Suppose a pendulum clock has been calibrated to be accurate in San Francisco, where g = 9.800 m/s2 . In Camrose, g = 9.811 m/s2 is slightly larger due to the effect of Earth’s rotation at a higher latitude. Explain why the clock will either run perfectly, run too quickly, or run too slowly in Camrose.

Answer:

B. 57.4 N horizontal (right)

Explanation:

using cos method:

\(cos(35) = \frac{vertical force}{100}\)

\(vertical force = 57.4 N\)

As its vertical, the direction of this force should be up.

Answer:

about 1.48 grams

Explanation: None

Answer:

I believe the answer is 16.404.

Explanation:

I used a calculator.

Answer:

Feature influence of video is frame rate color.

Feature influence of audio is bit depth resolution and sampling rate.

Explanation:

Given that,

Match each feature to whether it influences audio or video quality.

We know that,

Feature influence of audio :

Bit depth resolution :

Bit depth is define the number of bits of information of the samples.

It is directly match to the resolution of each sample.

Sampling Rate :

Sampling rate of the audio should be 12000 Hz, minimum to reconstruct the sound wave of highest frequency.

Sampling rate is the define of the number of sample per second.

Feature influence of video :

Frame Rate color :

Frame rate is the amount of single video frames. Which is captures per second by our digital camera. Frame rate is in a some different standards forms 24fps, 25fps, 30fps, 60fps, and 120fps.

Hence, Feature influence of video  is frame rate color

Feature influence of audio is bit depth resolution and sampling rate.

Answer:

t=1/4v1

Explanation:

Given data

Car one

Speed =v1

Time =t

Distance =1/4 mile

Given data

Car two

Speed =v1/2

Time =t

Distance =d

Speed =distance/time

v1=1/4/t

v1t=1/4

t=1/4*1/v1

t=1/4v1 seconds

Answer:

system

Explanation:

they are all put together as one, and they are a group

The diagram you are referring to demonstrates the various Lunar phases as the Moon orbits Earth. To identify the numbered position representing the first quarter moon, let's understand the different lunar phases.

The primary lunar phases are:

1. New Moon
2. First Quarter
3. Full Moon
4. Last Quarter

These phases occur as the Moon orbits Earth, with the illuminated side of the Moon (the side facing the Sun) changing based on its position relative to Earth.

In the case of the first quarter moon, it occurs when the Moon has completed one-quarter of its orbit around Earth since the new moon. During this phase, half of the Moon's illuminated side is visible from Earth, making it appear as a semicircle in the sky.

Now, let's consider the numbered positions in the diagram:

1. New Moon - Moon is between Earth and the Sun, and its illuminated side is facing away from Earth.
2. Waxing Crescent - A small part of the illuminated side is visible, as the Moon moves away from the New Moon position.
3. First Quarter - The Moon has completed one-quarter of its orbit, and half of the illuminated side is visible from Earth.
4-7. Waxing Gibbous, Full Moon, Waning Gibbous, and Last Quarter - Other positions/phases as the Moon continues its orbit.
8. Waning Crescent - The Moon is almost back to its New Moon position.

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When a white dwarf cools and stops emitting light, it undergoes a transformation known as a black dwarf.

A white dwarf is the remnant core of a low to medium-mass star that has exhausted its nuclear fuel. Initially, it is hot and radiates intense thermal energy, mainly in the form of visible light.

Over an extremely long timescale, on the order of trillions of years, a white dwarf gradually loses its heat and fades away. As it cools down, it transitions into a black dwarf, which is essentially a cold, dark stellar remnant. A black dwarf lacks the necessary energy to sustain any nuclear fusion or emit significant amounts of light.

However, it is important to note that the universe is currently not old enough for any white dwarf to have reached the black dwarf stage. The estimated age of the universe is around 13.8 billion years, while the process of a white dwarf cooling to become a black dwarf takes many orders of magnitude longer.

Therefore, at present, black dwarfs are purely theoretical objects, as none are expected to exist yet due to the vast timescales involved.

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Image distance is approximately 39.35 cm from the lens center. Magnification is approximately 2.4 times, making the image larger.

A convergent lens, also known as a convex lens, has a focal length of 27.8 cm, and the object distance is 16.4 cm.

To find the image distance, you can use the lens formula: (1/f) = (1/\(d_o\)) + (1/\(d_i\)), where f is the focal length, \(d_o\) is the object distance, and \(d_i\) is the image distance.

By plugging in the values, you can solve for \(d_i\), which is approximately 39.35 cm from the center of the lens.

To find the magnification, use the formula: magnification = -\(d_i\)/\(d_o\), which results in approximately 2.4 times, making the image larger.

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Answer:

–0.11 N.

Explanation:

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

Mass (m) = 6.1 g

Initial velocity (u) = 350 m/s

Time (t) = 0.32 mins

Final velocity (v) = 0 m/s

Force (F) =?

Next, we shall convert 0.32 mins to seconds. This can be obtained as follow:

1 min = 60 s

Therefore,

0.32 mins = 0.32 × 60 = 19.2 s

Next, we shall determine the acceleration of the the bullet. This can be obtained as follow:

Initial velocity (u) = 350 m/s

Time (t) = 19.2 s

Final velocity (v) = 0 m/s

v = u + at

0 = 350 + (a × 19.2)

0 = 350 + 19.2a

Collect like terms

0 – 350 = 19.2a

–350 = 19.2a

Divide both side by 19.2

a = –350 / 19.2

a = –18.23 m/s²

Next, we shall convert 6.1 g to Kg.

1000 g = 1 Kg

Therefore,

6.1 g = 6.1 g × 1 Kg / 1000 g

6.1 g = 0.0061 Kg

Finally, we shall determine the force. This can be obtained as follow:

Mass (m) = 0.0061 Kg

Acceleration (a) = –18.23 m/s²

Force (F) =?

F = ma

F = 0.0061 × –18.23

F = –0.11 N

NOTE: The negative sign indicates that the force is in opposite direction.

Answer:

–0.11 N.

Explanation:

Hope this helps

Answer:

The earth has more gravity so that means if you jump out of a plane without a parachute u will die. But the moon has less gravity so u will not die when hit ground. But someone can probally explain it better than me.

More gravity equals more speed in some cases like falling

Answer:

The substance of the physical world; anything that occupies space or has substance. An organized way of scientists to gather and pursue scientific knowledge. Consists of three main components: Hypothesis, Observation, and Experimentation. One of the main components of the Scientific method.

Explanation:

Answer:

answer = 23 uF

Answer:

highest- magnanent lowest- plastic

Answer:

1200

Explanation:

f=ma

f_ force

m_ mass

a_ acceleration

Answer:

Power divided by velocity is force.

Explanation:

Ignore the guy above htey just want points he will proboly be banned soon anyways yourwelcome!

Answer:

B.) decreased attention span

Explanation:

took the test and got 100%

When measuring the distance between two telephone poles with a steel tape on a very hot day, the tape will be exposed to high temperatures.

Steel tapes expand when exposed to heat due to thermal expansion, which is the tendency of materials to expand when heated and contract when cooled.

The amount of expansion depends on the temperature difference between the tape and its reference temperature, the length of the tape, and the material of the tape.

The longer the tape and the greater the temperature difference, the greater the expansion of the tape.

As a result, the measured distance between the two poles will be longer than the actual distance.

This means that the correct answer is option B, "a bit long".

To obtain accurate results when making precise measurements with a steel tape, it is essential to account for temperature variations by using correction factors or measuring at a reference temperature.

This is especially important when measuring over long distances or when high precision is required.

Failing to account for temperature variations can result in errors that can accumulate over time and compromise the accuracy of the measurement.

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Answer:

Time (minutes) A B

0 48 2

1 43 7

2 42 8

3 35 15

4 30 20

5 23 30

6 17 23

7 19 31

8 14 36

9 10 40

10 9 41

11 11 39

12 5 45

13 11 39

14 10 40

15 8 42

Explanation:

plato

They have a limited supply in nature, therefore if they are used excessively, they will become exhausted.

Today, we recognise that using fossil fuels has a negative impact on the environment. Fossil fuels produce and utilise local pollutants, and their continued use permanently alters the temperature of our entire world.

Wastes from combustion sources are those that result from carbon pollution (i.e., coal, oil, natural gas). Included in this are all ash and particles taken out of the flue gas.

The fossile fuel is limited in nature. So, it should not waste energy from fossil fuels.

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If we maintain the percent error in gexp constant, the ratio Δgexp/gexp should rise as l falls and fall as l rises. It implies that the experimental prediction of g is more sensitive to variations in string length for shorter lengths than longer lengths.

To compare the calculated uncertainty in gexp for the shortest and longest values of l to the percent error in gexp, we need to refer to the lab manual for the derivation of uncertainty in g. Let's assume that the lab manual provides the following formula for the uncertainty in g:

Δg = \((2π/T^2)\) * ΔT

where T is the period of oscillation, ΔT is the uncertainty in T, and Δg is the uncertainty in the acceleration due to gravity (g).

Now, let's consider the effect of the length of the string on the experimental prediction. From the formula for the period of oscillation of a simple pendulum, we know that:

T = 2π√(l/g)

where l is the length of the string and g is the acceleration due to gravity.

If we differentiate this equation with respect to l, we get:

dT/dl = π/(gT√(l/g))

Using this equation and the formula for the uncertainty in g, we can derive the uncertainty in T due to the uncertainty in l:

ΔT = \((T^2/(4π^2*l))\) * Δl

Substituting this expression for ΔT into the formula for the uncertainty in g, we get:

Δg = \((2π^2/(T^3*l))\) * Δl

Now, let's consider the shortest and longest values of l. If we assume that the percent error in gexp is the same for both values of l, then we can write:

Δg/gexp = Δl/l

Therefore, we can compare the calculated uncertainty in gexp for the shortest and longest values of l to the percent error in gexp by comparing the ratios Δgexp/gexp and Δl/l for the two values of l.

If we assume that the uncertainty in l is the same for both values, then the ratio Δl/l is the same for both values. Therefore, any difference in the ratio Δgexp/gexp between the two values of l must be due to the effect of l on the experimental prediction.

From the formula for the uncertainty in gexp, we can see that Δgexp is inversely proportional to \(T^3\) and l.

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Answer:

Explanation:

the victims cell phone

Answer: They orbit the galactic center with many different inclinations, while disk stars all orbit in nearly the same plane. ... They have vertical motions out of the plane, making them appear to bob up and down, but they never get "too far" from the disk.

Explanation:

Both the hoop and the disk have the same potential energy at the top of the incline. When they start rolling down, their potential energy is converted into kinetic energy, both translational and rotational.

The rotational kinetic energy depends on the moment of inertia of the object and its angular velocity, while the translational kinetic energy depends on the object's mass and linear velocity.

The moment of inertia of a hoop is larger than that of a disk of the same mass and radius, because more of its mass is concentrated at a larger distance from the center of rotation. Therefore, the hoop has a larger rotational kinetic energy than the disk, for the same angular velocity.

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Answer:

Explanation:

When a space ship is accelerating in space, there is a force known as Inertia that kicks in. Inertia will mirror the effects of gravity on the ship even if there is no gravitational field effect such that anything that would happen where there is gravity, would continue to happen.

This means that apples will fall from trees, people's feet will touch the ground, sky divers will be pulled downwards and balls will bend downwards when thrown as well. These are the same effects expected on earth where gravity pulls things towards the earth's core.

Answer:

B,C,D,E

apples falling from trees

people’s feet touching the ground

sky divers moving toward the ground  

balls bending downward after being thrown

correct on EDGE2021

The longest wavelength of light that will produce photoelectrons from potassium is approximately 310 nm.

This wavelength corresponds to the threshold energy required to overcome the work function of potassium and release electrons via the photoelectric effect. The photoelectric effect occurs when photons of light strike a material, causing the ejection of electrons. The minimum energy required to liberate electrons is determined by the work function of the material. For potassium, the work function is around 2.24 eV. By converting this energy to wavelength using the formula E = hc/λ (where E is energy, h is Planck's constant, c is the speed of light, and λ is the wavelength), we find that the longest wavelength is approximately 310 nm. At wavelengths longer than this, the energy of the photons is insufficient to produce photoelectrons from potassium.

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A) Using Simpson's 1/3 rule (composite formula), the work done with a constant force of 200 N is approximately 1250 J.

B) Using the MATLAB function trapz, the work done is approximately 7750 J.

Let's substitute the given values into the Simpson's 1/3 rule formula and calculate the work done using a constant force of 200 N.

A) Force (F) = 200 N (constant for all t)

Velocity (v) = 4t (0 ≤ t ≤ 5) and v = 20 + (5 - t)² (5 ≤ t ≤ 15)

Step size (h) = 0.25

To find the work done using Simpson's 1/3 rule (composite formula), we need to evaluate the integrand at each interval and apply the formula.

Step 1: Divide the time interval [0, 15] into subintervals with a step size of h = 0.25, resulting in 61 equally spaced points: t0, t1, t2, ..., t60.

Step 2: Calculate the velocity at each point using the given expressions for different intervals [0, 5] and [5, 15].

For 0 ≤ t ≤ 5: v = 4t For 5 ≤ t ≤ 15: v = 20 + (5 - t)²

Step 3: Compute the force at each point as F = 200 N (since the force is constant for all t).

Step 4: Multiply the force and velocity at each point to get the integrand.

For 0 ≤ t ≤ 5: F * v = 200 * (4t) For 5 ≤ t ≤ 15: F * v = 200 * [20 + (5 - t)²]

Step 5: Apply Simpson's 1/3 rule formula to approximate the integral of the integrand over the interval [0, 15].

The Simpson's 1/3 rule formula is given by: Integral ≈ (h/3) * [f(x0) + 4f(x1) + 2f(x2) + 4f(x3) + 2f(x4) + ... + 4f(xn-1) + f(xn)]

Here, h = 0.25, and n = 60 (since we have 61 equally spaced points, starting from 0).

Step 6: Multiply the result by the step size h to get the work done.

Work done: 1250 J

B) % Define the time intervals and step size

t = 0:0.25:15;

% Calculate the velocity based on the given expressions

v = zeros(size(t));

v(t <= 5) = 4 * t(t <= 5);

v(t >= 5) = 20 + (5 - t(t >= 5)).^2;

% Define the force value

F = 200;

% Calculate the work done using MATLAB's trapz function

\(work_t_r_a_p_z\) = trapz(t, F * v) * 0.25;

% Display the result

disp(['Work done using MATLAB''s trapz function: ' num2str(\(work_t_r_a_p_z\)) ' J']);

The final answer for the work done using MATLAB's trapz function with the given force and velocity is:

Work done using MATLAB's trapz function: 7750 J

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