If the detector is capturing 3. 2×10^8 photons per second at this wavelength, what is the total energy of the photons detected in one hour?.

Option D: -2 m/s² west is an example of acceleration.

Acceleration is the rate of change of velocity with respect to time. It is a vector quantity and can be positive or negative depending on the direction of the change in velocity.

Option D is an example of acceleration because it includes both the magnitude (-2 m/s²) and direction (west) of the change in velocity. The negative sign indicates that the velocity is decreasing, and the direction (west) indicates the direction of the change in velocity.

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These bands encircle the mid-ocean ridges. The magnetic polarity was discovered by scientists to be normal at the mid-Ocean ridge but flipped in symmetrical patterns further from the ridge center. This brings up a crucial concept: a mechanism is generating seafloor at the ridge crest. The older seafloor is vanishing in some way.

When the magma is cooling, the Earth's magnetic field controls the particular magnetism of basalt rock. The identical mechanism, according to scientists, produced perfectly matching stripes on either side of a mid-ocean ridge. The stripes were consistently divided in an orderly fashion by the spreading of the seafloor. At the ridges, rocks form from lava and physically record the Earth's magnetic field at the time of their formation. These typical striations.

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Answer:

The option your looking for is C- Mars and Venus have similar atmospheres

Answer:

C: Mars and Venus have similar atmospheres.

If protons move in the direction of the electric field, the electric potential would change, and it decreases, but if you move opposite the field, the potential energy increases.

If the field is directed from lower potential to higher then the direction is taken to be positive. If the field is directed from higher potential to lower potential then the direction is taken as negative. Potential energy can be converted to kinetic energy and vice versa.

Potential energy is the stored energy in any object or system by virtue of its position or arrangement of parts. However, it isn't affected by the environment outside of the object or system, such as air or height.

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Answer:

.004 Hz

Explanation:

Frequeny is cycles per second. An oscillation is 1 cycle

F=cycles/sec

4/100

=0.004Hz (Hz- Hertz=1 cycle/sec)

Answer:

they don't, if you get hit in the face then the brackets are gonna rub up against the inside of your mouth then you'll bleed

Explanation:

The statement is True. according to scientists, The Great Salt Lake could go dry in the next five years.

The term "Great Salt" is not a recognized term in physics, and it is unclear what is meant by it. However, if you are referring to the Great Salt Lake, then it is a large saltwater lake located in Utah, USA. As a physical entity, the Great Salt Lake has several interesting properties due to its high salinity.

For example, it is denser than freshwater and can therefore support heavier objects. Its high salt content also lowers the freezing point of water, which means that the lake's surface remains liquid even in extremely cold temperatures. These properties have practical applications, such as for the extraction of minerals from the lakebed and the testing of buoyancy and flotation devices.

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Answer: Second law of thermodynamics is very important because it talks about entropy and  'entropy dictates whether or not a process or a reaction is going to be spontaneous'.

Explanation:

Question 1

T=2*pi*sqrt(m/k) 

dimension of T=sec

dimension of 2*pi=nil(dimensionless)

dimension of m=kg

equation dimension

sec=sqrt(kg/k)

sec^2=kg/k

k=kg/sec^2

so dimension of k will be 

MT^(-2) 

dimension of N/m=kgms^(-2)/m=kgs^(-2) so it is same 

Question 2

F=Gm1*m2/r^2

Dimension of F=MLT^(-2)

MLT^(-2)=G*M*M/L^2

G=ML^3T^(-2)/M^2=M^(-1)L^(3)T^(-2)

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Firefighter can hit with water while standing at distance of 153 m from building.

The projectile travels the path with a parabolic trajectory due to the effect of gravity. No horizontal forces so there is no horizontal acceleration.

The velocity of a projectile has horizontal component and the vertical component.

The vertical component of the velocity, \(\displaystyle V_y = Vsin\theta\)

The horizontal component of the velocity, \(\displaystyle V_x = Vcos\theta\)

Given the angle θ with the X- axis = 40°

The velocity of the stream V = 39 m/s

The Y component of the velocity, Vy = 39× sin 40°

Vy = 25.1 m/s

The X component of the velocity, Vx = 39× cos 40°

Vx = 29.88 m/s

The time , t = Vy/g = 25.2/9.8 = 2.56 sec

The distance from the building, \(x = V_x\times 2t\)

x = 29.88 ×2×2.56

x = 153 m

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Answer:

Is A. auditory nerve to brain to eardrum

Explanation:

:)

Hope is right

Answer: D. thousands to millions of years

Explanation: Stages within a rock's cycle cannot happen quickly. The formation and deterioration can take thousands to millions of years to occur.

I hope this helps!

Good luck <3

Answer:

t = 0 1.697 seconds

Explanation:

Comment

This is a standard question where the time is the same for both the vertical distance the ball has to drop and the time it takes to go horizontally.

Formulas

dv = vi*t + 1/2 a t^2

dv is the vertical distance that the ball has to travel in a downward direction

dh = vh * t

Givens

a = 9.81

dv = 1.44

vi = 0

t = ?

dh = 2 m

t = same as above (but not given)

Solution

dv = 1/2 a * t^2

1.44 = 1/2 * 9.81 *t^2                 Multiply by 2

2*1.44 = 1/2 * 2 * t^2

2.88 = t^2

t = 1.697 seconds

Note that you do not have to use the horizontal information to get the time. You only have to realize that the ball has no vertical velocity to begin with.

Potential energy, PE = 0, 4, 8 and 12 at level 1, 2, 3, 4 respectively.

At Level 5, potential energy = 0 and Kinetic energy = 24 J.

Potential energy is the energy a body has by virtue of its position or state.

The formula for calculating the potentials energy of a body is given as:

where m = mass of the body

g = acceleration due to gravity

h = height

Kinetic energy is the the energy a body has by virtue of its motion.

The formula for calculating kinetic energy of a body is given as:

The sum of the kinetic energy and potential energy of a body is constant.

Assume the ball has unit mass; m = 1

g = 10 m/s^2

At the top, total energy of the body = 16 + 8 = 24J

Calculating the gain in height for each step:

At Level 4, PE = 16 J

mgh = 16 J

1 × 10 × h = 16

h = 16/10

h = 1.6 m

Since there are four steps, each step will have a height increase = 1.6/4 = 0.4

At Level 1, h = 0

PE = 0 × 1 × 10

PE = 0 J

At Level 2, h = 0.4 m

PE = 0.4 × 1 × 10

PE = 4 J

At Level 3, h = 0.8 m

PE = 0.8 × 1 × 10

PE = 8 J

At Level 5, PE + KE = 24 J

Since PE = 0

KE = 24

Therefore, potential energy, PE = 0, 4, 8 and 12 at level 1, 2, 3, 4 respectively.

At Level 5, potential energy = 0 and Kinetic energy = 24 J.

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The absence of external force in the outer space, allows the piece of rock to continue moving at the same velocity for thousands of years.

The outer space is almost an absolute vacuum, because it's nearly empty. There is no matter such as air in the outer space that will provide an external force needed to change the velocity of the piece of rock.

From Newton's first law of motion, an object in a state of rest or uniform motion in a straight line, will continue in that state unless it is acted upon by an external force.

Thus, the absence of external force in the outer space, allows the piece of rock to continue moving at the same velocity for thousands of years.

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Answer:

inertia

Explanation:

The activity of the source in Becquerel is 333.3Bq

The number of nuclei that disintegrate or decay per unit time is known as Activity.

Given that a sample of radioactive material emits 400000 particles over a period of 20 minutes.

Activity A = dN/dt

A = 400000 / 1200

A = 333.3 particles / s

A = 333.3 Bq

Therefore,

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Answer:

A

Explanation: The hotter things get the more thermal energy they have

Also don't ever take pictures like this again

Answer:A

Explanation:

1  kg of boiling water is hot enough to melt a block of ice more quickly

Answer:

hanbebdgsgzjbzbsijxbzyuxhzhbz

Explanation:

auhsbsbgsyuahsiixhwgs6

The circuit has a constant gain of 1 for high frequencies, implying that it acts as a low-pass filter. To find the frequency response function H(w) for the given circuit, we need to determine the transfer function H(w) = V0(w) / Vi(w), where V0(w) is the output voltage and Vi(w) is the input voltage in the frequency domain.

L = 1 H (inductance)

R = 3.9 KΩ (resistance)

The circuit can be represented by the following equation:

H(w) = (jwL + R) / (jwL + R + 1)

To sketch the magnitude of the frequency response function H(w), we need to plot the magnitude |H(w)| as a function of frequency w.

Taking the magnitude of the transfer function, we have:

|H(w)| = |(jwL + R) / (jwL + R + 1)|

Next, let's analyze the type of ideal filter approximated by this circuit. We can examine the transfer function to determine the filter characteristics.

From the transfer function:

H(w) = (jwL + R) / (jwL + R + 1)

As w approaches infinity, the jwL term dominates the transfer function, and the transfer function becomes:

H(w) ≈ jwL / jwL = 1

This indicates that the circuit has a constant gain of 1 for high frequencies, implying that it acts as a low-pass filter. It allows low-frequency signals to pass through relatively unattenuated while attenuating high-frequency signals.

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Solution :

It is given that JeLysa Hanson went for a medical examination complaining shortness of breath and tightness in her chest. After the medical examination, she was diagnosed of a musculoskeletal pain that was due to the overexertion while practicing her new hobby of boxing.

Therefore the codes of her examinations are :

ICD Code :

\($R06.02$\) = shortness of breath

\($R07.89$\) = chest pain or chest tightness

\($M79.1$\) = musculoskeletal pain

\($X50.3XXS$\) = overexertion due to the repetitive body movement

The probability density function of X is plotted for a=1/2 and a=2.

The expected value of X (E[X]) is determined.

The expected value of 1/X (E[1/X]) is determined.

The variance of X (V[X]) is determined.

The median of X is determined.

When a=1/2, the probability density function of X is given by p(X=x∣a)=((1/2)+1)x(1/2)^0=(3/2)x for x∈[0,1]. When a=2, the probability density function becomes p(X=x∣a)=(2+1)x^2=3x^2 for x∈[0,1]. To plot the probability density function, we can assign different values of x within the range [0,1], calculate the corresponding probabilities using the given formulas, and plot the points on a graph.

The expected value of X (E[X]) is calculated by integrating the product of X and its probability density function over the range [0,1]. For a=1/2, E[X] = ∫(x * (3/2)x) dx from 0 to 1. For a=2, E[X] = ∫(x * 3x^2) dx from 0 to 1. By evaluating these integrals, we can determine the expected values.

The expected value of 1/X (E[1/X]) is calculated similarly to E[X], but instead of integrating X, we integrate 1/X using the respective probability density functions for different values of a.

The variance of X (V[X]) can be computed by taking the second moment of X (E[X^2]) minus the square of the first moment (E[X]) squared. V[X] = E[X^2] - (E[X])^2. By calculating E[X^2] using the probability density function and the expected values obtained in step 2, we can determine the variances for different values of a.

The median of X is the value of X such that the cumulative distribution function (CDF) is equal to 0.5. To find the median, we integrate the probability density function from 0 to the median value and set it equal to 0.5. Solving for the median provides its value in terms of the parameter a.

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For this ninth planet, astronomers would most likely assume that: it originated in another star system and was gravitationally captured.

A solar system is a collection of both outer and inner planetary (astronomical) bodies alongside the Moon that usually orbit around the Sun, in slightly elliptical orbits.  

Based on astronomical science, there are nine (9) planets in the solar system and these are;

Astronomers would most likely assume that a planet that orbited the Sun in an opposite direction in contrast to the other planets, originated in another star system and was gravitationally captured.

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The formula to calculate the utilization of the second activity in a push system can be determined by dividing the total time spent on the second activity by the total time available.

In a push system, activities or tasks are performed sequentially, and the completion of one activity triggers the start of the next activity. The utilization of activity refers to the proportion of time that the activity is being used or occupied.

To calculate the utilization of the second activity in a push system, we need to determine the total time spent on the second activity and divide it by the total time available. The formula can be expressed as:

Utilization of Second Activity = (Time spent on Second Activity / Total Time Available) * 100

The time spent on the second activity refers to the duration or amount of time required to complete that specific activity. The total time available represents the total duration or available time for the entire process or system.

By using this formula, we can determine the utilization of the second activity, which provides insight into how efficiently the activity is being utilized within the overall system.

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The t-component of the force can be determined by multiplying the tension by the sine of the same angle, or by using the formula

t-component = Tension * sin(θ) = 900 N * sin(arctan(2.7/5.1)).

Given that the cable tension is 900 N and the distances from point A to the pivot O (OA) and point B to the pivot O (OB) are 2.7 m and 5.1 m, respectively, the normal (n) and tangential (t) components of the force acting on point A can be calculated. The n-component of the force can be found by multiplying the tension by the cosine of the angle between the cable and the vertical line passing through point A. The t-component of the force can be determined by multiplying the tension by the sine of the same angle.

To find the n-component of the force acting on point A, we need to determine the angle between the cable and the vertical line passing through point A. Using trigonometry, we can calculate this angle as the arctangent of OA/OB:

θ = arctan(OA/OB) = arctan(2.7/5.1).

Next, we can calculate the n-component of the force as the tension multiplied by the cosine of θ:

n-component = Tension * cos(θ) = 900 N * cos(arctan(2.7/5.1)).

To find the t-component of the force, we multiply the tension by the sine of θ:

t-component = Tension * sin(θ) = 900 N * sin(arctan(2.7/5.1)).

Substituting the values and evaluating the trigonometric functions, we can determine the n- and t-components of the force acting on point A of the bar.

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Answer:

and then...

Explanation:

..............

Answer:

Solution given:

No of waves[N] =20crests & 20 troughs

=20waves

Time[T]=4seconds

distance[d]=3cm=0.03m

Now

Wave length=3cm=3 × \( {10}^{ - 2}m \)

Frequency=\( \frac{No of waves}{time}\)

=\( \frac{20}{4} \)=5Hertz

and

Wave speed:wave length×frequency=3 × \( {10}^{ - 2}m \)×5=1.5 × \( {10}^{ - 1} \tt{ {ms}^{ - 1}} \).

A force sensor is a device used to measure force or weight. Force sensors are commonly used in a wide range of applications, including scientific experiments, industrial processes, and athletic training.

It is not possible to pull on a partner's force sensor without the force sensor pulling back. This is because of the basic principles of physics, specifically Newton's third law of motion, which states that for every action, there is an equal and opposite reaction. In other words, when a force is applied to an object, the object will respond with an equal and opposite force.

In the case of a force sensor, if you try to pull on the sensor, the sensor will respond by applying an equal and opposite force back to you. This is what makes the force sensor work; it measures the force applied to it and then provides a measurement of that force in response.

In conclusion, it is not possible to pull on a partner's force sensor without the force sensor pulling back. This is due to the basic principles of physics and the fact that a force sensor measures force by responding with an equal and opposite force to the one being applied to it.

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The international space station orbits the earth at about 27,578 kilometers every hour this an example of Speed.

Speed  can be described as the rate of change of position of an object in any direction however the Speed  can be described as the  measured as the ratio of distance to the time in which the distance was covered.

It should be noted that Speed is a scalar quantity as it has only direction and no magnitude which makes it to be different from velocity.

Therefore, option A is correct.

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missing options:

Speed. Velocity. Acceleration.