In celestial mechanics, escape velocity or escape speed is the minimum speed needed for a free, non-propelled object to escape from the gravitational influence of a primary body, thus reaching an infinite distance from it.
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The largest identified asteroid is Ceres and is about three times the size of the Moon.
True
or
False
[tex]false[/tex]
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Activity 5: My FB (Faulty Block)
Directions: Given the illustration of the fault blocks below, draw how it looks like
after acted upon by stress forces. Draw the direction of forces acting on each type
of stress force in the fault blocks and identify the type of stress acting on the
block.
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How does the sun's energy help maintain Earth's energy budget? (3 points)
A part of it is trapped by carbon dioxide and methane.
A part of it heats up Earth's land and water equally.
All of it is turned back towards space.
All of it is trapped by the clouds.
A bullet is shot vertically upward with an initial velocity of 128 ft/s. The bullet's height after t seconds is y(t) = 128t - 16t2. What is the height of the bullet at the time the velocity is 0 ft/s?
The height of the bullet when the velocity is zero is 256 ft.
Height of the bullet when the velocity is zeroThe height of the bullet when the velocity is zero is determined by taking derivative of the function as shown below;
[tex]v = \frac{dy}{dt} = 128 -32t \\\\when \ v \ is \ zero\\\\v = 0\\\\128 - 32t = 0\\\\32t = 128\\\\t = \frac{128}{32} \\\\t = 4 \ s[/tex]
The height of the bullet at this time is calculated as follows;
[tex]y(4) = 128(4) - 16(4)^2\\\\y(4) = 256 \ ft[/tex]
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Which of the following shows the correct order of a life cycle for an animal?
Egg → Adolescent → Infant → Adult → Embryo
Egg → Embryo → Infant → Adolescent → Adult
Embryo → Egg → Infant → Adult → Adolescent
Infant → Adolescent → Adult → Embryo → Egg
Answer:
Egg, Embryo, infant, adolescent and adult
Answer:
egg,embryo,infant,adolesent,adlt /B
Explanation:
A ray of light bends upon entering a new medium. What is the phenomenon called?
Explanation:
refraction is the change in direction of a wave passing from one medium to another or from a gradual change in the medium.
One day, the distance between the crests of the waves at sea is 2.5m. The shortest time between the lowest and highest positions of the floating boat was 0.625 seconds.
a) Calculate the wave period.
b) Calculate the speed of the wave.
Answer:
1.25 sec, 2 m/s
Explanation:
Period = 2 * 0.625 sec = 1.25 sec
speed = 2.5/1.25 = 2 m/s
What does acid rain look like so that anyone can recognize it?
Why is it incorrect to say that astronauts are weightlesS in space while orbiting Earth in a space shuttle?
This is because Gravity exists everywhere in the universe.
What is Gravity?This is the force of attraction which acts on all matters in the universe. Astronauts appear weightless while in orbiting the Earth because the space shuttle and the astronauts are in free fall around it.
They fall at the same rate as the space shuttle which is why the astronauts appear weightless.
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Astronauts and their spaceship are affected by Earth's gravity in space. Even though Earth's gravitational influence is weaker in orbit than on Earth's surface, they have weight. They don't feel their weight since nothing's pushing back.
What is weightlessness in space?Weightlessness means no weight. It's also called zero-G. Weight is the force on a stationary object in a strong gravitational field.
The sensation of weightlessness that astronauts on board the International Space Station enjoy is due to the fact that they are free falling toward the planet Earth. Because the space station and the astronauts are moving at the same rate, there is no external normal force acting upon the body in free fall to balance out the effects of the body's own weight (equal to g).
Therefore, the astronauts and their spaceship continue to have mass and are still affected by the gravitational pull of the Earth.
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What is the Story of Issac Newton
Answer:
Isaac Newton is considered one of the most important scientists in history. ... During his lifetime Newton developed the theory of gravity, the laws of motion (which became the basis for physics), a new type of mathematics called calculus. The legend is that Newton discovered Gravity when he saw a falling apple while thinking about the forces of nature. Whatever really happened, Newton realized that some force must be acting on falling objects like apples because otherwise they would not start moving from rest.
What is the velocity (in metres per second) of a Canadian
Forces CF-18 fighter jet that travels 8.864 km [S] in
0.297 min?
Answer:
497 m/s
Explanation:
(8.864 x 10^3 m)/(0.297 * 60 sec) = 497 m/s
The velocity (in metres per second) of a Canadian Forces CF-18 fighter jet would be 497.41 meters/second.
What is speed?The total distance covered by any object per unit of time is known as speed.
As given in the problem we have to find out the velocity (in meters per second) of a Canadian Forces CF-18 fighter jet that travels 8.864 kilometers [S] in 0.297 minutes,
The distance traveled by the CF-18 fighter jet = 8.864 kilometers
1 kilometer = 1000 meters
8.864 kilometers = 8.864× 1000 meters
=8864 meters
The time taken by CF-18 fighter jet = 0.297 minutes
1 minute = 60 seconds
0.297 minutes = 0.297 ×60 seconds
=17.82 seconds
The velocity of the CF-18 fighter jet =8864 meters/17.82 seconds
= 497.41 meters/second
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List any two reasons for shifting to alternate energy resources?
Answer:
because non renewables resources are ending day by day ,
alternative energy resources are renewables so it can reduce the load of using non renewables,etc
Explanation:
hope this will help you!
A copper wire has a diameter of 1.947 mm. What magnitude current flows when the drift velocity is 1.79 mm/s
Answer:
72.5 A
Explanation:
There are about 13.6 coulombs of free electron charges in each cubic mm of copper. So, the rate of movement of charge is that quantity multiplied by the volume in the flow.
V = πr²h . . . . . volume of a cylinder
V = π(1.947 mm/2)²(1.79 mm/s) = 5.329 mm³/s
Then the charge flow rate is ...
(13.6 C/mm³)(5.329 mm³/s) = 72.5 C/s
The magnitude of the current is about 72.5 amperes.
______
Additional comment
The volume of free charge in copper can be computed from the density, molar mass, number of atoms in a mole, number of charges in a coulomb, and the number of free charges per atom. Some of the combinations of necessary calculations can be found with a web search, so it is not unreasonable to presume that the charge density is known.
A ball is placed at the top of a hill then released. After 5 seconds it has a speed of 20 m/s. What is the average acceleration of the ball
Answer:2
Explanation:When the ball is released from the top of the hill then it's initial velocity (u)=0 And it's final velocity will be after 5 second (v)=2.
Answer:
Explanation:
a ball is placed at the top of the hill and then released after five seconds and has a speed of 20 m/s. What is the average acceleration of the ball?
A heat engine is used to convert heat into which of the following?
Answer:
work
Explanation:
a
the speed, (u) of a car after a time (H is given by
v=utat
Where u is the initial speed and a is the acceleration
S,
Re-arrange the equation to make
a the subject of formala.
-
Answer:
[tex]a = \frac{v - u}{t} [/tex]
Explanation:
[tex]v = u + at[/tex]
[tex]v - u = at[/tex]
[tex] \frac{v - u}{t} = \frac{at}{t} [/tex]
[tex]a = \frac{v - u}{t} [/tex]
how has globalization led to underdeveloped countries?
Answer: Economic growth is the main channel. Globalization can affect poverty. when countries open up to trade, they tend to grow faster and living standards do tend to increase.
Explanation: I hope this helps :)
what would the mass be of an object that was moving at a velocity of 35 m/s and has a kinetic energy of 500j be?
Answer:
0.816 kg
Explanation:
[tex]E_k=\frac{1}{2}mv^{2}\\[/tex]
so [tex]m=\frac{2E_k}{v^2}=\frac{2\times500}{35^2}=0.816 kg[/tex]
Is black made of all colors?
Black is not a color, but rather a shade. In color theory, a shade is a pure color mixed with black. It decreases its lightness while nearly conserving its chromaticity. Strictly speaking, a "shade of black" is always a pure black itself and a "tint of black" would be a neutral gray. Unlike these, many off-black colors possess a hue and a colorfulness (also called saturation).
Attached is an image showing a few of the different shades of black.
Hope this helps! Brainliest would be much appreciated! Have a great day! :)
The answer is "no" because black is not made of all colors, in fact black is not a color, but black is the absence of light.
What is Light?Light is an electromagnetic radiation which can be recognized by the human eye. Electromagnetic radiation occurs at a wide variety of wavelengths, from cosmic rays with wavelengths smaller than around 1 1011 meters to radio waves estimated in meters.
Within that large spectrum, the colors visible to humans comprise a relatively small band, ranging from around 700 nanometers for red light to roughly 400 nm for violet light. The spectral areas close to the visible band are also referred to as light, with infrared at one side and ultraviolet the other.
The absence or full assimilation of visible light produces the color black. It is an anamorphic lens color with no tint, similar to white and gray. It is frequently used symbolically or colloquially to denote darkness.
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which is the correct standard notation for 9.3x10^5
Explanation:
9.3x105
Simplifies to:
9.3x100000
=9.3x100000
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A 0.001 kg nail is placed 0.2m away from 0.1 kg hammer. Calculate the gravitational force on the nail from the hammer.
Answer:
F= 1.67 x [tex]10^{-13}[/tex]N
Explanation:
I used this equation:
F = GMm/R²
Where M is mass 1
where m is mass 2
where R is distance
where F is gravitational force
In a pulley system, two blocks are connected by a rope as shown below. The coefficient of static friction between block A and the surface is 0.8. Block A has a mass of 20kg. What is the minimum mass that block B can have so that block A moves?
Hi there!
We can begin by doing a summation of forces for each block.
Block A:
This block has the force of tension (in direction of acceleration +) and static friction (opposite direction -) acting on it. Thus:
[tex]\Sigma F_A = T - F_s\\\\m_Aa = T - \mu m_Ag[/tex]
Block B:
This block has the force of tension (opposite of acc. -) and gravity (in direction of acc +), working on it.
[tex]\Sigma F_B = m_Bg - T\\\\ m_Ba = m_Bg - T[/tex]
Add both of the expressions and solve for the maximum mass of Block B.
[tex]\Sigma F = m_Bg - T + T - \mu m_Ag\\\\a(m_A + m_B) = m_Bg - \mu m_Ag[/tex]
To find the minimum value, we can set a = 0, so:
[tex]0 = m_Bg - \mu m_Ag\\\\\mu m_Ag = m_B g\\\\0.8(20)(9.8) = m_B (9.8)\\\\m_B = \frac{0.8(20)(9.8)}{9.8)} = \boxed{16 kg}[/tex]
The block must weigh > 16 kg for block A to move.
Find the charge on capacitor, C2 , in the diagram below if V_ab=24.0 volts,〖 C〗_1=6.00 μF,〖 C〗_2= 3.00 μF,and C_3=10.0 μF.
The charge on the capacitor 2 (C₂) is 48μF.
Analysis of the circuit diagramIn the circuit diagram, C₁ and C₂ are in series connection, while C₃ is parallel to C₁ and C₂.
Same charge flows in a series arrangement (charge on C₁ = charge on C₂).Same voltage flows in a parallel arrangement (voltage on C₁, C₂ = voltage on C₃).Charge on capacitor C₁ and C₂[tex]Q_1 = Q_2 = Q\\\\V = \frac{Q}{C_1} + \frac{Q}{C_2} \\\\V = Q(\frac{1}{C_1}+ \frac{1}{C_2} )\\\\V = Q(\frac{C_2 + C_1}{C_1 C_2} )\\\\Q = V(\frac{C_1 C_2}{C_2+ C_1} )\\\\Q = 24 \times (\frac{6\times 10^{-6} \times 3 \times 10^{-6}}{6\times 10^{-6} \ + \ 3\times 10^{-6}} )\\\\Q = \frac{4.32 \times 10^{-10}}{9\times 10^{-6}} \\\\Q = 4.8\times 10^{-5} \ C\\\\Q = 48 \ \mu C[/tex]
Thus, the charge on the capacitor 2 (C₂) is 48μF.
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7 principles of Exercise and Sports Training
Answer: individuality, specificity, progression, overload, adaptation, recovery, and reversibility.
Explanation:
individuality, specificity, progression, overload, adaptation, recovery, and reversibility.
Answer:
1. individuality
2. specificity
3. overload
4. adaptation
5. recovery
6. reversibility
7. progression
Explanation:
I learned this last year.
Can a convex mirror form a real image?
Answer:
yes !
Explanation:
a mirror transforms and flips , but nonetheless produces a real image.
I am confused how to find the final velocity after the collision of the block?
Answer:
kmvmm x=0
l
V
V
0 = kmvm = x=0
Explanation:
list some of the electronic system?
Answer:
▪list some of the electronic system?
➢ An audio system, TV, or any Mp3 player is the example of an electronic system. The sound waves are converted to electrical signals and they are amplified to process the output of high strengthened audio signals, through speakers.
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A ball is thrown 125 meters upward and then falls the same distance back to Earth. Neglecting air resistance, its total time in the air is
Answer:
the ball is in the air for 10 seconds
Explanation:
let gravity = 10m/s/s
height = 1/2 acceleration • time^2
125 m = 1/2 • 10 m/s/s • time ^2
125m = 5 m/s/s • time^2
25s = time^2
5 s = time
5 seconds is the time required for half of the flight
time total = 2 • time
time total = 2 • 5s
time total = 10 s
A 1,200 kg car accelerates at 3 m/s2. What net force is the car experiencing during this
acceleration?
0 3600 N
0 2000 N
2400 N
O ON
Answer:
3600 N
Explanation:
F=ma
1200*3 = 3600
Brainliest if correct Question 5 of 10
Which two types of energy does a book have as it falls to the floor?
A. Kinetic energy
B. Potential energy
c. Nuclear energy
D. Magnetic energy
E. Light energy
SUBMIT
Answer:
A and B
Explanation:
Kinetic energy is when an object is in motion, and potential energy is kind of when an object stops being in motion, or there is a pause in motion for an extent of time.
When you are holding the book before dropping it, that book is at potential energy. When you drop the book, the book gains kinetic energy as it falls from your hands and hits the floor. Once it hits the floor and rests, it regains potential energy.
I hope that this helps.