ACTIVITY 1: Research a Famous Chemist or Physicist
1) Do research on a famous chemist or physicist. Write a 300-500 word essay one of them. Use at least three different sources. Sources can include biographies, internet articles from universities, or journal articles. Wikipedia is not an acceptable source information.
Be sure to answer these questions:
* What did this scientist discover?
* How was it discovered?
* How does this discovery or invention impact the world today?
(Scientist: Nikola Tesla)
Answer:
What did this scientist discover?
Nikola Tesla discovered and created Bluetooth back in 19, November 5, 1898.
"The Transmission of Electrical Energy Without Wires", Electrical World and Engineer, January 7, 1905. Tesla, Nikola, World System of Wireless Transmission of Energy, Telegraph and Telegraph Age, October 16, 1927.
How was it discovered?
In 1901 Tesla began his work of a large high-voltage wireless energy transmission station called the Wardenclyffe Tower. ... Some devices already employ wireless energy transfer without the use of metal contacts. The power is transferred through the plastic cases using magnetic induction.
How does this discovery or invention impact the world today?
It changed the new age by listening to music with wireless earbuds.
A jet airplane is in level flight. The mass of the airplane is m = 8930 kg. The airplane travels at a constant speed around a
circular path of radius R = 8.01 mi and makes one revolution every T = 0.106 h. Given that the lift force acts perpendicularly
upward from the plane defined by the wings, what is the magnitude of the lift force acting on the airplane?
At what angle is the airplane banked?
Answer:
Explanation:
The lift force will have a vertical component equal to the weight of the plane and a horizontal component sufficient to supply the needed centripetal accleration.
R = 8.01 mi = 12891 m
ω = 2π/T = 2π/(0.106(3600)) = 0.016465 rad/s
F = m√(g² + (ω²R)²)
F = 8930√(9.81² + (0.016465²(12891))²)
F = 8930√(9.81² + 3.49²)
F = 92,996.480...
F = 93.0 kN
θ = arctan(3.49/9.81) = 19.6°
Ralph is mowing the back yard with a push mower downward with a force of 20.0 N at an
angle of 30.0° to the horizontal. What are the horizontal and vertical components of the force
exerted by Ralph?
Answer:
Horizontal component = (10N) · sin (20°) = 3.42... N (rounded)
Vertical component = (10N) · cos (20°) = 9.39... N (rounded)
Explanation:
A 500 kg airplane wing is hanging on a rope from the ceiling. What is the tension force being supplied by the rope?
a.5000
b.2500
c.250
d.500
Answer:
a. 5000 N
Explanation:
If gravity is 10 m/s² and the wing is motionless.
F = ma = 500(10) = 5000 N
Please answer ASAP with science! Will give ya brainliest :) !!
Answer:
d
Explanation:
Kinetic and Potential energy
The main difference between potential and kinetic energy is that one is the energy of what can be and one is the energy of what is. In other words, potential energy is stationary, with stored energy to be released; kinetic energy is energy in motion, actively using energy for movement.
An astronaut drops a hammer from 3.0 meters above the surface of the Moon. If the acceleration due to gravity on the Moon is 1.62 meters per second2, how long will it take for the hammer to fall to the Moon’s surface?
Distance = (1/2 acceleration) · (time)²
3 m = (0.81 m/s²) · (t²)
t² = (3m / 0.81 m/s²)
t² = 3.70 s²
t = 1.92 seconds
Answer:
it c on edge
Explanation:
trust
An example of a neologism from the Internet is:
A. jam (meaning "to play music").
B. peeps (meaning "people" or "the friends you hang out with").
C. bromance (meaning "a close male friendship").
D. defriend (meaning "to remove someone from a friends list").
Answer: peeps
Explanation: meaning “people” or “the friends you hang out with”
Answer: Defriend (meaning "to remove someone from a friends list").
Explanation: Just in case someone comes by again like I did..
please can anybody tell me what are these lab equipments
Answer:
5 is the tripoid stand
Thanks have a bangtastic day
Answer:
hii there
5 ) tripod
6 ) test tube holder
Explanation:
Hope it helps
Have a nice day : )
You're out for run. Your initial velocity is 1.5 m/s. Suddenly a crazy dog starts chasing you and you accelerate to a velocity of 3 m/s. It takes you 10 seconds to find a safe place to hide from the Chihuahua. What was your displacement?
Show your work for displacement.
Include units.
The displacement of your motion during the entire motion is 22.5 m
The given parameters;
your initial velocity, u = 1.5 m/syour final velocity , v = 3 m/stime of motion, t = 10 sThe displacement of your motion during the entire motion is calculated from your average velocity and time of motion.
This magnitude of this displacement is calculated as follows;
[tex]s = (\frac{u+ v}{2} )t\\\\s = (\frac{1.5 + 3}{2} ) \times 10\\\\s = 22.5 \ m[/tex]
Thus, the displacement of your motion during the entire motion is 22.5 m.
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Which of these describes Kepler’s third law of orbital motion?(1 point)
T3 ∝a2
T∝a2
T2 ∝ a3
T2∝a
Answer:
1) which planet's orbit was Kepler first studying when he began to developed his laws of orbital motion? Answer: Mars
2) which is the best description of Earth's orbit? Answer: almost circular
3) which orbital shape did most scientists in the early 1600s think the planets of our solar system have? Answer: circular
4) which of these describes Kepler's third law of orbital motion? Answer T^2 OX a^3
5) which statement describes Kepler's third law of orbital motion? Answer The square of orbital period is proportional to the cube of the semi-major axis.
Explanation:
I just took the connexus quick check and got a 100%
T2 ∝ a3 is the relation that describes Kepler’s third law of orbital motion, therefore the correct answer is option C.
What are Kepler's laws of planetary motion?There are three laws of Kepler as follows,
The orbit of the planet is elliptical and the sun is present at one of the two foci of the elliptical route followed by the rotating planet.
A line segment linking a planet and the Sun covers equal regions throughout equal intervals of the time period.
The semi-major axis length of an elliptical planet's orbit is equal to the square of the planet's orbital period.
T2 ∝ a3 is the relation that describes Kepler’s third law of orbital motion,
Thus, the correct answer is option C.
To learn more about Kepler's laws of planetary motion, refer to the link;
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the velocity of an object must include these two things ________ and _________
will give brainlest
Answer:
The velocity of an object must include these two things displacement and time.
Explanation:
Hope this helps you. Have a nice day^_^
Please mark as brainliest. It helps a lot. :)
Book A with a mass of 1.00 kg is placed on a horizontal table. Book B with a mass of 0.500 kg is placed on top of book A. What is the magnitude of the normal force exerted on book A by the table?
Answer:
Explanation:
N = mg = (1.00 + 0.500)(9.81) = 14.7 N
The magnitude of the normal force exerted on book A by the table is 14.7 N
ForcesFrom the question, we are to determine the magnitude of the normal force.
The normal force ca be calculated by using the formula
[tex]F_{n} = mg[/tex]
Where [tex]F_{n}[/tex] is the normal force
m is the mass
and g is the gravitational field strength ( g = 9.8 m/s²)
The mass will be addition of the masses since Book B is placed on top of the book.
Thus,
m = 1.00 kg + 0.500 kg = 1.50 kg
Then,
[tex]F_{n} = 1.5 \times 9.8[/tex]
[tex]F_{n} = 14.7 \ N[/tex]
Hence, the magnitude of the normal force exerted on book A by the table is 14.7 N
Learn more on Forces here: https://brainly.com/question/13707444
what’s 12cm in kilometers
the weight on each foot of an elephant 500n. what will be the contact force
Answer:
The weight of an object is the force it exerts due to gravity. Pressure is force per unit area, or force divided by area over which the pressure is exerted.
Explanation:
1. For Jo:
1. For Jo:force = 500 N
1. For Jo:force = 500 Narea = 0.0001 m^2
1. For Jo:force = 500 Narea = 0.0001 m^2pressure = F/A = 500N/0.0001m^2 = 5,000,000 N/m^2
After turning off the television, you approach it. As you get close, but not touching it, the hairs on your arm start to stand up. This is an excellent example of static charge built up by
Answer:
electricity duh
Explanation:
find the current and voltage across each resistor in the given circuit.
Answer:
R1, R4: 1.3433 VR2: 0 VR3: 6.3134 VExplanation:
The resistor R2 is shorted out, so is not in the circuit. The remaining resistors are in a series circuit with a total resistance of ...
R1 +R3 +R4 = 1k +4.7k +1k = 6.7k
The current is the ratio of the applied voltage to this total resistance:
I = V/R = (9 v)/(6.7k) ≈ 1.3433 mA
The voltage across each resistor is the product of this current value and the resistance:
R1 voltage = (1 kΩ)(1.3433 mA) = 1.3433 volts
R2 voltage = 0
R3 voltage = (4.7 kΩ)(1.3433 mA) = 6.3134 volts
R4 voltage = (1 kΩ)(1.3433 mA) = 1.3433 volts
A ball of mass 2 kg is being pulled sideways by a force 3 N to the right, and a force of 8N to the left - these are the only forces acting on it..
1.) What is the net force in the horizontal (x) direction?
2.) what is the acceleration in the horizontal (x) direction?
Answer:
Explanation:
1.) What is the net force in the horizontal (x) direction?
Fnet = 8 - 3 = 5 N left
2.) what is the acceleration in the horizontal (x) direction?
a = Fnet/m = 5/2 = 2.5 m/s² left
i commit to uphold the truth by
Answer:
the truth was committed to upload by me
Explanation:
passive voice
PLS HELP ME WITH THIS
Answer:
C
Explanation:
C
Which statements describe elliptical galaxies? *Select the two correct answers.*
A. They include the Milky Way.
B. They are the most common galaxy type.
C. They typically contain very little gas and dust.
D. They include the universe's largest galaxies.
Elliptical galaxies are galaxies that are shaped like an ellipse. An ellipse is oval in shape, which means elliptical galaxies are oval in shape.
The two correct statements that describe elliptical galaxies are:
B. They are the most common galaxy type.
C. They typically contain very little gas and dust.
Elliptical galaxies are galaxies where you will find little or no gas and dust. The galaxies that are numerous in number are the elliptical galaxies. In the elliptical galaxy, you can't find any spiral component in it.Therefore, from the above explanation, we can see that option B and C is the correct option.
To learn more, visit the link below:
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The statements which describes elliptical galaxies are Choice B and Choice C:
They are the most common galaxy type.They typically contain very little gas and dust.Elliptical galaxies are the most abundant type of galaxies found in the universe although because of their age and dim qualities, they're frequently outshone by younger, brighter collections of starsElliptical galaxies are characterized by the presence of less gas and dust and as such, new shiny stars are not born and the dim nature of elliptical galaxies can be attributed to this.Ultimately, elliptical galaxies are the oldest and are the most common galaxy type and they typically contain very little gas and dust.
Read more:
https://brainly.com/question/14459434
What is the major difference between metallic bonding and ionic bonding?
Answer:
The key difference between ionic bonding and metallic bonding is that the ionic bonding takes place between positive and negative ions whereas the metallic bonding takes place between positive ions and electrons.
Explanation:
About (metallic bonding) → Metallic bonding is a type of chemical bonding that arises from the electrostatic attractive force between conduction electrons and positively charged metal ions.
About (ionic bonding) → Ionic bonding is a type of chemical bonding that involves the electrostatic attraction between oppositely charged ions, or between two atoms with sharply different electronegativities, and is the primary interaction occurring in ionic compounds
I hope this helps!
How many milliliters are in 3.2 L? (1000 mL = 1L)
Answer: 3200ml.
Please give brainliest.
Answer:
3200ml
Explanation:
[tex](3.2L)\frac{1000mL}{1L} = 3200mL[/tex]
HELP me please !!!!
Helen is riding down a freeway on her motorcycle at 95kilometersperhour. At this speed, how far will Helen ride in 2hours?
OMG LOOK AT THIS! YOU WON'T BELIEVE IT!!!!!!!!!!!!
what would happen to the weather if half of the human race died off? would it get colder? why?
it would get healthier considering the stuff we put into the air and weather
And the decaying bodies from the virus you talked about would decompose and go into the soil creating natural fertilizer which means better plans moer air better weather
what are adaptations needed for animals to survive on grassland?
Answer:
short teeth, short hair, camoflauge, and speed
Explanation:
Answer:
speed and awareness
Explanation:
Which of the following is a product in the process of photosynthesis?
O Nitrogen
O Water
O Glucose
O Sunlight
Answer:
glucose is the product in the process of photosynthesisBy the time children are five years old:
A. the typical 90-minute sleep cycles of alternating REM and NREM are established.
B. about 50 percent of sleep time is spent in REM sleep and 50 percent is spent in quiet sleep that is very similar to NREM stages 1 and 2.
C. their sleep pattern is characterized by 60-minute sleep cycles, producing up to 13 cycles per day.
D. they will begin to experience their first dreams and nightmares.
Option D is correct. Around the age of five, children begin to experience their first dreams and nightmares
By the time children are five years old, several developments occur in their sleep patterns.
Option A is incorrect because the typical 90-minute sleep cycles of alternating REM (Rapid Eye Movement) and NREM (Non-Rapid Eye Movement) are not yet established at this age.
Option B is also incorrect as the sleep time distribution between REM sleep and quiet sleep (similar to NREM stages 1 and 2) is not necessarily equal at this stage.
Option C is inaccurate because 60-minute sleep cycles producing up to 13 cycles per day do not align with the typical sleep patterns of five-year-olds.
However, option D is correct. Around the age of five, children begin to experience their first dreams and nightmares.
This is an important milestone in their cognitive and emotional development, as it reflects the maturation of the brain regions involved in dreaming and the processing of emotions during sleep.
For more such questions on nightmares
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PLz help Asap 10 POINT
I MIGHT GIVE BRAINLIST IF RIGHT AND IF I CAN.
Answer:
Mars has a thin atmosphere
Explanation:
Okay, so this is going to sound crazy but bare with me. Mar's atmosphere is thin. There is little to no gravitational pull for the atmosphere to stay. Also, no, humans will not be able to live on Mars because the atmosphere, quite literally, contains 1% oxygen. Hopefully this helps! Earth's is thick because of the gravitational pull and gases in Earth's surface.