Answer:
8m/s
Explanation:
i think i had this question on a test i'm taking so i'm assuming i cannot say for sure if this is correct
A car covers 400m distance in 50 sec find it's speed?
Answer:
[tex]\boxed {\boxed {\sf 8 \ m/s}}[/tex]
Explanation:
Speed is equal to distance over time.
[tex]s=\frac{d}{t}[/tex]
The distance is 400 meters and the time is 50 seconds.
[tex]d= 400 \ m \\t= 50 \ s[/tex]
Substitute the values into the formula.
[tex]s=\frac { 400 \ m }{ 50 \ s}[/tex]
Divide.
[tex]s= 8 \ m/s[/tex]
The speed of the car is 8 meters per second.
What is the Martian atmosphere like ?
Answer:
Mars' atmosphere however is 95% carbon dioxide, 3% nitrogen, 1.6% argon, and it has traces of oxygen, carbon monoxide, water, methane, and other gases, along with a lot of dust. Dust hanging in the air colors Martian skies tan in photos taken from the surface. Relative to Earth, the air on Mars is extremely thin.
Explanation:
Stephen Strasburg throws out the opening pitch at Nationals Park. The ball starts at rest, but
accelerates to 42 m/s (approximately 95 mph) in the 0.02 seconds it takes to throw. If the ball
has a mass of 0.145 kg, how much force did Strasburg throw with?
Answer:
Force = 304.5 Newton
Explanation:
Given the following data;
Initial velocity, u = 0m/s (since it started from rest).
Final velocity, v = 42m/s
Time, t = 0.02 secs
Mass = 0.145 kg
To find the force;
First of all, we would have to determine the acceleration of the ball;
Acceleration = (v - u)/t
Acceleration = (42 - 0)/0.02
Acceleration = 42/0.02
Acceleration = 2100 m/s²
Now, we solve for the force;
Force = mass * acceleration
Force = 0.145 * 2100
Force = 304.5 Newton
If the frequency of an electromagnetic wave is reduced to one third, what happens to the wavelength?
Read the excerpt from " Crossing the Brooklyn Ferry." Flood-tide below me! I see you face to face! Clouds of the west – sun there half an hour high – I see you also face to face. Which statement best describes the effect of repeating the phrase "face to face"? It shows that the narrator sees the facial features of others. It demonstrates that the narrator is surrounded by nature. It demonstrates that the narrator is surrounded by people. It shows that the narrator is suspicious of the sea and sky.
Answer:
It demonstrates that the narrator is surrounded by nature.
Explanation:
Walt Whitman's "Crossing the Brooklyn Ferry" is a free verse poem written about the speaker's return trip on a ferry. He talks about his daily commute on the Brooklyn ferry, like the other commuters, and how they all share the same experience.
The given lines are from the very first stanza of the poem. The speaker repeats "face-to-face" when talking about nature. He sees the "flood-tide below" and the "clouds" high in the sky. This repetition demonstrates that he is surrounded by nature, amidst the throng of people around him. This shows the speaker's attitude of seeing the beauty of nature in any way he can, despite the bustle of commuting from Brooklyn to Manhattan.
Thus, the correct answer is the second option.
Answer:
B
Explanation:
edge 2023
4.00 kg glass coffee cup is 30.0°C at room temperature. It is then plunged into hot dishwater at a temperature of 90.0°C, as shown in Figure below. If the temperature of the cup reaches that of the dishwater, how much heat does the cup absorb? C glass = 837 (J/kg.C)*
Answer:
Q = 200800 Joules.
Explanation:
Given the following data;
Mass = 4kg
Initial temperature = 30.0°C
Final temperature = 90.0°C
Specific heat capacity of glass = 837 J/kg°C
To find the quantity of heat absorbed;
Heat capacity is given by the formula;
[tex] Q = mcdt[/tex]
Where;
Q represents the heat capacity or quantity of heat.
m represents the mass of an object.
c represents the specific heat capacity of water.
dt represents the change in temperature.
dt = T2 - T1
dt = 90 - 30
dt = 60°C
Substituting the values into the equation, we have;
[tex] Q = 4*837*60[/tex]
Q = 200800 Joules.
Therefore, the amount of heat absorbed is 200800 Joules.
jake climbs up the stairs with some books, his weight is 300N and the books have his weight of 100N. He climbs a height of 30m. How much work is done by her.
Answer:
c
Explanation:
how is urine produced
Urine is a liquid by-product of metabolism in humans and in many other animals. Urine flows from the kidneys through the ureters to the urinary bladder. Urination results in urine being excreted from the body through the urethra.
Urine is a liquid by-product of metabolism in humans and in many other animals. Urine flows from the kidneys through the ureters to the urinary bladder. Urination results in urine being excreted from the body through the urethra.
PLZZ HELP!!!
When a star is undergoing nuclear fusion what type of radiation will be found?
Answer:
I think the correct answer would be the third option. As the elements around the star begins to emit more and more electromagnetic radiation, the rocky materials are pulled in by the electromagnetic radiation. They are being drawn closer to the star and there would be a very high chance of a nuclear
Explanation:
what are the types of federal court cases
Answer:
More specifically, federal courts hear criminal, civil, and bankruptcy cases. And once a case is decided, it can often be appealed.
Explanation:
I hope this helps and pls mark me brainliest! Thank you :)
Answer:
There are many types of federal court cases. Examples are civil, criminal, bankruptcy. There are also special "military courts" for cases related to military crimes like desertion, etc.
Explanation:
Jenny and Anne wanted to see who could throw a ball the hardest. They decided to each throw a ball against a wall as hard as they could and measure how far the ball rolled away from the wall
Answer:
The answer is below
Explanation:
Jenny and anne wanted to see who could throw the ball the hardest. they decided to each throw a ball against the wall as hard as they could and measured how far the ball rolled away from the wall. what might be the variables in this experiment;
Solution:
There are different type of collisions. In an inelastic collision, momentum is conserved and there is loss in kinetic energy while in an elastic collision, momentum is not conserved and there is no loss in kinetic energy.
During inelastic collision, the objects stick together while during an elastic collision, the objects separate.
When the ball is thrown against the stationary wall, there is momentum due to the force of impact. The distance at which the ball is rolled away from the wall depends on:
a) mass of the ball, b) velocity of the ball, c) mass of the wall d) type of collision (elastic or inelastic)
5. Relationships in a community can be cooperative or competitive.
True
False
Answer:
True
Explanation:
is the correct answer
Answer:
This is True
Explanation:
Communities cooperate by simply co-existing and working together to benefit the community and offering their goods and services. Some programs in a community offer social work, like volunteering and charities, which help people in need in a community.
They can also be competitive because there are lots of the same goods and services offered throughout the city, so businesses have to compete for sales to attract consumers in the communities.
Mark me brainliest pls thank you
If you are sitting 8.20 m from a
70.0 W speaker, what is the
sound level in dB?
(Treat the speaker as a point source.)
(Unit = dB)
The sound level will be 109 decibels. If a person exceed hear a sound more than the certain sound level, the person hearing may damage.
What is sound level?Sound level is the intensity to measure the sound. Decibels are used to quantify sound level.
Sound level or the sound intensity is the ratio of the power to the surface area;
[tex]\rm Intensity = \frac{Pow\pi er }{Surface \ area} \\\\ \rm Intensity = \frac{70}{ 4 \times \pi \times 8 \times 20^{2} } \\\\ I = \ 0.082 \ W/m^2[/tex]
The conversion of the obtained value into the decibel as;
[tex]\rm I = 10 \times log \frac{I}{1 \TIMES 10^{-12}} \\\\\ I = 109 \ decibel[/tex]
Hence, the sound level will be 109 decibels.
To learn more about the sound level, refer to the link;
https://brainly.com/question/12899113
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A man walks a distance of 2 m every second.
aj What speed is he travelling at?
b) How far wil he have walked in:
5 s
50 s
2 min
2 hr
Please help :(.
what are the four main elements of matter
Answer:
Earth, Water, Air, Fire.
Explanation:
Answer:
Earth, Water, Air, Fire
Explanation:
As our Sun exhausts its supply of hydrogen, it will cool down by 1000 to 2000 Kelvin. But it will also become about 100 times brighter than it is now. Describe the path our Sun will take on the HR diagram, and what type of star the Sun will become.
Answer:
It will move upward and to the right, from the main sequence to the giants.
Explanation:
Plato answer so change it up a bit xx
a subwoofer is a type of speaker which plays only the very low notes in a song or movie, which following frequencies would you expect to be able to hear from a subwoofer
10hz
25hz
750hz
1,050hz
Answer:
25z
Explanation:
Okay Okay Serious question!!!!
How many times does the earth rotate in a year??
365.25 or 366.25 in a leap year
10. What are the only types of passes allowed in floor hockey?
pls help will mark brainliest
Answer: a!! Bc 10x2=20!
Explanation:
Answer:
20N
Explanation:
F=m*a
F=10*2
F=20N
.....
What is one reason that electromagnetic waves are used in long-distance communication?
A. They travel rapidly.
B. They move matter easily
C. They do not lose energy over long distances.
D. Informatioŋ can be encoded in the wave speed.
One reason that electromagnetic waves are used in long-distance communication is, that they do not lose energy over long distances. So Option C is correct
What are electromagnetic waves ?Electromagnetic waves are a type of wave that consists of oscillating electric and magnetic fields. They are propagated through space or through a material medium, and they have the ability to travel through a vacuum, which is the absence of matter. Electromagnetic waves have a wide range of frequencies, which determines the type of electromagnetic wave. The most familiar types of electromagnetic waves include radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, X-rays, and gamma rays.
One of the property of the electromagnetic waves is that they do not lose energy over long distances.
To know more about electromagnetic waves check:
https://brainly.com/question/16515517
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Explain how that energy converts itself from POTENTIAL to KINETIC energy.
Answer:
Potential energy can transfer into other forms of energy like kinetic energy. Kinetic energy is energy an object has because of its motion.
Explanation:
The ball was released, as the ball moves faster and faster toward the ground, the force of gravity will transfer the potential energy to kinetic energy.
An 80 kg diver jumps from a 10 m high platform. What is the gravitational potential energy of the diver right before they jump (top of platform)
Answer:
0 Joules.
Explanation:
Given the following data;
Mass = 80kg
Height = 10m
Gravitational potential energy (GPE) is an energy possessed by an object or body due to its position above the earth.
Mathematically, gravitational potential energy is given by the formula;
[tex] G.P.E = mgh[/tex]
Where;
G.P.E represents potential energy measured in Joules.
m represents the mass of an object.
g represents acceleration due to gravity measured in meters per seconds square.
h represents the height measured in meters.
We know that acceleration due to gravity is equal to 9.8m/s²
But since we're determining the gravitational potential energy just before the driver jump, the height would be zero (0) meters.
Gravitational potential energy= mgh
Gravitational potential energy = 80*9.8*0
Gravitational potential energy = 0 Joules.
This ultimately implies that, if an object or body hasn't moved (jumped) from its reference point, its gravitational potential energy would be equal to zero.
What's the Genotype for these? If your answer is something off-topic I ShAlL rEpOrT iT u.U
Pick any free letter for each trait. For example, "A" for the dominant allele and "a" for the recessive allele for the number of arms. Assuming complete dominance, the genotype for the dominant trait will always have at least one "capital" allele, so a creature with 2 arms would have genotype either AA (homzygous dominant) or Aa (heterozygous), while a creature with the recessive trait of having 4 arms will always be homzygous recessive with genotype aa.
The slope of a distance-time graph will give
36. What are the necessary condition for work to done
A). Force must be applied on a body
B). The applied force causes the body to displace
C). The force and the displacement must be parallel or in the same direction
D). All of the above
-
YO
Answer:
A
Explanation:
Anything can be doing work at any time. Even when your sleeping work is being done so no part of the body needs to displace before work can be done.
What are 3 items that can be found in each layer of the atmosphere?
Answer:troposphere, stratosphere, mesosphere and thermosphere and exosphere
Explanation:
Which type of radioactive decay produces the highest-energy radiation?
A. Beta decay
B. Alpha decay
C. Electromagnetic decay
D. Gamma decay
SUBMIT
Help
Answer:
gamma decay
Explanation:
Answer: gamma decay
Explanation: I took the test
what is the power of lens having focal length 6 cm?
Yes Convex Lens Can form virtual images which are magnified, provided the object distance, measured from the optical centre must be less than focal length.
For your question,
let focal length, f = + 6 cm
let object distance be 'u'
let image distance be 'v'
magnification required, m = +3, +ve because image will be erect, according to the property of convex lens:
Two runners ran side by side, each holding one end of a horizontal pole. How would this affect the direction of the runners? Explain.
Answer:
They will run parallel to each other as the none of a straight pole cannot be bent in such a way where one side can turn without the other turning.