PHYSICS HIGH SCHOOL

Compared to yellow light, orange light has A. a different polarization.
B. a faster wave velocity.
C. the same frequency.
D. a longer wavelength.

Answers

Answer 1
Answer:
Orange light always has a longer wavelength than yellow light. 
That's how your eye and brain decide that it's orange and not yellow.

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What force is required to accelerate a body with a mass of 15 kilograms at a rate of 8 m/s2?A. 23 kg B. 120 N C. 23 N D. 1.875 kg
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A stuntman jumps from the roof of a building to the safety net below. How far has the stuntman fallen after 1.6 seconds?

Answers

The distance covered by the stuntman in 1.6 meters after he jumps form the roof of a building is 12.544 meters.


What is acceleration?

Acceleration is the rate of change of the velocity of an object with respect to the time taken to travel. Acceleration is a vector quantity. The orientation of an object's acceleration can be given by the orientation of the net force which is acting on that object.

The stuntman fallen after 1.6 meters after he jumps from the roof, the distance covered by the stuntman is:

s = ut + 1/2 at²

s = distance or displacement,

u = initial velocity,

t = time taken,

a = acceleration of the object

s = 0 × 1.6 + 1/2 × 9.8 × (1.6)²

s = 0 + 4.9 × 2.56

s = 12.544m

Therefore, the distance covered by the stuntman is 12.544 meters.

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ok.....

Given,
Time = 1.6 seconds

We know,
initial velocity = 0 m/s²
acceleration (due to gravity) = 9.8 m/s²

Now,
We know,
s=ut+ (1)/(2)at^2\n\n Substituting \ the \ given\ and\ known\ values,\ we\ get,\n \n s=(0)(1.6)+ (1)/(2)(9.8)(1.6)^2\n\nNow,\ Using\ the\ calculator\, we\ get,\n\n s = 0+12.544\n\ns = 12.544\ m

So, the stuntman has fallen 12.544 meters.

Select all that apply.A vector always consists of _____.

A) a force
B) mass
C) size
D) direction

Answers

C) size and D) direction
Vector quantities possess both size and direction while scalars possess only size.

Answer:The correct options are (C)and (D) are correct.

Explanation:

A vector is defined as quantity which have magnitude and direction. it is represented by the arrow whose direction is same as that of the quantity.Fro example : velocity, force, acceleration , work done etc.

Magnitude is a term which means size or extent or importance of something.

From this we can conclude that vectors always consists of direction and size(magnitude). Hence options(C)and (D) are correct.

Please help! This is due in 10 minutes!! I will mark brainliest asap

Answers

The object is at rest. This is because time is going by and there’s no distance being added
Third option is the answer aka the object is resting hope this helps you

A hydrogen atom has one proton, two neutrons, and no electrons. Is this atom neutrally charged? Explainyour answer.

Answers

It is an ion.

What is hydrogen atom?

A hydrogen atom is an atom of the chemical element hydrogen.

The electrically neutral atom contains a single positively charged proton and a single negatively charged electron bound to the nucleus by the Coulomb force.

An atom is a neutral species.

Hence, it must have same number of electrons and protons. On other hand, ions have charge.

So, the number of protons and electrons are not same.

According to the question,

Hydrogen has one proton, two neutrons, and no electrons.

This signifies that overall charge of species is +1.

Hence,  it is an ion.

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Even if it isn't a hydrogen atom, it would be positive because the proton is positively charged and then there are no other charges, so it's positive.

Energy is measured in watts and work is measured in joules. true or false?

Answers

it's true
work measure by joule.
Energy = work/time
= joule/s .
and joule/s represents watt

The tendency of an object to resist any change in its motion is known as?

Answers

Answer:

Inertia

Explanation:

The tendency of an object to resist any change in its motion is known as its inertia. The first law of motion is also known as the law of inertia. The inertia of an object can change its speed and the direction of motion. It is related directly to the mass of an object.

A body having more mass will have more inertia while a body having less mas will have less inertia.
It's inertia. A rule that you see every day, for example a brick will stay in the same spot unless a force acts on it.
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