Answer:
radio waves
microwaves
How to find kinetic energy with force, mass, and distance
Answer:
Explanation:
Set the equations for work and kinetic energy equal to each other. Work equals force times distance and kinetic energy equals one-half the mass of the object times its velocity squared, so F_d = (m_ ÷ _2)_v2. Substitute the measurements for force, distance and mass into the equation.
The energy an object has as a result of motion is known as kinetic energy.
What is Kinetic energy?A force must be applied to an object in order to accelerate it. We must put in effort in order to apply a force.
After the work is finished, energy is transferred to the item, which then moves at a new, constant speed. Kinetic energy is the type of energy that is transferred and is dependent on the mass and speed attained.
The square of the object's velocity determines the kinetic energy. In other words, when an object's velocity twice, its kinetic energy quadruples.
Therefore, The energy an object has as a result of motion is known as kinetic energy.
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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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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]
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
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.
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.
lighting is to thunder as lunch
Answer:
is to meal
Explanation:
plz mark brainlest
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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Two boxes of textbooks, of masses 10 kg and 15 kg, are connected by a lightweight string, and then pulled across a horizontal table by a horizontal applied force, as shown in the diagram above (attached to question).
The applied force has a magnitude of 50 N, and there is no friction between the boxes and table. What is the acceleration of the 10 kg 10 kg box?
A.) 3.3 m/s^2
B.) 2.0 m/s^2
C.) 5.0 m/s^2
D.) The box will not accelerate because the tension force acting on it to the left must also be 50 N 50 N.
Answer:
The correct option is;
B.) 2.0 m/s²
Explanation:
The given information are;
The masses of the boxes are; m₁ = 15 kg and m₂ = 10 kg
The force applied, F = 50 N
The friction force between the blocks and the table = N/A
The equation for the applied force, F = Mass, m × Acceleration, a
Therefore;
a = F/m
Given that the two boxes are attached to each other and to the force by a spring, they will experience the same motion, and therefore, the same acceleration
The total mass (the two blocks) pulled by the applied, 50 N force, [tex]m_T[/tex] = m₁ + m₂ = 10 kg + 15 kg = 25 kg
The acceleration given the blocks by the applied force, a = F/[tex]m_T[/tex] = 50 N/(25 kg) = 50 kg·m/s²/(25 kg) = 2 m/s²
The acceleration experienced by the 10 kg box = The acceleration experienced by the system of the two boxes = 2 m/s².
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
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.
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:
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
Is the answer I provided correct
Answer:
yea, force is mass x acceleration
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:
A device has a resistance of 11 Ω and a current of 12 A. What is it power and potential difference?
Answer:
The potential difference is 132 volt
And the Power is 1584 watt
Explanation:
Given :
Reresistance = 11 Ω
current = 12 A
The Potential difference = IR
V= IR
=> V = 11×12
=> V = 132v
Now ,
Power = VI
=> P = 132×12
=> P = 1584 w
Question :-
A Device has a Resistance of 11 Ohm and a Current of 12 Ampere . What is it Power and Potential Difference .Answer :-
Power of the Device is 1584 Watt .Potential Difference is 132 Volt .Explanation :-
As per the provided information in the given question, we have been given that the Resistance of the Device is 11 Ohm . Current is given as 12 Ampere . And, we have been asked to calculate the Power and Potential Difference .
➻ Now here, First we will find the Potential Difference of the Device :-
V = I RWhere ,
V denotes to the P.DI denotes to the CurrentR denotes to the ResistanceTherefore, by Substituting the given values in the above Formula :-
⇒ P.D = Current × Resistance
⇒ P.D = 11 × 12
⇒ P.D = 132 Volt
Hence ,
Potential Difference is 132 Volt .[tex] \: \: \: \: \: \: \: \rule{150pt} {0.5pt} [/tex]
➻ Now here, we will find the Power :-
P = V IWhere ,
P denotes to the PowerV denotes to the P.DI denotes to the CurrentTherefore, by Substituting the given values in the above Formula :-
⇒ Power = P.D × Current
⇒ Power = 132 × 12
⇒ Power = 1584 Watt
Hence ,
Power of the Device is 1584 Watt .[tex] \underline {\rule{90pt} {4pt}} \: \underline {\rule{90pt} {4pt}} [/tex]
Note :-
In the above Answer , kindly refer that P.D denotes to the Potential Difference .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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The largest single entity in the universe is a black hole.
True
False
A person on a tricycle travels a distance of 45km in 6.1 hrs, what was the speed of the person on the tricycle?
Answer:
7.37 km per hour
Explanation:
Divide km buy hours
Answer: 7.377 Km/h
Explanation:
What you want to do is 45 divided by 6.1. And you will get your answer.
Select the correct answer.
What happens to the acceleration of an object if the net force on it increases?
ОА. .
The acceleration increases.
OB.
The acceleration decreases.
Ос.
The acceleration becomes zero.
OD
The acceleration remains the same.
Answer:
A
Explanation:
According to Newton's second law, acceleration is directly proportional to the net force. As the acceleration increases (when mass is constant), the net force increases. This is represented in the following formula.
[tex]f = ma[/tex]
[tex]a = \frac{f}{m} [/tex]
a = acceleration
f = force
m = mass
In a summer storm, the wind is blowing at a velocity of 8 m/s north. Suddenly in 3 seconds, the winds velocity is 23 m/s north. What is the winds acceleration?
Answer:a=v-u/t
=23-8/3
=5m/s hope you got your answer
Explanation:
The focal length of a converging lens is the distance.
The distance from the lens to the focal point is called the focal length.
What is a converging lens?Converging lenses, commonly referred to as convex lenses, have thicker centers and narrower upper and lower margins. The edges are outwardly curled. This lens has the ability to concentrate a beam of parallel light rays coming from the outside onto a spot on the opposite side of the lens. Convex lenses come in three different varieties, each with a unique structure.Convex mirrors are used in a car's side wing mirrors and rearview mirrors. This is so that the driver can see a wider area than the average person because of the distorted image that is created. aids the driver in keeping a closer eye on the road and vehicles in the back.Due to the greater field of view, it provides than usual, it is also utilized in driving mirrors and store security mirrors. Using blind corner mirrors to see around blind corners on the road is advantageous. By being able to see the traffic around tight turns, it improves road safety.To learn more about converging lens, refer to
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Question 1
Sue traveled 2.3 km on her bike and it took her 5.78 minutes go bike that distance.
What was her velocity in units of km/min ?
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.
!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,
see attached, thanks !
Answer:
B = Frictional force
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:
A scientist recorded the number of geese found in a park on various days of this week. The data is shown below.
14, 12, 19, 20, 21, 13, 18
What is the range of this data?
How will you determine the volume of a cuboid ? Write the formula you will use.
A 6m crowbar is used to lift 500 N load up to 4 m height hanging at one end of it by pressing
the bar with 400 N effort up to the depth of 6 m at the other end, then calculate
(1) Input work.
(ii) Output work, and
(ii) Efficiency of the machine
Answer:
Work = force • distance
so (input) 400 • 6 = 2400 joules.
and (output) 500 • 4 = 2000 joules
and efficiency = output energy ÷ input energy
so 2000 ÷ 2400 = 83%
input energy = 2400 joules
output energy = 2000 joules
efficiency = 83%