What is the limiting factor of speed for an object falling through the air?

Answer:

4

Explanation:

because amplitude of a sound wave is related to loudness of the sound, so the higher the amplitude, the louder the sound

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Answer:

MIXTURE

1 In a mixture two or more substances are mixed together (elements or compounds)

2Therd is no fixed proportion of the constituents

3 The mixture may or may not be homogenous

4 There is no chemical reaction between the constituent substances

5 There cannot be a chemical formula for a mixture

6 Heat or any other type of energy is not required or released during the formation of a mixture

7 The constituents can be separated using simple physical processes

8 The properties of the constituents are retaied

COMPOUND

1 Two or more elements form a compound

2 The constituent elements combine in a definite proportion to form a compound

3 The elements are in a definite proportion in any part or fraction of the compound

4 There is a chemical reaction in the formation of a compound

5 A compound has always a chemical formula for a compound

6 Heat orany other energy is often required for the formation of a compound or released during the formation of a compound

7 The constituent elements can't be separated using simple physical processes in case of a compound

8 The properties of the constituent elements are not retained in the compound

Answer:

fire is a potential energy

Answer:

Explanation:

Why does the moon appear to change its shape as seen from Earth

Answer:

I'm 100% sure it's D. but if it isn't, sorry :(

Answer:

[tex]\lambda=5.70\times 10^{-7}\ m[/tex]

Explanation:

The frequency of a sodium vapor lamp, [tex]f=5.26\times 10^{14}\ Hz[/tex]

We need to find the wavelength of light. The relation between wavelength, frequency and speed of light is given by :

[tex]c=f\lambda\\\\\lambda=\dfrac{c}{f}\\\\\lambda=\dfrac{3\times 10^8}{5.26\times 10^{14}}\\\\\lambda=5.70\times 10^{-7}\ m[/tex]

So, the wavelength of light is equal to [tex]5.70\times 10^{-7}\ m[/tex].

Answer:

1. The elastic potential energy is 0.0176 Joules

2. The kinetic energy of the pinball the instant it leaves the spring is 0.0176 Joules

3. The speed of the pinball the instant it leaves the spring is approximately 2.42212 m/s

4. The height of the part where the pinball is located on the machine above the ground is approximately 0.213 meters

Explanation:

The spring constant of the pinball machine's plunger, k = 22 N/m

The amount by which the pinball machine's plunger is compressed, x = 0.04 m

The mass of the pinball ball, m = 0.006 kg

1. The elastic potential energy, P.E. = 1/2·k·x²

By substitution, we get;

P.E. = 1/2 × 22 N/m × (0.04 m)² = 0.0176 J

The elastic potential energy, P.E. = 0.0176 J

2. At the instant the pinball leaves the spring, the plunger and therefore the force of the plunger no longer acts on the pinball

Since there are no external forces acting on the pinball to increase the speed of the pinball after it leaves the spring, the velocity reached is its maximum velocity, and therefore, the kinetic energy, K.E. is the maximum kinetic energy which by the conservation of energy, is equal to the initial potential energy

Therefore;

K.E. = P.E. = 0.0176 J

The kinetic energy of the pinball the instant it leaves the spring, K.E.= 0.0176 J

3. The kinetic energy, K.E., is given by the following formula;

K.E. = 1/2·m·v²

Where;

v = The speed or velocity of the object having kinetic energy K.E.

Therefore, from K.E. = 0.0176 J, and by plugging in the values of the variables, we have;

K.E. = 0.0176 J = 1/2 × 0.006 kg × v²

v² = 0.0176 J/(1/2 × 0.006 kg) = 88/15 m²/s²

v = √(88/15 m²/s²) ≈ (2·√330)/15 m/s ≈ 2.42212 m/s

The speed of the pinball the instant it leaves the spring, v ≈ 2.42212 m/s

4. The height of the pinball is given by the following kinematic equation of motion;

[tex]v_h[/tex]² = u² - 2·g·h

Where;

[tex]v_h[/tex] = The velocity of the pinball at the given height = 1.3 m/s

u = v ≈ 2.42212 m/s (The initial velocity of the pinball as it the spring)

g = The acceleration due to gravity ≈ 9.8 m/s²

h = The height of the pinball above the ground

We get;

[tex]v_h[/tex]² = 1.3² = 2.42212² - 2 × 9.8 × h

∴  h = (2.42212² - 1.3²)/(2 × 9.8) ≈ 0.213

The height of the part where the pinball is located on the machine above the ground, h ≈ 0.213 m

Answer:

Vaccines contain weakened or inactive parts of a particular organism (antigen) that triggers an immune response within the body. Newer vaccines contain the blueprint for producing antigens rather than the antigen itself.

Answer: They give  you a portion of the thing its fighting so it gets your cells use to it so they can fight it off easily

Explanation:

Answer:

hot glue

Explanation:

-insert the hot melt cylinder into the gun and wait until it heats up;

-gently apply a layer of substance to the crack;

-spread the hot glue in a thin layer over the surface;

-wait until it freezes.

Answer:

WRITE A ONE PAGE ESSAY TO EXPLAIN THE AUTHOR'S PURPOSE IN WRITING HOM SMART ARE ANIMAL

Explanation:

Answer:

i do not know

Explanation:

im doing for education too

Answer:

I don't know too . want to help but I don't know how .

Explanation:

sorry bro . I want to have points eeek . :/

Answer:

I would say both

Explanation:

Each silicon atom has four valence electrons which are shared, forming covalent bonds with the four surrounding Si atoms.

Carbon contains four electrons in its outer shell. Therefore, it can form four covalent bonds with other atoms or molecules. The simplest organic carbon molecule is methane (CH4), in which four hydrogen atoms bind to a carbon atom (Figure 1).

Answer:

[tex]2.5[/tex]

Explanation:

[tex]0.0+5.0=5.0[/tex]

[tex]\frac{5}{2} =2.5[/tex]

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Answer:

Parallel Circuits

Explanation:

Loads can be operated on their own. If you had a series circuit, adding another light would dim the rest!

Answer:

b) Quartz Clock

Explanation:

It's is a very type of clock which uses the vibration of quartz crystals to measure time accurately

Answer:

Momentum is the product of mass and velocity. The two types of momentum are angular and linear.

Explanation:

Answer:

Explanation: (Momentum is mass * velocity. Its units, in the SI system are kilogram meter per second) What is Inertia?

In physics, momentum is the product of mass and velocity. The greater the product of this equation, the greater the momentum. In science, there are two types of momentum: angular and linear, which concern different types of moving objects. However, that is not where the definition stops. The word momentum is also used as part of everyday speech, and is one of the very few physics concept whose metaphorical definition is the same as its actual one.

I HOPE THIS ANSWER WILL HELP YOU!!!

Answer:

negatively

Explanation:

Answer:

Negatively charged

Explanation:

PLS ANSWER MY QUESTION TOO

Answer: B An action-reaction force pair

Explanation: Took the exam

The arrows in this photograph represent: An action-reaction force pair. Hence, option (B) is correct.

When two bodies interact, they exert an equal and opposite force on one another in accordance with Newton's third law of motion. Action-reaction forces are made up of these forces.

"When one body exerts a force on the other body, the first body experiences a force that is equal in magnitude in the opposite direction of the force which is exerted," according to Newton's third law of motion.

According to the above assertion, there are always two forces operating on the objects involved in an interaction. The forces are of identical magnitude, but the direction of the force acting on the first object is different from the direction acting on the second.

Learn more about force here:

https://brainly.com/question/13191643

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Answer:

Using the Newton equation

V²=U² +2as

Given; V=9.2m/s U = 0m/s( because it starts from rest)

S=26.2m.

9.2²=0²+2(26.2)a

a =9.2²/2(26.2)

a=84.6/52.4

a=1.60m/s²

Answer:

2.A

3.D

Explanation:

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Answer it 2n

Explanation:

Answer:

the answer is different

Explanation:

i took the test

Answer: A cold front occurs when a cold air mass advances into a region occupied by a warm air mass. If the boundary between the cold and warm air masses doesn't move, it is called a stationary front.

Explanation: Two types of occluded front exist: the warm-type and the cold-type. They’re distinguished by the relative temperatures of the air mass ahead of the occlusion – in other words, the air mass ahead of the original warm front – and the air mass behind the cold front. If the air behind the cold front is colder than the air ahead of the occlusion, it shoves beneath that air (because it’s denser) to form a cold-type occluded front. If the air behind the cold front is warmer than the air ahead, it rides over it to form a warm-type occluded front – which appears to be the more common case. In either situation, the lighter warm air representing the air mass originally between the warm and cold fronts sits above the boundary between the two cooler air masses.

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Answer:

D

Explanation:

F=ma

F of 5 kg rock = 49N

F of 10 kg rock = 98 N

Divide by respective masses to get acceleration, and of course you will get 9.8 m/s^2 for both.

Now, use potential energy equals kinetic energy. mgh=(1/2)mv^2 mass cancels out of the equation, since it's on both sides, so we can stop right there. We have algebraically determined that mass does not affect acceleration or velocity!

Hope this helped.