what does the electron energy need to be, in gev, to have a wavelength of 1 femtometer? (

The energies of photons with wavelengths at the maximum for each type of cone are: for S-cones, 2.1 eV (electronic volts); for M-cones, 2.3 eV; and for L-cones, 2.1 eV.

In the case of the human eye, there are three types of cones that are sensitive to different ranges of wavelengths, corresponding to the colors blue, green, and red.

The maximum sensitivities of these cones are at around 420 nm, 530 nm, and 560 nm, respectively.

Using the equation E = hc/λ, where c is the speed of light and λ is wavelength, it is possible to estimate the energies of photons with these wavelengths for each type of cone.

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The correct answer for the angular magnification of the telescope would be 13.11 x 10.

Determining  angular magnification:

An astronomical telescope has an objective with a focal length of 0.80 m and an ocular with a focal length of 6.1 cm. The angular magnification of the telescope is 131x. The formula to calculate the angular magnification of the telescope is given as, `M = -fo/fe` Where `M` is the angular magnification of the telescope.` fo` is the focal length of the objective.

`fe` is the focal length of the eyepiece or ocular. The negative sign indicates that the image is inverted. For an astronomical telescope, the objective is a convex lens and the eyepiece is also a convex lens. The focal length of the objective is `fo = 0.80 m`The focal length of the eyepiece is fe = 6.1 cm = 0.061 m.

Substituting the values in the formula, M = -fo/fe= - (0.80/0.061) = - 13.11. The magnification of the telescope is 13.11x. This magnification indicates that the image will appear 13.11 times closer to the observer. Therefore, the angular magnification of the telescope is given as `M = 13.11 x 10 = 131

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The jovian planets in our solar system include Jupiter, Saturn, Uranus, and Neptune. These gas giants are distinct from the terrestrial planets like Mercury, Venus, Earth, and Mars.

Jovian planets, namely Jupiter, Saturn, Uranus, and Neptune, are characterized by their composition and physical properties. They are primarily composed of gases and lack a solid surface. Jovian planets are much larger in size compared to the terrestrial planets.

They possess thick atmospheres with swirling cloud formations and dynamic weather systems. These gas giants also have a significant number of moons and are accompanied by planetary rings made up of dust and ice particles.

Jovian planets are located farther away from the Sun and have lower densities compared to the terrestrial planets. Their unique characteristics distinguish them from the rocky, inner planets like Mercury, Venus, Earth, and Mars.

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Answer:

Explanation:

Given:

V₀ = 3.0 m/s

H = 5.2 m

__________

L - ?

Time for the ball to fall vertically:

H = g·t²/2;    ⇒    t = √ (2·H / g) = √ (2·5.2 / 9.8) ≈ 1.0 c

Move the ball horizontally:

L = V₀·t = 3.0·1.0 = 3.0 m

If a boy throws a ball with a horizontal velocity of 3.0 m/s, from a height of 5.2 m over the ground , then the horizontal displacement of the ball is 3.09 meters.

There are three equations of motion given by Newton,

v = u + at

S = ut + 1/2 × a × t²

v² - u² = 2 × a × s

As given in the problem If a boy throws a ball with a horizontal velocity of 3.0 m/s, from a height of 5.2 m over the ground

S = ut + 1/2 × a × t²

5.2 = 0 + 0.5 × 9.8 ×  t²

t² = 5.2 / 4.9

t = 1.03 seconds

The horizontal displacement of the ball = 1.03 × 3

                                                                  = 3.09 meters

Thus, the horizontal displacement of the ball is 3.09 meters.

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The given question is not clear as it seems to be incomplete. However, based on the information provided, it appears that a 2.0 kg pendulum is swinging from point A. The height of point A is given as y.

To better understand the situation, let's break it down step by step:

A pendulum is a weight suspended from a fixed point and can swing back and forth.
In this case, we have a 2.0 kg pendulum, which means the weight of the pendulum is 2.0 kg.

Based on the information provided, we know that a 2.0 kg pendulum swings from point A, but further details are required to provide a more accurate answer.
The pendulum swings from point A, but it's not clear what point A represents. It could be the highest point of the swing or the starting position.
The height of point A is given as y, but the actual numerical value of y is missing.

Based on the information provided, we know that a 2.0 kg pendulum swings from point A, but further details are required to provide a more accurate answer.

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The magnitude of the distance (33.4 m) of the player is greater than his displacement (27.4 m).

The given parameters;

A sketch of the players displacement is shown below;

     |---------------------27.4 m--------------------------->|---------3 m------->|

box ________________________________base

                                                                             ←------ 3m----------

The total distance of the player = 27.4 m + 3 m extra + 3m backwards

                                                     = (27.4 + 3 + 3) m

                                                     = 33.4 m

The displacement of the player = forward displacement - backward displacement

The displacement of the player = (27.4 + 3) - 3 = 27.4 m

Thus, the magnitude of the distance (33.4 m) of the player is greater than his displacement (27.4 m).

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In general, the most prevalent ways of electrical wire bonding are:

Soldering, Wire nuts, Crimping, Terminal blocks, Heat shrink tubing.

Soldering is the process of melting a metal alloy, such as tin or lead, onto wires to form a permanent, low-resistance link. Soldering is frequently used to join fragile or thin wires.

Wire nuts are twist-on connectors that are often used for connecting wires. They are available in a variety of sizes to accommodate various wire gauges and may be quickly removed if necessary.

Crimping is the process of pressing a metal connection onto a wire using a specific tool to produce a strong bond. This technique is frequently utilised in automotive and maritime applications.

Terminal blocks are used to join together many wires. They are made up of a metal strip and screws that keep the wires in place.

Heat shrink tubing is a form of plastic tubing that contracts when heated. It is useful for insulating and protecting splices and connectors.

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Explanation:

In case the resistors are in series

R =R1 + R2

R = 40 ohm + 40 ohm

R = 80 ohm

In case the resistors are in parallel

R = 1/R1 + 1/R2

R = 1/40 + 1/40

R = 2/40 ohm

R = 1/20 ohm or R = 0.05 ohm

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Answer:

dtwtwerEtbWt

Explanation:

bwtrbtWbTW4TBW4tbW4T4t

Answer:

A)    Net force in the horizontal direction is 19.641 N

B)    Net force in the vertical direction is 20 N

Explanation:

The normal force (20 N) and the weight force (20 N) cancel out.

Next lets find the horizontal and vertical components on the right side of the diagram.

We are given the angle and the hypotenuse.

First lets find the opposite side (vertical component).

\(sin(x)\frac{O}{H}\)

\(O=Hsin(x)\)

\(O=40sin(30)\)

\(O=20\)

Now lets find the adjacent side (horizontal component).

\(cos(x)=\frac{A}{H}\)

\(A=Hcos(x)\)

\(A=40cos(30)\)

\(A=34.641\)

Now we can ignore the 40 N force.

We are left with 1 force in the vertical direction.

So the net force in the vertical direction is 20 N

We are left with 2 forces in the horizontal direction.

We have 1 force of 15 Newtons moving in the left direction.

We also another force of 34.641 Newtons moving to the right.

So the net force in the horizontal direction is 19.641 N.

The hand that holds the broomstick's top when you sweep is its fulcrum. The hand in the top of the broom serves as the pivot point, making it a lever.

The majority of brooms have the fulcrum inserted into the bristles at the base of the brush. The user can apply a reasonable amount of force without the broom tipping over or becoming unstable because this location has a good balance of leverage and stability.

A lever is a straightforward device with a rigid bar or board that rotates around the fulcrum, a fixed point.

Lever, Pulley, Wheel and Axle, Inclined Plane, Wedge, and Screw are the six classical simple machines.

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The magnitude of the vector sum of the two vectors V and W is determined as 240.84 m.

The given vector can be resolved into x and y axis as follows;

Vx = Vcosθ

Vx = 448cos(224)

Vx = -322.26

Vy = Vsinθ

Vy = 448 x sin224

Vy = -311.2

Wx = 336 x cos(75.9)

Wx = 81.86

Wy = 336 x sin75.9

Wy = 325.88

∑X = -322.26 + 81.86 = -240.4

∑Y = -311.2 + 325.88 = 14.68

R = √[(-240.4)² + (14.68)²]

R = 240.84 m

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The relationship between molar mass and delta t (Δt) is derived from the colligative properties of solutions. Colligative properties are those properties that depend on the number of solute particles in a given volume of solution, regardless of the type of solute particles.

One of the colligative properties is the freezing point depression, which is the difference between the freezing point of a pure solvent and the freezing point of a solution containing a solute. The freezing point depression is directly proportional to the molality (moles of solute per kilogram of solvent) of the solution, and inversely proportional to the molar mass of the solute. This can be mathematically expressed as Δt = Kf * m * (1/M), where Δt is the freezing point depression, Kf is the freezing point depression constant, m is the molality of the solution, and M is the molar mass of the solute. Therefore, as the molar mass of the solute increases, the freezing point depression decreases, and vice versa. This relationship can be useful in determining the molar mass of an unknown solute in a solution.

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The energy transfered to the surroundings from the water of mass 0.5 kg is  46200 J.

Energy is the ability of the capacity to perform work. The s.i unit of energy is Joules (J).

To calculate the energy transferred to the surroundings from the water, we use the formula below.

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, the energy transfered to the surroundings from the water is  46200 J.

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Answer:  14 inches.

Explanation: The radius of this circle is 7 inches, so the diameter is 2(7) = 14 inches. The diameter is 14 inches.

If the resistance remains constant and the voltage doubles, the power will increase by a factor of 4 (option E)

The following data were obtained from the question:

P = V² / R

Resistance is constant, we have

V₁² / P₁ = V₂² / P₂

V² / P = (2V)² / P₂

V² / P = 4V² / P₂

Cross multiply

V² × P₂ = P × 4V²

Divide both side by V²

P₂ = P × 4V² / V²

P₂ = P × 4

From the above, we can conclude that the power will increase by a factor of 4 (option E)

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Answer:

1)  10 kg-m/s

2)  2 kg

3)  20 m/s

Explanation:

The momentum of an object can be calculated using the equation:

\(\large\boxed{p=mv}\)

where:

\(\hrulefill\)

For this question we need to find the momentum of a bowling ball whose mass is 4.0 kg is rolling at a rate of 2.5 m/s.

Given values:

Substitute the given values into the momentum formula and solve for p:

\(p=4.0\;\text{kg} \cdot 2.5\;\text{m/s}\)

\(p=10\;\text{kg m/s}\)

Therefore, the momentum of the bowling ball is 10 kg-m/s.

\(\hrulefill\)

For this question we need to find the mass of a skateboard rolling at a velocity of 3.0 m/s with a momentum of 6.0 kg-m/s.

Given values:

As we want to find mass, rearrange the momentum formula to isolate m:

\(\large\boxed{m=\dfrac{p}{v}}\)

Substitute the given values into the formula and solve for m:

\(m=\dfrac{6.0\; \text{kg m/s}}{3.0\; \text{m/s}}\)

\(m=2\;\text{kg}\)

Therefore, the mass of the skateboard is 2 kg.

\(\hrulefill\)

For this question we need to find the velocity of a baseball with a mass of 0.5 kg and a momentum of 10 kg-m/s.

Given values:

As we want to find velocity, rearrange the momentum formula to isolate v:

\(\large\boxed{v=\dfrac{p}{m}}\)

Substitute the given values into the formula and solve for v:

\(v=\dfrac{10\; \text{kg m/s}}{0.5\; \text{kg}}\)

\(v=20\;\text{m/s}\)

Therefore, the velocity of the baseball is 20 m/s.

The actual efficiency of the plant is \(17.9\)%.

Geothermal power is a form of renewable energy that harnesses heat from the Earth's interior to generate electricity. This heat is captured through geothermal wells or reservoirs and used to drive a turbine to generate electricity.

The heat sources can be found in areas with volcanic activity or hot springs. Geothermal power is considered a clean and sustainable source of energy, as it emits deficient levels of greenhouse gases compared to fossil fuel power plants.

The actual efficiency of geothermal power will be:

Efficiency = (Net electrical output) / (Heat input)

Net electrical output \(=4.3 M W\)

Heat input \(=24MW\)

Therefore, Efficiency \(=4.3/24=0.179\) or \(17.9\)%.

So, the actual efficiency of the plant is \(17.9%\)%.

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Ammeter with internal resistance of 1.0 Ω, gives reading of 2.0 A.

To determine the ammeter reading, calculate the total resistance of the circuit and then use Ohm's law to find the current.

The total resistance of the circuit is the sum of the resistance of the 2.0 Ω resistor and the internal resistance of the ammeter, which gives,

R_total = R_1 + R_ammeter = 2.0 Ω + 1.0 Ω = 3.0 Ω

Using Ohm's law, calculate the current in the circuit,

I = V / R_total

where V is the voltage of the power supply.

Substituting the given values,

I = 6.0 V / 3.0 Ω = 2.0 A

Therefore, the ammeter reading is 2.0 A.

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Answer:

Sound waves have a low speed of 330 m/s

Sound waves are mechanical waves

Electromagnetic waves have a greater speed of 3.0×10^8 m/s

Electromagnetic waves are due to disturbance of electromagnetic objects.

a) the resistance of the wire in the blanket is approximately 4.99 ohms

b) the current it carries is 3.61 A.

To determine the resistance of a 65 W electric blanket running at 18 V, you can use Ohm's Law (V = IR) and the power equation (P = IV).

First, find the current (I) using the power equation:

65 W = I × 18 V, so I = 65 W / 18 V = 3.61 A.

Now, use Ohm's Law to find the resistance (R):

18 V = 3.61 A × R, which gives R = 18 V / 3.61

A ≈ 4.99 ohms.

Therefore, the resistance of the wire in the blanket is approximately 4.99 ohms, and the current it carries is 3.61 A.

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Answer:

Option A, 0.31

Explanation:

n = Time taken / half life

n = 32/ 8

= 4

Remaining fraction = 1/2^n

= 1/2⁴

= 1/16

Amount of iodine-131 left = 1/16 × 5

= 0.3125

Answer:

The runner's acceleration was \(1\ m/s^2\)

Explanation:

Constant Acceleration Motion

It's a type of motion in which the velocity of an object changes by an equal amount in every equal period of time.

Being a the constant acceleration, vo the initial speed, vf the final speed, and t the time, the following relation applies:

\(v_f=v_o+at\)

Solving for a:

\(\displaystyle a=\frac{v_f-v_o}{t}\)

The runner speeds up from vo=5 m/s to vf=9 m/s in t=4 seconds, thus:

\(\displaystyle a=\frac{9-5}{4}\)

\(\displaystyle a=\frac{4}{4}=1\)

The runner's acceleration was \(1\ m/s^2\)

Answer:

490 W

Explanation:

F = ma = (50 kg)(9.8 m/s²) = 490 N    (Weight = W = mg)

Work = W = Fd = (490 N)(5 m) = 2450 J

Power = W/t = 2450 J / 5 s = 490 J/s = 490 W  (watts)

As the components of velocity, the horizontal velocity remains constant while the vertical velocity increases.

According to physics, projectile motion is the movement of an object brought on by gravity. The vertical upward flinging of a body is an example of projectile motion. The only force acting on a body in a projectile is gravity; air resistance is not taken into account. When a body is launched with starting velocity at an angle to the horizontal, this is referred to as a projectile motion.

This projectile's body travels vertically, and its trajectory is the direction it travels. Throwing a ball horizontally from the edge of a cliff is an example of a projectile motion. These serve as illustrations of projectile motion.

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Answer:

10 V

Explanation:

RMS Voltage (Root Mean Square Voltage) of a Waveform is the amount of AC power that produces the same heating effect equal to that of a DC.

The peak voltage is the highest value the voltage of any waveform can attain (that is it is the maximum voltage attained).

The RMS voltage is given as:

\(V_{rms}=\frac{V_p}{\sqrt{2} } \\\\Given\ V_p=14.14\ V,hence:\\\\V_{rms}=\frac{14.14}{\sqrt{2} } \\\\V_{rms}=10\ V\)

Answer:

Torque is the rotational equivalent of linear force. Torque is the engine's rotational force.

Hope this helps..

Explanation:

Answer:

375J of wasted energy

Explanation:

Efficiency=work output/work input×100%

50=w.o/750×100

750×50=100w.o

w.o=750×50/100

w.o=75×5

w.o=375J

Wasted energy=750J-375J

=375J

Aliter

If the machine is 50% efficient then it is also 50% inefficient

50%×750J=375J

Answer:

I don't understand

Explanation: