determine the ratio of output force, fo , to input force, fi . ignore friction and the mass of the lever, and assume the work output equals the work input.

Answer:

correct statement should be the same speed.

Explanation:

if the car is moving east reads 60 mph and it passes another car with the same speed.

therefore, the magnitudes of their velocities are equal.

and each car's velocity is the negative of the other car vehicle.

so the correct statement should be the same speed.

Answer:

They have different velocities

Explanation:

The cars are passing each other at the same speed, and because velocity is speed with direction they are at different velocities.

Three charges q1 = -10 nc q2= 12nc and q3 =20 nc are put at the three corner of rectangle with side a=3 m and b = 4. The electric potential due to the three charges at the center point of the rectangle is 79.208 V.

Let's calculate the electric potential due to the three charges.

Given:

q1 = -10 nC

q2 = 12 nC

q3 = 20 nC

Side a = 3 m

Side b = 4 m

Electrostatic constant (k) = 8.99 x \(10^9 Nm^2/C^2\)

First, let's calculate the distances from each charge to the point at the center of the rectangle:

Distance from q1 to the center point:

r1 = √((a/2)^2 + (b/2)^2)

  = √((3/2)^2 + (4/2)^2)

  = √(2.25 + 4)

  = √6.25

  = 2.5 m

Distance from q2 to the center point:

r2 = √\(((a/2)^2 + (b/2)^2)\)

  = √\(((3/2)^2 + (4/2)^2)\)

  = √(2.25 + 4)

  = √6.25

  = 2.5 m

Distance from q3 to the center point:

r3 = √\(((a/2)^2 + (b/2)^2)\)

  = √\(((3/2)^2 + (4/2)^2)\)

  = √(2.25 + 4)

  = √6.25

  = 2.5 m

Now, let's calculate the electric potential due to each charge:

For q1 = -10 nC:

V1 = k * (q1 / r1)

  = (8.99 x \(10^9 Nm^2/C^2\)) * (-10 x \(10{^-9\) C) / (2.5 m)

  = -35.96 V

For q2 = 12 nC:

V2 = k * (q2 / r2)

  = (8.99 x \(10^9 Nm^2/C^2\)) * (12 x \(10{^-9\) C) / (2.5 m)

  = 43.188 V

For q3 = 20 nC:

V3 = k * (q3 / r3)

  = (8.99 x \(10^9 Nm^2/C^2\)) * (20 x \(10{^-9\) C) / (2.5 m)

  = 71.98 V

Finally, let's calculate the total potential:

\(V_{total\) = V1 + V2 + V3

       = -35.96 V + 43.188 V + 71.98 V

       = 79.208 V

Therefore, the electric potential due to the three charges at the center point of the rectangle is approximately 79.208 volts.

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The amount of energy of a single photon of light is determined by its frequency.

The Planck-Einstein relation is a fundamental equation that describes the relationship between the energy (E) of a single photon of light and its frequency (f).

where h is Planck's constant, a physical constant with a value of approximately . This equation suggests that the energy of a photon is directly proportional to its frequency. In other words, photons with higher frequencies (such as those in the ultraviolet or x-ray parts of the electromagnetic spectrum) have more energy than those with lower frequencies  (such as those in the infrared or radio parts of the spectrum).

The speed of the photon and the material it moves through can affect its wavelength and therefore its frequency, but they do not directly determine its energy. The time it takes the photon to reach a destination is not directly related to its energy either.

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When the switch is turned on the lightbulb flashes on once, and then no current passes through it, the correct option is E.

When the switch is turned on, the circuit on the left will experience a brief period of changing current as the current ramps up to its final value. This changing current produces a changing magnetic field, which in turn induces an emf in the inner solenoid.

This induced emf causes a brief current to flow in the outer solenoid, which is connected to the lightbulb circuit. As a result, the lightbulb will flash on momentarily. However, once the current in the left circuit reaches its final value, the magnetic flux through the inner solenoid will stop changing, and thus the induced emf in the outer solenoid will drop to zero, the correct option is E.

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The complete question is:

Consider the two concentric solenoids shown in Figure, one of which is attached to a battery, a resistor, and a switch and the other of which is attached to a lightbulb. (No current passes directly between the two circuits.) When the switch is turned on, what is expected to happen?

A. No current passes through the lightbulb.

B. The intensity of the lightbulb increases and quickly reaches its maximum, final intensity.

C. The lightbulb flickers on and off with a regular frequency and constant intensity.

D. The lightbulb flickers on and off with a regular frequency and decreasing intensity.

E. The lightbulb flashes on once, and then no current passes through it.

For the given mode values with n > 1, we will calculate the average frequency and uncertainty for each resonance based on the spread in the measured maximum and minimum sustainable frequencies are 33.3 Hz and 47.7 Hz.

For n = 2, the maximum sustainable frequency is 33.6 Hz, and the minimum sustainable frequency is 33.3 Hz. To calculate the average frequency, we take the average of these two values: (33.6 Hz + 33.3 Hz) / 2 = 33.45 Hz. The uncertainty is obtained by taking half of the difference between the maximum and minimum frequencies: (33.6 Hz - 33.3 Hz) / 2 = 0.15 Hz. Therefore, the average frequency for n = 2 mode is 33.45 Hz with an uncertainty of ±0.15 Hz. The fundamental frequency for this mode would be the minimum sustainable frequency, which is 33.3 Hz.

For n = 3, the maximum sustainable frequency is 48.9 Hz, and the minimum sustainable frequency is 47.7 Hz. Following the same procedure, the average frequency is (48.9 Hz + 47.7 Hz) / 2 = 48.3 Hz, and the uncertainty is (48.9 Hz - 47.7 Hz) / 2 = 0.6 Hz. Therefore, the average frequency for n = 3 mode is 48.3 Hz with an uncertainty of ±0.6 Hz. The fundamental frequency for this mode is 47.7 Hz.

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Light bulb could be plugged into a socket in Europe, would be true about how bright the bulb was (c). The bulb would be one-half as bright is the correct option.

The brightness of a light bulb is measured in terms of its power consumption, which is given in watts (W). When the voltage is constant, the power consumed by a device is directly proportional to its brightness. In the United States, a standard 60 W light bulb operates at 120 V. To determine the current consumed by the bulb, we can use Ohm's law:

Power = Voltage x Current

60 W = 120 V x Current

Current = 60 W / 120 V = 0.5 A

Now, if we were to plug this same 60 W light bulb into a socket in Europe with a standard voltage of 240 V, we can use Ohm's law again to determine the current consumed by the bulb:

Power = Voltage x Current

60 W = 240 V x Current

Current = 60 W / 240 V = 0.25 A

The power consumed by the bulb is the same, regardless of the voltage it is connected to. But the current consumed by the bulb in Europe is half of what it would be in the United States.

The bulb would be one-half as bright when plugged into a socket in Europe compared to when it is plugged into a socket in the United States.

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Answer:

the answer is the option C

Answer:

v =25 m/s

time= 50 s

Velocity =Displacement/Time

Displacement = Velocity × Time

S = 25×50

s=1250m

Explanation:

v =25 m/s

time= 50 s

Velocity =Displacement/Time

Displacement = Velocity × Time

In most cases, when wave refract, frequency and amplitude will be constant while wavelength and speed will change.

The four properties of waves are:

When a wave moves from one medium to another, the wave will undergo refraction.

When a wave move for instance, from water to glass, the wave will refract by changing direction. In most scenario, the frequency of the wave will be constant while the wavelength of the wave will change. Since the wavelength will change, the speed will also change.

Therefore, when a wave moves from one medium to another, the properties of the wave that change are wavelength and wave speed.

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Answer:

D

Explanation:

Mercury has no tilt do mercury would have no seasons and venus has very slow tilt and also very small axial tilts

The wavelength of light with a frequency of 3.2 × 10^12 Hz is approximately 0.09375 micrometers.

The relationship between wavelength (λ), frequency (ν), and the speed of light (c) is given by the equation λ = c/ν. In this case, the frequency is 3.2 × 10^12 Hz. The speed of light in a vacuum is approximately 299,792,458 meters per second. To convert this value to micrometers, we divide it by 1,000,000. Plugging these values into the equation, we have λ = \(\frac{299,792,458 m/s} {3.2 * 10^{12} Hz}\) = 0.09375 micrometers. Therefore, the wavelength of light with a frequency of 3.2 × 10^12 Hz is approximately 0.09375 micrometers. Wavelength and frequency are inversely proportional, meaning that as the frequency increases, the wavelength decreases. In this case, the frequency is relatively high, resulting in a relatively short wavelength in the micrometer range.

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Answer:

52 feet away from the nba court

Draymond Green and Klay Thompson wanted to make fun of Steph Curry. Kay could have thrown a balloon horizontally at 50 meters per second from a bridge that was 150 meters high, and it would have landed 276.5 meters away.

There are three equations of motion given by Newton,

v = u + at

S = ut + 1/2 × a × t²

v² - u² = 2 × a × s

By using the second equation of the motion,

S = ut + 1/2 × a × t²

150 = 0 + 0.5 × 9.8 ×  t²

t² = 150 / 4.9

t = 5.53 seconds

The horizontal displacement of the balloon = 50 × 5.53

                                                                      = 276.5 meters

Thus, Draymond Green and Klay Thompson wanted to make fun of Steph Curry. Kay could have thrown a balloon horizontally at 50 meters per second from a bridge that was 150 meters high, and it would have landed 276.5 meters away.

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Answer:

4V

Explanation:

First, we calculate the total resistance to the given battery cell of emf 5V. The total resistance is the sum of all the resistance in the cell i.e.

Total resistance = 2Ω + 8Ω = 10Ω

Using ohms law equation to calculate the current passing through the battery cell:

V = IR

Where; V = voltage, I = current, R = resistance

5V = I × 10Ω

I = 5/10

I = 0.5A

Terminal voltage is calculated by the us of the following equation:

V=emf−IR

Where; R is internal resistance

V = 5 - (0.5 × 2)

V = 5 - 1

V = 4V

Therefore, the potential difference across the terminals of the battery cell is 4V

The ball must be thrown down with a velocity of 14 meters per second in order to bounce 10 meters higher than its original level, neglecting any energy losses in striking the ground.

To determine the speed at which a ball must be thrown down to bounce 10 meters higher than its original level, we can use the principle of conservation of energy. Neglecting energy losses due to air resistance and assuming an idealized situation, we can equate the potential energy gained during the bounce to the kinetic energy of the ball before it hits the ground.

The potential energy gained by the ball during the bounce is equal to the gravitational potential energy at the new height, which can be calculated as mgh.

where

m = mass of the ball,

g = acceleration due to gravity (approximately 9.8 m/s²)

h = height gained (10 meters in this case).

The kinetic energy of the ball just before it hits the ground is given by (1/2)mv²,

where

v = velocity of the ball.

Equating these two energies, we have:

mgh = (1/2)mv²

Canceling out the mass (m) from both sides of the equation, we get:

gh = (1/2)v²

Simplifying further, we have:

v = √(2gh)

Substituting the values of g (9.8 m/s²) and h (10 meters), we can calculate the velocity (v):

v = √(2 * 9.8 * 10) ≈ √(196) ≈ 14 m/s

Therefore, the ball must be thrown down with a velocity of approximately 14 meters per second in order to bounce 10 meters higher than its original level, neglecting any energy losses in striking the ground.

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Answer:

5

Explanation:

The light intensity may be defined as the strength of the light or the magnitude of its brightness that a source of light can produce.

The light threshold is the minimum intensity of the light that our eye can detect and the ability to adapt to darkness.

In the context, Daniel wishes to find if can notice the difference in the intensity of the light when he add 5 candles to the set of 50 candles.

He noticed that when he added 5 candles, he could notice the difference in the intensity and when he added less than 5 candles to the set of 50 candles he could not detect.

Thus, the difference threshold for Daniel to detect the change in the intensity of the light is 5 candles.

Answer:

So, the frequency of the sine wave is 25 Hz

Explanation:

The distance between the second maximum of laser 1 and the third minimum of laser 2, is 0.36 m.

x1 = nλL / d

n=second maxima of laser 1

  = 2 * (d/20) *5.40 /d

  = 0.54 m

X2= (n+1/2)λL/d

n= 2= third minima of laser 2

  = 2.5 *(d/15)* 5.40 /d

  = 0.9m

distance del(y)max-min between second maximum of laser 1 and the third minimum of laser 2, on the same side of the central maximum =

0.9 -0.54 = 0.36 m

A laser is a device that produces light by optically amplifying electromagnetic energy through stimulated emission. The term "laser" stands for "light amplification by stimulated emission of radiation" (abbreviated "laser"). The first laser was created in 1960 by Theodore H. Maiman at Hughes Research Laboratories, based on theoretical research by Charles Hard Townes and Arthur Leonard Schawlow.

Because it emits coherent light, a laser is unique among other light sources. Laser cutting and lithography are made possible by spatial coherence, which makes it possible to focus a laser on a small area.

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Answer:

t = 10.82 s

Explanation:

Using the formula, t = (d·cosθ)/(ν\(\\ ox\\\))

t = \(\frac{343.50cos55}{26}\)                                                      

t=10.82 s

Initial speed of the coin (u)= 0 (As the coin is released from rest)

Acceleration due to gravity (a) = g = 9.81 m/s²

Time of fall (t) = 1.5 s

From equation of motion we have:

\( \boxed{ \bf{v = u + at}}\)

By substituting values in the equation, we get:

\( \longrightarrow \) v = 0 + 9.81 × 1.5

\( \longrightarrow \) v = 14.715 m/s

\( \therefore \) Speed of the coin as it hits the ground/Final speed of the coin = 14.715 m/s

The speed of the coin as it hits the ground is 14.715 m/s.

We can solve the problem above using the equation of acceleration under gravity.

⇒ Equation:

v = u+gt................... Equation 1

⇒ Where:

From the question,

⇒ Given:

Substitute these values into equation 1

Note the speed has a negative sign because it acts in the same direction as the acceleration due to gravity

Hence, the speed of the coin as it hits the ground is 14.715 m/s.

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Answer:

Mass is a base unit, acceleration is a derived unit calculated as a function of length and time which are both base units. Any unit definition that is a function of more basic units is considered a derived unit.

Answer:

a) 50 rad/s

b) 39.8 rev

Explanation:

Given:

r = 0.36 m

v₀ = 0 m/s

a = 1.8 m/s

t = 10 s

a) Find: ω

v = at + v₀

v = (1.8 m/s) (10 s) + (0 m/s)

v = 18 m/s

ω = (18 m/s) / (0.36 m)

ω = 50 rad/s

b) Find: Δθ

Δx = v₀ t + ½ at²

Δx = (0 m/s) (10 s) + ½ (1.8 m/s) (10 s)²

Δx = 90 m

Δθ = (90 m) / (2π × 0.36 m)

Δθ = 39.8 rev

Explanation:

im listening to metallica

turn the page

Answer:

11. 6700L

12. 0.0000238

13. 1805

14. 3800

15. 1400

16. 0.01428

17. 0.0003585

18. 0.0415

19. 4060.0

20.0.105

Answer:

today's species evolved from those of the past.

Explanation:

By comparing fossils of a specie from long ago to those of today, we can conclude that today's species evolved from those of the past.

The equation to obtain the vertical distance cobered by the object is,

The acceleration due to gravity on saturn is 0.066 m/s2.

Plug in the known values,

Thus, the time taken by object to fall is 17.4 s.

The force that the washers exert on the force meter will increase as she adds more washers to the meter.

Force exerted by a body is directly proportional to the mass of the body.

Force increases with increase in mass.

The increase in the mass of the washers will result in an increase in the force exerted by the washers.

Therefore, the force that the washers exert on the force meter will increase as she adds more washers to the meter.

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The force will increase when Stacy adds more washers to the force meter.

Answer:

39225J

Explanation:

Given parameters:

Mass of water  = 375grams of water

Change in temperature  = 25°C

Specific heat capacity of water  = 4.184J/g°C

Unknown:

Amount of heat absorbed  = ?

Solution:

To solve this problem, we use the expression below:

      H  = m c Ф  

H is the heat absorbed

m is the mass

c is the specific heat capacity

Ф is the change in temperature

  Insert the parameters and solve;

      H  = 375 x 4.184 x (25) = 39225J

Polar substances are likely to dissolve in polar solvents.

Your answer is B.

Consider the situation where a person that has a mass of 68 kg is descending in an elevator at a constant velocity of 4.0 m/s. At some time "t", the elevator starts to slow to a stop at the rate of 2.0 m/s². then force along the elevator is 136 N.

Force is responsible for the motion of an object. it produces acceleration in the body. According to newton's second law force is mass times acceleration i.e. F =ma. Its SI unit is N which is equivalent to kg.m/s². There are two types of forces, balanced force and unbalanced force. Balanced forces are those forces which are opposite in direction and equal in magnitude. When Net force acting on a body is zero then we call it as balanced force. Balanced force is not responsible for the motion of the body. ex. when two persons pulling rope on both end with equal magnitude which cause them to be balanced force have 0 net force.

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