Answer:
we have very few fossils from the time
Explanation:
We have few rock and fossil records that still exist from that far back, and so it is difficult to know what the conditions were like.
It was on the quiz
All of the geologic time before the Cambrian Period is sometimes collectively lumped together because it's impossible to determine the conditions of rock and fossil records
What is Precambrian?Precambrian refers to the time period between the beginning of the Earth's formation (approximately 4.6 billion years ago) and the start of the Cambrian Period.
In conclusion, there are few rock and fossil records from that time period, so it's impossible to determine what conditions were like.
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Name three ways temperature can vary:
Answer:
Degree, Location and Time?
Explanation:
Answer:
Age. One of the most elementary factors that influence normal body temperature is age
Time of The Day. ...
Exercise or Physical Exertion. ...
Stress. ...
Meals. ...
Drugs and Smoking.
Explanation:
m
1 N= 1 kg
m
82
Acceleration = m/s2
PLEASE HELP MEE ?!?!?
Explanation:
Force = mass × acceleration
force /acceleration =mass
20N /2ms^2=mass
Mass =10kg
Answer:
do you speak Spanish?? well I'll show you 1 Kg where the m is and s / ² are you going to take it where Mass m Kg they are giving you an acceleraton clue
Though some self-report error may exist, surveys/interviews are useful in that they allow researchers to collect large amounts of data.
True or False?
Select one:
True
False
The statement "though some self-report error may exist, surveys/interviews are useful in that they allow researchers to collect large amounts of data" is true.
What is a survey?A survey is a means of gathering information from a sample of people using pertinent questions with the goal of understanding populations as a whole.
It is given that:
The statement is:
Though some self-report errors may exist, surveys/interviews are useful in that they allow researchers to collect large amounts of data.
As we know from the definition of the survey, the gathering information from a sample of people using pertinent questions with the goal of understanding populations as a whole.
Even while surveys and interviews aren't perfect, you may still get a lot of information from them.
Thus, the statement "though some self-report error may exist, surveys/interviews are useful in that they allow researchers to collect large amounts of data" is true.
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25%of what number is 21? Explain
Answer:
84
Explanation:
First convert
25
%
to its decimal number.
25
%
=
25
100
=
1
4
=
0.25
25
%
"of" a number means to multiply
25
%
by that number. Let
x
be the number.
0.25
x
=
21
Divide both sides by
0.25
.
0.25
1
0.25
1
x
=
21
0.25
Simplify.
x
=
84
what are electromagnetic waves?
a) things like longitudinal waves
b) ocean waves
c) sound waves
d) electric magnetic fields that travel through a space very quickly
1) Name one thing that can cause global warming
constellation *
a.) the hunter
b.) Pole Star
c.) little bear
d.) pattern of stars
e.) nearest star
Answer:
D
Explanation:
a group of stars forming a recognizable pattern that is traditionally named after its apparent form or identified with a mythological figure.
I hope this helps a bit.
sound waves have a frequency of 1000 hz what is their period?
Answer:
Solve it
Explanation:
The formula for time is: T (period) = 1 / f (frequency). λ = c / f = wave speed c (m/s) / frequency f (Hz). The unit hertz (Hz) was once called cps = cycles per second.
Convert 8765 pounds to tons using one step conversion please help me heheeehehehhee
Answer:
4.3825 tons
Explanation:
Hope it helps :)
The one-step conversion you need is (1 ton / 2000 pounds).
It's a fraction that's equal to ' 1 ', because the top and the bottom are equal.
Multiply the 8,765 pounds by it. That won't change the weight. It'll just change the units.
(8,765 pounds) x (1 ton / 2000 pounds) = 4.3825 ton
Convert 13.1 miles to feet. Using one step conversion
Answer:
69,168 ft
Explanation:
please help me!!!!!!. what difference between gravitational and gravity
You move a 25 N object in 10s with 100 W of power.
How far did you move the object?
Answer:
Distance = 40 meters.
Explanation:
Given the following data;
Force = 25N
Time = 10 seconds
Power = 100 Watt
To find the distance;
First of all, we would determine the work done;
Workdone = power * time
Workdone = 100 * 10
Workdone = 1000 Nm
Next, we use the following formula to find the distance;
Workdone = force * distance
1000 = 25 * distance
Distance = 1000/25
Distance = 40 meters.
Help me plz!!. What keeps the satellite move on it's orbit.
Answer:
velocity and the gravitational pull that Earth has on it.
(motion of a satellite is the force of gravity)
When the Moon passes through Earth's penumbra, it is a:
a.Solar eclipse
b. Penumbral eclipse
c.Total lunar eclipse
d Partial eclipse
Answer: it is B
Explanation: A penumbral lunar eclipse occurs when the Moon passes through Earth's penumbra. The penumbra causes a subtle dimming of the lunar surface, which is only visible to the naked eye when about 70% of the Moon's diameter has immersed into Earth's penumbra.
2) Describe the qualities and the location of supergiant stars based on the H-R diagram.
Answer:
55
Explanation:
Free falling objects accelerate at 9.8 m/s because the force of
acts on them.
speed
gravity
magnitude
motion
The speed of sound through diamond is about 12,000 m/s. The speed of sound through wood is about 3,300 m/s. Which statement explains why the speed of sound is different through these materials?(1 point)
They have different rigidities.
They have different temperatures.
They have different phases of matter.
They have different salinities.
Answer: They have different rigidities.
Explanation:
The speed of sound is different through these materials because, they have different rigidities.
What is meant by rigidity of a material ?The property of a material that prevents its shape from changing as a result of an external force is known as rigidity.
Here,
Given that, the speed of sound through diamond is about 12,000 m/s and the speed of sound through wood is about 3,300 m/s.
This is due to the variation in rigidity of the materials through which the sound is travelling.
The stiffness of the medium (or compressibility in the case of gases) and its density work together to define the speed of sound in that medium. The speed of sound increases with the rigidity of the medium. The speed of sound decreases with increasing medium density.
Hence,
The speed of sound is different through these materials because, they have different rigidities.
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a boy throws a small stone into a pond. waves spread out from where the stone hits the water and travel to the side of the pond. the boy notices that eight waves reach the side of the pond in a time of 5.0 s. what is the frequency of the waves
Answer: 1.6Hz
foe[vqefmvkeqmvkevkefmvqelkfveklveqv
When light strikes an object, what happens to some of the light?
A. Some of the light turns into sound.
B. Some of the light becomes brighter.
C. Some of the light is reflected.
D. Some of the light becomes less bright
Answer:
The light wave could be reflected by the object
Many objects within our solar system remain in constant motion and maintain predictable orbital patterns. What force governs the motion and patterns of objects in our solar system?
Answer:
Gravitational pull of the sun
Explanation:
A well acts as a closed pipe. When
wind blows across the top, it
creates a fundamental frequency of
30.6 Hz. How deep is the well?
(Speed of sound = 343 m/s)
(Unit = m)
Answer:2.80 m
Explanation: you would divide 343 by 4 times 30.6
Answer:
2.80
Explanation:
Acellus
describe tension force (FT) in your own words
Answer In the field of physics, tension is called the force that is exerted by the action of a cable, rope, chain or other similar solid object. ... Since tension is a magnitude of force, it is measured in newtons and is always measured in a direction parallel to the chord on which it is applied.
Explanation:
The helium-filled balloons below are carrying negative electric charges, as shown. Attach two of the balloons to the hooks below to show what would happen if a red balloon and a blue balloon were brought near each other. Plzz help
Answer:
these are in the hooks the balloons repel each other if the hooks are isolated.
Explanation:
In electrostatics, charges of the same sign repel and of a different sign attract each other.
With this explanation we analyze the situation presented, they indicate that the balloons have a negative taste, so when these are in the hooks the balloons repel each other if the hooks are isolated.
If the hooks are connected to Earth, the poop of the balloons is neutralized, so there is neither attraction nor repulsion.
Answer:
Here you go : )
Explanation:
A car is left overnight in a parking lot. What is its instantaneous speed at 12:01 a.m.?
Answer:
0 mph
Explanation:
Answer:
0 mph
Explanation:
4. What impulse occurs when a cart that is originally at rest experiences an average force of 10N
for 2.5s? (include unit) * (T)
Why does an iceberg have more HEAT than a cup of coffee.
Explanation:
Although the iceberg has less internal energy per mass, its enormously greater mass gives it a greater total energy than that in the small cup of coffee
Answer:
The hot coffee has a higher temperature, but not a greater internal energy. Although the iceberg has less internal energy per mass, its enormously greater mass gives it a greater total energy than that in the small cup of coffee.
Explanation:
PLEASE HELP!
A person is standing on ice. He throws a snowball with a force of 4 N to the right, while the snowball pushes the
person with a force of 4 N to the left. What is the net force on the person?
A) 4 N, left
B) 8N
Answer:
A) 4n
Explanation:
He throws a snowball with a force of 4 N to the right, while the snowball pushes the person with a force of 4 N to the left. The given scenario is balanced because the same amount of force is acting in both direction.
At which position is the LOWEST potential energy?
Ronaldo runs across a soccer field, moving 10 meters north, then 8 meters west, then 4 meters south. His
displacement would be:
Answer:
wha is this .....................? same confusion
A physicist does 100 joules of work on a simple machine that raise a box of bioks through a heigjt of 0.2metres. if the efficiency of the machine is 60%, how much work is converted to thermal energy?
Answer:
the work converted to thermal energy is 40 J.
Explanation:
Given;
work done by the physicist,w = 100 J
height through which the book is raised, h = 0.2 m
efficiency of machine = 60% = 0.6
The useful work done by the machine is calculated as;
useful work = 0.6 x 100 = 60 J
The wasted energy = 100 J - 60 J
The wasted energy = 40 J
The wasted energy by the machine is possibly converted to thermal energy by the frictional part of the machine.
Therefore, the work converted to thermal energy is 40 J.