feet.

When the elevator accelerates upward at \(10 ms^{-2}\), the blood pressure in the brain and feet of a person changes.

Similarly, when the elevator accelerates downward with the same acceleration, the blood pressure in the brain and feet of a person changes.

Let's discuss them one by one:Blood Pressure When Elevator Accelerates Upward at \(10 ms^{-2}\)

When the elevator accelerates upward at \(10 ms^{-2}\),  the blood pressure in the brain of a person increases, while the blood pressure in the feet of a person decreases.

This happens due to the gravitational force acting on the body.

Since the gravitational force on the head is greater than the gravitational force on the feet, the blood pressure in the brain increases while the blood pressure in the feet decreases.

Therefore, the average blood pressure in the brain will be higher than the average blood pressure in the feet.

Blood Pressure When Elevator Accelerates Downward at  \(10 ms^{-2}\) When the elevator accelerates downward at \(10 ms^{-2}\), the blood pressure in the brain of a person decreases, while the blood pressure in the feet of a person increases.

This also happens due to the gravitational force acting on the body. Since the gravitational force on the head is less than the gravitational force on the feet, the blood pressure in the brain decreases while the blood pressure in the feet increases.

Therefore, the average blood pressure in the brain will be lower than the average blood pressure in the feet.

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The current (in amperes) the frying pan draws from the 500 volt circuit, given that it has a resistance of 25 ohms is 60 amperes

From the question given above, the following data were obtained:

The current drawn by the frying pan can be obtained as follow:

Voltage (V) = Current (I) × resistance (R)

Inputting the given parameters, we have:

1500 = Current × 25

Divide both sides by 25

Current = 1500 / 25

Current = 60 amperes

Thus, from the above calculation we can conclude that the current drawn by the frying pan is 60 amperes

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Answer:

Its B. Climate and temperature can affect an individual's attitude toward survival.

Explanation:

Edge 2022 got it right

A.  The motor's speed is approximately 1086 r/min if the field resistance is raised to 50 Ω.

B. The speed of this motor as a function of the field resistance RF is approximately 1086 r/min

A. According to the magnetization curve shown in Figure 8-9, the motor's speed can be calculated by using the following equation:

EA = kϕN, where EA is the back EMF, k is a constant, ϕ is the magnetic flux, and N is the motor speed.

Since the amount of armature current remains constant, the back EMF is also constant.

Therefore, the magnetic flux must also be constant. The magnetic flux is proportional to the field current IF, which can be calculated using Ohm's law:

IF = (250 V - EA)/(RF + R₁)

At the initial field resistance of 41.67 Ω, the field current is IF = (250 V - EA)/(41.67 Ω + 0.03 Ω) = (250 V - EA)/41.70 Ω.

If the field resistance is raised to 50 Ω, then the new field current is IF = (250 V - EA)/(50 Ω + 0.03 Ω) = (250 V - EA)/50.03 Ω.

Since the magnetic flux is constant, we can set the two expressions for IF equal to each other and solve for N:

kϕN/IF1 = kϕN/IF2

N = (IF2/IF1)N1 = (250 V - EA)/(50.03 Ω + 0.03 Ω) * 1103 r/min ≈ 1086 r/min

Therefore, the motor's speed is approximately 1086 r/min if the field resistance is raised to 50 Ω.

B. The speed of the motor as a function of the field resistance RF can be plotted using the same equation used in part A:

N = (250 V - EA)/(RF + R₁ + Radj) * 1103 r/min

where Radj is the resistance of any additional resistance in the circuit. Since the load current is constant, the current through the motor is also constant, so EA is also constant.

Therefore, the speed is inversely proportional to the total resistance in the circuit, which includes the field resistance RF, armature resistance R₁, and any additional resistance Radj.

A plot of the speed as a function of the field resistance is shown in Figure 8-10. As the field resistance increases, the speed of the motor decreases due to the increased total resistance in the circuit. This relationship is linear for this type of constant-current load.

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The net force on particle q2 is a positive force pointing to the right.

To determine the net force on particle q2, we need to calculate the individual forces exerted on q2 by q1 and q3 and then add them vectorially.

The force between two charged particles can be calculated using Coulomb's law, which states that the force (F) between two charged particles is directly proportional to the product of their charges (q1 and q2) and inversely proportional to the square of the distance (r) between them:

F = k * (|q1| * |q2|) / r^2

where k is the electrostatic constant.

Given:

q1 = +8.0 μC

q2 = +3.5 μC

q3 = -2.5 μC

Distance between q1 and q2 (r12) = 0.10 m

Distance between q2 and q3 (r23) = 0.15 m

First, let's calculate the force between q1 and q2:

F12 = k * (|q1| * |q2|) / r12^2

Substituting the values:

\(F12 = (9 \times 10^9 N m^2/C^2) * ((8.0 \times 10^-6 C) * (3.5 \times 10^-6 C)) / (0.10 m)^2\)

Calculating the force F12 will give us the magnitude of the force between q1 and q2. However, since q1 and q2 have the same charge sign, the force will be repulsive, pointing to the right.

Next, let's calculate the force between q2 and q3:

\(F23 = k * (|q2| * |q3|) / r_{23}^2\)

Substituting the values:

F23 = (9 x 10^9 N m^2/C^2) * ((3.5 x 10^-6 C) * (2.5 x 10^-6 C)) / (0.15 m)^2

Calculating the force F23 will give us the magnitude of the force between q2 and q3. Since q2 and q3 have opposite charge signs, the force will be attractive, pointing to the left.

To find the net force on q2, we need to subtract the force F23 from F12 since they act in opposite directions:

Net force on q2 = F12 - F23

Finally, we need to consider the direction of the forces. Since F12 is repulsive (positive) and F23 is attractive (negative), the net force on q2 will be positive, pointing to the right.

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Answer:  The speed of the other end when it hits the floor is assuming that the end at the floor does not slip is A. 3.2m/s.

Here's how we can find the speed of the other end when it hits the floor:

Step 1: We can use the equation for rotational energy to find the speed of the other end. The equation is E = 1/2 Iω², where E is the rotational energy, I is the moment of inertia, and ω is the angular velocity.

Step 2: We know that the moment of inertia for a meter stick is I = 1/3 mL², where m is the mass of the meter stick and L is the length of the meter stick.

Step 3: We also know that the rotational energy is equal to the potential energy of the meter stick at the beginning of the fall, which is E = mgh, where m is the mass of the meter stick, g is the acceleration due to gravity (9.8m/s²), and h is the height of the center of mass of the meter stick (0.5m).

Step 4: We can plug in the values for I and E into the equation for rotational energy and solve for ω.

1/2 (1/3 mL²)ω² = mgh

ω² = 6gh/L²

ω = √(6gh/L²)

Step 5: We can find the speed of the other end by multiplying the angular velocity by the length of the meter stick.

v = ωL

v = √(6gh/L²)L

v = √(6gh/L)

Step 6: We can plug in the values for g, h, and L to find the speed of the other end.

v = √(6(9.8m/s²)(0.5m)/(1m))

v = 3.2m/s

Therefore, the speed of the other end when it hits the floor is 3.2m/s. The correct answer is A. 3.2m/s.

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Answer:

Explanation:

No sound is heard , that means there is destructive interference at the place where sound is heard .

Path difference of the source of sound = 1.425 m - 1.230 m

= 0.195 m

Let frequency of sound be n .

wave length = velocity of sound at 0°C / n

λ = 330 / n

for destructive interference ,

path difference = ( 2m+1) λ /2 , where λ is wave length of sound.

0.195 m = ( 2m+1) λ /2

0.195 m = ( 2m+1)330 / 2n

2n = 1692.3 (2m+1)

If m = 0

n = 846 . which is nearest to given frequency of 993 Hz

So 993 Hz is the answer.

Answer:

Wetlands reduce flooding and erosion by filtering water.

Explanation:

Answer:

Wetlands reduce flooding and erosion by filtering water.

Explanation:

Answer:

Mendeleev Arranged it, It was arranged so that elements with the most similar properties were placed in the same group.  and the names on the groups are groups 1, 2, and 12–18. These elements are representative metals, metalloids, and nonmetals. Hope this helped

Answer:

Wave Energy and Biomass Energy sources.

Explanation:

The main sources of energy available on earth are Coal, Geothermal, Nuclear, Petroleum, Hydro,  Biomass, and Wave, from which nuclear and geothermal are resultant of radioactive materials whereas Coal and Petroleum are resultant of Fossil Fuels.

Biomass energy is produced by living organisms, for example, corn is used as biomass material, which stores energy through photosynthesis, and the photosynthesis process is only possible with Sun.

Wave energy is resultant of the sun's uneven heating of the ocean which makes tides and then the motion of the waves utilize to harness the energy.

So, the force of gravity that the asteroid and the planet have on each other approximately

\( \boxed{\sf{5.43 \times 10^{10} \: N}} \)

Hi ! Now, I will help to discuss about the gravitational force between two objects. We already know that gravitational force occurs when two or more objects interact with each other at a certain distance and generally orbit each other to their center of mass. For the gravitational force between two objects, it can be calculated using the following formula :

\( \boxed{\sf{\bold{F = G \times \frac{m_1 \times m_2}{r^2}}}} \)

With the following condition :

We know that :

What was asked :

Step by step :

\( \sf{F = G \times \frac{m_1 \times m_2}{r^2}} \)

\( \sf{F = 6.67 \times 10^{-11} \times \frac{8.4 \cdot 10^8 \times 6.2 \cdot 10^{23}}{(8 \times 10^5)^2}} \)

\( \sf{F = \frac{347.374 \times 10^{-11 + 8 + 23}}{64 \times 10^10}} \)

\( \sf{F \approx 5.43 \times 10^{20 - 10}} \)

\( \boxed{\sf{F \approx 5.43 \times 10^{10} \: N}} \)

So, the force of gravity that the asteroid and the planet have on each other approximately

\( \boxed{\sf{5.43 \times 10^{10} \: N}} \)

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Answer:

Explanation:

Potential energy stored in the spring = 25 J

This energy is converted into gravitational potential energy . If h be the height attained

gravitational potential energy = mgh

mgh = 25

.15 x 9.8 x h = 25

h = 17 m

The moment M applied to the disc to hold the system in equilibrium is 0.09 Nm.

To calculate the moment M applied to the disc that holds the system in equilibrium, we can use the principle of moments. The principle of moments states that the sum of the clockwise moments about a point is equal to the sum of the counterclockwise moments about the same point.

Let's consider point C as the pivot point. The clockwise moments are produced by the weight of BC and the unknown moment M, while the counterclockwise moments are produced by the weight of AB.

The weight of BC can be calculated as W_BC = linear density * length = 1 kg/m * 0.3 m = 0.3 kg.

The clockwise moment is given by M_clockwise = W_BC * BC = 0.3 kg * 0.3 m = 0.09 Nm.

Since the system is in equilibrium, the clockwise moments must balance the counterclockwise moments. Therefore, the counterclockwise moment produced by the weight of AB is also 0.09 Nm.

Hence, the moment M applied to the disc to hold the system in equilibrium is 0.09 Nm.

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The amount of mechanical energy stored in the spring changes by a factor of 25.

The energy stored in an elastic spring is given as;

E = ¹/₂kx²

The energy stored in an elastic spring is directly proportional to the square of the extension of the spring.

when the spring is stretched by 5 times greater, the energy stored in the spring is calculated as;

E =  ¹/₂k(5x)²

E =  ¹/₂k(25x²)

E = 25(¹/₂kx²)

Thus, the amount of mechanical energy stored in the spring changes by a factor of 25.

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The mass of Car B is -6000 kg.

To solve this problem, we can apply the principle of conservation of momentum, which states that the total momentum before the collision is equal to the total momentum after the collision.

Therefore, we can write the equation for the conservation of momentum as:

(mass of Car A * velocity of Car A) + (mass of Car B * velocity of Car B) = (mass of Car A + mass of Car B) * velocity after collision

Let's substitute the given values into the equation:

(2000 kg * 10 m/s) + (mass of Car B * 0 m/s) = (2000 kg + mass of Car B) * (-5 m/s)

Simplifying the equation:

20000 kg*m/s = -5 m/s * (2000 kg + mass of Car B)

Dividing both sides by -5 m/s:

-4000 kg = 2000 kg + mass of Car B

Subtracting 2000 kg from both sides:

mass of Car B = -4000 kg - 2000 kg

mass of Car B = -6000 kg

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Answer:

The right approach is "0.85 m".

Explanation:

According to the question, the diagram will is provided below.

So that as per the diagram,

The values will be:

My height,

AO = 1.70 m

My eyes at,

AB = 12 cm

i.e.,

     = 0.12 m

As we can see, the point of incidence lies between the feet as well as the eyes, then

BO = 1.58 m

Now,

⇒ \(O'D = \frac{1.58}{2}\)

           \(=0.79 \ m\)

The point of incidence of the ray will be:

⇒ \(CO'=1.70-\frac{0.12}{2}\)

           \(=1.70-0.06\)

           \(=1.64 \ m\)

Hence,

The smallest length of the mirror will be:

= \(CO'-O'D\)

On substituting the values, we get

= \(1.64-0.79\)

= \(0.85 \ m\)