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3 years ago

Kung hatiin sa tatlong pangkat ng 72 na bata isang bata mayroon sa bawat pangkat desisyon sentence

Physics

1 answer:

podryga [215]3 years ago

8 0

Answer:

ewan ko papano bato pukinag ina

Explanation:

gagu ka kase putangina mo

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A 2-kg ball is thrown at 3 m/s. What is the ball's momentum? *

crimeas [40]

Answer:

Given

mass (m) =2kg

velocity (v) =3m/s

momentum (p) =?

Form

p=mv

2kgx3m/s

p=6kg.m/s

the momentum of ball's =6kg.m/s

8 0

3 years ago

An airplane flies eastward and always accelerates at a constant rate. At one position along its path it has a velocity of 34.3 m

Tomtit [17]

Explanation:

We'll need two equations.

v² = v₀² + 2a(x - x₀)

where v is the final velocity, v₀ is the initial velocity, a is the acceleration, x is the final position, and x₀ is the initial position.

x = x₀ + ½ (v + v₀)t

where t is time.

Given:

v = 47.5 m/s

v₀ = 34.3 m/s

x - x₀ = 40100 m

Find: a and t

(47.5)² = (34.3)² + 2a(40100)

a = 0.0135 m/s²

40100 = ½ (47.5 + 34.3)t

t = 980 s

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3 years ago

The maximum wavelength that an electromagnetic wave can have and still eject electrons from a metal surface is 459 nm. What is t

spin [16.1K]

Answer:

2.7067 eV

Explanation:

h = Planck's constant = $6.626\times 10^{-34}\ m^2kg/s$

c = Speed of light = $3\times 10^8\ m/s$

$\lambda_0$ = Threshold wavelength = 459 nm

Work function is given by

$W_0=\frac{hc}{\lambda_0}\\\Rightarrow W_0=\frac{6.626\times 10^{-34}\times 3\times 10^8}{459\times 10^{-9}}\\\Rightarrow W_0=4.33072\times 10^{-19}\ J$

Converting to eV

$1\ J=\frac{1}{1.6\times 10^{-19}}\ eV$

$4.33072\times 10^{-19}\ J=4.33072\times 10^{-19}\times \frac{1}{1.6\times 10^{-19}}\ eV=2.7067\ eV$

The work function W0 of this metal is 2.7067 eV

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3 years ago

The weight of an object on a planet depends on not only its mass but also on its distance from the planest center. this table li

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Uranus is much much larger than Earth, so the distance from the planet's center is much much greater

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Which asteroid has more potential energy an asteroid that is closest to the sun or an asteroid that is farthest away from the su

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3 years ago

Kung hatiin sa tatlong pangkat ng 72 na bata isang bata mayroon sa bawat pangkat desisyon sentence​

Kung hatiin sa tatlong pangkat ng 72 na bata isang bata mayroon sa bawat pangkat desisyon sentence