gamma radiation is typically considered the most dangerous form of radiation because...

The effect of the factors which he can he actually find out using only this lamp to determine the size of shadow is the light intensity and type of object.

This forms part of the scientific methods and is referred to as a procedure which is used to support or refute an hypothesis.

The size of the shadow is dependent on factors such as the light intensity and the type of object. Since the lamp produces the light in which the intensity can be gotten and the type of material it is in contact with then it therefore the correct choices.

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Answer:

E=2.58155844×10^-29

Explanation:

we use this formula

E= hc/ lambda

E= [(6.626×10^-34)( 3×10^8)]/(7.7×10^-3)

E=2.58155844×10^-29

The statements best describes how a star chart should be held while facing north is, The edge of the map labeled south should be held towards the observer.

What is star chart ?

A map or diagram of the stars and other celestial bodies in the sky is called a star chart. The locations of the stars, constellations, planets, and other celestial bodies are often displayed at a certain time and location on Earth. Star maps can be used to locate celestial bodies in the night sky, to organise astronomical observations, or to track their movements through time.

Given that,

The statements,

In between following options, best describes how a star chart should be held while facing north is,

The edge of the map labeled south should be held towards the observer

This is because when facing north, the direction labeled "south" on the map should correspond to the direction of the actual south, and thus be facing the observer.

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Answer:

750J

Explanation:

Given parameters:

Mass of the object   = 0.15kg

Velocity of the object  = 100m/s

Unknown:

Kinetic energy of the body  = ?

Solution:

The kinetic energy is the energy due to the motion of a body. It is mathematically expressed as;

        K.E  = \(\frac{1}{2}\) m v²  

m is the mass of the body

v is the velocity

 Now insert the parameters and solve;

     K.E  = \(\frac{1}{2}\)  x 0.15 x 100²   = 750J

Answer:

22.1meter/min

Explanation:

Change 488s to min.

Speed= Distance÷Time

so 180m ÷ 122/15

= 22.1 (3s.f.) meter / min.

To determine the work required for each complete turn of the crank when preparing homemade ice cream with a torque of 3.95 N*m, you can follow these steps:

1. Identify the given values: torque (τ) = 3.95 N*m.
2. Remember that work (W) is calculated by multiplying the torque (τ) by the angle in radians (θ): W = τ * θ.
3. Since we want the work required for each complete turn of the crank, the angle (θ) should be in radians for a full rotation, which is 2π radians.
4. Plug the values into the equation: W = 3.95 N*m * 2π radians.

Your answer: To prepare homemade ice cream, if a crank must be turned with a torque of 3.95 N*m, the work required for each complete turn of the crank is approximately 24.83 J (joules).

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Turbulent flow is a type of fluid flow characterized by chaotic and irregular changes in pressure and velocity. It differs from laminar flow, which is a smooth, orderly flow of fluid where the fluid moves in parallel layers with minimal mixing between them.

Critical speed is the point at which the flow transitions from laminar to turbulent flow. It is typically determined using the Reynolds number, a dimensionless quantity that compares the inertial forces to the viscous forces in a fluid.

The equation for critical speed can be expressed using the Reynolds number formula:

Re = (ρVD) / μ

where Re is the Reynolds number, ρ is the fluid density, V is the flow velocity, D is the characteristic length (such as pipe diameter), and μ is the dynamic viscosity of the fluid.

For most fluids, a Reynolds number below 2,000 indicates laminar flow, while a Reynolds number above 4,000 signifies turbulent flow. The range between 2,000 and 4,000 is considered a transition zone where the flow can be unstable and fluctuate between laminar and turbulent flow.

To summarize, turbulent flow is characterized by chaotic fluid motion, while laminar flow is smooth and orderly. Critical speed represents the transition point between these two types of flow, and it can be determined using the Reynolds number equation.

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If the same pressure is exerted over a greater area, less force will result. Option A

This is because pressure is defined as force per unit area. If the area over which the pressure is exerted is increased, then the same amount of force is distributed over a larger area, resulting in a decrease in pressure.

This decrease in pressure results in a decrease in the force that is exerted.

A simple way to visualize this is to imagine pressing your hand against a wall. If you press with a small area, such as the tip of your finger, you will feel a greater force against your finger. However, if you press with the palm of your hand, which has a larger area, you will feel less force against your hand.

This principle is used in many everyday applications. For example, car tires are inflated to a certain pressure to distribute the weight of the car over a larger area, resulting in less force exerted on the road and better traction.

Similarly, snowshoes distribute the weight of a person over a larger area, allowing them to walk on top of deep snow without sinking in. So Option A is correct.

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Muscular strength refers to the amount of force that a muscle or group of muscles can generate against resistance. This can be achieved through weightlifting, resistance training, or other forms of exercise that target the muscles.

One benefit of muscular strength is improved overall physical performance, such as increased power, speed, and endurance. Another benefit is improved bone density and reduced risk of injury.

There are many different ways to work on muscular strength. One way is through weightlifting, which involves lifting weights or using weight machines to target specific muscle groups. Another way is through bodyweight exercises, such as push-ups, squats, and lunges, which use your own body weight as resistance.

Finally, cardiovascular exercise, such as running or biking, can also help improve muscular strength by building endurance and increasing overall fitness levels.

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Frequency and nzl (number of zero crossings per unit length) are inversely proportional to each other according to the formula nzl = vf, where v is the velocity of the wave and f is the frequency.

The formula for nzl (refractive index minus one) is,

nzl = (c/vl) - 1

where c is the speed of light in a vacuum, and vl is the speed of light in the medium.

Frequency is not directly related to nzl in this formula. However, the refractive index (n) of a medium can depend on frequency. This is known as dispersion, and it means that different frequencies of light may experience different refractive indices and therefore different nzl values in a given medium. In other words, the nzl value can vary depending on the frequency of the light passing through the medium.

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Answer:

Distance travelled is 7 meters and the displacement is 3 meters

Answer:

The acceleration time graph is the graph that is used to determine the change in velocity in the given interval of the time. ... The acceleration time graph is used to find the change in the velocity of the moving object for the given period of time and this can be determined by finding the area under the curve

Explanation:

During this time charlotte traveled a distance of: 395.36 ft

It is a physical quantity that indicates the displacement of a mobile per unit of time, it is expressed in units of distance per time, for example (miles/h, km/h).

The formula and procedure we will use to solve this problem is:

v= x/t

Where:

Information about the problem:

Converting the velocity from (mi/h) to (ft/s) we have:

v = 57.5 mi/h * 5280 ft/ 1 mi * 1 h/3600 s

v= 84.3 ft/s

Applying the velocity and isolating the distance we have:

x = 84.3 ft/s * 4.69 s

x = 395.36 ft

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a. The speed of block A just before it hits block B is v = √(2gR).b. The speed of the combined blocks immediately after the collision is V = v(m/(M + m)).c. The amount of kinetic energy lost due to the collision is ΔKE =\((1/2)m(v^2 - V^2)\).d. The temperature rise resulting from the collision is ΔT =\((1/2c)(v^2 - V^2)\).e. The additional thermal energy generated as the blocks move from Y to P is ΔQ = μmgI.

a. To determine the speed of block A just before it hits block B, we can consider the conservation of mechanical energy.

At point X, block A has gravitational potential energy which is converted into kinetic energy as it slides down the curved section of the track. At the bottom of the arc at point Y, all the potential energy is converted into kinetic energy.

The gravitational potential energy at point X is given by mgh, where h is the vertical distance from X to the horizontal section YZ. In this case, h = R.

The kinetic energy at point Y is given by (1/2)mv^2, where v is the speed of block A just before it hits block B.

Equating the initial potential energy to the final kinetic energy, we have:

\(mgh = (1/2)mv^2.\)

Simplifying, we find:

\(gh = (1/2)v^2.\)

Solving for v, we get:

\(v = \sqrt{(2gh).\)

b. Since the collision between block A and block B is instantaneous and inelastic, the two blocks stick together and move as a combined system.

The speed of the combined blocks immediately after the collision can be found using the principle of conservation of momentum. The initial momentum of block A is zero as it is released from rest, and the initial momentum of block B is also zero as it is initially at rest.

The final momentum of the combined blocks is the sum of the individual momenta:

(mv) + (0) = (M + m)V,

where V is the velocity of the combined blocks.

Simplifying, we find:

V = v(m/(M + m)).

c. The amount of kinetic energy lost due to the collision can be found by calculating the difference in kinetic energy before and after the collision.

The initial kinetic energy of block A is given by \((1/2)mv^2\), and the final kinetic energy of the combined blocks is given by \((1/2)(M + m)V^2\).

The kinetic energy lost is:

ΔKE = \((1/2)mv^2 - (1/2)(M + m)V^2\).

Simplifying, we find:

ΔKE =\((1/2)m(v^2 - V^2)\).

d. To determine the temperature rise resulting from the collision, we need to consider the thermal energy generated due to the collision.

The thermal energy generated is given by:

ΔQ = mcΔT,

where ΔT is the change in temperature and c is the specific heat of the material used to make the blocks.

The thermal energy generated is equal to the kinetic energy lost due to the collision:

ΔQ = ΔKE.

Substituting the expression for ΔKE from part c, we have:

mcΔT = \((1/2)m(v^2 - V^2)\).

Simplifying, we find:

ΔT = \((1/2c)(v^2 - V^2)\).

e. To determine the additional thermal energy generated as the blocks move from Y to P, we need to consider the work done against friction.

The work done against friction is given by:

W = μmgI,

where μ is the coefficient of kinetic friction, m is the mass of each block, g is the acceleration due to gravity, and I is the distance from point Y to point P.

The additional thermal energy generated is equal to the work done against friction:

ΔQ = W.

Substituting the expression for W, we have:

ΔQ = μmgI.

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Answer:

Time:

t = 12 s

Explanation:

Given:

g = 1.62 m/s

H = 120 m

V₀ =0 m/s

__________

t - ?

From the formula:

H = V₀·t + g·t² / 2

H = g·t² / 2

we find the time:

t = √ (2·H / g)

t = √ (2·120 / 1.62) ≈ 12 c

Answer:

pls mrk me brainliest

Explanation:

Hydrostatic pressure is the pressure exerted by a fluid at equilibrium at any point of time due to the force of gravity. Hydrostatic pressure is proportional to the depth measured from the surface as the weight of the fluid increases when a downward force is applied. The hydrostatic pressure at any point in a fluid can be calculated by using the formula:

P = P0 + ρgh

where P is the hydrostatic pressure, P0 is the atmospheric pressure, ρ is the density of the fluid, g is the acceleration due to gravity, and h is the depth of the point from the surface.

a) In which fluid is pressure of 610 kPa first achieved?

It can be found out by adding up the hydrostatic pressures of each layer of fluid until we reach 610 kPa. Starting from gas layer:

Pgas = 60 kPa + (1 kg/m3)(9.81 m/s2)(1 m) = 60.00981 kPa

Palcohol = Pgas + (780 kg/m3)(9.81 m/s2)(60 m) = 460.00981 kPa

Poil = Palcohol + (840 kg/m3)(9.81 m/s2)(10 m) = 542.40981 kPa

Pwater = Poil + (990 kg/m3)(9.81 m/s2)(2 m) = 561.60981 kPa

Pglycerine = Pwater + (1236 kg/m3)(9.81 m/s2)(3 m) = 605.46981 kPa

Pmolasses = Pglycerine + (1500 kg/m3)(9.81 m/s2)(10 m) = 752.96981 kPa

The pressure of 610 kPa is first achieved in glycerine layer.

b) If the bottom of the pipe is at zero elevation what is

b) If the bottom of the pipe is at zero elevation what isthe pressure at bottom in kpa?

The bottom of pipe corresponds to molasses layer so use it to calculate hydrostatic pressure as calculated above:

Pbottom = Pmolasses = 752.96981 kPa

c) At what elevation is pressure of 640kpa?

It can be found out by subtracting hydrostatic pressures from each layer until it reach below 640kpa and then use interpolation to find exact elevation.

Starting from molasses layer:

Pmolasses - Pglycerine= (752.96981 - 605.46981)kpa=147.5kpa

This means that somewhere between glycerine and molasses layers there is a point with pressure of 640kpa.

Let x be distance from top surface of molasses layer to this point then:

640kpa=605.4698+1500(9.8)x

x=0.023m

Therefore elevation from bottom surface of pipe to this point is:

10-0-0-023=9-977m

d) If an open manometer attached to side pipe anywhere on oily portion determine height liquid level manometer.

An open manometer measures difference between atmospheric pressure and fluid pressure inside pipe.

Let y be height liquid level manometer above oil level then:

Patm-Poil=yρg

y=(Poil-Patm)/ρg

y=(542-4098-101325)/(1000*9-8)

y=-44-6m

This means that liquid level manometer will be below oil level by -44-6m or oil level will be above liquid level manometer by +44-6m.

Jane's rate along the summit was 25 mph.

Let's assume that Jane's rate along the summit is represented by the variable "x" in miles per hour. We know that she rode 72 miles uphill at a rate that was 5 mph slower than her rate along the summit. Therefore, her rate uphill would be (x - 5) mph.

To find her average rate for the entire journey, we can calculate the total time taken for each segment and divide it by the total distance covered.

Time taken to ride uphill = Distance / Rate

Time taken to ride uphill = 72 miles / (x - 5) mph

Time taken to ride along the summit = Distance / Rate

Time taken to ride along the summit = 21 miles / x mph

Since the total time taken for the entire journey is 3 hours, we can write the equation:

Time taken to ride uphill + Time taken to ride along the summit = Total time

72 / (x - 5) + 21 / x = 3

By solving this equation, we find that x = 25 mph. Therefore, Jane's rate along the summit was 25 mph.

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Answer:

A national park is one such protected area for the special species of flora and fauna of the region. In Nepal, there are numerous national parks to conserve and protect wildlife and their natural habitat.

Answer:

There are four main types of communication we use on a daily basis: Verbal, nonverbal, written and visual.

Explanation:

1. Verbal communication is the use of language to transfer information through speaking or sign language. It is one of the most common types, often used during presentations, video conferences and phone calls, meetings and one-on-one conversations. Verbal communication is important because it is efficient.  2. Nonverbal communication is the use of body language, gestures and facial expressions to convey information to others. It can be used both intentionally and unintentionally.Nonverbal communication is helpful when trying to understand others’ thoughts and feelings.  3. Written communication is the act of writing, typing or printing symbols like letters and numbers to convey information. It is helpful because it provides a record of information for reference. Writing is commonly used to share information through books, pamphlets, blogs, letters, memos and more. 4. Visual communication is the act of using photographs, art, drawings, sketches, charts and graphs to convey information. Because people have different learning styles, visual communication might be more helpful for some to consume ideas and information.

The bent wire circuit shown in the figure is in a region of space with a uniform magnetic field in the +z direction. Current flows through the circuit in the direction indicated. segments 2 and 5 are oriented parallel to the z-axis; the other pieces are parallel to either the x or y-axis.

The direction of the magnetic force along segment 1, which carries current in the -x direction is +y. Therefore, the answer is

b) Determine the direction of the magnetic force along segment 2, which carries current in the -z-direction. The magnetic field lines are at right angles to the direction of the current flow, so the direction of the magnetic field is in the +y direction. The current flow in segment 2 is in the -z direction and so the direction of the magnetic force is in the +x direction. Fleming's left-hand rule can be used to determine the direction of the magnetic force acting on the wire segments. The thumb points in the direction of the current, and the index finger points in the direction of the magnetic field. The direction of the magnetic force along segment 3, which carries current in the +y direction is in the +x direction.

Therefore, the answer is d) Determine the direction of the magnetic force along segment 4, which carries current in the +x direction. The direction of the magnetic force along segment 4, which carries current in the +x direction is in the +y direction.

Therefore, the answer is a) Determine the direction of the magnetic force along segment 1, which carries current in the -x direction is +y. The direction of the magnetic force along segment 6, which carries current in the +x direction is in the +z direction.

Therefore, the answer is e) Determine the direction of the magnetic force along segment 5, which carries current in the +z direction in the -x direction. The direction of the magnetic force along segment 7, which carries current in the -y direction is in the -x direction.

Therefore, the answer is f) Determine the direction of the magnetic force along segment 6, which carries current in the +x direction in the -y direction.

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125 J the kinetic energy possessed by a bullet of mass 10 Kg moving at a velocity of 25m/s.

Kinetic energy, which may be seen in the motion of an object, particle, or group of particles, is the electricity of motion. Any moving item uses kinetic energy, such as a person who walks, a baseball being thrown, a piece of food falling from a table, or a charged particle inside an electric field.

The capacity to perform work is unquestionably the most important characteristic of kinetic energy. Force acting on to an object while it is moving is referred to as work. Energy and work are convertible because of their tight relationship.

The kinetic energy of a body is

K.E. = 1/2 mv²

K.E. = 1/2 ×10 ×25

K.E. = 125 J

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The magnitude of current when a flat coil of wire consisting of 480 turns each with an  area of 70 cm, is positioned perpendicularly to a uniform magnetic field that increases its magnitude at a constant rate from -0.8 t to -0.75 t in 7.7 s. if the coil has a total resistance of 86  is 0.025 A.

Given that magnetic flux is expressed as = NBA in this situation,

we know that N = number of turns and B = magnetic field.

We now know that the rate of change in magnetic flux will cause EMF in the coil, hence A = area of the loop.

EMF = NBA db/dt

Now, enter all variables to calculate the induced

EMF: (480)(70 * 10-2). [(-0.75) -(-0.8)]

According to Ohm's rule, current equals EMF divided by resistance, hence I = 2.18/86

I = 0.025 A

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Answer:

True

Explanation:

true, batted balls that first contact the field between home plate and first or third base are considered fair if they subsequently bounce over or directly contact either base, or otherwise pass either base while in fair territory. that's what the mlb glossary says, at least.

The distance, s, travelled by the car is 66 m.

The distance travelled by the toy car is calculated using the formula below:

Where:

Distance, s = 5.0 * 6.0 +  2.0 * 6.0²/2

Distance,  s = 66 m

In conclusion, the distance travelled is calculated from the initial velocity, the time taken, as well as the acceleration.

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During the human ovarian cycle, ovulation is stimulated by d. an increase in LH (luteinizing hormone) secretion. This increase, known as the LH surge, triggers the release of a mature egg from the ovary, allowing for the possibility of fertilization.

During the human ovarian cycle, ovulation is stimulated by an increase in LH secretion. This surge in LH secretion causes the follicle to rupture and release the mature egg. It is important to note that FSH (follicle-stimulating hormone) plays a role in follicle development and estrogen production leading up to ovulation, but it is the surge in LH that triggers the actual release of the egg.

                                    Progesterone secretion increases after ovulation and helps prepare the uterus for potential implantation of a fertilized egg. Estradiol concentration fluctuates throughout the cycle, with high levels leading up to ovulation and lower levels after ovulation.

During the human ovarian cycle, ovulation is stimulated by d. an increase in LH (luteinizing hormone) secretion. This increase, known as the LH surge, triggers the release of a mature egg from the ovary, allowing for the possibility of fertilization.

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Answer:

B Raise the object farther off the ground

We may be certain that an item is in equilibrium if we know the total force acting on it is zero. This statement is true.

If the sum of the forces acting on an object is zero, then we can say for sure that the object is in equilibrium. This is because the state of equilibrium is defined as the condition in which the net force acting on an object is zero.

When there is no net force acting on an object, it means that the forces acting in opposite directions are balanced and cancel each other out. As a result, the object does not accelerate in any direction, and it remains at rest or continues to move at a constant velocity in a straight line.

However, it is important to note that this only applies to the case of a static equilibrium, where the object is at rest. In the case of dynamic equilibrium, where the object is moving at a constant velocity, the net force acting on the object may not be zero but rather balanced by an equal and opposite force, such as friction.

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Answer:

a

Explanation:

I think bec. I am in small school