Answer:
1.2 Hz
Explanation:
Frequency: This can be defined as the number of cycles completed in one seconds. The unit of frequency is Hertz (Hz)
From the question above,
f = N/t.................... Equation 1
Where f = frequency, N = number of wave or cycle completed by Johnny, t = time take to complete the waves.
Given: N = 12 waves, t = 10 s
Substitute into equation 1
f = 12/10
f = 1.2 Hz
a baseball player throws 4 balls every 20 seconds. what is his throw frequency
Answer:
Frequency, f = 0.2 Hz
Explanation:
We have,
A baseball player throws 4 balls every 20 seconds.
It is required to find the frequency of the baseball.
Frequency of an object is defined as the number of times an event occurs. It is given by number of throws per unit time. It can be given by :
[tex]f=\dfrac{4}{20}\\\\f=0.2\ Hz[/tex]
So, the frequency of his throw is 0.2 Hz.
which force causes a soccer ball to take a curved path when it is kicked?
rotation
acceleration
mass
velocity
Answer:
velocity
Explanation:
velocity is the only option that deals with change in direction, or best put by this website i read about physics; "Velocity measures motion starting in one place and heading toward another place."
Answer: Rotation
Explanation: took quiz :)
ANSWER ASAP!! EASY!!
just fill in the blanks
Answer:
the first one is stay in motion and stay at rest
the second one is unbalanced and accelerate
i can't see the third one but i think it is equal because it may say Newton's third law states that...
Explanation:
Answer:
1. Stay in motion
2. Stay at rest
3. Unbalanced
4. Accelerate
Explanation:
Fill in the Blanks in this order and you will get it correct
When waves traveling in the same medium meet, a new
wave may be produced. Use the slider to create the resulting
wave with the largest amplitude.
Answer:
if there is any phase between the waves this value is less
if the sine function is ±, the amplitude of the total wave is
A_total = A₁ + A₂ + A₃+ A₄ +A₅
Explanation:
When several waves travel in the same direction, the process of adding them can take place.
y_total = ∑ [tex]y_{i}[/tex]
where
y_{i} = A_{i} sin (k x - w t + Ф)
with fi the phase of each wave
To produce the largest possible result, all waves must come with the same phase
y_total = (A₁ + A₂ + A₃ + A₄ + A₅) sin (k x - wt)
if there is any phase between the waves this value is less
if the sine function is ±, the amplitude of the total wave is
A_total = A₁ + A₂ + A₃+ A₄ +A₅
Answer:
Explanation:
Just got it right
Which term describes the bending of a wave as it travels into a different
medium?
A. Reflection
B. Interference
C. Diffraction
D. Refraction
Answer:
Refraction
Explanation:
Answer:
a
Explanation:
Which of the following types of stars is most likely to end up as a red supergiant? In Graph A, the curve peaks at 800 nm, in the red section of the visible light spectrum. In Graph B, the curve peaks at 550 nm, in the green section of the visible light spectrum. In Graph C, the curve peaks at 450 nm, in the blue section of the visible light spectrum. In Graph D, the curve peaks at 300 nm, in the violet section of the visible light spectrum. A B C D
Answer:
B
Explanation:
hope this helps!
Plz answer both thanks:)
Answer:
Acceleration.
Explanation:
F = m x a
The 'a' in formula above is acceleration.
Force is simply defined as the product of mass and acceleration. Mathematically, it is expressed as
Force(F) = Mass(m) x acceleration (a)
F = m x a
Bottom 2 questions on the page:
Answer to BOTH is "acceleration'.
does a atom power a star
Answer: yes
Explanation: All atoms larger than hydrogen and helium have been made within the thermonuclear furnace of a star, powered by nuclear fusion. This is the process in which smaller atoms, i.e., hydrogen and helium, are smashed together to form larger elements, such as carbon.
If a 42kg rolling object slows from 11.5 m/s to 3.33 m/s how much work does friction do?
Explanation:
work done by friction = 1/2 x 42 x ( 3.33^2 - 11.5^2)
= 21 ( 11.08 - 132.25)
= 21 ( - 121.17 )
= - 2544.57 J
Scientists have discovered fossils of ancient
whalelike animals that had legs instead of
flippers. This evidence most likely indicates
that the ancestors of present-day whales
A lived in the ocean.
B lived on land.
C evolved gradually rather than during
short periods of rapid change.
D never became extinct.
A charge is moving in a magnetic field that points to the
left
What direction can the charge move and experience no
magnetic force? Check all that apply
up
down
left
right
into the screen
out of the screen
Which force causes tectonic plates to change at plate boundaries
Answer:
The main driving force of plate tectonics is gravity.
Explanation:
Gravity causes tectonic plates to change at plate boundaries
The diagram shows the schematic symbol of a transistor.
Which is the correct label for the part of the transistor
marked with an X?
Х
base
outlet
gate controller
electrical supply
Answer:
base
Explanation:
In the schematic symbol of a transistor, the arrow in the symbol indicates the direction of flow. There are three terminals namely, emitter, collector and base.
When you apply 0.7V from base to emitter you will turn the transistor ON and allow a current to flow from collector to emitter.
With the x in the picture the base must be indicated because all other answers do not make sense.
The correct label for the part of the transistor marked with an X is base.
What is transistor?A transistor is a semiconductor device used to amplify the electrical signals and power. The transistor is one of the important part of modern electronics. It is consist of semiconductor material, have three terminals for connection.
In the place of mark X of a transistor, the arrow in the symbol indicates the direction of flow. There are three terminals called as emitter, collector and base.
The base is indicated by the mark X in the picture.
Learn more about transistor.
https://brainly.com/question/19204091
#SPJ2
Which is an example of a mixture?
A. water
B. trail mix
C. hydrogen
D. carbon dioxide
Answer:
B. Trail Mix
Explanation:
There are different kinds of nuts, seeds, etc. This is a mixture
Which best explains why making a pancake from batter is an example of a chemical change?
The pancake that forms is a different state of matter.
The change from batter to pancake can be reversed.
A new substance forms when the batter is cooked.
The batter changes shape when it is cooked.
Answer:
first one
Explanation:
What is gravitational potential energy?
A) energy resulting from the attraction between two changes
B) energy resulting from the repulsion between two masses
C) energy resulting from the repulsion between two charges
D) energy resulting from the attraction between two masses.
Answer:
D). energy resulting from the attraction between two masses.
Explanation:
What is the mass of a car that hits a deer with a force of 3,000 N if it started traveling at a speed of 50 m/s but slowed down to 25 m/s in 5 s before hitting the deer?
Answer:
Can’t u just google it?
Explanation:
Which statement is true about the ideal mechanical advantage of a third-class lever?
A It is always greater than 1.
B It is always equal to 1.
C It is always less than 1.
D It can be less than, greater than or equal to 1.
Answer:
It is always less than one.
Explanation:
Because the load covers more distance than the force when they move in the same direction.
[tex]<marquee>♥️Mark as brainliest♥️</marquee>[/tex]
What happens to the liquid propane when it hits the warmer air?
Answer:after -44 degrees it turns into liquid and when it becomes vapor when it gets warmer
Explanation:
in order for gravitational potential energy to be stored, there must be _____.
1. An object position at some height in a gravitational field
2. an object positioned at a height of 0 in a gravitational field
3. an object positioned at some height outside a gravitational field
4. an object in motion
Answer: 1
an object positioned at some height in a gravitational field
Explanation:
Gravitational potential energy of an object is the energy stored due to position of the object or position at certain height relative to zero position.
Gravitational potential energy can also be expressed as object position at some height above or below zero position in a gravitational field
I think 1 and 2 make sense. But 1 make more sense than 2
what is the gain in GPE when a brick of 2.00 kg is lofted up by 11.5 m?
Answer:
225.63 j
Explanation:
GPE = MGH
M= 2.00 KG
H= 11.5 m
g = 9.81 m/s2
gpe = ?
2x11.5x9.81 = 225.63
How far would a baseball travel in 0.5 s if it is thrown at a speed of 20 m/s?
40 s
10 m
O 10s
40m
Answer:
10 m
Explanation:
20 ÷ 2 = 10
This is because since it is only half a second, it will only travel half of the distance that is shown in meters per second.
How do stars make energy
Answer:
nuclear fusion
Explanation:
atoms of hydrogen are ripped apart and fuse to form helium which release energy
Answer:
Energy is produced in a star's center, or core, where pressures are enormous and temperatures reach 27 million°F (15 million°C). This causes nuclear fusion—atoms of hydrogen are ripped apart and fuse (join) to form helium. These reactions release vast amounts of energy, which makes the star shine.
people are more likely to treat someone kindly if they've you that person's bad behavior as the result of an external attribution
true or false
Answer:
True
Explanation:
Answer:
True
Explanation:
When waves meet, and form either a larger or smaller amplitude, it is called _______
a. absorption
b. reflection
c. inference
d. refraction
Answer:
Explanation:
Reflexión
In order for generators to work, this type of
energy must be harvested:
A. chemical energy
B. neuclear energy
C. mechanical energy
D. electrical energy
In order for generators to work, mechanical energy must be harvested. (C)
If a 42kg rolling object slows from 11.5m/s to 3.33m/s how much work did friction do
Answer: 1608.39 J
Explanation: Given that the
mass M = 42kg
U = 11.5m/s
V = 3.33m/s
how much work did friction do
Work done = Force × distance
Work done = Ma × distance
But acceleration a = V/t
Work done = M × V/t × d
Work done = M × V × d/t
Where d/t = velocity
Therefore,
Work done = M × U × V
Work done = 42 × 11.5 × 3.33
Work done = 1608.39 J
Along with X-Rays, which high frequency EM waves can be used to destroy
cancer cells? *
Radio
Microwave
Infrared
Gamma
ANSWER THIS ASAP
Question 2-3
Two speakers create identical 240 Hz sound waves. A person is 1.47 m from Speaker 1. What is the MINIMUM distance to Speaker 2 for there to be destructive interference at that spot? (Hint: v= lambda f=343 m/s) (Unit = m)
Answer: 2.90 metres
Explanation:
Distance of speaker 2 =?
Distance of speaker 1 = 1.47m
Velocity = 343
f = 240Hz
For constructive interference to occur:
Difference in distance or path = wavelength
For minimum distance, n = 1
Distance 2 - distance 1 = nλ
Recall λ = v/f
V = Velocity ; f = frequency
Distance 2 - distance 1 = v/f
Distance 2 - 1.47 = (343/240)
Distance 2 = 1.429 + 1.47
Distance 2 = 2.899 meters
Minimum Distance of speaker 2 for their to be constructive interference = 2.90meters
Answer:
The answer would be 0.755415