Explanation: Slowing Down (or Stopping) occurs when the force of kinetic friction is greater than that of the external force. This also follows Newton's first law of motion as there exists a net force on the object.
Which two terms describe salt (NaCI)
Answer:
Sodium chloride, regular table salt, is also known as the mineral halite.
...
Follow-Up Questions:
Find sodium and chlorine on The Periodic Table of the Elements. ...
NaCl is known as an ionic compound. ...
Chlorine is known as a diatomic molecule.
If a ball is thrown alt 96 m/s, and it travels 3 seconds, what is the total distance the ball travelec
Answer: 288 m
Explanation: 288 m is the correct answer because the question states that the ball is thrown at 96 m every second, and our question tells us that the ball travels 3 seconds. This means we have to multiply 96 x 3 = 288 m.
Answer:
288
Explanation:
A boy rides a sled down a steep, snow.covered hill. Which of
the following takes place during the child's ride?
a
Potential energy decreases and kinetic energy
increases.
Need a Hint?
b
Potential energy increases and kinetic energy
decreases
c Both kinetic and potential energy increase.
Answer:
a. Potential energy decreases and Kinetic energy increases
Explanation:
Because as he comes down due to its steepness the speed of the boy or you can say his KE increases and since he comes from a high position (hill) to the lower ground his potential energy decreases simultaneously
Answer:
Potential energy decreases and kinetic energy increases.
Explanation:
That was the answer on my CK12
ANSWER ASAP GIVING BRAINLIEST FIVE STARS AND A HEART!
As sound waves move throughout a medium the particles from it vibrate in different directions.
Answer:
Sound waves in air (and any fluid medium) are longitudinal waves because particles of the medium through which the sound is transported vibrate parallel to the direction that the sound wave moves. A vibrating string can create longitudinal waves as depicted in the animation below.
A ferris wheel with radius r rotates freely about its central
point with initial angular speed wi. A cart on the end
moves at linear speed 2v.
Suddenly, the ride deaccelerates so the cart moves with
speed v. The final angular speed is Of.
How does the angular speed of the ferris wheel
change?
Choose 1 answer:
Answer:
decreases by 2
Explanation:
The angular speed of the ferris wheel decreased by a factor of 2.
Angular speedThe angular speed of an object is the rate of change of angular displacement with time.
Relationship between angular speed and linear speedv = ωr
[tex]r = \frac{\omega }{v} \\\\\frac{\omega_1 }{v_1} = \frac{\omega_2 }{v_2} \\\\\omega_2 = \frac{\omega _1 v_2}{v_1} \\\\\omega _2 = \frac{\omega _i \times v}{2v} \\\\\omega _2 = \frac{1}{2} (\omega _1)[/tex]
Thus, the angular speed of the ferris wheel decreased by a factor of 2.
Learn more about angular speed here: https://brainly.com/question/6860269
A hummingbird has a mass of about 1.7 g. Suppose a hummingbird does 0.15 J of work against gravity, so that it ascends straight up with a net acceleration of 1.2 m/s2. How far up does it move?
Answer:
2 m long, how wide is it? SOLUTION. Given: F = 60.0 N. W = 2.05 × 105. J x = 9.60 × 102 m. Unknown: d = ? ... moved? 3. A hummingbird has a mass of about 1.7 g. Suppose a hummingbird does 0.15 J of work against gravity, so that it ascends straight up with a net acceleration of 1.2 m/s. 2 . How far up does it move? 4.
Explanation: hope this helps plz help me with my question
Question 5
2 pts
(04.03 MC)
Which types of changes must follow the law of conservation of mass? (2 points)
O Both physical and chemical changes
Neither physical nor chemical changes
O Only physical changes
O Only chemical changes
Answer:
A Both physical and chemical changes.
Explanation:
Explain what was ultimately responsible for London’s “killer fog” in 1952.
Answer:
possible answer from edge
Explanation:
After World War II the only coal available to burn residentially, either for cooking or warmth, was of poor quality and contained large amounts of contaminants that made its fumes toxic. So when millions of homes in London burned this low quality coal and the local atmosphere over and around London stagnated, there was nowhere for the fumes to go. This stagnation allowed the toxic coal fumes to build up until they became physically harmful to humans and animals.
Burning of low quality coal was ultimately responsible for London’s “killer fog” in 1952.
What is Coal?This is a type of sedimentary rock which is combustible and contain high amounts of carbon and hydrocarbon.
The low quality coal contained a lot of contaminants which was released into the atmosphere thereby creating the “killer fog” which adversely affected residents.
Read more about Coal here https://brainly.com/question/22647554
#SPJ2
This type of bike tire is thinner, lighter, more expensive, and punctures easily.
Helppp me obi-wan canobi. you are my only hope ;) hehe
Answer:
A
Explanation:
Answer:
A.
Explanation:
Which device uses a rotating electric power source to produce a magnetic field?
A. a motor
B. A step-up transformer
C. A step-down transformer
D. A generator
Answer:
A. a motor
Explanation:
A motor is an electrical device or machine that converts electrical energy into mechanical energy. That is, a motor takes electrical energy to produce motion. There are different types of motors such as DC motor, induction motor and so on.
When electrical current flows through a coil, a magnetic flux is been produced, therefore when a rotating power source is supplied to coil of a motor, a magnetic field is produced which causes torque.
Answer:
A: Motor.
Explanation:
It’ll be a motor because motors use rotating electric power sources to produce magnetic fields.
Which statement about force is incorrect
A. Some forces cause objects around us to move.
B. Some forces keep objects around us from moving
C. Force is the ability to change motion and transfer matter.
D. Force causes changes in the motion and energy of matter.
Answer:
I don't know sorry brother/sister
Explanation:
please mark as brilliant
A sound wave traveling through dry air has a frequency of 16 Hz, a wavelength of 22 m, and a speed of 350 m/s. When the sound wave passes through a cloud of nitrous oxide, its wavelength changes to 16 m, while its frequency remains the same. What is its new speed? (The equation for the speed of a wave is v= f x 1.)
A. 350 m/s
B. 16 m/s
C. 5,600 m/s
D. 256 m/s
It's D
Answer:
D. 256 m/s
Explanation:
[tex]f[/tex] = Frequency of the wave = [tex]16\ \text{Hz}[/tex]
[tex]\lambda[/tex] = Wavelength = [tex]16\ \text{m}[/tex]
Speed of a wave is given by
[tex]v=f\lambda[/tex]
[tex]\Rightarrow v=16\times 16[/tex]
[tex]\Rightarrow v=256\ \text{m/s}[/tex]
The speed of the wave as it passes through the cloud of nitrous oxide is [tex]256\ \text{m/s}[/tex].
Answer:
D. 256 m/s
Explanation:
d. d as in dog
Is steam gas? If not what is?
Answer:
steam is a gas
Explanation:
Answer: Steam is an invisible gas, unlike water vapor, which appears as a mist or fog.
Explanation:
Plz help me
A negative charge of-3.0Cand a lositive charge of 3.0 Care separated by 1m, What is the force between the two
charges?
A negative charge of -0,5 Cexerts a repelling force of 10.0 N on a second charge that is 0.5m away. What is the sign
and magnitude of the second charge?
R21
Answer:
sign of the other charge is -ve
Which term describes this diagram
A. food web
B.trophic level
C. Food chain
D. Matter cycle
Answer:
the answer is letter; C
Explanation:
The pressure of a liquid at the 10.2 meters depth is 80100 Pascal. - What is the density of the fluid in kg/cubic meter?
Answer:
8165.138kg/cubic meter
Explanation:
Pressure= 80100 Pascal.= 1N/m^2
Height=10.2 meters
density of the fluid in kg/cubic meter= ?
g=acceleration due to gravity= 9.81m/s^2
The pressure of a system can be calculated using the expression below
P = ρ g h
Where
p =pressure,
h =depth of the liquid,
ρ = density of the liquid,
g = acceleration due to gravity.
If we substitute those values we have
80100 1N/m^2= ρ × 9.81m/s^2
ρ= 80100/9.81
ρ=8165.138kg/cubic meter
Hence, the density of the fluid in kg/cubic meter is 8165.138kg/cubic meter
Help!
In a school zone, speeding fines?
A. are the same.
B. are doubled.
C. are tripled.
Earth's gravity is pulling a ball downward toward Earth. What is the reaction force?
Answer: Air resistance is "pushing" the ball upwards.
Explanation:
I need help y’all
Help me out
Answer:. 4+5+34+34+44+53 equals174 divide by 6 equals 29 hope this helps ®:]©™
Explanation:
manita carries a box of mass 40kg. What is the wieght of the box?
Answer:
40kg
Explanation:
that the answer
PLEASE HELP!!
Find the change in temperature of each sample after the hot water was added. Fill in the table with the data you collected
in parts C and D. To find the change in a sample's temperature, subtract the starting temperature from the ending
temperature.
Answer:
Sample Starting Temperature Ending Temperature Change in Temperature
50 g sand
50 g water
100 g water
Explanation:
Its
20C
32C
46C
Answer:
Explanation:
A 8.0-kg ball is thrown towards a wall with a speed of 9.0 m/s. The ball hits the wall and rebounds backward with a speed of 2.0 m/s. What is the momentum change experienced by the ball?
Answer:
DP = 56 [kg*m/s]
Explanation:
We know that momentum is defined by the product of mass by Velocity. In this way by means of the following equation, we can calculate the impulse.
[tex]P=m*v\\[/tex]
where:
P = momentum [kg*m/s]
m = mass [kg]
v = velocity [m/s]
Now replacing:
[tex]P=8*9\\P=72[kg*m/s][/tex]
And after the ball hits the wall:
[tex]P_{2}=8*2\\P_{2}=16[kg*m/s][/tex]
The change in momentum is equal to:
[tex]DP=72-16\\DP = 56 [kg*m/s][/tex]
Solar energy and hydroelectric energy are important sources of energy. Find out more about either one of these forms of energy. What is being done to make it a more efficient source of energy, and where it is being used in the United States?
Answer:
Question: Find out more about either one of these forms of energy
Answer:
Solar energy: This is energy generated from the sunlight, and it can be converted to other energy that can be useful. Solar energy from the sun considered a clean source of electricity can be converted to a usable electricity source or stores the light in batteries for thermal use. This energy conversion is possible through the use of solar panels attached to where the conversion would take place so as to capture the light from the sun.
Question: What is being done to make it a more efficient source of energy
Answer:
1. When using solar energy to power homes, it is more efficient to have panels on a green roof because of the characteristics of this roof not to reflect or lose more light from the sun.
2. Improvements on the type of solar cell to use for instance that are cheaper and could maximize the energy from the sun are all ways that make it more efficient.
3. Since solar panels don't produce energy at night, usage of batteries that could store electricity during the day or when the sun is not obscured would make solar more efficient.
Question: where it is being used in the United States?
Answer:
1. California
2. Nevada
3. New York
4. Texas
If a device uses mains electricity at 230v and has a 13a fuse in the plug wht is the maximmum power it can safley use?
Answer:
2990W
Explanation:
Given parameters:
Voltage = 230V
Current = 13A
Unknown:
Maximum power it can safely use = ?
Solution:
To solve this problem;
Power = Current x Voltage
Power = 230 x 13 = 2990W
Two reindeer-in-training pull on a sleigh. Connie pulls with a force of 200
Nat an angle of 60 degrees above the x-axis, while Randolph pulls with a
force of 800 N at an angle of 60 degrees below the x-axis. What is their
resultant force on the sleigh?
Answer:
Their resultant force magnitude on the sleigh is approximately 583.095 N
Explanation:
The given parameters are;
The magnitude and direction in which the two reindeer-in-training pull on the sleigh are;
The force with which Connie pulls on the sleigh, F₁ = 200 N
The direction in which Connie pulls on the sleigh = 60° above the x-axis
The force with which Randolph pulls on the sleigh, F₂ = 800 N
The direction in which Connie pulls on the sleigh = 60° below the x-axis
The vector form of the force with which the two reindeer-in-training pulls the sleigh is given as follows;
[tex]\underset{F_1}{\rightarrow}[/tex] = 200 × cos(60°)·i + 200 × sin(60°)·j = 100·i + (100·√3)·j
[tex]\underset{F_2}{\rightarrow}[/tex] = 800 × cos(60°)·i - 800 × sin(60°)·j = 400·i - (400·√3)·j
The resultant force, R = [tex]\underset{F_1}{\rightarrow}[/tex] + [tex]\underset{F_2}{\rightarrow}[/tex]
∴ R = 100·i + (100·√3)·j + 400·i - (400·√3)·j = 500·i - (300·√3)·j
Their resultant force magnitude on the sleigh, [tex]\left | R \right |[/tex] = √(500² + (-300)²) ≈ 583.095 N
The direction of the resultant force = arctan(-300/500) = arctan(-0.6) ≈ -30.964 which is approximately 30.964° below the x-axis.
To remove a nut from an old rusty bolt, you apply a 100-N force to the
end of a wrench perpendicular to the wrench handle. The distance from
the applied force to the axis of the bolt is 25 cm. What is the torque
exerted on the bolt in N-m?
Answer:
yes its 25cmjdj8dnen8dnejdid
A black hole is a region of spacetime where gravity is so strong that nothing—no particles or even electromagnetic radiation such as light—can escape from it.
So were do you go if you get sucked into a black hole? What happens to Your body? Do you travel to another solar system?
Answer:
I think you would die instantly-
Explanation:
wouldnt the air force be to much and your insides will be like jelly?? and wouldnt you snap in to your something? or am i wrong??
An electrical device has a resistance of 60 ohms and requires a current
of 0.15 A to work properly. How many 1.5 V cells does the device require?
Answer:
6
Explanation:
Given that :
Resistance (R) = 60 ohms
Required current (I) = 0.15 ampere
Voltage (V) = current (I) * Resistance (R)
V = 0.15 * 60
V = 9v
Number of 1.5V cells required by the device :
9V / 1.5V
= 6
Hence, the device requires six 1.5V cells
1. Deshaun Watson (100 kg) accelerates from rest to 9.0 m/s in 1.5 s. What is the average power
output of Deshaun in kW? (2 mark)
Answer:
P = 5400[W]
Explanation:
We must use the following equation of kinematics to calculate the acceleration.
[tex]v_{f}=v_{o}+a*t[/tex]
where:
Vf = final velocity = 9 [m/s]
Vo = initial velocity = 0 (starting from rest)
a = acceleration [m/s²]
t = time = 1.5 [s]
[tex]9=0+a*1.5\\a=9/1.5\\a=6[m/s^{2} ][/tex]
Now with this second equation of kinematics, we can determine the distance traveled.
[tex]v_{f}^{2}=v_{o}^{2}+2*a*x[/tex]
where:
x= distance [m]
[tex]9^{2} = 0 +2*6*x\\12*x=81\\x=6.75[m][/tex]
Now we must use Newton's second law which tells us that the sum of forces is equal to the product of mass by acceleration.
∑F = m*a
Now replacing:
[tex]F=100*6\\F=600[N][/tex]
Ahora la potencia se puede calcular por medio del producto de la fuerza por velocidad.
[tex]P=F*v[/tex]
where:
P = power [W]
F = force = 600 [N]
v = velocity = 9 [m/s]
[tex]P=9*600\\P=5400[W][/tex]