PHYSICS HIGH SCHOOL

The discovery of photons is an example of which aspect of electromagnetic radiation?a) wave behavior

b) particle behavior

c) interference

Answers

Answer 1
Answer:

Answer: Particle Behavior

Explanation:
Answer 2
Answer:

Answer:

Particle Behavior

Explanation:

I did Gradpoint :)

Related Questions

The atomic number of an element is equal to the number of _____ contained in one atom of that element.
A solution is measured to have a pH of 2.3. What is most likely also true about the solution?1.)It has a low hydroxide ion concentration. 2.)It has a low hydronium ion concentration. 3.)It is neutral. 4.)It has no H2O molecules.
A gas occupies a volume of 20 cubic meters at 9,000 pascals. If the pressure is lowered to 5,000 pascals, what volume will the gas occupy?
How does the electric potential energy between two charged particles change if one particle's charge is increased by a factor of 2?
A 9.0 volt battery is connected to four resistors in a parallel circuit. The resistors have 7.0 Ω, 5.0 Ω, 4.0 Ω, and 2.0 Ω respectively. What is the total current in the circuit?

While skateboarding at 19 km/h, Alana throws a tennis ball at 11 km/h to her friend Oliver. If Alana is the reference frame, the speed of the tennis ball is

Answers


Well, you see, I don't think Alana really is the reference frame. 
Call me paranoid, but I think you changed the reference frame
during the question, and didn't tell us.

In which reference frame is the 19 km/hr measured ?
It CAN'T be Alana's reference frame.  Your own reference
frame moves along with you, and you can't move in it, even
if your name is Alana.

If Alana is the reference frame, and she throws the tennis ball
at 11 km/hr, then the speed of the ball is 11 km/hr in Alana's
reference frame.  Her reference frame moves with  her, so
it makes no difference how fast she is skateboarding in any
other reference frame, who she throws the ball at, or whether
or not he sees it coming and catches it.

Yes, this stuff can get confusing.  And if you think it's bad now,
wait till you start reading some of Prof. Einstein's stuff, where
two people in the same reference frame can watch the same
tennis ball, and not even agree on how fast it's moving, because
THEY're both moving and their own motion makes their rulers
and clocks change !  So they measure different speeds, and
they're both right !

But I got distracted.  I'm sorry.  The point I'm trying to make,
right now when you're just starting to learn reference frames,
is that EVERY time you say a speed, you have to tell which
reference frame the speed is in.  Because, as you're starting
to learn, the same object can have a different speed in every
reference frame.

And, just in case you're thinking about this later today
and you want to ask "Which one is the REAL speed  ?" . . .
THAT's the whole point of learning about reference frames !
There is NO SUCH THING as REAL speed.  It ALWAYS
depends on which reference frame it's measured in.  They're
all different, they're all real, and they're all correct.

The first thing we must do for this case is to define a frame of reference.

We know that, the frame of reference for this case is Alana.

Therefore, the tennis ball has a speed relative to Alana.

The speed relative to Alana, is the same speed with which Alana throws the tennis ball.

Therefore, the speed of the tennis ball is:

v = 11 Km/h

Answer:

The speed of the tennis ball is:

v = 11 Km/h

You own a high speed digital camera that can take a picture every 0.5 seconds. You decide to take a picture every 0.5 seconds of your physics teacher as she drops a watermelon off the top of the school. After you develop and analyze the pictures, you realize that the distance the watermelon falls from the teacher in each new picture isA) the same in each picture.
B) gradually less in each picture.
C) gradually more in each picture.
D) proportional to the mass of the watermelon.

Answers

-- There is no need to develop the pictures.  They are available immediately in a digital camera.

-- There is no change in the teacher from one picture to the next.

-- The distance the watermelon falls from the teacher in each new picture is more in each picture than in the picture before it. (C)

Explain why solar energy is considered an inexhaustible source of energy

Answers


-- The amount of energy radiated by the sun is not affected at all by how much
of it we use or don't use.

-- The sun is not expected to quit shining on us, or to change its rate of energy
output, at any time within the next several many human lifetimes.

Solar energy is going to keep arriving here, continuously, at the same rate,
free of charge, for a long long time, whether we feel like using it or not.  It's
the closest thing to manna from heaven that has been seen around here for
thousands of years.

If a 100-N net force acts on a 50-kg car, what will the accelaration of the car be?

Answers

2m/s^2   how to get it: since you already know the force and mass and the formula for force is force=(mass)(acceleration) you isolate the variable of acceleration which is a by dividing (m)(a) by (m) which equals f/m=a then you plug in your known numbers where they go so f=100N m=50kg   100N/50kg= 2 therefore the acceleration is 2m/s^2  hope this helped you!!!

Your friend won the race that you were both running. Instead of being gracious, your friend made fun of you for losing, and now you don't want to run anymore. What is this an example of?Positive peer pressure
Negative peer pressure
Positive peer influence
Negative peer influence

Answers

negative peer influence

negative peer influence

"The radius of a sphere is increased by 25%. Find the percentage increase in surface area."

Answers

Answer:

Therefore, when the radius of a sphere is increased by 25%, the surface area increases by approximately 56.25%.

Explanation:

The surface area of a sphere is given by the formula:   Surface Area = 4πr^2   where r is the radius of the sphere.  

To find the percentage increase in surface area when the radius is increased by 25%, we can follow these steps:  

1. Let's assume the initial radius of the sphere is r.

2. If the radius is increased by 25%, the new radius will be 1.25r (since 25% is equivalent to multiplying by 1.25).  

3. Now, we can calculate the initial surface area (A1) using the formula: A1 = 4πr^2.  4.

Similarly, we can calculate the new surface area (A2) using the formula: A2 = 4π(1.25r)^2 = 4π(1.5625r^2) = 6.25πr^2.  

5. The percentage increase in surface area can be calculated as follows:   Percentage Increase = ((A2 - A1) / A1) * 100

 6. Plugging in the values we obtained earlier,

we have:  Percentage Increase = ((6.25πr^2 - 4πr^2) / 4πr^2) * 100  = ((2.25πr^2) / 4πr^2) * 100  = 56.25%  

Other Questions
Friction is a force, too. How can friction help you in your daily life? How can it hurt you?ASAP PLEASEEEEE
How far can light travel in one year?A. 30 million km B. 10 trillion km C. 300,000 km D. 100 billion km
What are the factors on which pressure of liquids depends??
A rod of mass M = 116 g and length L = 49 cm can rotate about a hinge at its left end and is initially at rest. A putty ball of mass m = 14 g, moving with speed V= 6 m/s, strikes the rod at angle A = 37º a distance D=L/4 from the end and sticks to the rod after the collision. (A) What is the total moment of inertia, 1, with respect to the hinge, of the rod-ball-system after the collision? (B) Enter an expression for the angular speed w of the system immediately after the collision, in terms of m, V, D, 0, (C) Calculate the rotational kinetic energy, in joules, of the system after the collision