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3 years ago

14

HELP

1 answer:

kotykmax [81]3 years ago

3 0

I go with D .

Explanation:

I go with D because neither if the ballons have the same thermal energy.

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Which two options are forms of kinetic energy?

juin [17]

Answer:

B. Thermal energy

E. Sound energy

Explanation:

Thermal and sound energy is kinetic energy.

Kinetic energy is the energy that results as a function of the motion of a body or the particles of the medium.

Sound energy is transmitted by the vibration of the particles in the air. The vibration leads to movement of the particles and hence, kinetic energy is produced.

Thermal energy originates as a result of the temperature differences in a body. This temperature difference leads to the increase in the kinetic energy of some particles which also causes vibration and motion of the particles.

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3 years ago

Give two explains food that are good sources of protein

Ad libitum [116K]

Answer:

Chicken and peanut butter lol

Explanation:

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3 years ago

An insulated lamp bulb is on the bottom of a swimming pool at a point 2.5 m from a wall; the pool is 2.5 m deep and filled to th

pashok25 [27]

Answer:

option A

Explanation:

given,

lamp position from pool wall = 2.5 m

height of the pool = 2.5 m

now,

$tan \theta = \dfrac{P}{B}$

$\theta =tan^{-1}(\dfrac{2.5}{2.5})$

$\theta =45^0$

from the triangle

θ = i = 45°

using Snell's law

n₁ sin i = n₂ sin r

n₁ =4/3 n₂ = 1

now,

$\dfrac{sin r}{sin i}=\dfrac{n_1}{n_2}$

$\dfrac{sin r}{sin 45^0}=\dfrac{\dfrac{4}{3}}{1}$

$sin r=\dfrac{1}{\sqrt{2}}\times \dfrac{4}{3}$

r = sin⁻¹(0.9428)

r = 70.5°

hence, the correct answer is option A

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4 years ago

Maverick and goose are flying a training mission in their F-14. They are flying at an altitude of 1500 m and are traveling at 68

lions [1.4K]

Answer:

The bomb will remain in air for <u>17.5 s</u> before hitting the ground.

Explanation:

Given:

Initial vertical height is, $y_0=1500\ m$

Initial horizontal velocity is, $u_x=688\ m/s$

Initial vertical velocity is, $u_y=0(\textrm{Horizontal velocity only initially)}$

Let the time taken by the bomb to reach the ground be 't'.

So, consider the equation of motion of the bomb in the vertical direction.

The displacement of the bomb vertically is $S=y-y_0=0-1500=-1500\ m$

Acceleration in the vertical direction is due to gravity, $g=-9.8\ m/s^2$

Therefore, the displacement of the bomb is given as:

$S=u_yt+\frac{1}{2}gt^2\\-1500=0-\frac{1}{2}(9.8)(t^2)\\1500=4.9t^2\\t^2=\frac{1500}{4.9}\\t=\sqrt{\frac{1500}{4.9}}=17.5\ s$

So, the bomb will remain in air for 17.5 s before hitting the ground.

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3 years ago

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C. Gravity acts on all objects in the universe!

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3 years ago