Answer:
Distance=460
Displacement=340
Explanation:
distance means total distance travelled. displacement mence distance travelled in east - distance in west
PLEASE ANSWER, will mark brainliest!!
Answer:
Purple Car and Black Car
Explanation:
Have to be moving in acceleration to have acceleration, being at a constant speed isn't moving.
You have given a power supply, copper wire, and an iron nail. What should you do to decrease the strength of the electro magnet?
force prevents things from floating above the ground. *
frictional
muscular
gravitational
Which of the following is NOT a characteristic of vibrations?
(a) Time period
(b) Amplitude
(c) Density
(d) Frequency
Answer:
answer is (c) density is not a characteristics of vibration.
hope it is right answer for it!!
30 points, brainiest, high school physics problem, please help with explanations.
Answer:
I think the answer is C too
Please help, I need this by today 3/7/21
Answer: INCREASE THE IMPACT TIME
crumple zones help transfer some of the cars kinetic energy into controlled deformation, or crumpling, at impact
a 2.00x10^2 -g sample of water at 60 C is heated yo water vapor at 140 C. How much thermal energy is absorbed
Answer:
The thermal energy absorbed is 66.98 kJ.
Explanation:
The thermal energy absorbed can be found by using the following equation:
[tex] Q = mC\Delta T [/tex]
Where:
Q: is the thermal energy =?
m: is the mass of water = 2.00x10² g
ΔT = T₂ - T₁ = 140 °C - 60 °C = 80 °C
C: is the specific heat of water = 4.186 J/(°C*g)
Hence, the thermal energy absorbed is:
[tex]Q = mC\Delta T = 2.00 \cdot 10^{2} g*4.186 \frac{J}{^{\circ} C*g}*80 ^{\circ} C = 66976 J = 66.98 kJ[/tex]
Therefore, the thermal energy absorbed is 66.98 kJ.
I hope it helps you!
The thermal energy absorbed will be 66.98 kJ.heat loss is inverse to heat gain.
What are heat gain and heat loss?Heat gain is defined as the amount of heat required to increase the temperature of a substance by some degree of Celcius.
Given data;
Q(thermal energy) =?
m(mass of water) = 2.00x10² g
C(specific heat of water) = 4.186 J/(°C*g)
ΔT = T₂ - T₁
ΔT = 140 °C - 60 °C
ΔT = 80 °C
It is given by the formula as ;
[tex]\rm Q= mcdt \\\\ Q= 2.00x10^2 \times 4.186 \times 80 \\\\ Q=66.98 \ kJ.[/tex]
Hence, the thermal energy absorbed will be 66.98 kJ.
To learn more about the heat gain refer to the link;
https://brainly.com/question/26268921
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If an element is a semi-conductor, which classification correctly describes it?
metalloid
nonmetal
matal
compound
Metal
Explanation:
semiconductors are materials which have a conductivity between conductors (generally metals)
An airplane is flying north with an airspeed of 200 km/h when it encounters a crosswind of 70 km/h toward the east. which expression gives the resultant speed of airplane?
Answer:
211.89 km/h
Explanation:
Given that,
The speed of an airplance in North direction = 200 km/h
Speed in East direction = 70 km/h
We need to find the resultant speed of the airplane. It can be calculated as the resultant of the two velocities as follows :
[tex]v=\sqrt{200^2+70^2} \\\\=211.89\ km/h[/tex]
So, the required speed is 211.89 km/h.
Who is Isaac Newton?
Take the points, Im leaving Brainly..
Answer: English
. mathematician
. physicist
. astronomer
. theologian
. author
Explanation:
Take the points, Im leaving Brainly.. Why?!
[tex]\huge\bf\maltese{\underline{\red{Thanks}}}\maltese[/tex]
In the springtime, many people begin sneezing and suffering from allergies. Which is the most likely cause of these allergies?
Answer:
The correct answer is - pollens.
Explanation:
During the springtime of the year, Pollination is common among plants and there are many plants that use air or wind as the medium for spreading the pollens. Such weeds, grass, and trees use this type of wind-pollination.
These are the most common allergens during this time that leads to sneezing and suffering from allergic reactions. Pollens are too heavy to be airborne for a longer time or they are inhaled from the air and lead to allergic reactions.
It is common problem to a physically active person who is experiencing dizziness, fatigue, dark-colored urine, and extreme thirst.
Answer:
Look below.
Explanation:
All the symptoms provided points to the common problem of dehydration. Especially a physically active person because they are constantly sweating which leads to the loss of bodily fluids and dehydration.
If my angular velocity slows from 30 Hz to 20 Hz in 72°, what is my deceleration?
Answer:
The deceleration is -7.85x10³ rad/s².
Explanation:
The angular speed (ω) is related to frequency (f) as follows:
[tex] \omega = 2\pi f [/tex]
When the frequency is 30 Hz the angular speed is:
[tex] \omega_{i} = 2\pi f = 2\pi*30 Hz = 188.5 rad/s [/tex]
Now, when the frequency is 20 Hz the angular speed is:
[tex] \omega_{f} = 2\pi*20 Hz = 125.7 rad/s [/tex]
Finally, the angular acceleration (α) can be found using the following equation:
[tex] \omega_{f}^{2} = \omega_{i}^{2} + 2\theta \alpha [/tex]
Where:
θ: is the angular displacement = 72°
[tex] \alpha = \frac{\omega_{f}^{2} - \omega_{i}^{2}}{2\theta} [/tex]
[tex] \alpha = \frac{(125.7 rad/s)^{2} - (188.5 rad/s)^{2}}{2*72*\frac{2\pi rad}{360}} = -7.85 \cdot 10^{3} rad/s^{2} [/tex]
Therefore, the deceleration is -7.85x10³ rad/s².
I hope it helps you!
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Answer:
Explanation:
Pooh Shiesty, that's my dawg
But Pooh, you know I'm really shiesty
You told all them O.T. ni ggas that you really slide
Tell the truth about your gang, they really dyin'
I got my own fire, don't need security in the club
All that woofin' on the net , I thought you was a thug
They ain't got nowhere to go, I sh0t up everywhere they was
Yeah, you know who took that - from you
Come get it back in blood
Come get it back in blood
what would be the velocity of a sound wave in the air with a frequency of 260Hz?
The speed of sound in air doesn't depend on the frequency of the sound. It depends on the temperature, pressure, and humidity of the air. It's usually around 340 m/s .
PLEASE HELP!!! GIVING BRAINLIEST!! ill also answer questions that you have posted if you answer this correctly!!!! (60pts)
Answer:
Daniel Bernoulli
Explanation:
Hope this helps! :)
Answer:
Daniel Bernoulli is the person who discovered that fast-moving fluids produce less pressure and slow-moving fluids produce greater pressure.
Look at the diagram B. What is happening in diagram B ?
Answer:
a lens is scattering light
Explanation:
Diagram B shows a plano concave lens. Plano-Concave lenses bend parallel input rays to diverge from one another on the output side of the lens and hence have a negative focal length.
In the given figure, a Plano concave lens is shown. It scatters light. The image is formed in front of lens. The formed image is virtual.
Hence, the correct option is (c) "a lens is scattering light".
A car is traveling at 10 m/s. 10 seconds later the car is traveling 40 m/s. What is the car’s acceleration?
Answer:
a = 3 m/s^2
Explanation:
Vi = 10 m/s
Vf = 40 m/s
t = 10 s
Plug those values into the following equation:
Vf = Vi + at
40 = 10 + 10a
---> a = 3 m/s^2
The car is traveling with an initial velocity of 10 m/s, a final velocity of 40 m/s in the time period of 10 seconds, then the acceleration of the car is 3 m/s².
What is acceleration?Acceleration describes a change in an object's velocity. By accelerating, decelerating, or changing direction of motion, an object's velocity may change.
An apple falling to the ground, the moon orbiting the earth, and a car stopping at a set of traffic lights are a few examples of acceleration. With the aid of these illustrations, we may better see that acceleration occurs whenever a moving object modifies its direction, speed, or both.
The given values according to the question are,
Initial velocity, u = 10 m/s
Final velocity, v = 40 m/s and,
Time, t = 10 seconds.
Use the equation of motion to find the acceleration,
v = u + at
40 = 10 + (a)10
a = 30/10
a = 3 m/s².
Hence, the acceleration of the car is 3 m/s².
To get more information about Acceleration :
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assuming this is a distance time graph( ignore the speed time title) assume metres on vertical scale. describe in as much detail the journey shown. include speeds, total distance, when stationary, and when the return journey started.
(dont comment if u dont know)
Answer:
The journey started from point A, with a speed of 1 m/s for 10 seconds after which the it became stationary at 10 meters from the start point, for 10 seconds. The journey continued at a higher speed of 2 m/s for 5 seconds and halted (became stationary) again at 20 meters which was the maximum distance reached from the start point
The return journey to the start point started at the 20 meter mark and lasted for 5 seconds, at a speed of 4 m/s
The total distance travelled during the journey from the start point A to the final point B is 40 m
Explanation:
From the start point A to point B, we have;
The speed from A to B = 10 m/(10 s) = 1 m/s
The distance traveled from A to B = 10 m
The time it takes to move from A to B = 10 seconds
From the point B to point C, we have;
The distance traveled from B to C = 0 m, (stationary)
The time it remains at point B distance from the start point = 10 seconds
The speed between point B to C = 0 m/(10 s) = 0 m/s
From the point C to point D, we have;
The distance traveled from C to D = 10 m
The time it takes to move from C to D = 5 seconds
The speed between point C and D = 10 m/(5 s) = 2 m/s
From the point D to point E, we have;
The distance traveled from D to E = 0 m, (stationary)
The time it remains at point D distance from the start point = 10 seconds
The speed between point D to E = 0 m/(10 s) = 0 m/s
From the point E to point F, we have;
The distance traveled from E to F = 20 m (return journey starts at point E)
The time it takes to move from E to F = 5 seconds
The speed between point E to F = 20 m/(5 s) = 4 m/s (Return journey)
Therefore, the journey started from point A, with a speed of 1 m/s for 10 seconds after which the it became stationary at 10 meters from the start point, for 10 seconds. The journey continued at a higher speed of 2 m/s for 5 seconds and halted (became stationary) again at 20 meters which was the maximum distance reached from the start point
The return journey to the start point started at the 20 meter mark and lasted for 5 seconds, at a speed of 4 m/s
The total distance moved, 'd', to and from the start point with reference to the graph is given as follows;
d = (From A to B) 10 m + (From B to C) 0 m + (From C to D) 10 m + (From D to E) 0 m + (From E to F) 20 m = 40 m
The total distance travelled in the journey is 40 m
The total displacement, [tex]\underset{d}{\rightarrow}[/tex] = 10 m + 10 m - 20 m = 0 m
an ocean wave has a wavelength of 15 meters and is moving at 2.5 m/s. what is the frequency
Answer:
frequency is .167/s for this wave
Answer:
wave speed=frequency×wave length
frequency=15/2.5
=6
i hope this helps
Hi guys! pls help I asked this question almost 2 times and still didn't receive my answers.....Thanks in advance..
Answer:
1. Lateral inversion is a phenomenon in which left appears to be right and vice versa. It is due to direction that light follows when it strikes a reflecting surface, generally a mirror.
These are the letters which don't show lateral inversion A,H,O,T,U
2. USES OF CONCAVE MIRROR
They are used as shaving mirrors to see a larger image of the face.
Dentists use concave mirrors to view large images of the teeth of the patients.
USES OF CONVEX MIRROR
It is is used as a rear view mirror in vehicles.
It is used as a vigilance mirror.
The force required to maintain an object at a constant speed in free space is equal to __________
Two football players with mass 70 kg and 90 kg run directly toward each other with speeds of - 6 m/s and +3 m/s respectively. If they grab each other as they collide, what will be the combined speed of the two players just after the collision?
Answer:
they will fall down
Explanation:
The diagram represents an energy change.
waste energy
energy input
useful energy
output
Copy and complete the following two word equations for this energy change:
waste energy =
b efficiency=
Answer:
Waste energy = Energy Input - Useful Energy Output (Principle of Energy Conservation)
Efficiency = Useful Energy Output/Energy Input (Definition of Energy Efficiency)
Explanation:
The waste energy is the difference between energy input and useful energy output. Then, the word equation is:
Waste energy = Energy Input - Useful Energy Output (Principle of Energy Conservation)
The efficiency, measured in percentage, is the ratio of the useful energy output to the energy input and multiplied by 100. Then, the word equation is:
Efficiency = Useful Energy Output/Energy Input (Definition of Energy Efficiency)
Define a vector in a sentence.
Answer:
A vector in physics is a quantity that has both magnitude and direction.
Answer:
a line that usually veers and can be the result of force. Examples of Vector in a sentence. Military aviators study the vector between their aircraft and the enemy in order to calculate how to intercept.
Explanation:
when the wavelength is tripled at a constant frequency, what happens to the velocity of the wave?
a. it is tripled
b. it remains the same
c. it decreases to half the original value
d. it increases to six times the original value
Answer:
increases over time is the correct answer
Explanation:
Plssssss help me no one wants to help me——— power plants use generators to generate electricity for homes and businesses. Some generators work by spinning a coil of wire inside a magnet, as shown in the image. To keep the coil of wire spinning, it’s often attached to a turbine, which is s as n axle with fan blades. Different kinds of power plants use different methods to spin the turbine to make electricity. What’s one way a power plant might spin the turbine?
Answer:
There are a many ways to produce electricity. Electrons can flow between certain different materials providing a current, as in a common battery. While reliable and portable, chemical batteries run down quickly. To provide the large amounts of steady power demanded by modern societies, large power plants have been built. Most power plants make electricity with a machine called a generator.
A 1925 Turbine Rotor
A 1925 turbine rotor for a Westinghouse generator, Image #21.035, Science Service Historical Image Collection, National Museum of American History
Generators have two important parts: the rotor (which rotates) and the stator (which remains stationary). Generators use the principle of electro-magnetic induction, which exploits the relation between magnetism and electricity. In large AC generators, an outer shell with powerful magnets rotates around a stationary "armature" which is wound with heavy wire. As they move, the magnets induce an electric current in the wire.
It is important to recognize that electricity is not mined or harvested, it must be manufactured. And since it's not easily stored in quantity, it must be manufactured at time of demand. Electricity is a form of energy, but not an energy source. Different generating plants harness different energy sources to make electric power. The two most common types are "Thermal Plants" and "Kinetic Plants".
The NGC 3603 region of space is shown below. It is a
cloud of gas and dust. Stars are forming in this cloud,
How would NGC 3603 be classified?
O A. As a galaxy
O B. As a nebula
O C. As a planet
D. As a solar system
Answer:
A. NGC 3603 would be classified as Nebula
Explanation:
please try a and c, electric circuits please try
Explanation:
I love you
mujhe bhi bolo
HELP PLSSSSSSSSSS ASAP :)))))
Answer:
Explanation:
Pooh Shiesty, that's my dawg
But Pooh, you know I'm really shiesty
You told all them O.T. ni ggas that you really slide
Tell the truth about your gang, they really dyin'
I got my own fire, don't need security in the club
All that woofin' on the net , I thought you was a thug
They ain't got nowhere to go, I sh0t up everywhere they was
Yeah, you know who took that - from you
Come get it back in blood
Come get it back in blood