A change in which property of light will have no effect on whether or not the photoelectric effect occurs??? Frequently energy intensity and wavelength

Answers

Answer 1

Answer: The intensity of the light has no connection with the photoelectric effect.

That's what was so baffling about it before the particle nature of light
was suspected ... a match with a blue flame might stimulate the
photoelectric effect, but a high-power red searchlight couldn't do it.

Answer 2

Answer:

Answer: intensity

Explanation:

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An ocean-going barge is 50.0 m long and 20.0 m wide and has a mass of 145 metric ton. Will the barge clear a reef 1.50 m below the surface of the water?
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Suppose you decide to cut the wire into two pieces (not necessarily the same length) to shape into two circles. Write a function A ( x ) which models the total area of the two circles in terms of x , the length of one of the pieces of wire. (It may be helpful to use for a circle A = πr 2 and C = 2 πr ). Then find the length x that will minimize the total area.

Answers

Answer:

$2\pi r(r+rx)$

Explanation:

Let the area of one circular side be given by the formula : $A_(1) = \pi r^(2)$

However, the wire is a solid cylinder, then it means that the total area is 2 × $\pi r^(2)$ = $2\pi r^(2)$

However, there is the surface area to consider. This is the curved area of the wire. This is given as:

$A_(2) = lb$

The length is x.

The breadth is calculated as follows - the length of the circle = $\pi D = 2\pi r$

Then the area = lb

= $2\pi rx$

Therefore, the total area is given as $A_(1) + A_(2)$

= $2\pi r^(2) + 2\pi rx\n 2\pi r(r+rx)$

The energy of motion is calledA. kinetic energy.
B. potential energy.
C. thermal energy.
D. work.

Answers

A. kinetic energy.

Friction converts kinetic energy into heat, and so it represents a net loss of mechanical energy. When surfaces in contact move relative to each other, the friction between the two surfaces converts kinetic energy into heat. As demonstrated by the use of friction created by rubbing pieces of wood together to start a fire, kinetic energy is converted to heat whenever motion with friction occurs. The friction produced by brake pads in a car must generate a quantity of heat equal to the kinetic energy of the car and as a result, the brakes get quite hot.

its kinetic energy!

good day

A rectangular barge 7 m long and 2 m wide floats in fresh water. How much will the barge sink when loaded with 600 kg of sand? Show all calculations leading to an answer.

Answers

You must apply Archimides' principle.

The barge will sink until the sum of the forces on it equals zero.

The two forces are the weight of the barge (with sand) and the buoyancy force, the force exerted by the liquid (fresh water) on the barge.

Then, weight of the barge with sand = m*g = 600 kg * g

Buoyancy force = density of the fluid * Volume of displaced fulid * g

Then, m*g = density of the fulid * Volume of displaced fluid * g

m*g = df * Vf * g

m = df*Vf => Vf = m/df = 600 kg / 1 000 kg/m^3 = 0.6 m^3

The volume of the displaced fluid equals the volume of the portion of the barge sinked, wich is the area of the rectangular base times the depth to which it sinked>

7m*2m*H = 0.6 m^3 => H = 0.6 m^3 /[14 m^2] = 0.043 m = 4.3 cm

Answer: 4.3 cm

What is the definition for distance?

Answers

distance is an amount of space between two things or people

The two forces in each pair may have different physical origins (for instance, one of the forces could be due to gravity, and its pair force could be due to friction or electric charge). a) True
b) False

Answers

Answer:

b)False

Explanation:

This is the false statement .The two forces in each pair could not have different physical origins.

The two pair of forces have same origin.It can not be possible that one is electric force and other one is gravity force or friction force.

We know that magnitude of electric force is much smaller than the friction force .So they can not be in pair form.

Answer is b) False

Explain why a clothes iron with a metal base must be connected to the mains by a three-core cable.

Answers

The earth connection is because the earth connection(third cable) helps to prevent the casing from turning into a live wire.

What are the three cables?

It is normal to find that the cable that is used in the pressing iron has three wires that connect to live, neutral and earth. The earth connection is very important in the pressing iron.

The reason why we ought to have the earth connection is because the earth connection helps to prevent the casing from turning into a live wire.

Learn more about pressing iron:brainly.com/question/9664475?

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The charge going to the clothes iron needs to be grounded so the iron does not make any shock

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Resolve the following two forces into horizontal and vertical components.

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Do electromagnetic waves travel through a medium

Atoms form two types of bonds. Which describes these bonds? A. In a covalent bond, valence electrons are shared; in an ionic bond, valence electrons are transferred. B. In a covalent bond, valence electrons are transferred; in an ionic bond, valence electrons are shared. C. In a covalent bond, outer electron orbitals are shared; in an ionic bond, outer electron orbitals are transferred. D. In a covalent bond, outer electron orbitals are transferred; in an ionic bond, outer electron orbitals are shared.