Answer:
Newton's first law says that without external forces, your velocity doesn't change. Remember that velocity is both how fast you're going but also what direction you're going.
Normally, a car turns because the tires on the ground have traction so they have friction which allows them to change direction and turn. But on an icy highway, tires can't get much friction so it's really hard to turn.
Because the ice stops friction, a car can't get enough force to change direction and follow the curve, meaning it will try and stay going in the same direction, which is dangerous.
La distancia entre dos ciudades es de 100 millas. ¿Cuál es el número de kilómetros entre las dos ciudades?
Answer:
161 kilómetros
Explanation:
(Puedo dar la respuesta en inglés también si la necesitas)
Hay aproximadamente 1,61 kilómetros en una milla.
Para convertir millas a kilómetros, multiplica 100 por 1,61, y obtienes 161 kilómetros.
100*1,61 = 161
¡Espero que esto ayude!
what is spring constant
Answer:
sping constant is the force needed to stretch or compress a string
The formula:
Fs=-kx
Fs= force
k= spring constant
x= amount of extension
what do you think will happen to Charlie now that he is smart? Explain.
It is recommended that children have no more than two sets of dental X-rays per year. Although X-rays have many benefits, they can be dangerous to human health because they are
Although X-rays have many benefits, they can be dangerous to human health because they are short wavelength, high frequency, with photons sufficiently energetic to damage DNA molecules.
A 150 N boy rides a 60 N bicycle a total of 200 m at a constant speed. The frictional force against the forward motion of the bicycle equals 35 N. How much work does the boy do? (Hint: Do sum of all forces first.)
Answer:
W = 7000 J
Explanation:
To solve this problem we use that the speed of the bicycle is constant, therefore its acceleration is zero
F -fr = 0
F = fr
where F is the force applied by the child
Work is defined by
W = F. x
W = F x cos θ
in this case the child's force is parallel to the movement, therefore the angle is zero and cos 0 = 1
let's calculate
W = 35 200
W = 7000 J
what is the mass of 3 m3 of a substance having density 1200 kg/m3
Answer:
3600 kg
Explanation:
From the question,
Density = Mass/Volume
D = M/V.............................. Equation 1
Where D = Density of the substance, M = mass of the substance, V = Volume of the subtance.
Make M the subject of the equation
M = D×V ............................ Equation 2
Given: D = 1200 kg/m³, V = 3 m³.
Substitute these values into equation 2
M = 1200×3
M = 3600 kg.
Hence the mass of the substance is 3600 kg
state two possible changes that cause a larger e.m.f to be induced
There are therefore three ways an emf can be induced in a loop: Change the magnetic field. Change the area of the loop. Change the angle between the field and the loop.
As the area decreases, the magnetic flux will also be decreased. As a result, the induced emf will be increased.
What is meant by induced emf ?Whenever the magnetic flux associated with a circuit is changed, an emf will be induced in it. This is called induced emf.
Here,
The value of induced emf is the rate of change of magnetic flux.
So, the induced emf,
ε = -dФ/dt
The negative sign indicates that the induced emf always opposes the change in flux.
Magnetic flux, Ф = NBA cosθ
So, ε = d(NBA cosθ)/dt
There are certain changes that can cause a larger emf to be induced:
1) By decreasing the magnetic field in the conductor.
As the magnetic field in the conductor decreases, the magnetic flux associated with it also decreases.
Therefore, according to Lenz's law, the induced emf will be increased.
2) By decreasing the area of cross-section of the conductor.
As the area decreases, the magnetic flux will also be decreased. As a result, the induced emf will be increased.
Hence,
As the area decreases, the magnetic flux will also be decreased. As a result, the induced emf will be increased.
To learn more about induced emf, click:
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A 2500kg automobile develops 30kW of power to drive with a constant velocity of 90km/h on a level ground. What power must it develop to drive up a 15 degree hill with the same velocity.
Answer:
the power developed by the automobile is 7,764.57 W.
Explanation:
Given;
mass of the automobile, m = 2500 kg
initial power developed by the automobile, P₁ = 30 kW = 30,000 W
initial speed of the automobile, v₁ = 90 km/h = 25 m/s
inclination of the hill, θ = 15⁰
second speed of the automobile, v₂ = v₁Sinθ
The power developed by the automobile is calculated as;
P = Fv
[tex]F = \frac{P_1}{V_1} = \frac{P_2}{V_2} \\\\P_2 = \frac{P_1V_2}{V_1} \\\\P_2 = \frac{30,000 \ W \ \times 25Sin(15^0)}{25} \\\\P_2 = 30,000 \ \times sin(15^0)\\\\P_2 = 7,764.57 \ W\\\\[/tex]
Therefore, the power developed by the automobile is 7,764.57 W.
Why do we add the masses together after that inelastic collision?
Answer:An inelastic collision is one in which the internal kinetic energy changes (it is not conserved). A collision in which the objects stick together is sometimes called perfectly inelastic because it reduces internal kinetic energy more than does any other type of inelastic collision.People sometimes think that objects must stick together in an inelastic collision. However, objects only stick together during a perfectly inelastic collision. Objects may also bounce off each other or explode apart, and the collision is still considered inelastic as long as kinetic energy is not conserved.
hope this helps have a nice day❤️
Explanation:
A.stationary
B. Accelerating
C. Decelerating
D. Moving at constant speed
Answer:
ACCELERATING OR DECELERATING
Explanation:
I'M NOT SURE
select th
An isotope of uranium contains 92 electrons, 92 protons, and 140 neutrons. The notation for this
isotope is
Answer:
232
U
92
Explanation:
mass number=protons add neutrons
Atomic number= amount of protons
write an essay about the Paralympic and Special Olympic Essay 100 points
soooo
Explanation:
dont know
Answer:
Its 50 points for me but ok 100 4 u nice uh... here. Bringing the 1996 Summer Olympic Games to Atlanta was a long shot. Athens, Greece, was the sentimental favorite to host the centennial games, and tension was palpable as IOC President Juan Antonio Samaranch made the announcement back on Sept. 18, 1990.
"The International Olympic Committee has awarded the 1996 Olympic Games to the city of ... Atlanta," Samaranch revealed.
That announcement launched more than $1 billion of construction projects, from Olympic venues to housing for the athletes. Now, on the 15th anniversary of the games, Atlanta sees both gains and losses from the international event. Bringing the 1996 Summer Olympic Games to Atlanta was a long shot. Athens, Greece, was the sentimental favorite to host the centennial games, and tension was palpable as IOC President Juan Antonio Samaranch made the announcement back on Sept. 18, 1990.
"The International Olympic Committee has awarded the 1996 Olympic Games to the city of ... Atlanta," Samaranch revealed.
That announcement launched more than $1 billion of construction projects, from Olympic venues to housing for the athletes. Now, on the 15th anniversary of the games, Atlanta sees both gains and losses from the international event.
One of the most prominent legacies of the games is Centennial Olympic Park in the heart of Atlanta. The 21-acre plaza glistens in what was an area of urban decay, and children run and linger in the fountain.
Harvey Newman, a professor of public policy at Georgia State University, says the park brought economic development downtown.
"The area surrounding the park has added major hotels, condominiums, new office structures and, of course, people continue to flock to enjoy the Olympic rings fountain," Newman says.
Explanation:
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Calculate the force acting
on a body whose linear momentum changes by 10 kg m/s
in 5 seconds.
Answer:2n
Explanation:10/5=2
When an electric current passes through a wire a magnetic field is formed, this is called______________.
A) Atomic force
B) Intermolecular force
C) Electromagnetism
D) Nuclear spin
If a car is traveling 103 miles per hour, how many miles and how much time would it take for another car to catch up to them from a complete stop?
Answer:
Required distance is 103 miles and the required time is 1 hour
Explanation:
Given;
speed of the car, v = 103 miles per hour
Speed is the given as the ratio of distance traveled to time taken for the motion.
The distance it will take another car to catch up to them from a complete stop is 103 miles and the time it will take the car is 1 hour.
Therefore, required distance is 103 miles and the required time is 1 hour.
(PHYSC) HELPPPP Individuals suffering from somatoform disorders often see several doctors about their symptoms because __________.
A.
doctors often refer their patients for a second opinion
B.
their symptoms often fall under several specialties
C.
doctors get frustrated with them and refuse to treat them
D.
they are looking to find a doctor to give them a diagnosis
Answer:
D.
they are looking to find a doctor to give them a diagnosis
Explanation:
cause I had this answer
Individuals suffering from somatoform disorder generally see many doctors as they are often referred for a second opinion.
What is somatoform disorder?The somatoform disorder also known as a somatic symptom disorder refers to any mental disorder, which displays as physical symptoms that suggest injury or illness. However, it cannot be explained completely by a general medical condition or by the direct effect of a substance.
They are also not attributable to another mental condition like panic disorder. For the individuals diagnosed with somatoform disorder, the results of the medical test either do not explain the symptoms of the person or are either normal.
Therefore, the person with the somatoform disorder generally visits many doctors as they are often referred for a second opinion.
Thus, the correct statement is option A.
Find out more information about somatoform disorder here:
https://brainly.com/question/27245970
what is someones target heart rate at 70% at age 17
Answer: normal
Explanation:
What component in a dry cell is like the hydro sulfuric acid in a wet cell? a) positive electrolyte b) primary contact c) positive electrode d) negative electrolyte
Answer:
d
Explanation:
Hydro sulphuric acid in a wet cell acts as an electrolyte. Similarly in a dry cell ammonium chloride paste acts as electrolyte along with zinc anode, carbon rod as cathode in a cylindrical pot. The dry-cell battery stores energy in an immobilized electrolyte paste, which is ammonium chloride in this case. This minimizes the need for water or a wet electrolyte as in wet batteries.
Find the total current, I and the voltage across each components? Show all the workings clearly.
Explanation:
unable to understand ur question,,,sry!
A student has two magnets of equal strength. She places one on each side of the ramp. She releases a steel ball down the ramp. The student repeats the procedure with both magnets on the same side of the ramp. Predict the path of the ball in each trial.
Your Prediction:
What Happens:
Ans: A student has two magnets of equal strength. She places one on each side of a ramp. She releases a steel ball down the ramp. The student repeats her procedure with both.
Explanation:
Need help with these 2 questions please !!!!!!! ASAP
he diagram shows a person holding a bow and arrow.
A person holds a bow and arrow with the arrow pulled back.
Which will most likely increase the kinetic energy in this system?
pulling farther back on the string
releasing the string
holding the arrow higher
decreasing the mass of the arrow
Answer:
B Relesing the string
Explanation:
got it right on edge
Answer:
b .
:) :) :)
Explanation:
A boy pulls on a 15 kg wagon with a constant net force of 60 N. What is the wagon’s acceleration?
Object 1 starts at 5.4m and moves with a velocity of 1.3m/s. Object 2 starts at 8.1m and moves with a velocity of -2.2m/s. At what time will these two objects collide. *
PLEASE A GOOD ANSWER. IM NEED HELP RN
Answer:
The time after which the two objects will collide is approximately 0.77 seconds
Explanation:
Given that Object 1 and Object 2 start from a point relative to a common reference location, and have the following parameters;
The location Object 1 starts from = 5.4 m from the reference location
The velocity of Object 1, v₁ = 1.3 m/s
The location Object 2 starts from = 8.1 m from the reference location
The velocity of Object 2, v₂ = -2.2 m/s (the direction of the velocity is opposite to the direction of v₁)
Therefore, the distance between Object 1 and Object 2 when they start, 'd', is given as follows;
d = 8.1 m - 5.4 m = 2.7 m
At the time, 't', that elapse when the two objects collide, and given that the objects are moving in opposite direction, we have;
v₁·t - v₂·t = d
Plugging in the values of the variables, we get;
1.3 m/s × t - (-2.2 m/s) × t = 2.7 m
∴ t × (1.3 m/s + 2.2 m/s) = t × 3.5 m/s = 2.7 m
t = 2.7 m/(3.5 m/s) = (27/35) s = [tex]0.7 \overline{714285}[/tex] s ≈ 0.77 s
The time after which the two objects will collide, t ≈ 0.77 seconds.
The Himalayas occur at white type of tectonic plate boundary?
Answer:
Explanation:
The Himalayan mountain range and Tibetan plateau have formed as a result of the collision between the Indian Plate and Eurasian Plate which began 50 million years ago and continues today. 225 million years ago (Ma) India was a large island situated off the Australian coast and separated from Asia by the Tethys Ocean.
Collate the electrical force between and electrons and protons in an atom that are separated by distance of 5.9 e -11m
Answer:
The electrical force between the electrons and protons in the atom is 6.62 x 10⁻⁸ N.
Explanation:
Given;
distance between the electron and proton, r = 5.9 x 10⁻¹¹ m
charge of electron, q₁ = -1.6 x 10⁻¹⁹ C
charge proton, q₂ = +1.6 x 10⁻¹⁹ C
The electric force between the two particles is calculated by Coulomb's law;
[tex]F = \frac{k|q_1|q_2|}{r^2} \\\\F = \frac{(9\times 10^9) \times (1.6\times 10^{-19})^2}{(5.9\times 10^{-11})^2} \\\\F = 6.62 \times 10^{-8} \ N[/tex]
Therefore, the electrical force between the electrons and protons in the atom is 6.62 x 10⁻⁸ N.
8
Select the correct answer.
Which sentence correctly states Boyle's law?
ОА
The pressure on a gas varies inversely with its volume at constant temperature.
OB. The pressure on a gas varies directly with its volume at constant temperature.
Ос.
The pressure on a gas varies directly with its temperature at constant volume.
OD
The pressure on a gas varies inversely with its temperature at constant volume.
OE. The volume of a gas varies directly with its temperature at constant pressure.
Bedrock that is closer to oceanic ridges is younger in age than bedrock that is farther away. What can best be concluded from this
information
what is measurement?
Measurement means weight, size, length, or capacity of something.
Answer:
Measurement is the length, weight, size, quantity, value, or amount of something.
A string can withstand a force of 135 N before breaking. A 2.0 kg mass is tied to the string and whirled in a
horizontal circle with a radius of 1.10 m. What is the maximum speed that the mass can be whirled at before
the string breaks?
The mass would have centripetal acceleration a given by
a = v ² / R
where
v = tangential speed of the mass
R = length of the string
By Newton's second law, a maximum tension of F = 135 N would apply an acceleration of
135 N = (2.0 kg) a → a = 67.5 m/s²
which requires a tangential speed v of
67.5 m/s² = v ² / (1.10 m) → v = √((67.5 m/s²) (1.10 m)) ≈ 8.62 m/s