A pendulum is in a spacecraft to measure
acceleration during lift off. Before the launch, its period
is 6.5 X 10-3 s. At a point during lift off, its period is 3.1
X 10-3 s. What is the acceleration at this point?
Answer:
For small angles (✓ < 30 degrees), the period of a simple pendulum4can be approximated by: 3A radian is an angle measure based upon the circumference of a circle C =2⇡r where r is the radius of the circle. A complete circle (360 ) is said to have 2⇡ radians. Therefore, a 1/4 circle (90 )is⇡/2 radians.
Explanation:
Which of the following is commonly used to measure distances in space?
Kilometers
The speed of light
Megameters
The speed of sound
Answer:
Light years or the speed of light
Explanation:
Answer:
speed of light
Explanation:
what equation can be used to calculate either wavelength, frequency or speed?
Answer:
speed = wavelength * frequency
Explanation:
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A ball falling has both potential energy and kinetic energy. Where do you think it has the most potential energy and where do you think it has the more kinetic energy?
Answer:
it has most potential at highest point (not in space), But kinetic at lowest
Answer: When the ball is highest in the air it has the most potential energy and it has the most kinetic energy when it is about to hit the ground thats when it is moving fastest.
What is the gamma factor for an object moving at 0.5c?
A. 0.866
B. 0.707
C. 1.15
D. 1.41
Answer:1.15
Explanation:
Answer:
C. 1.15
Explanation:
We can calculate the gamma factor for an object moving at 0.5c, using the formula:
γ = 1/√(1 - v^2/c^2)
--------
where v is the velocity of the object and c is the speed of light.
Substituting v = 0.5c, we get:
γ = 1/√(1 - 0.5^2) = 1/√(1 - 0.25) = 1/√0.75 ≈ 1.155
--------
Therefore, the gamma factor for an object moving at 0.5c is approximately 1.155.
Which of these statements partly define law?
A) Is about how something behaves in the natural world
B) is a possible answer to a scientific question based on research
C) is a widely excepted explanation that combine several hypothesis
D) involves asking a question and performing investigation
Answer:
D
Explanation:
im guessing here i hope it is correct and good luck
The duration between the emission of the sound from the echo reception is: t - 1.5 s. the distance between the observer and the sound receiver knowing that the speed of sound in the air is worth
V - 340 m/s is:
Answer:
. tt tt t t t t t t tt t tt t t jk j k j k j k j k jk k j k jk
The weight of a football player is 680 N. What is his mass? g = 9.8 m/s2
Answer:
69.39 kgExplanation:
The mass of the football player can be found by using the formula
[tex]m = \frac{w}{a} \\ [/tex]
w is the weight
a is the acceleration due to gravity
From the question we have
[tex]m = \frac{680}{9.8} \\ = 69.38775...[/tex]
We have the final answer as
69.39 kgHope this helps you
Answer:
(a) What is her weight on earth? (b) What are her mass and her weight on the moon, where g = 1.62 ms–2? Solution: (a) On earth. W = m g = 55.0 x 9.8 = 539 N.
Explanation:
im not sure
hii can someone please help me with this thank u
Answer:
1. :uniformly accelerated motion
2. .0m/s
1. ( b ) ==》 uniform motion
_____________________
2. ( a ) ==》 0 m/s
a pennyfarthing is a style of a bicycle with a very large front wheel and a small real wheel, the cyclist who sit high above and behind the front wheel pedals this wheel directly the distance the pedals are turned input distance in one rotation is about 0.64 m. if the mechanical advantage of the pennyfarthing is 0.16 how far does the large wheel turn in one rotation.
Answer:
In one rotation, the large wheel turns 4m.
Explanation:
The given values are:
Input distance,
= 0.64 m
Mechanical advantage,
= 0.16
As we know,
⇒ [tex]Out. \ Distance = \frac{Inp. \ distance}{Mechanical \ advantage}[/tex]
On putting the values, we get
⇒ [tex]=\frac{0.64}{0.16}[/tex]
⇒ [tex]=4 \ m[/tex]
Two numbers are in the ratio 8 : 5. If 6 is added to each number, the ratio becomes
3:2.
Let the numbers be 8x and 5x
ATQ,
= 8x + 6/5x + 6 = 3/2
= 2(8x + 6) = 3(5x + 6)
= 16x + 12 = 15x + 18
= 16x - 15x = 18 - 12
= x = 6
Now, the numbers are:
8x = 8 × 6 = 485x = 5 × 6 = 30The sound wave passes from the sea-water into the air. State what happens to; the speed of the waves
The speed of sound wave in water is much more greater than its speed in air, so when the sound wave passes from sea water to air, then it's speed decreases.
Si la rapidez lineal de un móvil que se desplaza con MCU se triplica y el radio se mantiene constante, entonces la fuerza centrípeta:
Answer:
F' = 9 F
Explanation:
The question says that, "If the linear speed of a mobile moving with MCU is tripled and the radius remains constant, then the centripetal force:"
The formula for the centripetal force is given by :
[tex]F=\dfrac{mv^2}r{}[/tex]
Where
m is the mass of the object
v is the velocity
r is the radius of path
If the linear speed us tripled, v' = 2v, r = constant, then the new centripetal force is given by :
[tex]F'=\dfrac{mv'^2}r{}\\\\F'=\dfrac{m(3v)^2}{r}\\\\=\dfrac{mv^2}{r}\times 9\\\\F'=9F[/tex]
So, the new force becomes 9 times of the initial force.
This object is located 13.0 cm to the left of the lens and the image forms at 20.8 cm to the right of the lens.
What is the focal length of the lens?
Answer:
0.125 cm
Explanation:
1/f = 1/d¡ + 1/d。
Find the focal point
(13.0^-1 + 20.8^-1) = 0.125 m
Focal point = 0.125 m
The object placed in front of mirror forms an image on the opposite side of the mirror. The focal length of the lens is 0.125 m.
What is focal length?Focal length is the distance between the lens and the image sensor when the object is in focus.
The focal length can be find out by using lens maker formula.
1/f = 1/d¡ + 1/d。
1 / 13.0 + 1 / 20.8
f = 0.125 m
Thus, the focal length of the lens is 0.125 m.
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Describe the movement of molecules in an ice cube at the temperatures shown, and indicate whether the ice cube will change state.
Answer: The ice molecules expand and become stuck since the water is frozen and start to vibrate
Explanation:
According to the concept of thermal energy, as the temperature rises thermal energy increases and molecules start vibrating faster and ice changes it's state to water that is from solid to liquid.
What is thermal energy?Thermal energy is defined as a type of energy which is contained within a system and is responsible for rise in temperature.Heat is a type of thermal energy.It is concerned with the first law of thermodynamics.
Thermal energy arises from friction and drag.It includes the internal energy or enthalpy of a body of matter and radiation.It is related to internal energy and heat .It arises when a substance containing molecules or atoms are vibrating faster.
These vibrating molecules and atoms collide and as a result of which heat is generated in a substance , more the number of collision of particles , higher is the thermal energy.
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why is water not suitable for hydraulic machine
Answer:
Hydraulic fluid has a higher boiling point than water to help combat this. Related to this is the concept of vapor pressure. Hydraulic systems often involve small orifices, which can cause cavitation (localized boiling). Water will also exacerbate galvanic corrosion when dissimilar metals are used in the system.
How do you think organisms capture and store energy? How do you think organisms use and release this energy?
what type of galaxy Andromeda is??
Answer:
a spiral
Explanation:
It's the largest member of the Local Group of galaxies
Answer:
Barred spiral galaxy
What form of energy is stored in food? A. Heat. B. Light energy. C. Energy of motion. And D. Energy in molecules
It is Chemical Energy, actually
Is bio, chem, or physics better?
You step onto a hot beach with your bare feet. A generated in your foot, travels through your nervous system at an average speed of 127 m/s. How much time does it take for the impulse, which travels a distance of 1.58m to reach your brain?
Answer: 12.44 millisecond
Explanation:
Based on the information given, to know the time taken for the impulse, which travels a distance of 1.58m to reach the brain will be:
Time taken = Distance/Speed
Time taken = 1.58/127
Time taken = 0.01244
Time taken = 12.44 millisecond.
How can the negative charge be moved in order to cause both charges to have the same change in electric potential energy?
O It can be moved 0.04 m toward the positive plate.
O It can be moved 0.04 m toward the negative plate.
O It can be moved 0.01 m toward the positive plate.
O It can be moved 0.01 m toward the negative plate.
To cause both charges to have the same change in electric potential energy, the negative charge should be moved towards the positive plate, as electric potential decreases in the direction of electric field lines. Therefore, the correct option is to move 0.04 m toward the positive plate.
What is electric potential energy?Electric potential energy is the energy an electric charge possesses due to its position relative to other electric charges in an electric field. The electric potential energy of a charge depends on its charge, the strength of the electric field, and the distance between the charges.
What is the negative and positive plate?Negative and positive plates are typically used to refer to the electrodes in a capacitor. A capacitor is an electronic component that stores electric charge and energy in an electric field. In a capacitor, the positive plate is typically connected to the positive terminal of a power supply, while the negative plate is connected to the negative terminal.
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What happens to the force of gravity between two masses if one mass is decreased?
A. It stays the same.
B.it fluctuates.
C. It increases.
D. It decreases.
Answer:
D. It decreases
Explanation:
Erosion and physical weathering is a ________________ force that affects land formation
Answer:
Any choices for the blank?
A large rock is motionless on a flat sidewalk. Which statement best explains why the rock remains motionless?
Answer:
There are no forces acting on the rock :)
Explanation:
There are no forces acting on the rock.
What is Newton's 1st law of motion ?
A body in motion will remains in motion and a body at rest remains at rest until any external force is applied on it.
Here, the rock remains on sidewalk as the weight is rock is balance by the reaction force acting by the sidewalk and there is no external force acting in parallel direction to the rock to have motion according to Newton's 1st law of motion.
Therefore, no forces acting on the rock.
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HOW TO DO THIS QUESTION PLEASE
answer
it's unreliable
Answer:
(a) It can be replenished as it is used.
Explanation:
A resource is "renewable" if using it does not diminish the supply. Solar power and wind power are supplied by the Sun. The use of solar power and/or wind power does not change the capacity of the sun to provide that power.
A renewable resource is one that can be replenished as it is used.
_____
Additional comment
For all resources, there is a finite supply available on Earth. The sun supplies about 1 kW per square meter. Using some of that for human purposes changes the amount or form available for other purposes—photosynthesis, weather, ocean currents, reflection back to space, and so on. Within the time scale of human existence, the supply is essentially non-diminishing. With large-scale use, planet-wide effects can be expected.
What do scientists know about the future of the universe?
what dark matter is made of
why the expansion of the universe is accelerating
that stars will eventually burn out causing the universe to become cold and dark
that galaxies spin much slower than they should based on visible matter
Answer:
Gravity will cause a closed universe to collapse back on itself ending in the Big Crunch. scientific predictions about the future of the universe are based on the idea that the effect of gravity on matter determines the shape of the universe which then determines its future
Scientists know about the future of the universe and that stars will eventually burn out causing the universe to become cold and dark. Therefore, option C is correct.
What is the future of the universe?All of the stars and galaxies will ultimately run out of energy as the universe expands, and the universe will cool down, resulting in the "Big Chill." It will take an indefinite amount of time for gravity to stop the universe's expansion if its density is equal to the critical density.
There won't be any other galaxies visible outside of our own. The universe will then actually become cold, dark, and empty once the stars have burned out.
Scientists know about the future of the universe and that stars will eventually burn out causing the universe to become cold and dark. Therefore, option C is correct.
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Who and when was mechanical energy discovered? help me please!
Answer:
Explanation:
Thomas Young (1773 − 1829) first introduced the word “energy” to the field of physics in 1800, but the word did not gain popularity. Thomas Young later established the wave nature of light through interference experiments.
Answer:
June 1849 - James Prescott Joule
Explanation:
James Joule is the physicist who discovered the relationship between the loss of mechanical energy and the gain of heat. If an object contains mechanical energy, then it has the ability to do work.
You have a 100 ohm resistor. How
much resistance must you add in
parallel to the 100 ohm resistor to
create an equivalent resistance of
75.0 ohms?
Answer:
300 ohm
Explanation:
Trust me
20 points and brainlist!!!
Write about a situation where it might be more useful to describe motion using velocity instead of speed.
Answer:
If you are going someplace, you might want to tell which way you were going and how fast for traffic.
Explanation: