Answer:
Explanation:
g means gravitation
G is universal gravitational constant
M = mass of the earth
R = radius of the earth
Hope this helps
plz mark as brainliets!!!!!!!!!
As pitch gets higher, wavelength gets ___________.
Answer:
Shorter
Explanation:
Waves become shorter and closer together as pitch increases
A 100-m long ski lift carries skiers from a station at the foot of a slope to a second
station 40 m above. What is the IMA of the lift?
40
Answer:
12
Explanation:
Explanation:
The ideal mechanical advantage of a slope is given by the ratio between the output load, which is simply the weight of the object (Fw), and the input force Fi applied to move the object along the slope:
ima= {Fw}÷{Fi},
The energy conservation law states that the potential energy of the object when it reaches the final height h is equal to the work done to move the object along the distance of the slope ll , i.e.
Fw h = Fi L
From this we find
{Fw}÷{Fi} = {L}÷{h}
Therefore, we can substitute this into the formula of the ideal mechanical advantage and calculate its value:
ima= {L}÷{h} = {100m}÷{40m}=2.5
A. B. C. D.
-___________
459 ft/sec --> mi/hr
Answer:
?
Explanation:
what im not understanding do u need help?
How is friction reduced between an air hockey puck and the table?
Cause it's Corona Time
Can someone help me please
Answer:
D
Explanation:
Because it is impossible for it to show the real depth of the ocean and how deep it is
Joe throws a ball straight down a 100 m building with a velocity of 5 m/s. How long does it take the ball to reach the ground?
why do athletes stretch before the game??? and hii pls help
Answer:
to stretch their muscles so they don't strain or hurt themselves
Explanation:
hi!
Answer:
it's kinda like a warm up. they're getting their body ready for extreme physical activity.
Explanation:
hope it helps, and hi
Why do we dream? What causes you to dream?
Answer:
you dream because
Explanation: you sleep
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If the solar system were used as a model of an atom, what would the Sun MOST likely represent?
an ion
a nucleus
a neutron
an electron
Answer:
a nucleus
Explanation:
ik.... ....... v
Einstein's theory of general relativity is currently the best explanation of
gravity. Why has this theory not been replaced with a new one?
O A. Scientists assume it is correct and therefore no longer perform
experiments on gravity.
O B. Because of Einstein's fame, it remains popular among scientists.
O C. The force of gravity has been shown to remain constant over time,
O D. It still explains the experimental evidence pertaining to gravity.
SUBMIT
Answer:
d
Explanation:
im pretty sure. just makes the best sense. If im wrong im very sorry.
Answer:
D
Explanation:
because its right
What often occurs at convergent tectonic plate boundaries?
A) mountain building
B) increasing air pressure
C) Thinning of the biosphere
D) Decreased erosion
Answer:
C
Explanation:
THINNING OF THE BIOSPHERE
4. Two scientists are experimenting with pure samples of isotope X, a highly radioactive substance. The first scientist has a sample with a mass of 20 grams. He
measures a half-life of 232 seconds. The second scientist has a sample of the same substance with a mass of 80 grams. What is the half-life that she is most likely
to measure?
A. 58 seconds
B.232 seconds
C.464 seconds
D. 928 seconds
Answer:
D
Explanation:
The substances are the exact same!
The half life should be the same too :)
A half life is how long it takes for a substance to break down and leave your system.
So for 20 grams, it goes away in 232 seconds, but for 80 grams, which is 4 times the amount, you would also multiply the half life by 4
I hope this is correct!
The half-life of the sample of isotope X of 80 grams is the same as that of the sample of 20 grams, that is, 232 seconds (option B).
To find the answer, we need to remember the definition of half-life.
The half-life ([tex]t_{1/2}[/tex]) of a radioactive substance is the time at which the initial amount of a substance (the number of disintegrations, mass, activity) decreases by half after it decays into another substance, due to the emission of radiation in the form of a particle (alpha, beta⁺, beta⁻) or energy (gamma-ray or X-ray).
Since the two scientists are experimenting with the same isotope X, the half-life of the sample is the same, regardless of its initial and final mass, so the half-life of the sample of 80 g is 232 seconds.
Therefore, the answer is option B (232 seconds).
Learn more about half-life here:
https://brainly.com/question/13234158?referrer=searchResults
https://brainly.com/question/7612438?referrer=searchResults
I hope it helps you!
A body has translatory motion if it moves along a
Which of the following is not used in calcu-
lating acceleration?
A) initial velocity C) time interval
B) average speed D) final velocity
-i need an answer asap please
Answer:
average speed is not used in calculating aaceleration.
PLEASE HELP URGENT!!!!!!!!!!!!!
c i think sorry if wrong
during which process does the space between particles tend to increase
Answer:evaporation or de-
vaporation i think
Frank has a paperclip. It has a mass of 12g and a volume of 3cm3. What is its density?
Answer:
D = 4 g/cm³
Explanation:
Density = Mass / Volume
Step 1: Define
D = x
M = 12 g
V = 3 cm³
Step 2: Substitute
D = 12g/3 cm³
Step 3: Simplify
D = 4g / cm³
what do pitch and loudness have in common?
Answer:
both are subject to a person's interpretation.
Answer:
it is a subject to a person's interpretation.
Explanation:
i hope this helps!
Click to review the online content. Then answer the question(s) below, using complete sentences. Scroll down to view additional
questions
Online Content: Site 1
Based on their location in the atmosphere, the layers are able to have their own special characteristics. For example, most weather
occurs in the troposphere. What occurs in each of the other layers? (Site 1)
99 % al 31-
BIUS X2 x?
N
Answer:
Explanation:
In the stratosphere the ozone layer absorbs and scatters the solar ultraviolet radiation. In the mesosphere meteors burn up. In the thermosphere aurora and satellites occur. In the ionosphere overlapping into the mesosphere and thermosphere occur.
Answer:
Thermospheric temperatures increase with altitude due to the absorption of highly energetic solar radiation. Radiation causes the atmosphere particles in this layer to become electrically charged, enabling radio waves to be refracted and thus be received beyond the horizon. This is how solar radiation can affect the thermosphere.
Explanation:
got a 100% on online content edge 2022
what are mechanical waves ?
Answer:
A mechanical wave is a wave that is an oscillation of matter and therefore, transfers energy through a medium... hope it helps!!“What is the relationship between wavelength and frequency?”
Answer:
They are inversely proportional. If the frequency goes up, the wavelength will go down
Explanation:
Answer:
Explanation:
What is the relationship between wavelength and frquency
If (x + 8) is a factor of f(x), which of the following must be true?
Both x = -8 and x = 8 are roots of f(x).
Neither x = -8 nor x = 8 is a root of f(x).
f(-8) = 0
Of(8) = 0
?
Answer:
c <3.
Explanation:
trust me :D
Answer:
f(–8) = 0
Explanation:
just took the quiz
An aeroplane moving horizontally with a speed of 200 m/s drops a food packet while flying at a height of 396.9 m. The time taken by the food packet to reach the ground and its horizontal range is ...
A.5 s and 1000 m
B.9 s and 1800 m
C.8 s and 1600 m
If mass A is 1.0 kg, mass B is 5.0 kg, and the frictional pulley has a mass of 0.5 kg and a radius of 0.15 m, what is the velocity of A and B at 0.5 seconds?
a. A = 1.72 m/s, B = 0.22 m/s
c. A = 0.22 m/s, B = 1.72 m/s
b. A = 3.14 m/s, B = -3.14 m/s
d. A = -3.14 m/s, B = 3.14 m/s
Answer:
b. A = 3.14 m/s, B = -3.14 m/s
Explanation:
Assuming this refers to an Atwood machine, draw free body diagrams for each mass.
For mass A, there are two forces: tension T₁ pulling up and weight m₁g pulling down.
For mass B, there are two forces: tension T₂ pulling up and weight m₂g pulling down.
For the pulley, there are two torques: tension T₁r pulling counterclockwise and tension T₂r pulling clockwise.
Sum of forces on A in the +y direction:
∑F = ma
T₁ − m₁g = m₁a
T₁ = m₁g + m₁a
Sum of forces on B in the -y direction:
∑F = ma
m₂g − T₂ = m₂a
T₂ = m₂g − m₂a
Sum of torques on the pulley in the clockwise direction:
∑τ = Iα
T₂r − T₁r = (½ mr²) (a/r)
T₂ − T₁ = ½ ma
Substitute:
m₂g − m₂a − (m₁g + m₁a) = ½ ma
m₂g − m₂a − m₁g − m₁a = ½ ma
m₂g − m₁g = m₂a + m₁a + ½ ma
g (m₂ − m₁) = a (m₂ + m₁ + ½ m)
a = g (m₂ − m₁) / (m₂ + m₁ + ½ m)
a = (9.8 m/s²) (5.0 kg − 1.0 kg) / (5.0 kg + 1.0 kg + ½ (0.5 kg))
a = 6.272 m/s²
Given:
v₀ = 0 m/s
a = 6.272 m/s²
t = 0.5 s
Find: v
v = at + v₀
v = (6.272 m/s²) (0.5 s) + 0 m/s
v = 3.14 m/s
Therefore, mass A will rise at 3.14 m/s, and mass B will fall at 3.14 m/s.
What stage of development was from birth to around 2
Answer:
Sensory and Motor development.
Explanation:
What are aerial plants
Answer:
Aerial plants are plants that lives in air or wind the wind serves as the water of the plants. Most aerial plants are found in tropical and equatorial regions of the world. In evergreen rain forests, the foliage is so thick that some plants have evolved aerial roots to allow them to absorb more sunlight. The development of aerial roots is
thus an evolutionary process.Aerial roots are often thick and spread around the parent tree. The Banyan tree can have several aerial roots as it gets older.
Explanation:
HOPE IT HELPS MARK AS BRAINLIEST
A ball is dropped from a height h and falls the last half of its distance in 4 seconds. How long does the ball fall? From what height is the ball originally dropped?
Answer:
How long does the ball fall is t_2 = 13.66 (s).
From what height is the ball originally dropped is h= 913.90 (m).
Explanation:
PLEASE HELP :/
george walks to a friend's house. he walks 750 meters north, then realizes he walked too far he turns and walks 250 meters south. the entire walk takes him 50 seconds whats his distance and displacement?
Distance = 750 + 250 = 1000
Displacement (shortest path)=750 - 250 = 500
That's it..
Hope it helps..According to the periodic table, how many electrons does gallium (#31) have in its valence level?
Answer:
Three valence electrons
