Answer:
D) A car requires more applied force to move on wet pavement
Explanation:
The coefficient of friction determines the frictional force that the ground applies on the car .
Maximum force of friction generated = μ R where μ is coefficient of friction and R is reaction force of the ground
Reaction force of the ground = mg or weight of the car . Since weight is same on dry and wet ground so normal force will be same is both the case .
Force of friction generated in respect of dry pavement will be more because of greater coefficient of friction .
Friction force helps in driving a car in forward direction hence it is easy to drive car on dry pavement . On wet pavement , it will slip off at the same place rather than move forward .
Hector is walking his dog (Fido) around the neighborhood. Upon arriving at
Fidella's house (a friend of Fido's), Fido turns part mule and refuses to continue
on the walk. Hector yanks on the chain with a 67.0 N force at an angle of 30.0°
above the horizontal. Determine the horizontal and vertical components of the
tension force.
If Hector yanks on the chain with a 67.0 N force at an angle of 30.0°
above the horizontal, the horizontal and vertical components of the
tension force. is mathematically given as
Fx=58NFy=33.5NWhat are the horizontal and vertical components of the tension force?Generally, the equation for the coplanar forces is mathematically given as
For x axis
Fx=67cos30
Fx=58N
For y axis
Fy=67sin30
Fy=33.5N
In conclusion, The horizontal and vertical components
Fx=58N
Fy=33.5N
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do you now how hot suns core is
Answer:
Core: the temperature at the very center of the Sun is about 27 million degrees Farenheit (F). The temperature cools down through the radiative and convective layers that make up the Sun's core.
Explanation:
it is about 27 million degrees Fahrenheit
good luck :D
If you pull up on a bucket with a tension force of 15 N and the bucket has a weight of 15 N, what is the net force acting on the bucket?
15 Nup
15 N down
30 N up
O N
Answer:
F = 0 [N]
Explanation:
To solve this problem we must perform a summation of forces in the direction of the vertical axis. Where the positive force is that of the tension of the upward force, while the force exerted by the weight is directed downward with a negative sign.
ΣF = 0
15 - 15 + F = 0
F = 0 [N]
how can I determine the pressure of a certain place. I mean formula of pressure
Answer:
Pressure and force are related, and so you can calculate one if you know the other by using the physics equation, P = F/A. Because pressure is force divided by area, its meter-kilogram-second (MKS) units are newtons per square meter, or N/m2.
Which is a characteristic of centripetal acceleration?
A. It is directed outward from the center of a circle.
B. It is directed inward, toward the center of a circle
C. It results in an object moving faster.
D. It results in an object moving slower.
Answer: The Answer is B. It is directed inward, toward the center of a circle.
Explanation:
An engineer must design a runway to accommodate airplanes that must reach a ground speed velocity of 61 m/s before they can take off. These planes are capable of accelerating at a rate of 2.5 m/s2.
a.) How long will it take the planes to reach takeoff speed?
b.)What must be the minimum length of the runway?
a) It will take 24.4 second the planes to reach takeoff speed.
b) The minimum length of the runway must be 744.2 meter.
What is acceleration?Acceleration is the rate at which speed and direction of velocity vary over time. A point or object going straight ahead is accelerated when it accelerates or decelerates.
Even if the speed is constant, motion on a circle accelerates because the direction is always shifting. Both effects contribute to the acceleration for all other motions.
Given parameters:
Acceleration of the plane: a = 2.5 m/s².
Final speed of the plane: v = 61 m/s.
Initial speed of the plane: u = 0 m/s.
Hence, it will take the planes to reach takeoff speed = final speed/acceleration
= 61 m/s / 2.5 m/s²
= 24.4 second.
The minimum length of the runway must be = (final speed)²/(2×acceleration)
= ( 61)²/(2×2.5) meters
= 744.2 meter.
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What are the factors that affect the electric force?
Answer:
Strength of the charge.
Explanation:
Distance from the charge.
Friction.
Conduction (Direct Contact)
Induction.
18.1 Assessment.
18.1 Assessment.
Net Charge.
The diagram shows two forces acting on an object. The forces have magnitudes F1 = 2.7 N and F2 = 0.80 N.
What third force will cause the object to be in equilibrium?
O2.8 Nat 163° counterclockwise from F1
O 1.8 N at 163° counterclockwise fromF1
O2.8 N at 123° counterclockwise from F1
O 3.0 N at 147° counterclockwise from F1
Answer:
2.8 [N] at 163° counterclockwise from F1
Explanation:
To solve this problem we must perform a summation of forces on the X & y axes, these summations of forces must be equal to zero.
ΣFx = 0
- F1 + Fx = 0
- 2.7 + Fx = 0
Fx = 2.7 [N]
ΣFy = 0
- Fy + 0.8 = 0
Fy = 0.8 [N]
Now using the Pythagorean theorem we can calculate the magnitude of the force.
F = √(2.7)² + (0.8)²
F = 2.81 [N]
Now we can determine the angle using the tangent of the angle.
tan (α) = F2/F1
α = tan^-1 (0.8/2.7)
α = 16.5°
The force is in the fourth quadrant, so we need to subtract 180° from the calculated angle.
180 - 16.5 = 163.5°
Therefore the force is going to the 2.8 [N] at 163° counterclockwise from F1
Use one letter for each letter. Please I need help
Answer:
A. Battery
B. Switch
C. Element
D. Wire
Explanation:
I'm not completely positive.
Answer:
A:Battery B:Resistor C:Element D:wire
Explanation:
Which of the following is a compound?
A. Na+
B. NaCl
C. Na
D. NaCl + Ag2O → AgCl + Na2O
A. Na+ : cation
B. NaCl : compound
C. Na : element
D. NaCl + Ag2O → AgCl + Na2O : chemical reaction
During his recent skydiving adventure, Luke Skyfaller has reached a terminal speed of 9.8 m/s as he approach the ground with his parachute. During an attempt to snap one last photo with his camera Luke fumbled it from a height of 52.8 m above the ground determine the speed with which the camera hits the ground.
Answer:
The correct solution is "33.62 m/s".
Explanation:
The given values are:
Speed
u = 9.8 m/s
Height
s = 52.8 m
As we know,
⇒ [tex]v^2 = u^2 + 2as[/tex]
On putting the estimated values, we get
⇒ [tex]=(9.8)^2+2\times 9.8\times 52.8[/tex]
⇒ [tex]=96.04+1034.88[/tex]
⇒ [tex]=\sqrt{1130.92}[/tex]
⇒ [tex]=33.62 \ m/s[/tex]
!Will give brainliest! A journal publication is used during which of the following steps of the scientific method?
information
observation
experiment
problem
observations and collect data
Make Predictions
Gather Data
Analyze the Data
Draw Conclusions
the scientific method include: 1) asking a question about something you observe, 2) doing background research to learn what is already known about the topic, 3) constructing a hypothesis, 4) experimenting to test the hypothesis, 5) analyzing the data from the experiment and drawing conclusions,
1 The photoelectric effect is good evidence for __________.
A both wave and particle nature, because it blends photons with electrons
B the wave nature of EM radiation, because it shows how wave amplitude is proportional to quanta of energy referred to as photons
C the particle nature of EM radiation, because it shows how frequency is proportional to quanta of energy referred to as photons
D neither the wave nor the particle nature of light, because results vary based on the frequency of light used
2 How can you calculate the momentum of a photon?
A the product of 2, pi, and the photon's radius
B the product of mass and velocity
C a photon doesn't have momentum because it has no mass
D Planck's constant divided by the photon's wavelength
3 Interference and diffraction patterns are good evidence for __________.
A the particle nature of EM radiation
B neither the particle nature nor the wave nature of EM radiation
C both the particle nature and wave nature of EM radiation
D the wave nature of EM radiation
4 The ultraviolet catastrophe is good evidence for the:(1 point)
A particle nature of quanta
B wave nature of quanta
C neither the wave nor the particle nature of quanta
D both particle and wave nature of quanta
Answer:
1. the particle nature of EM radiation, because it shows how frequency is proportional to quanta of energy referred to as photons
2. Planck's constant divided by the photon's wavelength
3. the wave nature of EM radiation
4. particle nature of quanta
Read the chapter next time bozo
Explanation:
The photoelectric effect is good evidence for
The particle nature of EM radiation, because it shows how frequency is proportional to quanta of energy referred to as photons.Planck's constant divided by the photon's wavelength.The wave nature of EM radiation.Particle nature of quanta.What are two nature of light?Light has two different nature:
Wave nature Particle natureWhat do you mean by particle nature of light?Particle nature of light states that light consists of particles called 'Photons'.Photons are considered as bunch of energy , which represents Electromagnetic radiation.What is wave nature of light?Wave nature of light states that light behaves as an electromagnetic wave.
What is photoelectric effect?The phenomenon of emission of electrons from the surface of the metal when the light of suitable frequency falls on it.
What is Plank's constant?The physical constant that relates the energy carried by a single photon to its corresponding frequency.It is denoted by 'h'.Its value is 6.62607015 × 10-34 m2 kg / s.Thus , we can say that, The photoelectric effect is good evidence for
The particle nature of EM radiation, because it shows how frequency is proportional to quanta of energy referred to as photons.Planck's constant divided by the photon's wavelength.The wave nature of EM radiation.Particle nature of quanta.Learn more about Photoelectric effect here -
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see attached, thanks !
Answer:
B = Frictional force
What is a metal?????????
Answer:
A metal is a material that, when freshly prepared, polished, or fractured, shows a lustrous appearance, and conducts electricity and heat relatively well. Metals are typically malleable (they can be hammered into thin sheets) or ductile (can be drawn into wires). A metal may be a chemical element such as iron; an alloy such as stainless steel; or a molecular compound such as polymeric sulfur nitride.
i been answering all your qustions but noone can help me ? crazy but can someone pls help me its due today ill give alott of points if u help
01.07 Motion Discussion-Based Assessment
Review the topics listed from the lesson.
Arrange to complete the discussion-based assessment with your instructor.
Submit the date and time you spoke with your instructor for the 01.07 Motion Discussion-Based Assessment.
Answer:
Do you have a picture of your work?, Maybe i could help with it if you did.
Answer:
Hi, can you send the list of topics? I'd be happy to help you review. Also, did you meet with your instructor to complete the discussion-based assessment?
Explanation:
please answer my question :)
Answer:
Galileo discovered that objects that are more dense, or have more mass, fall at a faster rate than less dense objects, due to this air resistance. A feather and brick dropped together. Air resistance causes the feather to fall more slowly.
what state of matter is the sun
Answer:
the sun is plasma
Explanation:
it is a hot ball of gas made out of oxygen
Answer:
Plasma
Explanation:
All stars are made of gas, however the sun is so hot that most of that gas is plasma
lighting is to thunder as lunch
Answer:
is to meal
Explanation:
plz mark brainlest
Two angles are complementary. The first angle measures 39º and the second angle
is 3y. What is the value of y?
O 51°
O 470
O 11°
O 17°
Answer:
11
Explanation:
i've been in k12 and i got an a on this anser
What are the similarities of gravity and air resistance?
Answer: Gravity or Air Resistance. As you saw and read on the previous screens, the force of gravity causes an object to accelerate toward the ground. However, the force of air resistance counteracts gravity and affects how fast an object falls. In this activity, you will compare the forces of gravity and air resistance.
Explanation:
The largest single entity in the universe is a black hole.
True
False
How much work is done if you push a couch 10m across the floor with 5N of force?
Work = Force * Distance = 5N * 10m = 50Nm
Force: 5NDistance: 10mHope it helps!
Random question? How many grains of sand are there in the entire world?
Answer:
five hundred quadrillion
Answer:
there is roughly 7.5 x 10^18 grains of sand, or even seven quintillion grains of sand on earth
How will you determine the volume of a cuboid ? Write the formula you will use.
this is a physics question please help
Answer:
mass×Velocity
Explanation:
b/c when we want to get KE =one over two mass times velocity square
An automobile manufacturer claims that its
product will travel 0.4 km in 24 s, starting
from rest.
What is the magnitude of the constant acceleration required to do this?
Answer:
uncle
Explanation:why not
2. A car travels 100 km due East in 2 hours. It then travels 50 km South in 1 hour. What is its average velocity?
Answer: The average velocity of the car is 37.27 km/h.
Explanation:
Answer:
Solution
100 km into m/s= 55.4 m/s
59 km into m/s = 13.8m/s
Average velocity= v+u/2
=69.2/2
= 34.6
I think it's average velocity is 35.6
I think it will help
What is the representation of the momentum vector?
1. a number
2. a dot
3. a straight line
4. an arrow **
an arrow
Explanation:
momentum is a vector quantity it has both magnitude and direction.
a vector diagram can be used to represent this principle of momentum conservation such as diagram uses an arrow to represent the magnitude and direction of the momentum vector for the individual objects before the collision and combined after the collision
The best representation of momentum vector is ; ( 4 ) An arrow
A momentum is a vector quantity with both magnitude and direction and it simply represents a mass ( object ) in motion. momentum is calculated as ;
P = mV . where m = mass of object , v = velocity of object .
An arrow is a good representation of momentum vector because it has both mass and velocity when fired from bow.
Hence we can conclude that the best representation of momentum vector is an arrow.
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An ultra-low friction pulley deal is as shown. The two weights experience an acceleration of 3.8m/s2. The first weight has 1.08kg. Find the mass of the second weight
Answer:
The mass of the second weight is approximately 0.477 kg
Explanation:
The given parameters are;
The acceleration experienced by the two weights = 3.8 m/s²
The mass of the first weight = 1.08 kg
The formula for the acceleration, a, of weights attached to a friction pulley, is given as follows;
[tex]a = \dfrac{g \cdot (M - m)}{M + m}[/tex]
Where;
a = The common acceleration of the two weights
g = The acceleration due to gravity = 9.81 m/s²
M = The mass of the first weight = 1.08 kg
m = The mass of the second weight
Therefore, we have;
[tex]m = \dfrac{M\cdot (g -a )}{g + a} = \dfrac{1.08\times (9.81 -3.8 )}{9.81 + 3.8} \approx 0.477[/tex]
The mass of the second weight = m ≈ 0.477 kg
The mass of the second weight ≈ 0.477 kg.