The following data gives stopping potential V0 versus wavelength for photoelectrons produced from a metal surface. (Be sure to include the correct units and use three significant figures.)
Table 1
λ
(nm) V0
(volts)
50 21.3
100 9.33
150 5.18
200 3.15
250 1.91
300 1.07
Use an analysis similar to that used in the inlab procedure to determine the work function (in eV) for this surface. (Use
1 eV = 1.602 ✕ 10−19 J,
e = 1.602 ✕ 10−19 C,
c = 2.998 ✕ 108 m/s,
and
h = 6.626 ✕ 10−34 J · s = 4.136 ✕ 10−15 eV · s
as necessary.)

Answer:

7.08

Explanation:

Answer:

4

(m)

2 ( s )

Explanation:

ok...........

Answer:

Frequency of sound wave = 198.83 hertz (Approx.)

Explanation:

Given:

Velocity of sound wave in air = 340 m/s

Wavelength = 1.71 meter

Find:

Frequency of sound wave

Computation:

Frequency = Velocity / Wavelength

Frequency of sound wave = Velocity of sound wave in air / Wavelength

Frequency of sound wave = 340 / 1.71

Frequency of sound wave = 198.8304

Frequency of sound wave = 198.83 hertz (Approx.)

Answer:

The new planet has more gravity

Explanation:

gravity force =  G m1 m2 / r^2

   decresing r  or increasing the planet mass will increase the force

Answer:

A

Explanation:

The effects due to light from distant stars

The characteristics of the solar system would have to be known or calculated in order to send a probe to a distant planet, such as Jupiter, due to the effects of the gravity from the other planets. Hence, option C is the correct answer.

When sending a probe to a distant planet, such as Jupiter, one of the critical factors that would have to be known or calculated is the effects due to the gravity from the other planets in the solar system. The gravitational interactions between the planets can significantly influence the trajectory and path of the probe during its journey. Accurate calculations are necessary to ensure that the probe's trajectory is properly planned and adjusted to reach its destination with precision. Hence, option C is the correct answer.

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Answer:

work = 1125 [J]

Explanation:

To solve this problem we must remember the definition of power, which is defined as the relationship between work and time. The power can be calculated using the following equation:

Power = work/time

Power = 12.5 [w]

work = joules [J]

time = 1.5 [min] = 90 [s]

work = 12.5*90

work = 1125 [J]

Answer:

an abbreviation formed from the initial letters of other words and pronounced as a word (e.g. ASCII, NASA ).

Explanation:

....

Answer:

Definition of acronym:a word (such as NATO,radar or laser)formed from the initial letter or letters of each of the successive parts or major parts of a compound term also :an abbreviation (such as FBI formed from initial letters:intialism.

Explanation:

Hope it helps

Since space is so vast, many astronomers choose to use a unit of measurement known as a parsec instead of measuring distances in miles or kilometers. the nearest star, Alpha Centauri, in your mind

Why then would Solo use a parsec, which measures distance rather than time, to describe how fast his ship could move? Here, two distinct narratives are in play.

The Kessel RuEmpire then was among the busiest smuggling routes in the Galactic Empirethe Galactic Empire, the Kessel Run was one of the busiest smuggling routes. The Kessel Run, according to Han Solo, was completed by his Millennium Falcon in fewer than twelve parsecs. Unlike time, a parsec measures distance. When he said this, Solo wasn't specifically referring to his ship's speed speed of his ship.

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Answer:

0.969 s  (3 s.f.)

Explanation:

Constant Acceleration Equations (SUVAT)

\(\boxed{\begin{array}{c}\begin{aligned}v&=u+at\\\\s&=ut+\dfrac{1}{2}at^2\\\\ s&=\left(\dfrac{u+v}{2}\right)t\\\\v^2&=u^2+2as\\\\s&=vt-\dfrac{1}{2}at^2\end{aligned}\end{array}} \quad \boxed{\begin{minipage}{4.6 cm}$s$ = displacement in m\\\\$u$ = initial velocity in ms$^{-1}$\\\\$v$ = final velocity in ms$^{-1}$\\\\$a$ = acceleration in ms$^{-2}$\\\\$t$ = time in s (seconds)\end{minipage}}\)

When using SUVAT, assume the object is modeled as a particle and that acceleration is constant.

Acceleration due to gravity:  g = 9.8 ms⁻²

Resolving vertically, taking up as positive:

\(\begin{aligned}\textsf{Using} \quad v&=u+at:\\\\0&=9.5+(-9.8)t\\-9.5&=-9.8t\\t&=\dfrac{-9.5}{-9.8}\\t&=0.9693877551\\\implies t&=0.969\; \sf s\;(3\:s.f.)\end{aligned}\)

Therefore, it takes 0.969 s (3 s.f.) for the tennis ball to teach the top of its trajectory.

Not all stars are the same color as our Sun; hot stars are indeed brighter than cool stars of equal size and distance.

Stars come in a variety of colors, ranging from red to blue, which are determined by their temperature.

Our Sun is classified as a yellow dwarf star. Hotter stars, such as blue stars, emit more light and appear brighter compared to cooler, red stars of the same size and distance from Earth.

This difference in brightness is due to the fact that hotter stars radiate more energy across the electromagnetic spectrum.

Therefore, it is not accurate to say that all stars are the same color as our Sun, and it is true that hot stars are much brighter than cool stars when size and distance are equal.

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(a) The resistance of the path through the patient if the defibrillator has an 8.00-μF capacitance = 1.25 × 10³ Ω.

(b) It takes 7.69 ms to decline to 6.00 × 10² V

The RC time constant is given by the equation:

τ = RC

Where

τ is the time constant

R is the resistance, and

C is the capacitance.

Hence,

R = τ / C

R = (10.0 ms) / (8.00 μF)

R = 1.25 × 10³ Ω

So the resistance of the path through the patient is 1.25 × 10³ Ω.

The voltage of a capacitor as a function of time is given by the equation:

V(t) = V₀e^(-t/τ)

Where

V(t) is the voltage at time t

V₀ is the initial voltage, and

τ is the time constant.

Hence,

:t = -τ ln(V(t)/V₀)

Substituting the given values for the initial voltage, the final voltage, and the time constant:

t = -(10.0 ms)ln((6.00 × 10² V)/(12.0 kV))t

= 7.69 × 10⁻³ st

= 7.69 ms

So it takes 7.69 ms for the voltage to decline to 6.00 × 10² V.

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(a) It can be stated that the 10-gram marble hits the ground first because it has a higher acceleration and travels faster.

(b) Both marbles will travel the same distance since their horizontal components of velocity and initial velocity with respect to the ground are the same.

According to the given statement, a 10-gram marble has a speed that is 5 times faster than that of a 100-gram marble. Both marbles roll off the table at the same time. The questions to answer are as follows:

(a) The acceleration due to gravity is constant at 9.8 m/s², according to Newton's Law of Gravitation.

According to the law of physics, heavier objects fall faster than lighter ones, but since the 10-gram marble has a speed that is five times faster than the 100-gram marble, it implies that the 10-gram marble covers more ground in less time than the 100-gram marble as acceleration is directly proportional to the force applied.

The time taken by both marbles to reach the ground is given byt = √(2h/g)where h is the height from which the marbles were dropped, and g is the acceleration due to gravity.

The height from which the marbles were dropped is the same in both cases, so it can be stated that the 10-gram marble hits the ground first because it has a higher acceleration and travels faster.

(b) The range traveled by both marbles is determined by the horizontal component of their velocity. It's worth noting that the horizontal components of their velocities are identical since they were launched from the same height, so there's no advantage for either marble.

The range of a projectile is determined by the formula:

R = u²sin(2θ)/g where R is the range, u is the velocity of the object, θ is the angle of the initial velocity with the horizontal, and g is the acceleration due to gravity.

Since the angle of the initial velocity with the horizontal is the same for both marbles, and their initial velocity is also the same, it can be stated that both marbles travel the same distance.

Therefore, both marbles will travel the same distance since their horizontal components of velocity and initial velocity with respect to the ground are the same.

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Answer:

1.) Chemical Change - a change in matter that results in a change in its identity and properties

2.) Combustibility - the ability of a substance to burn

3.) Reactivity - The ability of a substance to combine Chemically with another

4.) Chemical Property - the ability of matter to change into a different substance

Explanation:

Proof: -Image Below & the definitions for each word-

Chemical Change- Chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. ... An example of a chemical change is the reaction between sodium and water to produce sodium hydroxide and hydrogen.

Combustibility- Combustibility is a measure of how easily a substance bursts into flame, through fire or combustion. This is an important property to consider when a substance is used for construction or is being stored. It is also important in processes that produce combustible substances as a by-product.

Reactivity- In chemistry, reactivity is the impetus for which a chemical substance undergoes a chemical reaction, either by itself or with other materials, with an overall release of energy.

Chemical Property- A chemical property is any of a material's properties that becomes evident during, or after, a chemical reaction; that is, any quality that can be established only by changing a substance's chemical identity. ... They can also be useful to identify an unknown substance or to separate or purify it from other substances.

Have a nice day!

Chemical change - A change in a substance that brings a change in its identity and properties

Combustibility - The ability of a substance to bursts into the combustion

Reactivity - The ability of a matter to chemically combine with others.

Chemical Property - The ability of a substance to change into a completely different substance.

Chemical changes take place when a substance combines with another substance to create a new substance, called chemical synthesis. An example of a chemical change is the formation of sodium hydroxide and hydrogen by the reaction between sodium and water.

Combustibility determines how easily a substance can burst into flame, through combustion. The combustibility is a property to consider when a substance is used for storage or for construction. It is also an important property in processes where the formation of combustible substances is a side product.

In chemistry, reactivity is the property of a chemical substance that undergoes a chemical reaction with itself or with other chemicals,  and the overall release of energy.

Chemical properties are the characteristics of a particular substance that can be noticed during a chemical reaction. Some major chemical properties include heat of combustion, flammability, rate of radioactive decay, toxicity, pH value, and chemical stability.

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Answer:

here's the answers!

Explanation:

A mover carries a box up a flight of stairs.

A mover carries a box across a room.

A weightlifter lifts a barbell off the ground.

hope it helps u!

Answer:

A, D, E

Explanation:

Did it

The final velocities of bumper car 1 is 6.17 m/s, and the final velocity of bumper car 2 is 5.47 m/s.

The final velocity, in meters per second, of bumper car 1 and bumper car 2 can be calculated using the law of conservation of momentum, which states that the total momentum of an isolated system remains constant during an interaction.

Since the collision is elastic, the kinetic energy is also conserved. Here's how to calculate the final velocity of bumper car 1 and bumper car 2:

Initial velocity of bumper car 1, u₁ = 6.71 m/s

Initial velocity of bumper car 2, u₂ = 4.93 m/s

Final velocity of bumper car 1, v₁ = ?

Final velocity of bumper car 2, v₂ = ?

Since the bumper cars have the same mass, m₁ = m₂ = m (say)

According to the law of conservation of momentum,

m₁u₁ + m₂u₂ = m₁v₁ + m₂v₂

Let's substitute the values:

mu₁ + mu₂ = mv₁ + mv₂

(m₁ + m₂)u₁ = m₁v₁ + m₂v₂

Now, substitute the mass and velocity values:

m × 6.71 + m × 4.93 = m × v₁ + m × v₂

Simplifying the above equation, we get:

v₁ + v₂ = 11.64 ...(1)

Similarly, using the law of conservation of kinetic energy, the final velocities can be determined. It is given by,

m₁u₁² + m₂u₂² = m₁v₁² + m₂v₂²

Substituting the values, we get:

m × 6.71² + m × 4.93² = m × v₁² + m × v₂²

Simplifying the above equation, we get:

v₁² + v₂² = 62.98 ...(2)

From equations (1) and (2), we can solve for v₁ and v₂ by elimination method as follows:

v₁ + v₂ = 11.64 ...(1)

v₁² + v₂² = 62.98 ...(2)

Multiplying equation (1) by v₁ and subtracting it from equation (2), we get:

v₁² + v₂² - v₁² - v₁v₂ = 62.98 - 11.64

v₁v₂ = 51.34 ...(3)

Again, subtracting equation (1) from equation (2), we get:

v₁² + v₂² - v₁² - 2v₁v₂ - v₂² = 62.98 - 11.64

v₁v₂ = 25.07 ...(4)

Now, solving equations (3) and (4), we get:

v₁ = 6.17 m/s, v₂ = 5.47 m/s

Therefore, the final velocity of bumper car 1 is 6.17 m/s, and the final velocity of bumper car 2 is 5.47 m/s.

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Express the first vector as the sum of the second vector's scalar multiples to represent a vector as a linear combination of another vector.

Finding scalar coefficients that, when multiplied by the components of the other vector, will add up to the components of the original vector is necessary to represent a vector as a linear combination of another vector. For instance, if you have a vector (a, b) and another vector (c, d), you may find scalars x and y such that x(c, d) + y(a, b) = in order to represent the original vector as a linear combination of the second vector (a,b). You obtain x = (ad-bc)/(cd-bd) and y = (ac-bd)/ after solving for x and y. (cd-bd). The linear combination of the two vectors is then obtained by filling in the values of x and y.

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The work done by the child on the wagon is 158.4 J

Work done is defined as the product of the force applied on the object and the component of distance traveled by the object in the direction of the force. Mathematically,

W = FdCosθ

where,

W = work done = ?

F = force applied = 16 N

d = displacement = 10 m

θ = angle of inclination = 25°

Therefore,

W = (16 N) (10 m)Cos(25°)

W = 158.4 J

Hence, work done by the child on the wagon is 158.4 J

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It states that: "At constant volume the pressure of a gas sample is directly proportional to the absolute temperature."

This means that doubling the pressure of the gas will cause its absolute temperature to double.

Mathematically this law is expressed as:

       \(\boxed{\large\displaystyle\text{$\begin{gathered}\sf \bf{\dfrac{P_{1}}{T_{1}}=\frac{P_{2}}{T_2} \iff \ P_1T_2=P_2T1 } \end{gathered}$} }\)

We have that the data is:

P₁ = 0.87 atm

T₁ = 25 °C + 273 = 298 K

T₂ = 50 °C + 273 = 323 K

P₂ = ?

We clear for the final pressure:

\(\boxed{\large\displaystyle\text{$\begin{gathered}\sf \bf{P_{2}=\frac{P_1T_2}{T_{1}} } \end{gathered}$}}\)

\(\boxed{\large\displaystyle\text{$\begin{gathered}\sf \bf{P_{2}=\frac{(0.87 \ atm)\cdot(323\not{k})}{298\not{k}} } \end{gathered}$}}\)

\(\boxed{\boxed{\large\displaystyle\text{$\begin{gathered}\sf \bf{P_{2}=0.94 \ atm } \end{gathered}$}}}\)

For a 42.0-cm-diameter wheel, consisting of a rim and six spokes,the angular speed is mathematically given as

w=118.6 rad/s

Generally, the equation for the  Conservation of energy  is mathematically given as

K1+U1=K2+U2

Therefore

Mgh+0=0+(1/2)MV2+(1/2)Iω2

Where

M=m+6m

M=2rλ(π+3)

Therefore

\(2r \lambda (\pi+3)gh=0.52r \lambda (\pi+3)(rw)2+(1/2)[(2 \pi \lambda r)r2+6( \lambda r)r2/3]w2\)

\(w=\sqrt{[(\pi+3)*9.8*53/(0.42/2)2*(\pi+2)\)

w=118.6 rad/s

In conclusion, The angular speed is

w=118.6 rad/s

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Answer:

Recycled answer from jaskhanna07343

Explanation:

Water does not wet waxed surfaces because the cohesive forces within the drops are stronger than the adhesive forces between the drops and the wax. Water wets glass and spreads out on it because the adhesive forces between the liquid and the glass are stronger than the cohesive forces within the water

Apply hooke's law

\(\\ \rm\rightarrowtail F=kx\)

\(\\ \rm\rightarrowtail 1176=k(0.0075)\)

\(\\ \rm\rightarrowtail k=156800N/m\)

#b

We need mass again

\(\\ \rm\rightarrowtail F=kx\)

\(\\ \rm\rightarrowtail mg=kx\)

\(\\ \rm\rightarrowtail 9.8m=156800(0.0048)\)

\(\\ \rm\rightarrowtail 9.8m=752.64\)

\(\\ \rm\rightarrowtail m=76.8kg\)

Answer:

His third law states that for every action or force in nature there is an equal and opposite reaction.

Explanation:

The heavier the books get, the harder it is for Molly to exert enough force to move the cart.

I hope this helps!!!!!!   Please mark me brainliest!!

Answer: The thickness of the vertical flow lines indicates the relative quantity.

The thickness of the vertical flow lines indicates the relative quantity.

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The Acceleration of the system as depicted in the diagram is 1.38 m/s².

Acceleration is the rate of change of velocity. The S.I unit of acceleration is m/s²

To calculate the acceleration of the system, we use the formula below.

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, the acceleration of the system is 1.38 m/s².

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The phase defig in an resistor electrical circuit refers to the phase difference between the voltage and the current.

In a resistor circuit, the voltage (vr) and the current (ir) are related by Ohm's law: vr = irR, where R is the resistance of the resistor. To find vr(t) and ir(t), we need to know the time-dependent behavior of the voltage and the current.

Assuming that the circuit is driven by a sinusoidal voltage source with a frequency of ω, we can express the voltage and the current as vr(t) = Vrms*cos(ωt + φv) and ir(t) = Irms*cos(ωt + φi), where Vrms and Irms are the root-mean-square values of the voltage and the current, and φv and φi are the phase angles of the voltage and the current, respectively.

To find vr(t) and ir(t), we need to determine Vrms, Irms, φv, φi, and R. Once we have these values, we can use the above equations to calculate vr(t) and ir(t).

To determine the phase difference between vr(t) and ir(t), we need to calculate the phase angle φ = φv - φi. The phase angle represents the difference in time between the peaks of the voltage and the current waveforms.

In summary, the phase defig in an electrical circuit refers to the phase difference between the voltage and the current.

To find vr(t) and ir(t), we need to know the time-dependent behavior of the voltage and the current, which can be expressed in terms of Vrms, Irms, φv, φi, and R. The phase difference between vr(t) and ir(t) can be calculated as φ = φv - φi.

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Answer:

i don’t know what kind of waves you mean but if you’re talking about sound waves...

Explanation:

“Sound waves are transmitted through solids, liquids, and gases. Light waves are transmitted through transparent materials (may be clear or colored material such as filters) that allow most of the light that strikes them to pass through them. Only a small amount of light is reflected or absorbed.”

A measure of mass per unit of volume. It is how much material a certain volume contains. ... If the volume of the object stays the same but the mass of the object increases then its density becomes greater.

A boy on a skateboard pushes off the ground with his foot. he and the skateboard accelerate down the sidewalk due to the force on the ground in one direction.

The ground applies an equal and opposite force on the boy in the opposite direction. This force causes the boy and the skateboard to accelerate forward.

According to Newton's second law of motion, the acceleration of an object is directly proportional to the force applied to it and inversely proportional to its mass.

Therefore, the acceleration of the boy and the skateboard will depend on the force applied by the boy's foot and the combined mass of the boy and the skateboard.

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The resulting velocity of the 500-g cart is 0 m/s. The resulting velocity of the 1000-g cart is 1 m/s.