Answer:
d
a balanced force acted on it and propelled it to 4,000 km/hr
Explanation:
For the neutrons star which is moving in outer space at 4,000 km/hr, it could only be possible as a result of the balanced force which had already acted on it. This is based on newton's law of motion which states that 'To every action, there is equal and opposite reaction'.
Wave 1
a) How many waves are there in this wave train?
b) Wavelength cm c) Amplitude
cm
Answer:
see below
Explanation:
a wave means one complete wave which is 1 period
so a) 5 complete waves
wavelength is the shortest distance between any two points in phase
so wavelength = 1 CM
amplitude of a wave is the maximum displacement of a particle from its rest position
so amplitude = 3 CM
hope this helps
Which of the following objects has no kinetic energy?
A picture on a wall
A waterfall
A ball flying through the air
A hockey puck sliding across the ice
Answer:
a picture on a wall. because it's not moving
What moon phase is shown in the picture ?
the answer is waxing gibbous moon
Explanation:
.
HELP I GIVE BRAINLIST
what are the drawbacks of relying on fossil fuels ?
A ) Increased levels of atmospheric carbon dioxide
B ) A reduction of air pollution levels in cities
C ) Unlimited supplies of coal, oil, and natural gas
D ) Fossil fuels always burn perfectly, so there are no drawbacks
Answer:
A) Increased levels of atmospheric carbon dioxide
Explanation:
All of the other options are positive effects
The density of iron is 7.97 g/cm. Express it in Sl unit.
Answer:
[tex]d=7970\ kg/m^3[/tex]
Explanation:
Given that,
The density of iron is 7.97 g/cm³.
We need to find the density in SI unit. The SI unit of density is kg/m³.
We know that,
1 kg = 1000 g
1 m = 100 cm
So,
[tex]7.97\ g/cm^3=7.97 \times \dfrac{(\dfrac{1}{1000})\ kg}{(\dfrac{1}{100}^3)\ m^3}\\\\=7970\ kg/m^3[/tex]
So, the density of the iron is [tex]7970\ kg/m^3[/tex].
How much work is done when a 5 N force moves a block 4 m?
The moon is lit by light bouncing off of it. That light reaches Earth as ____. The different shapes that the moon appears to have are called ____. The moon goes through ____ phases as it revolves around the ____ every ____ days. The phase that we see depends on how much of the ____ part of the moon we can see. This depends on the positions of the ____, ____, and ____.
Answer:
Moonlight; phases; eight; 29 days; sunlit; earth; sun; moon.
Explanation:
A moon generally do not have or possess light but rather it reflects the light from the sun.
The moon is lit by light bouncing off of it. That light reaches Earth as moonlight. The different shapes that the moon appears to have are called phases. The moon goes through eight (8) phases as it revolves around the earth every 29 days. The phase that we see depends on how much of the sunlit part of the moon we can see. This depends on the positions of the earth, sun, and moon.
The eight (8) phases of the moon include the following;
1. Last quarter half moon.
2. Waning crescent moon.
3. New moon.
4. Waxing crescent moon.
5. First quarter half moon.
6. Waxing Gibbous moon.
7. Full moon.
8. Waning Gibbous moon.
Of the following reactions, which is a fusion reaction?
a.
uranium-235 absorbing a neutron and splitting into xenon-140, strontium-94, and two neutrons
b.
hydrochloric acid combining with sodium hydroxide to form a salt and water
c.
carbon-14 decaying into nitrogen-14 and a beta particle
d.
curium-246 combining with carbon-12 to form nobelium-254 and four neutrons
Answer:
Option D is correct.
Explanation:
It is fusion reaction.because curium combines with carbon to form a big nuclei of nobelium.[tex]Cm_{246} +C_{12}[/tex] → [tex]No_{254}[/tex]
Hence, it is the fusion reaction.
What is fusion?When two or more nuclei fuse together to form a heavy nucleus with the energy released, is called fusion.
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ill give brainliest,
Nascar fans love race day when they get a chance to pull for their favorite drive. If a driver was able to travel 600 miles in 3 hours, what was his/her average speed?
I WILL GIVE BRAINLIEST!!!
Answer:
is that high school work??? cause I don't know it and I'm about to go to high school
The musical tone a piano has a frequency of 346HZ and a wavelength of 1.3 M what is the speed of the sound
Answer:
v= 449.8 m/s
Explanation:
Given data
Frequency= 346Hz
Wave length= 1.4m
The expression below is used to find the speed
[tex]v= f \lambda\\\\[/tex]
substitute
[tex]v= 346*1.3\\\\v= 449.8 m/s[/tex]
Hence the speed is v= 449.8 m/s
Which organ system provides structural support to other organ systems
A.Skeletal
B.Muscular
C.Nervous
D.respiratory
Answer:
A. SkeletalExplanation:
I hope it helps ❤❤
A 2.0-kilogram mass is moving with a speed of 3.0 m/s. What is the kinetic energy of the mass?
Answer: 9 Joules
Explanation:
Kinetic enegry is one half the mass multiplied by the velocity squared
KE = 1/2mv^2
[tex]KE=1/2(2)(3^2)\\KE=3^2\\KE=9J[/tex]
The kinetic energy of the body is 9J
What is kinetic energy?Kinetic energy is the energy possessed by a body due to its motion.
It is claculated by formula,
K.E = [tex]\frac{1}{2}mv^{2}[/tex]
Here,
The mass of the body = 2.0kg
speed = 3.0m/s
So kinetic energy K.E = [tex]\frac{1}{2}mv^{2}[/tex]
K.E = [tex]\frac{1}{2} (2)3^{2}[/tex] = 9J
So the kinetic energy of the body is 9J
To know more about kinetic energy here
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3. Atoms with the same number of protons and electrons are neutral, and their charges add up to
a) zero
b) one
c) ten
Answer:
a) zero.
Explanation:
If the charge of an atom is neutral, then that means it has neither a negative charge nor a positive charge. So, it would have a charge of 0.
Hope this helps!
A team of students uses a Bunsen burner to heat a beaker full of ice and uses a thermometer to measure the temperature of the sample as it heats. Their data indicate that the ice maintains a constant temperature of 0°C. Which of the following could be occurring? Select all the options that apply.
Answer:
1. The ice molecules are at a temperature of 0°C;
2. The ice molecules are absorbing latent heat which would result in their turning to liquid water. Therefore, melting or fusion is occurring.
Note: The question did not provide any options to choose from.
Explanation:
The process of change of state occurs when heat is added or removed from a substance. For example, solid may change to a liquid when heat is added to it whereas a liquid may change to liquid when heat is removed from it.
During the process of change of state, the temperature of the substance undergoing a change of state does not change throughout the time it is undergoing the change. The temperature will begin to increase or decrease when all the molecules of the substance has undergone a change of state. The heat supplied to or removed from a substance during a change of state is known as latent heat.
When a solid changes to liquid, it is known as fusion and the heat absorbed by the solid substance is known as latent heat heat of fusion. If a liquid changes to gas, it is known as vaporization and the heat absorbed by the liquid is known as latent heat of vaporization.
In the experiment by the students above, since the temperature of the ice remains constant at 0°C when heat is supplied from the Bunsen burner to it, the following processes could be occurring:
the ice is at a temperature of 0°C;the ice molecules are absorbing latent heat which would result in their turning to liquid watermelting or fusion is occurringAnswer: B, C, D
Explanation:
trust me
How much does a 60 kg table weigh
Answer:
588 N
Explanation:
weigh = Mg
I hope you got that. Thanks and upovote that
If the force of gravity was suddenly removed between the earth and sun, how would Earth move?
Group of answer choices
The sun would fly off into space.
The Earth would fly off into space in a straight line.
The Earth would fly off into space in a curved path.
The Earth would fall into the sun.
Answer:
the earthe would fly off into space in a straight line
Which statement best describes twins with identical DNA?
O A. The twins will not be similar physically but may have similar behaviors.
OB. The twins will not share any similarities.
c. The twins will be identical physically and behaviorally.
D. The twins will be very similar physically but will have some unique behaviors.
The best description of twins with identical DNA is that the twins will be identical physically and behaviorally. Thus, the correct option is C.
What are the identical DNA twins?Identical twins are also called as the monozygotic twins which result from the fertilization of a single egg by a single sperm, or with the fertilized egg which are then splitting into two individual offspring. Identical twins share the same genomes and are also of the same sex.
Identical twins are also called as monozygotic twins, these result from the fertilization of a single egg by a single sperm, with the fertilized egg which then splitting into two identical cells. Identical twins share the same genomes and are always of the same sex.
Therefore, the correct option is C.
Learn more about DNA here:
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A force of 162 N is applied to an object causing it to accelerate at a rate of 3.8 m/s^2. What is its mass?
A. 0.2 kg
B. 616 kg
C. 43 kg
D. 102 kg
Answer:
43 kg
Explanation:
Force (F) = 162 N
acceleration (a) = 3.8 m/s²
mass (m) = ?
We know
F = m * a
162 = m * 3.8
m = 162 / 3.8
m = 43 kg
It's mass is 43 kg.
Hope it will help you :)
A boy of mass, m weights 895 N. What is his mass, m?
Answer:
91.3 kg
Explanation:
weight = m*g
m: mass
g: gravity = 9.8 or 10 (depends on what your instructor tells you to use)
mass = w/g
895/9.8 = 91.3 KG
Organ systems are groups of organs that do not carry out similar
functions
True
False
Answer:
False.....................................
what moon phase will occur about 14 days after a first quarter?
Answer:
waxing gibbous is the answer.
A microwave oven has 1200 W. If it receives 120 V of potential difference, what is the current in the microwave?
Answer:
10amps
Explanation:
Given data
Power =1200W
Voltage =120V
Required
The current I
From
P=IV
I= P/V
Substitute
I=1200/120
I= 10amps
Hence the current is 10amps
I really need help please ASAP
What is radiant energy emmited by the sun
Answer:
Solar radiation is radiant energy emitted by the sun, particularly electromagnetic energy.
Answer:
the earth because us humans all live there and do many things like excercise jobs cleaning and other things
HURYY PLEASE
The processes that transform inputs to outputs are what part of a system?
the components
the surroundings
the flow
the boundary
my gosh im in fifth grade and need an answer stat dude what causes lightning
A. build up of electrical charges in the clouds
B. flow of electrical charges among clouds
C. light energy created in the clouds
D. reflection of light in the clouds
Answer:
it's either A or B because lighting is an electrical discharge caused by imbalance between storm clouds and the ground
Explanation:
pretty sure it's A though
Khaled said the North star is special because it appears all over the world and its changes position.
a. false
b.true
All objects in the universe are attracted to each other by the force of. A. effort
B. friction
C. inertia
D. gravity*
Answer:
It encapsulates the idea that all the particles of matter in the universe attract each other through the force of gravity – Newton's law tells us how strong that attraction is. ...
Explanation:
your answer
Answer:
So, I noticed that somebody rated the other answer here 1 star. But, if you really can't get it, (which doesn't make sense because the answer is literally in it) the answer is gravity. Which would make the answer D. gravity
Explanation:
Sankey Diagrams
LED light
What is the efficiency of this LED light?
10%
20%
80%
100%
Feedback?
Answer:i think 10
Explanation: