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2 years ago

A jet of water squirts out horizontally from

Physics

2 answers:

Paul [167]2 years ago

7 0

Answer:

the answer is 6.06

t=0.501

v=x/t

0.5pv²=pgh

h=v²/2g= 1.09²/2(9.8)=0.0606 m=6.06 cm

Bond [772]2 years ago

5 0

The correct answer to your question is 3.62

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When ultraviolet light with a wavelength of 400 nm falls on a certain metal surface, the maximum kinetic energy of the emitted p

jarptica [38.1K]

Answer:

1.76 eV

Explanation:

Maximum kinetic energy of the emitted photo electrons = energy of the photon- work function of the metal

K.E' = (hc/λ)-∅.................. Equation 1

Where K.E' = maximum kinetic energy of the emitted photo electrons, h = Planck's constant, c = speed, λ = wave length, ∅ = work function of the metal.

make ∅ the subject of the equation

∅ = (hc/λ)-K.E'.................. Equation 2

Given: h = 6.63×10⁻³⁴ J.s, c = 3×10⁸ m/s, λ = 400 nm = 400×10⁻⁹ m, K.E' = 1.1 eV = 1.1(1.602×10⁻¹⁹) J = 1.7622×10⁻¹⁹ J

Substitute into equation 2

∅ = [6.63×10⁻³⁴(3×10⁸)/400×10⁻⁹ ]-1.7622×10⁻¹⁹

∅ = (4.973×10⁻¹⁹)-(1.7622×10⁻¹⁹)

∅ = 3.21×10⁻¹⁹ J.

The maximum kinetic energy of the photo electrons when the wave length is 330 nm is

K.E' = [6.63×10⁻³⁴( 3×10⁸ )/330×10⁻⁹]-(3.21×10⁻¹⁹)

K.E' = (6.03×10⁻¹⁹)-(3.21×10⁻¹⁹)

K.E' = 2.82×10⁻¹⁹ J

K.E' = 2.82×10⁻¹⁹/1.602×10⁻¹⁹

K.E' = 1.76 eV

7 0

3 years ago

Which term describes the relatively constant internal conditions of an organism?

Oliga [24]

Answer:

The correct answer is <u><em>C. Homeostasis</em></u>

Explanation:

<u><em>Homeostasis</em></u> describes the relatively constant internal physical conditions of an organism.

3 0

2 years ago

Can someone help me?!!!!!

babunello [35]

Answer:

56 m/s

Explanation:

The time we are considering is

t = 15 s

The vertical velocity of the projectile is given by

$v_y(t) = v_{0y}-gt$

where

$v_{0y}=100 m/s$ is the initial vertical velocity

$g=9.8 m/s^2$ is the acceleration due to gravity

Substituting t=15 s, we find the vertical velocity of the projectile at that time:

$v_y = 100 m/s - (9.8 m/s^2)(15 s)=-47 m/s$

where the negative sign means the direction is now downward.

The horizontal velocity does not change since there are no forces acting along that direction, so it remains constant:

$v_x = 30 m/s$

So, the magnitude of the velocity at the moment of impact is

$v=\sqrt{v_x^2 +v_y^2}=\sqrt{(30 m/s)^2+(-47 m/s)^2}=55.8 m/s \sim 56 m/s$

3 0

3 years ago

If the amount of work done on a book was 10 J and the force required to move the book was 2.5 N, what was the distance the book

olga55 [171]

Answer:

Explanation:4meters

Work=10J

Force=2.5N

Distance=work ➗ force

Distance=10 ➗ 2.5

Distance=4meter

5 0

3 years ago

Chegg what are the requirements for the shear connectors to be characterised as ductile? why is there a requirement for a minimu

attashe74 [19]

The shear connectors must transfer axial shear stress completely. The minimum slip value is needed to limit the maximum slip at the ultimate limit state.

<h3>What is shear connection?</h3>

A shear connection is a type of join which allows the transfer of shear forces between two members of beams or truss.

The shear connectors are used in composite beam is to transfer the longitudinal shear stresses at the interface between the steel beam and the concrete slab.

The slip requirements are less than in a propped beam. The higher strains resulting in the bare steel section carrying the construction

Thus, minimum slip value is needed to limit the maximum slip at the ultimate limit state.

Learn more about shear connection.

brainly.com/question/20261986

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5 0

1 year ago