Answer: 5m
(10m) sin 30
=5m
The vertical displacement of the circus performer in m is 5m.
What is displacement?The displacement is the shortest distance travelled by the particle. It is the vector quantity which represents both the magnitude and direction.
A circus performer walked up and to the right for a total displacement of 10 m along a diagonal tightrope angled 30° above the ground.
We know the hypotenuse is 10m (diagonal) and the angle above the ground is 30°
The displacement will be sin (30) of hypotenuse.
Displacement = 10 sin (30)
d = 5m
Thus, the vertical displacement of the circus performer is 5 m.
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A fire is burning in a fireplace. Where is the radiation?
A. You touch warm bricks next to the fireplace
B. You can feel the heat from across the room
C. Heat is rising up from the chimney
Which of the following best defines speed?
A. It is an objects speed at a specific point in time
B. It is the distance traveled by an object in a specific direction
C. It is a measure of how far an object moves over a certain amount of time
D. It is the total time over the distance
A stone is thrown straight up in the air. If g represents the acceleration due to
gravity, which one of the following statments about the stone is false?
When the stone reaches the top of its flight, its acceleration is still g.
As the stone rises, its potential energy decreases.
When the stone reaches the top of its flight, its energy is zero.
As the stone rises, it is accelerated downward.
As the stone rises, its kinetic energy decreases.
Answer:
The correct false statement is;
As the stone rises, its potential energy decreases
Explanation:
When the stone is thrown straight up into the air, the initial velocity, u, progressively decreases according to the following equation;
v = u - g·t
Where;
v = The final velocity
g = The acceleration due to gravity = 9.81 m/s²
t = The time taken
Therefore whereby, the kinetic energy. K.E. is given by the equation , K.E. = 1/2 × m × u², as u reduces, the kinetic energy reduces
However, the potential energy, P.E. is given as P.E. = m × g × h
Where;
h = Height
m = The mass of the stone
Therefore, as the stone rises, the potential energy increases.
Which device converts chemical energy directly into electrical energy?
A.
A battery
B.
A generator
C.
A light bulb
D.
A motor
Answer:
A
Explanation:
Name me brainliest plzzzzz
Which form of energy does Theodore Roosevelt Lake have as the water collects in the
reservoir behind the dam?
A.heat
B.mechanical kinetic
C.mechanical potential
D.solar
Explain why
I need help on this, please tell me what it is.
Answer:
maria is right.
Explanation:
what do acid increase the concentration of in a solution
Answer:
Hydronium ([tex]H_{3}[/tex]O)
What are greenhouse gases? Can you name any?
What is the height of a 50 kg person that has a potential energy of 4900J?
245,000m
98 m
10 m
Answer:
10 m
Explanation:
PE = mgh
m = 50kg
g= 9.8 m/s^2
h=?
so,
4900= 50×9.8× h
50h = 4900/9.8
50h = 500
h = 10 m
please help me quickly
Answer:
not moving
Explanation:
Light travels in a transparent material at 2.5 x 10 m/s. Find the index of refraction of the
material.
We have that for the Question "Light travels in a transparent material at 2.5 x 10 m/s. Find the index of refraction of the material." it can be said that
From the question we are told
Light travels in a transparent material at 2.5 x 10 m/s. Find the index of refraction of the material.
Generally the equation for the index of refraction is mathematically given as
[tex]n=\frac{C}{v}\\\\Therefore\\\\n=\frac{3*10^8}{2.5 * 10 }\\\\n=12000000\\\\[/tex]
Therefore
The index of refraction of the material is
n=12000000
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If you are in a car at a stop sign and then the driver
presses on the gas pedal really hard, which way is the car
accelerating?
Answer:
it wont be because the hand brake would be on
Questions
1. From your data, what factor(s) affect the speed of a wave? Explain your reasoning.
2. The pitch made by a musical instrument is dependent on the frequency of the wave. Frequency is the inverse of period. What impact do you think the frequency of a wave has on the wave speed?
3. What happens to wave speed as it moves from a medium of low density to one of high density? Explain your response with respect to this lab.
4. When a stringed instrument is out of tune, the player with tighten or loosen the string. If the instrument is initially flat, should they tighten or loosen the string? In the context of this experiment, explain your reasoning.
Present Your Findings or Questions
Using data and observations, answer the questions and provide your data tables in the essay box below.
Answer:
Initial velocity describes how fast an object travels when gravity first applies force on the object. On the other hand, the final velocity is a vector quantity that measures the speed and direction of a moving body after it has reached its maximum acceleration.
Explanation:
Answer:
1. The speed of the wave is affected by wavelength frequency because waves travel through a medium and sound, ocean waves and seismic waves, etc. are the physical properties of the medium that determines the speed of the mechanical waves.
2. I think the frequency of the wave doesn't have any effect on the wave speed. Only the characteristics of the medium the wave is traveling through determines its speed.
3. As a wave moves from a medium of low density to a higher density the wave speed increases and when a wave moves from a higher density to a medium density the wave speed decreases because the wave length shortens causing the wave speed to lower.
4.If the instrument is initially flat they should tighten it because once it is tightened there is going to be force applied to the gears, and after you've reached the correct pitch the gears won't be able to move. So ultimately, you will be able to meet the intended pitch you were going for.
why would a rocket fall vertically downwards if it was launched vertically upwards
Answer:
It would because the shape of the rocket is designed to be able to slice through the air as smooth as possible and now you may be thinking that air is already smooth but when you try to push something as large and heavy like a rocket then the shape of the rocket will be very important. The bottom of the rocket is flatter then the top so it is not designed to fly smoothly through the air. So the rocket would fall vertically downward(If it was still in one piece)because of it's shape. It is easier for the top of the rocket to go smoothly through the air then the bottom.
Explanation:
I am 90% sure this is correct but if I'm not please tell me
To solve this we must be knowing each and every concept related to rocket. Therefore, a rocket fall vertically downwards if it was launched vertically upwards because the bottom of a rocket is flatter than the top.
What is rocket?A rocket is indeed a vehicle that accelerates by employing jet propulsion rather than the surrounding air. A rocket engine generates thrust by reacting to high-speed exhaust.
The reason would be that the shape of a rocket is meant to slice through air as smoothly as possible. You may assume that air already is smooth, but when we try to push anything as massive and heavy as a rocket, the shape of a rocket becomes quite crucial.
Because the bottom of a rocket is flatter than the top, it isn't designed to glide through the air gracefully. Because of its form, the rocket will fall vertically downward . The tip of the rocket travels more smoothly in the air than the bottom.
Therefore, a rocket fall vertically downwards if it was launched vertically upwards because the bottom of a rocket is flatter than the top.
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A player kicks a football into the air. It slows to a stop at its highest point in the air before falling to the ground. Which statement accurately describes the motion of the football?
Answer:
The answer is "The ball slows down in the air due to an unbalanced force "
Explanation:
If plays kick the ball, its object is mainly controlled by various forces its player's power as well as the other gravitational force, which acts in such a direction often focused from around Earth.
Its force of its player will decrease because as strength of gravity is consistent, enabling both forces to interfere, therefore slowing the speed of football.
Tyler drives 50km north. Tyler then drives back 30km south. What distance did he cover? What was his displacement?
Answer:
80 km is distance and 30km north is displacement
Explanation:
distance= 50+30=80km
displacement= 50-20=30
his displacement is 30km north
When Tyler drives 50 km north and then drives back 30 km south, we have:
1. The distance that he covers is 80 km.
2. Tylor's displacement is 20 km.
1. The distance is a scalar that is given by the sum of the kilometers traveled by Tyler as follows:
[tex] d = d_{1} + d_{2} = 50 km + 30 km = 80 km [/tex]
Hence, the distance traveled by Tyler was 80 km.
2. The displacement is a vector that depends on the direction of travel. Takin the north direction as positive we have:
[tex] x = x_{1} + x_{2} = 50 km + (-30 km) = 20 km [/tex]
Therefore, Tyler's displacement is 20 km.
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Can someone tell me how we got this answer please like what rule should I use?
Answer:
W = V Q energy = work / charge * charge
Q = I t charge = current * time
V = W / (I * t)
V = 3 * 10E8 J / (1.5 * 10E4 amps * 2 * 10E-4 sec)
V = 10^8 volts
You see I am having issues with my Cart and think a thunder strike has burnt all my spark plugs and a banana has gotten stuck some where
Answer:
umm??????? i dont understand
Explanation:
Stefan has to drive 8 miles south and 3 miles east to get to work. Find his distance and displacement.
Stefan's distance and displacement are 11 miles and 8.54 miles southeast
The distance can be calculated directly by adding up the individual distance.
d = 8+3d = 11 milesTo calculate the displacement of Stefan, we make use of the Pythagoras theorem.
From Pythagoras theorem,
Formula:
a² = b²+c²................ Equation 1Where:
a = Stefan's resultant displacementb = Stefan's displacement to the southc = Stefan's displacement to the east.From the question,
Given:
b = 8 milesc = 3 miles.Substitute these values into equation 1
a² = 8²+3²a² = 64+9a² = 73a = √(73)a = 8.54 mile southeast.While the displacement is 8.54 miles southeast.
Hence, Stefan's distance and displacement are 11 miles and 8.54 miles southeast.
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1) A ball is dropped from the Eiffel Tower (300 m), how long would it take for the ball to reach a velocity of 65 m/s? How far did the ball go in that time?
Answer:
Explanation:
If you drop a ball from
the top of a building it
gains speed as it falls.
• Every second, its
speed increases by
10 m/s.
• Also it does not fall
equal distances in
equal time intervals
• If the acceleration = 0 then the velocity is
constant. [remember that acceleration is
the rate of change of velocity]
• In this case the distance an object will
travel in a certain amount of time is given
by distance = velocity x time
• For example, if you drive at 60 mph for
one hour you go 60 mph x 1 hr = 60 mi.
40 points and brainliest plz helppp luv yah thxx
A car moving at 10 m/s slows to a stop. It moves 25 meters forward while braking.
1. What is its braking acceleration?
Explain how you found your answer.
2. How much time does it take to slow to a stop?
Explain how you found your answer.
Answer:
hey want you to separate the energy’s and put them in the categories they go in like why are They different what is chemically different about them? Etc.why do they act differently.. do they act the same in some ways? Think about that
Explanation:
The output of a solar panel powers a small pump. The pump operates a garden water fountain. The output of the solar panel is 10 V and the current supplied to the pump is 0.25 A. Calculate the electrical power generated by the solar panel.
The power generated by solar panel will be "2.7 W".
According to the question,
The values are:
Output of solar panel,
10 VCurrent,
0.25 AThe electrical power generated will be:
→ [tex]P = VI[/tex]
By substituting the given values is the above formula, we get
→ [tex]= 10\times 0.27[/tex]
→ [tex]=2.7 \ W[/tex]
Thus the above answer is right.
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When the energy of a wave increases, what happens to the amplitude?
Answer:
The energy transported by a wave is directly proportional to the square of the amplitude. So whatever change occurs in the amplitude, the square of that effect impacts the energy. This means that a doubling of the amplitude results in a quadrupling of the energy.
Explanation:
When the energy of a wave increases, the amplitude also increases. This is because the amplitude of the wave is directly proportional to the energy of a wave.
What is the amplitude of a wave?The amplitude of a wave may be defined as the maximum displacement or distance moved by a point on a vibrating body or wave measured from its equilibrium position. It is equal to one-half the length of the vibration path.
It is the principle of physics that when the amplitude of the wave is higher, the energy also gets higher. To summarise, waves carry energy. The amount of energy they carry is related to their frequency and their amplitude. The higher the frequency, the more energy, and the higher the amplitude, the more energy.
Therefore, when the energy of a wave increases, the amplitude also increases. This is because the amplitude of the wave is directly proportional to the energy of a wave.
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What is the amount of work required to increase a 1100 kg car's speed from 20.0 m/s to 50.0 m/s?
How do atoms of different non metals stabilize themselves?
Pls help
Answer:
by taking other atoms that have one shell and putting it i the spot that they need t in
Explanation:
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Could you pick up a nail using the curved part of the horseshoe magnet farthest from the poles?
Answer & Explanation:
One can pick up a nail using the curved part of the horseshoe magnet farthest from the poles. A horse shoe magnet has magnetic fields all around it. In the presence of magnetic force fields, any magnetic object will be attracted to it.
One can pick up a nail using the curved part of the horseshoe magnet farthest from the poles.
What is magnet?A substance which is negative charged at one end and positive charged at another end creating the magnetic field around it.
A nail is a magnet which can attract the particle which are charged.
A horse shoe magnet also has magnetic fields around it. In the presence of magnetic force fields, any magnetic object will be attracted to it.
Thus. one could pick up a nail using the curved part of the horseshoe magnet farthest from the poles.
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Similarities and differences between natural and synthetic for sugar
Answer:
THE REAL STUFF
For starters, sugar is sugar, no matter how it’s marketed, priced or packaged. All sugar offers the same number of calories, although some may be less processed. It seems like every third day a “new” natural sugar emerges as the next best thing. Take for example, the increasingly popular coconut sugar or maple sugar, which are actually just fancy names with a heftier price tag for one ingredient: sugar. Your body can’t tell the difference between raw coconut sugar or processed table sugar, all sugar is metabolized and digested the same. While some more natural forms of sugar may contain a bit more minerals and haven’t undergone as much refinement, they really aren’t any healthier.
THE ARTIFICIAL STUFF
The most popular artificial sweeteners include sucralose (Splenda), aspartame (Equal) and saccharin (Sweet’N Low), neotame, and acesulfame-K are found in diet sodas, light yogurts or ice creams, sugar-free chewing gums and candies among other products. They’re oftentimes marketed as diet, sugar-free, calorie-free, low-calorie, skinny or light.
Artificial sweeteners are man-made, unnatural chemical compounds that our body doesn’t understand or know how to metabolize. Some scientific evidence suggests artificial sweeteners may cause brain cancer or slow down metabolism – although most of these studies have been tested on animals, never humans.
Or what about the theory that eating alternative sweeteners makes you more inclined to eat a) a whole bag of sugar-free candies at one time, and b) overindulge in junk food later. Plus, certain types of sugar alcohols or sugar substitutes contain hard-to-digest ingredients that can manifest in symptoms of gastrointestinal discomfort, like bloating, gas, cramping, diarrhea, or even constipation.
A dumptruck filled with sand moves 1.8 km/h when it begins to accelerate uniformly at a constant rate. After traveling 4.0 102 m, the truck's speed is 24.0 km/h. What is the magnitude of the truck's acceleration?
The acceleration of the truck is obtained from the calculation done as 0.055 m/s^2.
What is the magnitude of the truck's acceleration?We know that the acceleration is defined as the rate of the change of the velocity of the object with time and we can be able to obtain the acceleration by the use of the equations of kinematics as usual.
Initial velocity = 1.8 km/h or 0.5 m/s
Final velocity = 24.0 km/h or 6.67 m/s
Distance covered = 4.0 * 10^2 m
Then;
v^2 = u^2 + 2as
v = final velocity
u = initial velocity
a = acceleration
s = distance covered
a = v^2 - u^2/2s
a = (6.67)^2 - (0.5)^2/2 * 4.0 * 10^2
a = 44.4 - 0.25/800
a = 0.055 m/s^2
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A rocket, initially at rest on the ground, accelerates straight upward from rest with constant (net) acceleration 53.9 m/s2 . The acceleration period lasts for time 6.00 s until the fuel is exhausted. After that, the rocket is in free fall.
Find the maximum height ymax reached by the rocket. Ignore air resistance and assume a constant free-fall acceleration equal to 9.80 m/s2 .
Answer:
maximum height reach by rockect =970.2metre
Explanation: