Answer:
Hubble has helped survey galaxies that existed when the universe was only 600 million years old. Previous estimates had suggested that galaxies didn't form until the universe was at least two billion years old. The instrument's images have helped scientists understand how galaxies evolve.
Explanation:
The volume of air is 53.28 m 3 . Convert it into scientific notation. 5.328×101 m3 532.8×101 m3 0.5328×103 m3 Both A and C
Explanation:
It is given that, the volume of air is 53.28 m³. We need to convert it into scientific notation.
Any number in scientific notation can be given by :
[tex]N=a\times 10^b[/tex]
a is real no and b is any integer
We have, V = 53.28 m³
To write it into scientific notation, shift decimal before 3 such that,
[tex]V=\dfrac{5328}{100}[/tex]
No multiply and divide by 10. So,
[tex]V=\dfrac{5328}{100}\times \dfrac{10}{10}\\\\V=\dfrac{5328}{1000}\times 10\\\\V=5.328\times 10^1\ m^3[/tex]
So, the correct option is (a).
If force is made to act on a smaller area, then the pressure will be ______________
What might be an indication that you watch too much TV?
My answer is addiction... It's addiction when it's the first thing you turn on in the morning and in the night when you sleep late when watching the TV.
1) While traveling along a highway a driver speeds up from 10 m/s to 26 m/s in 4 seconds. What is the automobile's acceleration? *
Answer:
4m/s^2
Explanation:
using the formula a = (v_f - v_i) / Δt we can use final velocity, initial velocity, and accel. time to calculate the accel. rate
In this problem it would be a=(26m/s - 10m/s) / 4s
our answer would be 4m/s^2
The answer is A)0.20 but can someone explain how to solve it plsss?!!
Explanation:
The velocity of the wave is:
v = (9.0π rad/s) / (0.1π / cm)
v = 90 cm/s
v = 0.9 m/s
Velocity of a standing wave on a stretched string is:
v = √(T / (m/L))
0.9 m/s = √(0.081 N / (M / 2.0 m))
0.81 m²/s² = 0.081 N / (M / 2.0 m)
M / 2.0 m = 0.1 kg/m
M = 0.2 kg
What is true of daylight hours at locations north and south of the equator? Days are longer than nights north of the equator. Nights are longer than days south of the equator. The length of days and nights change with the seasons.
Answer:
The length of days and nights change with the seasons.
Explanation:
Distance from the equator along with the tilt of Earth's rotational axis contributes to day and night period differences. Daylight hours or the period of sunlight exposure vary due to the inclined axis of the latitudes. In the northern hemisphere during summers, the tilt of the axis is towards the sun which brought more sunlight to the exposed region. And therefore the length of day hours is more than the southern hemisphere which at the same time will be tilted away from the sun.
Answer:
pablo
Explanation:
si pablo come tacos con barbacoa
Compare the structure of a lithium atom to the structure of a lithium ion
Answer:
A lithium atom has 3 protons and 3 electrons. It can lose one of its electrons, making it an ion. It now has more positive protons than electrons so it has an overall positive charge. Therefore it is a positive ion.
Answer:
If an atom gains or loses an electron, it bacomes an ion. ... A lithium atom has 3 protons and 3 electrons. It can lose one of its electrons, making it an ion. It now has more positive protons than electrons so it has an overall positive charge.
Explanation:
Calculate the speed of an 90,000 kg airplane with a kinetic energy of one billion Joules.
Answer:
Kinetic energy=1/2 mv^2.
which is 1,000,000,000=1/2×90,000×v^2.
1000000000=45,000v^2.
v^2=222.22.
v=√222.22.
v=14.9~15m/s.
The speed of a 90,000 kg airplane with a kinetic energy of one billion Joules would be 149.07 m/s
What is mechanical energy?
Mechanical energy is the combination of all the energy in motion represented by total kinetic energy and the total potential energy stored energy in the system which is represented by total potential energy.
Total mechanical energy is s the sum of all the kinetic as well as potential energy stored in the system.
ME = KE + PE
As given in the problem we have to calculate the speed of an airplane with a mass of 90,000 kg and kinetic energy of one billion Joules.
m= 90000 kg
K.E = 1 billion Joules
= 1,000,000,000 Joules
The total kinetic energy
KE = 1/2mv²
By substituting the respective values in the formula of kinetic energy
1,000,000,000 J = 1/2×90000 ×v²
v² = 1,000,000,000 ×2/90000
v² = 22222.222
v =149.07 m/s
Thus, the speed of a 90,000 kg airplane with a kinetic energy of one billion Joules would be 149.07 m/s
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Runner A is initially 5.3 km west of a flag-
pole and is running with a constant velocity
of 8.8 km/h due east. Runner B is initially 5.0
km east of the flagpole and is running with a
constant velocity of 7.7 km/h due west.
How far are the runners from the flagpole
when their paths cross?
Answer in units of km.
Explain what radiation is in 1-2 paragraphs please, thank you
Answer:
Explanation:
Radiation is often categorized as either ionizing or non-ionizing depending on the energy of the radiated particles. Ionizing radiation carries more than 10 eV, which is enough to ionize atoms and molecules and break chemical bonds. This is an important distinction due to the large difference in harmfulness to living organisms. A common source of ionizing radiation is radioactive materials that emit α, β, or γ radiation, consisting of helium nuclei, electrons or positrons, and photons, respectively. Other sources include X-rays from medical radiography examinations and muons, mesons, positrons, neutrons and other particles that constitute the secondary cosmic rays that are produced after primary cosmic rays interact with Earth's atmosphere.
When compared to others, how is a greater velocity represented on a motion map?
Answer:
Longer legs
Explanation:
I took the test
You are riding in a spaceship that has no windows, radios, or other means for you to observe or measure what is outside. You wish to determine if the ship is stopped or moving at constant velocity. What should you do
Answer: give up because nothing can be done.
Explanation:
You would have to give up because you have taken on an impossible task. And nothing can be done because there is no known means available to you to measure or observe what is happening outside the spaceship. And as a result this has made it an impossible task knowing the velocity of the ship or finding out.
A total of 233 electrons pass a point in a circuit in 45 minutes. What is the current?
.1 nano ampere
Explanation:
I= Q flow/ t in secs
I= 233/2700
I= 0.0862e/sec
I= 0.0862/6.25 * 10^8 ( ampere conversion)
I= 0.1 nano ampere .
What is the primary source of a sound?
A refraction
A medium to carry the signal
A vibration
A frequency
Answer:
A vibration is the primary source of a sound.
Answer:
vibration
Explanation:
A sound is the result of a body vibrating in a medium that transmits the energy given off by the body. When a musician draws a bow across the strings of a violin, the strings vibrate and make a sound.
How long does it take an airplane to fly 5000 miles if it maintains a speed of 240 miles per hour
give two application for newton's first law of motion in our daily life
Answer:
1.A driver of automobile brakes abruptly and, by inertia, shoots forward.
2. A stone in the ground is in a state of rest
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A girl hits a baseball with a bat. When the bat strikes the ball, what is the
reaction force?
A. Earth's gravity pulls the ball down.
B. The ball accelerates upward.
C. The bat pushes against the girl's hands.
D. The ball pushes against the bat.
When the bat strikes the ball, the ball pushes against the bat due to reaction force, The correct option is D.
What is reaction force?It is a type of force that acts in the opposite direction of the applied force, for example when one applies active force towards the stationery wall, the wall exerts a reactive force in the opposite direction.
Therefore when a girl hits a baseball with a bat, the baseball applies an active force on the ball in which as a result of reactive force the ball pushes against the bat.
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Answer:the ball pushes against the bat
Explanation:because I got it right
Please Help!! Will Give brainlest!! Four friends push on the same block in different directions. Allie pushes on the block to the north with a force of 18 N. Bill pushes on the block to the east with a force of 14 N. Chris pushes on the block to south with a force of 23 N. Debra pushes on the block to the west with a force of 20 N. Assuming it does not move vertically, in which directions will the block move?(1 point) A) south and east B) north and west C) south and west D) north and east
Answer:
South and West
Those people are pushing the hardest. It will move south faster than it moves west.
Explanation:
A car rolls down a ramp in a parking garage. The horizontal position of the car in meters over time is shown below. Graph of horizontal position x (in meters) on y axis and time (in seconds) on x axis. The initial position is -3 m at t=0 s, and the position increases linearly to 3 m at t=8 s. Then the position is constant at 3 m until t=16 s, then increases linearly to 9 m at t=24 s.
Answer:
Explanation:
At t = 0 , X = -3 m
At t = 8s , X = + 3 m .
At t = 16s , X = + 3 m
At t = 24 s , X = + 9 m
Graph is shown in the attached file .
The displacement of the car between 8 seconds and 24 seconds is 6 m.
The given parameters:
Initial position of the car, x₁ = -3 m, time = 0 sSecond displacement, x₂ = 3 m, time = 8.0 sThird displacement, x₃ = 3 m, time = 16 sFinal displacement, x₄ = 9 m, time = 24 sThe displacement of the car between 8 seconds and 24 seconds is calculated as follows;
the position of the car at 8 seconds = 3 m
the position of the car at 24 seconds = 9 m
The displacement of the car = 9m - 3m = 6 m
Thus, the displacement of the car between 8 seconds and 24 seconds is 6 m.
The complete question is below:
What would be the displacement of the car between eight seconds and 24 seconds?
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What are some of the payoffs
companies receive when offering child care
benefits to employees?
Answer:
Some of the payoffs companies receive when offering child care benefits to employees;
1) Employees are proud to tell others they work for such establishments which make the establishment attractive to talents
2) Reduced attrition for work place policy
3) Increased loyalty of the employees to the companies mission
4) Workers are less likely to take work appointment in other places
5) Child care offering are some of the aspects workers consider when searching for jobs
6) Companies can enjoy tax breaks
Explanation:
Two coyotes that are the same weight are running across the snow. Which of these is true? A. The coyote that is running the fastest has the most energy of motion. B. The coyote that is in front definitely has more energy of motion. C. The coyotes have the same energy of motion, even if they are running at different speeds. D. The coyote that is running the slowest has the most energy of motion.
Answer:
The above has the correct statement
Explanation:
The coyotes have the same energy of motion, even if they are running at different speeds.
Two technicians are discussing electromagnetic induction. Technician A says that the induced voltage can be increased if the speed is increased between the conductor and the magnetic lines of force. Technician B says that the induced voltage can be increased by increasing the strength of the magnetic field. Which technician is correct?
Answer:
Both technicians are correct
Explanation:
In electromagnetic induction, the induced voltage can be increased by increasing the relative speed between the conductor and the magnetic line of force, by increasing the strength of the magnetic field, which increases the magnetic lines of force, Increase the strength of the magnetic field, so there are more flux lines, and also by increasing the angle between the flux lines and the conductor to a maximum of 90 degrees.
CAN YOU GUYS PLEASE HELP I AM STRUGGLING According to Newton's second law, if you have an object that is put under acceleration due to a force, how could you reduce the acceleration on the object by half if you keep the force the same? a Reduce the mass to zero b Increase the force c Double the mass d You cannot decrease the acceleration with the same force
8,000 mg + 2 g = _____________ mg?
Answer:
10,000 mg
Explanation: 1g= 1000mg
Therefore,
8000 mg+2000mg=10000mg
Answer:
10
Explanation:
1mg=1/1000gso 8000mg=8000/1000g
Can someone tell me the answer of this question?
Answer:a 1 10th
b89 10
Explanation:
thats all i know so thank me when yoiu get them right:)
Please help!!! The radius of a circle is 5.5 cm, the circumference in meters is 34.56, the area in square meters is 95.03. What is the area under the curve at the right?
Answer:
47.515 cm²
In meter square= 4.7515 *10^-3 m²
Explanation:
The radius of a circle = 5.5 cm
In meter= 5.5*0.01
= 0.055 m
the circumference= 34.56 cm
in meters = 34.56 cm*0.01
= 0.3456 meters
the area= 95.03 cm²
in square meters =95.03*(0.01)²
in square meters= 9.503*10^-3 m²
. area under the curve at the right
= Area of semi circle
= Area of circle/2
= 95.03 /2
= 47.515 cm²
In meter square= 4.7515 *10^-3 m²
Does temperature affect the amount of sugar that dissolved in tea? Why
Answer:
Generally, a solute dissolves faster in a warmer solvent than it does in a cooler solvent because particles have more energy of movement. For example, if you add the same amount of sugar to a cup of hot tea and a cup of iced tea, the sugar will dissolve faster in the hot tea.
A hockey puck moves 18 meters southward, then 12 meters
northward, and finally 8 meters southward.
Answer:
where is the question?
An object falls freely from height H. if it takes one second to travel last half of total displacement find height H priop to the fall.
Answer:9.82 m
Explanation:
As we know from equation of motion
S=v*t +0.5 a t^2
Know s=H/2
a =9.82
t=1
V=0
Plugging the values
H*0.5=0+0.5*9.82*1^2
H=9.82 m
2x+3y=10 answer must be in decimals