A pendulum has a mass of 0.060 kg swinging at a small angle from a light string, with a period of 1.4 s. What is the length of the pendulum?
Answers
Answer:
0.5 m
Explanation:
From the question given above, the following data were obtained:
Mass (m) = 0.060 kg
Period (T) = 1.4 s
Lenght (L) =?
NOTE:
1. Acceleration due to gravity (g) = 10 m/s²
2. Pi (π) = 3.14
The length of the pendulum can be obtained as follow:
T = 2π√(L/g)
1.4 = 2 × 3.14 × √(L/10)
1.4 = 6.28 × √(L/10)
Divide both side by 6.28
1.4 / 6.28 = √(L/10)
Take the square of both side
(1.4 / 6.28)² = L/10
Cross multiply
L = 10 × (1.4 / 6.28)²
L = 0.5 m
Therefore, the length of the pendulum is 0.5 m
Answer:0.49
Explanation:
Khan academy
Related Questions
when is the object at rest? in constant speed? accelerating?
Answers
Answer:
Answered in explanaion.
Explanation:
REST: When an object does not change its position with respect to its frame of reference or surrounding, then the object is said to be in the state of rest.
CONSTANT SPEED: When the object covers equal distance in equal intervals of time, the object is said to be moving with constant speed.
ACCELERATING: An object is said to be accelerating when the speed of the object increases with respect to time.
Kelly sits on a rock in a field. Which of the following examples correctly name force pairs? Select all that apply.
А
Kelly pushes on the rock, and the rock pushes on Earth.
B
Earth pulls on Kelly, and Kelly pulls on Earth.
с
The rock pushes on Earth, and Earth pulls on the rock
D
Kelly pushes on the rock, and the rock pushes on Kelly.
Answers
Answer:
A
Explanation:
If a riding lawnmower engine exerts 19 hp in one minute to move the mower, how much work is done? (Hint convert: 1 watt equals 0.00135962 hp)
Answers
Answer:
Work done = 838470 Joules.
Explanation:
Given the following data;
Power = 19 hp
Time = 1 minute to seconds = 60 seconds.
Next, we would convert the unit of power in "hp" to "Watt."
1 Watt = 0.00135962 horsepower
x Watt = 19 horsepower
Cross-multiplying, we have;
19 = 0.00135962x
x = 19/0.00135962
x = 13974.5 Watts.
Now, to find the work done in moving the mower;
Work done = power * time
Substituting into the formula, we have;
Work done = 13974.5 * 60
Work done = 838470 Joules.
Which of the following best describes why tidal energy is considerd a renewable resorce?
Answers
Answer:
It is green. Aside from being renewable, tidal energy is also an environmentally friendly energy source because it does not take up a lot of space and does not emit any greenhouse gases.
Explanation:
2. You are stirring some soup on the stove and you notice that the metal spoon is getting hot.
What type of heat transfer?
Answers
Conduction is the process by which heat energy is transmitted through collisions between neighboring atoms or molecules.
A marble is thrown horizontally with a speed of 15.0 m/s from the top of a building. When it strikes the ground, the marble has a velocity that makes an angle of 65.0° with the horizontal. From what height above the ground the marble was thrown. How far from the base of the building, did the marble land?
Answers
I used this formula to get the formula for Vy:
v^2=vi^2+2(a)(x)
And got
Vy=square root (19.6 h)
Then I used that and put it in this formula:
tan(65) =Vy/Vx
tan(65) = square root (19.6 h)/15.0
Then I rearranged it to:
h=[(15.0)(tan65)]/19.6
h=52.79 m
A measure of the body's resting energy expenditure based on data that is collected four hours after eating or physical activity is called the _________?
Answers
What is the formula of the compound formed when Beryllium reacts with the sulfate ion?
A. Be(S)2
B. Bes
C. Bez(SO4)2
D. BeSO4
Answers
Answer:
the formula of the compound formed when Beryllium reacts with the sulfate ion is BeSO4
Explanation:
Nuclear energy is released during____.
SELECT ALL THAT
1. Chemical reactions
2. Fission
3. Radioactive decay
4. Breakup of molecular bonds
5. Induced splitting of atoms
Answers
Answer: fission and radioactive decay
And induced splitting of atoms
Explanation:
a 2kg book falls off the top of a 2.3m bookshelf. how much work is required to lift the book back to it's original position? gravity acceleration is 9.58 m/s ²
Answers
Answer:
44.068 J
Explanation:
From the question,
Work(W) = mgh............... Equation 1
Where m = mass of the book, g = acceleraton due to gravity, h = height.
Given: m = 2 kg, h = 2.3 m, g = 9.58 m/s²
Substitute these values into equation 1
W = 2×2.3×9.58
W = 44.068 J
Hence the work required to lift the book is 44.068 J
How does monkeys make babys?
Answers
what’s the equation for this
Answers
A non -viscous incompressible fluid is pumped steadily into the narrow end of a long tapered pipe and emerges from the wide end . The pressure at the input is greater than at the output . A possible explanation is :
Answers
Answer:
v₂ =[tex]( \frac{r_1}{r_2})^2 \ v_1[/tex]
Explanation:
This phenomenon is explained by the continuity equation in fluids
v₁A₁ = v₂A₂
where the subscript 1 is for the input narrow part and the subscript 2 for the wide part
v₂ = [tex]\frac{A_1}{A_2} v_1[/tex]
consider the cross section at each point
A₁ = π r₁²
A₂ = π r₂²
we substitute
v₂ =[tex]( \frac{r_1}{r_2})^2 \ v_1[/tex]
therefore the exit velocity is less than the entrance velocity of the fluid.
We can also analyze the situation using Bernoulli's equation
P₁ + ρ g v₁² + ρ g y₁ = P₂ + ρ g v₂² + ρ g y²
if we assume a horizontal system y₁ = y₂
P₁-P₂ = ρ g (v₂² - v₁²)
A toy cart with a weight of 10N moves with a constant velocity of 2 m/s to the right on a horizontal table. According to Newton's Laws of Motion, which of the following statements is correct?
a
The table exerts a force of 10N upward on the toy cart.
b
The toy cart exerts a force of 10N upward on the toy table.
c
The toy cart exerts a force of 2N downward on the table.
d
The toy cart exerts a force of 2N to the right on the table.
Answers
Answer:
Its A ik cuz i just studied it when i was answering this question...
Explanation:
have a good day!
Silver, copper and
iron wires of equal
dimensions are
connected in parallel
in the circuit. Which
wire has the
strongest
electric
current?
Please I need your help
Answers
Answer:
the answer would be strongest because just took this question
Explanation:
You travel 200 m in 120minutes. What is your speed in miles per hour?
Answers
Answer:
100
Explanation:
60 minutes is an hour and there are 120 minutes so there are 2 hours. You divide 200 m by 2 and you get 100.
what is lateral shift
Answers
Answer:
Lateral Shift When a ray of light is incident on a glass slab, the emergent ray coming out of the slab will be parallel to the incident ray. The perpendicular distance between the direction of incident ray and emergent ray is called the lateral Shift. It is denoted by d.
Explanation:
Hope this helped :)
What causes the apparent colors of the objects we see?
Answers
Answer: The human eye and brain transform light into color. Allowing us to see them.
Explanation: Light receptors within the eye turn light into color. The color that is reflected off of an object, is what we see. Hope this helps.
The apparent colors of the objects we see causes due to reflection of the light which they absorb and emit.
What is reflection?Reflection is the change in direction of a wavefront which occurs at an interface present between the two different media so that the wavefront of the wave returns into the medium from which it has been originated. Common examples of reflection include the reflection of light, sound wave and water waves.
The color of an object is the wavelengths of light waves that it reflects. The reflection is determined by the arrangement of electrons in the atoms of that substance which will absorb and re-emit photons of particular energy levels according to the quantum laws.
Learn more about Reflection here:
https://brainly.com/question/30270479
#SPJ6
What is the mass of an object travelling at 25 m/s with a kinetic energy of 3775 J?
Answers
Answer:
You can do 6516-3775=2741The difference is 27141 kilometersDid this help?⇒ Yes or No?which element has 5 valence electrons and 4 shells
Answers
Answer:
Arsenic
Explanation:
Arsenic is in group 5 and period 4. Group numbers tell us the number of valence electron and period number tells us the number of shells in an element.
Which items would have this energy transformation: chemical energy -> mechanical energy?
Answers
Answer:
La transformación energética, transformación de la energía, conversión energética o conversión de la energía es el proceso de cambiar la energía de un tipo de energía a otro. En física, la energía es una cantidad que proporciona la capacidad de realizar un trabajo (por ejemplo, levantar un objeto) o proporciona calor. Además de ser convertible, de acuerdo con la ley de conservación de la energía, la energía es transferible a una ubicación u objeto diferente, pero no se puede crear ni destruir.
La energía en muchas de sus formas se puede utilizar en procesos naturales o para proporcionar algún servicio a la sociedad, como calefacción, refrigeración, iluminación o realizar trabajos mecánicos para operar máquinas. Por ejemplo, para calentar una casa, el horno quema combustible, cuya energía potencial química se convierte en energía térmica, que luego se transfiere al aire de la casa para elevar su temperatura.
Explanation:
What line in the sky is created by our revolution around the Sun?
Answers
Answer:
Ecliptic
Explanation:
You asked for the term that is used to describe Earth going around the sun
The ecliptic is the path the sun, moon, and planets take across the sky as seen from Earth. It best defines the plane of the Earth's orbit around the sun. The imaginary line can best be visualized in the days just before full moon.
Hope it helped
Juan is receiving bills from the hospital even though his insurance company said his procedure would be covered in full. What strategies can help him work successfully with his insurance company and the hospital?
Be stern and raise your voice during calls, and ask for a printed summary of each conversation
Jot down notes before and after making each call, and avoid calling during business hours when people are busy
Save all emails and bills, and follow up to make sure people did what they said they would do
Trust that others will follow through with what was agreed upon, and wait for others to call you
Answers
==> Jot down notes before and after making each call, and avoid calling during business hours when people are busy.
==> Save all emails and bills, and follow up to make sure people did what they said they would do.
A car is driving along a road at a speed of 50 km/hr. How far will the car travel in 5 hours?
Answers
Answer:
I think it's 250
Explanation:
If the car is traveling 50 km/hr that means every hour, the car drives 50 km. So if you want to know how far it will go in 5 hours you do 50x5.
What confirms that the process of seafloor spreading is occurring?
Answers
The mountain ranges in the middle of the oceans
Sea floor spreading
The process by which new, oceanic crust forms along a mid ocean ridge and older crust moves away from the ridge. :)
What types of energy transformations take place when a balloon lights a light bulb?
Answers
6. Ella holds an ice cream cone in her hand. She soon notices that her hand begins
to feel cold. What is different about the particles that make up her hand?
A They are getting larger.
B They are gaining average energy.
C They are moving slower on average.
D They are joining together.
Answers
Answer:
C
Explanation:
the ice cream is transferring the coldness into her hand and slowing down the particles. hot means they move faster, cold is to slow down
Which type of force is the weakest?
A. Van der Waals forces
B. Hydrogen bonds
C. Metallic bonds
D. lonic bonds
Answers
Answer:
D
Explanation:
I think those are weakest
Answer:
D. ionic bonds
Explanation:
ionic bonds are the weakest as its between ions
hydrogen bonds are stronger as it is electrostatic force so its strong
metallic bonds are the sharing of many detached electrons between many positive ions they call it a glue because they are hardly breakable
2. Grace drives her car 40 km in 75 minutes. What is her average speed in
kilometers per hour?
Answers
Answer:
k
Explanation:
k
HERES THE ANSWER AND QUESTION
Check all that are solutions of the inequality.
-1.2
0
-1.4
Negative 1 and one-third
-1.25
-1
THE ANSWER IS A,B,F
Answers
Answer:
agree
Explanation:
Answer:
THE ANSWER IS A,B,F
Explanation: