Answer:
B - Light Year (LY)
help pls this is for science
Answer:
It's a transverse wave.
at what distance from a 2.45*10^-6 C charge will the electric field be 100 N/C?
Answer:14.8
Explanation:
Trust me
The distance will be = 14.85 m
What is electric field ?A region around a charged particle or object within which a force would be exerted on other charged particles or objects.
given :
Charge (q)= 2.45*[tex]10^{-6}[/tex] C
Electric field (EF) = 100 N/C
to find = ? distance (r)
Electric field = 1/4π∈o * (q/[tex]r^{2}[/tex])
100 = 9 * [tex]10^{9}[/tex] * ( 2.45*[tex]10^{-6}[/tex] / [tex]r^{2}[/tex])
[tex]r^{2}[/tex] = 220.5
r= [tex]\sqrt{220.5}[/tex]
r = 14.85 m
The distance will be = 14.85 m
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the main purpose of the turbine in a turbojet engine is to
Answer:
The main purpose of the turbine in the turbojet engine is to Drive the compressor.
Explanation:
Determine the stopping location of the prize wheel. At this moment it is centered on the number 11. It is spinning at a rate of 124.40 rpm. It is slowing at a rate of 1.400 rad/s/s.
Predict the time the wheel will remain spinning, the angular displacement it will go through, and then use this to predict the number on which the wheel will stop. To be safe, you will also get one number the right and to the left of the number you chose.
Answer:
The wheel spins for 11.43s. The number cannot be determined.
Explanation:
We know that initial velocity is 124.4 rpm = 13.027137522 rad/s, acceleration is -1.14 rad/s^2, and final velocity is assumed to be 0 rad/s. We are asked to find t and displacement. We use the equation [tex]\omega=\omega_0+\alpha t[/tex] where [tex]\omega=0 rad/s[/tex], [tex]\omega_0=13.027 rad/s[/tex], [tex]\alpha=-1.14rad/s^2[/tex], and [tex]t=?[/tex].
Rearrange the equation to obtain [tex]\frac{\omega-\omega_0}{\alpha}=t[/tex]. Plug in the numbers and solve to obtain [tex]t=11.43s[/tex].
The number of the wheel cannot be determined as we do not know the placement of numbers on the wheel.
Define discrimination and write a sentence using the word.
Define discrimination and write a sentence using the word.
Answer:
discrimination: prejudice towards a person/group based on their race, sex, age, and/or sexual orientation
Explanation:
People of color face discrimination because of the color of their skin.
Answer:
Discrimination is treatment or consideration of, or making a distinction of or against a person or thing based on the group, class or category to which that person is perceived to belong or rather.
Ana walks from 4 m to 200 cm. Which of the following statements is true about
her motion? Explain
distance = 2 hm
distance = 20 cm
distance = 2 cm
distance = 2.0 m
Matt does not want to accompany his friend to the rooftop of a skyscraper because looking down from the rooftop fills him with dread, and leaves him short of breath and
sweaty. Which psychological disorder is Matt likely to be suffering from?
Answer:
anxiety disorder (plato and edmentum)
Explanation:
what type of galaxy tends to be the oldest? Explain.
Answer:
Elliptical galaxies, such as M87, are the oldest and roundest galaxies in the universe. Astronomers think these galaxies are formed in major mergers—dramatic collisions between galaxies that result in one massive galaxy being entirely consumed by another.
Explanation:
hope this helps...
have a good day...
2. A rock is dropped from rest at the top of a 10 meter tall building. How much time does the rock
take to hit the ground?
Answer:
1.4 seconds
Explanation:
here u= 0
v= ?
h= 10m
g= 9.8 m/ s*2
using 2as = v^2 - u ^2
2x9.8x10 = v^2 - 0
v^2 = 196
v = 14 m
time = v- u/ a
14 / 98
1.4 seconds
What are the coefficients need to balance the following equation: H2+O2=H2
Answer:
we can't balance this because there are no atoms of oxygen in the product side
A 4kg object has a momentum of 12 kg*m/s, what is the objects velocity?
Answer:
3m/s
Explanation:
momentum=mass x velocity
to find velocity...
we change subjects and make velocity the subject,thus , velocity=momentum/mass
v=12/4 =3m/s.
What happens to molecules when their kinetic energy decreases? * 6 points They move slower they move faster they get heavier It depends on the type of molecule
When ANYTHING moves slower, its kinetic energy decreases.
Ball A is projected vertically upwards at a velocity of 16m.s-¹ fron the ground. ignore the effects of air friction. use the ground as zero reference. a) calculate the time taken by ball A to return to the ground. b) draw a velocity time graph for ball A
Answer: 3.26 s
Explanation:
Given
The ball is projected upward with a velocity [tex]u=16\ m/s[/tex]
Using the equation of motion
[tex]s=ut+\frac{1}{2}at^2[/tex]
Here, displacement is zero as the ball returns to its initial position
[tex]\Rightarrow 0=16\times t-0.5\times g\times t^2\\\Rightarrow t(16-0.5\times 9.8\times t)=0\\\text{i.e.}\ t=\dfrac{16}{4.9}=3.26\ s[/tex]
the velocity of the ball at any instant is given by
[tex]v=u+at\\v=16-9.8t[/tex]
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?
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
6. Do you think that aliens exist?
Can someone please help me and i will give brainliest if i can.
Answer:
Because 1 change in one factor can effect the other and that one can effect the other and so on and so on.
So, let's just say water were to stop flowing, how would the oceans take that? How would precipitation take it?
Write forty million in scientific notation.
Answer:
40,000,000 ⇒ scientific notation
= 4 × [tex]10^{7}[/tex]
what is jello tell me i know lets see if you know
i need help with 1-10
Answer:
1) C. Energy
2) A. Joule
3) D. Joule
4) B. Potential
5) A. Greater
6) C. Largest
7) A. Speed and mass
8) A. Kinetic
9) A. Kinetic
10) D. Height and mass
You toss an apple horizontally at 9.5 m/s from a height of 1.8 m. Simultaneously, you drop a peach from the same height. How long does it take the peach to reach the ground?
Answer:
Peach and Apple will take the same time as the gravitional pull acting on both of them is equal.
height of peach=initial velocity*time+1/2*gravitional pull*(time^2)
1.8=0*time+1/2*9.8*time^2
1.8=0+1/2*9.8*time^2
1.8=1/2*9.8*time^2
3.6/9.8=time^2
taaking value of gravitional pull approx to 10
3.6/10=time^2
0.36=time^2
0.6=time
therefore, the time taken is 0.6sec
Explanation:
The time it takes the peach to reach the ground is 0.61 sec
From the question,
We are to determine how long it would take the peach to reach the ground.
From one of the equations of kinematics for free falling objects,
We have that
[tex]H = ut + \frac{1}{2}gt^{2}[/tex]
Where
H is the height
u is the initial velocity,
t is the time
and g is the acceleration due to gravity ( g = 9.8 m/s²)
Since the object is dropped with no velocity, then the initial velocity is 0 m/s
From the given information
H = 1.8 m
u = 0 m/s
Putting the parameters into the formula,
We get
[tex]1.8 = 0(t) + \frac{1}{2}(9.8)t^{2}[/tex]
This becomes
[tex]1.8 = 0 + 4.9t^{2}[/tex]
[tex]1.8 = 4.9t^{2}[/tex]
Then,
[tex]t^{2} = \frac{1.8}{4.9}[/tex]
[tex]t^{2} = 0.367347[/tex]
∴ [tex]t =\sqrt{0.367347}[/tex]
t = 0.60609 sec
t ≅ 0.61 sec
Hence, the time it takes the peach to reach the ground is 0.61 sec
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The distance from Earth to the North Star is about 430 light-years. Which of the following statements describes why scientists use the light-year unit to measure distance in space?
A.) A light-year is very small and distance in space are very small
B.) A light-year unit is very small and the distance in space are very large
C.) A light-year unit is very large and distance in space are very small
D.) A light-year unit is very large and distance in space are very large
Answer:
D
Explanation:
D
10 poin
What is the momentum of a 25kg cart traveling left with a velocity of 10
m/s?
Help me please ()- :))
Answer:
A pardon
Explanation:
Hope this helps
Answer:
that would probably be a A.Pardon
what device creates a magnetic field from an electric current ?
Answer:
An electromagnet is the device through which runs current and it creates a magnetic field.
. 8 quarts = ________ pints 12 pints 10 pints 4 pints 16 pints
Answer:
According to my calculations it equals to 16 pints
Explanation:
You know that there is a calculator online for this stuff right?
Please help mee
1. A body weighing 2 kg moves in a straight line with a speed of 72 km / h. If the force 10N will act on the body, after how long will its speed become 30m / s?
Answer:
It's an uniformly accelerated motionVf=at +v0v0=72 km/h:3.6=20 m/s
a=F/m=10/2=5m/s^2
t=(vf-v0)/a
t= (30-20)/5=10/5=2s
2. You are stirring some soup on the stove and you notice that the metal spoon is getting hot.
What type of heat transfer?
help me with this question plz
Answer:
Greatest position of the ball are z
How many significant digits are in the number 0.010?
what is the shape of a solid?
Answer:
3d shape is the shape of solid