Answers
Related Questions
How do the sperm cells of nonvascular plants reach the egg cells during reproduction?
A.) The sperm cells are forcefully ejected from their capsules to hit the egg cells.
B.) The sperm cells are blown by the wind and land on the egg cells.
C.) The sperm cells swim to the egg cells through their watery surroundings.
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Answer:
C.) The sperm cells swim to the egg cells through their watery surroundings.
it is made up of small particles
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Answer:
Everything is made up of tiny particles called Matter
An old woman is worried about time. She walks at a rate of 2 meters per second and travels a
distance of 454 meters. How long does it take her to complete the motion?
Please help ASAP!! BRAINLIST please explain thankyou!!!
Answers
Answer:
227 seconds.
Explanation:
Speed is equal to distance divided by time. s = d/t
We can rearrange this algebraically to solve for the time it will take to cover a certain distance at a certain speed. Time is equal to distance divided by speed. t = d/s
Then we substiture our known values for the variables and solve for our unknown.
t = 454m / 2m/s = 227s
Answer:
If the lady is traveling 2 meters per second and she travels 454 meters then you will have to divide 454 by 2 to get the amount of time she walked.
454 divided by 2 = 227
This means that the lady traveled for 227 seconds or about 3.78 minutes.
A car travels along a straight road to the east for
100 meters in 4 seconds, then has to turn around
and goes back west for 50 meters in 1 second.
Determine average speed and average velocity.
Answers
Answer: 90 m/s, 70 m/s
Explanation:
Given
A car travels 100 m east for 4 seconds and then turn around
goes back west for 50m in 1 sec
Distance traveled in the east is [tex]100\times 4=400\ m[/tex]
Distance traveled in the west is [tex]50\times 1=50\ m[/tex]
Total distance[tex]=400+50=450\ m[/tex]
total displacement[tex]=400-50=350\ m[/tex]
total time [tex]t=4+1=5\ s[/tex]
Average speed
[tex]\Rightarrow s_{avg}=\dfrac{\text{distance}}{\text{time}}=\dfrac{450}{5}\\\\\Rightarrow s_{avg}=90\ m/s[/tex]
Average velocity
[tex]\Rightarrow v_{avg}=\dfrac{\text{displacement}}{\text{time}}=\dfrac{350}{5}\\\\\Rightarrow v_{avg}=70\ m/s[/tex]
The amount of potential energy (PE) an object has depends on the object's _____________. *
height
motion
velocity
Joules
The amount of kinetic energy (KE) an object has depends on the object's _____________ *
height
motion
acceleration due to gravity
Joules
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The amount of KE an object has depends on the objects motion.
Hope this is correct. I believe it is but I may still be wrong and if I am i’m so sorry!!
How is a circuit formed
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Answer:
An electrical circuit is composed of a source of electrical power, two wires that can carry electric current, and a light bulb. One end of both the wires is attached to the terminal of a cell while their free ends are connected to the light bulb. The electrical circuit is broken when the bulb is switched off.
Click on the graphic below until the correct answer appears.
Which applies to a real machine?
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Answer:
there is no graphic
Explanation:
what is the formula of kinetic and potential energy
hey its haris
Answers
Answer:
Explanation:
potential energy = mgh
kinetic energy = 1/2mv²
(gravitational) potential = mgh
(spring) potential = 1/2kx^2
What distance separates Earth and the Sun? A 300,000 km per second B Eight light-minutes C 149 million light-seconds D One light-year
Answers
Answer:
B Eight light-minutes
Explanation:
In the case when the distance separated earth and the sun so here we orbit the sun for a 150 million km distance and the light moves would be 300,000 kilometers per second
Now divide this
= 150 million ÷ 300,000 kilometers per second
= 500 seconds
This 500 seconds represent 8 minutes and 20 seconds
Hence, option B is correct
Answer:
B) Eight light-minutes
3. Jeremy has a solution with a mass of 228 g. He knows that the mass of the solvent was 224 g. How much is the mass of the solute in the solution?
Answers
there is 4g of solute in the solution.
The graph above represents a object moving
____
The velocity of the object is i
____
The acceleration of the object is ____
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The object's velocity is positive and decreasing.
Its acceleration is negative.
After being pushed and released, a 50 kg crate slides across a factory floor. Friction on the sliding crate is 200 N, what is the crates acceleration ?
Answers
200 = 50 * a
4 = a
Therefore acceleration is 4ms^-2
In which situations is elastic potential energy present
Answers
Answer:
if positioned at height
Explanation:
just search it online
Answer: 1st, 4th, and 6th choice
A bow is drawn back from its equilibrium position.
A spring toy dart gun is loaded with a dart.
A bungee cord is stretched with a person at the end.
Explanation:
If these are the choices...
A bow is drawn back from its equilibrium position.
An arrow rests on a bow.
A spring toy dart gun is unloaded.
A spring toy dart gun is loaded with a dart.
A bungee cord is connected to a tall tower.
A bungee cord is stretched with a person at the end.
Edge 2021
How much impulse is applied by a 25 N force in 30 seconds?
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[tex]\mathfrak{\huge{\orange{\underline{\underline{AnSwEr:-}}}}}[/tex]
Actually Welcome to the Concept of the Impulse.
Impulse is denoted by 'J'
hence, J = F. dt
so we get as,
J = (25)*(30)
J = 750 N-s
===> hence the impulse is 750 N-s
Impulse is applied by a 25 N force in 30 seconds is 750 N-s.
What is force?A force is an effect that can alter an object's motion according to physics. An object with mass can change its velocity, or accelerate, as a result of a force. An obvious way to describe force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction.
Concept of the Impulse.
Impulse is denoted by 'J'
hence, J = F. dt
so we get as,
J = (25)*(30)
J = 750 N-s
hence the impulse is 750 N-s
Impulse is applied by a 25 N force in 30 seconds is 750 N-s.
To learn more about force refer to the link:
brainly.com/question/13191643
#SPJ2
why do we tilt umbrella in rain. Explain
Answers
Answer:
Rain is falling vertically. A man running in the road keeps his umbrella tilted but a man standing on road keeps his umbrella vertical to protect himself from the rain but both of them keep their umbrella vertical to avoid the vertical sun-rays. ... Thus we can tilt the umbrella to avoid it.
Explanation:
XOXO
Kit
Need help, please :D.
What is the kinetic energy of a 160 kg object that is moving at a speed of 20 m/s ?
Answers
Hope this helps :)
What sort of force is magnetism?
pls help ASAP :)
no links pls
Answers
Answer:
Magnetism is one aspect of the combined electromagnetic force. It refers to physical phenomena arising from the force caused by magnets, objects that produce fields that attract or repel other objects.
Which has the strongest covalent bonds?
H2O
CO2
H2
N2
Answers
Answer:
co2 would be the best answer and because i just took this
Explanation:
number of atoms of each element Sodium oxide?
Answers
Answer:
There are two sodium atoms for every one oxygen atom in Sodium Oxide.
Explanation:
Answer:
2 sodium atoms
1 oxygen atom
Explanation:
Sodium is in valency 1 while oxygen is in valency 2. When the two combine they exchange their valencies hence the number of their atoms. Not so sure ..
HELP PLEASE!! GIVING BRAINLIEST!! If you answer this correctly ill answer some of your questions you have posted! (20pts)
Answers
Explanation:
potential energy =360800J
mass(m)=?
height (h)=25m
g=9.8m/s²
we have
potential energy =360800J
mgh=360800J
m×9.8×25=360800
m=360800/(9.8×25)=1472.653061kg
Answer:
HELP PLEASE!! GIVING BRAINLIEST!! If you answer this correctly ill answer some of your questions you have posted!
When an object (like a ball) falls, some of its___ energy changes to ___ energy, due to the law of conservation of energy
Answers
Answer:
potential, kinetic
Explanation:
pls give brainliest :p
10-kg box is sliding across an ice rink at 10 m/s . A skater exerts a constant force of 10 N against it. How long will it take for the box to come to a complete stop?
Answers
Answer:
Time, t = 10 seconds
Explanation:
Given the following data;
Mass = 10kg
Force = 10N
Final velocity = 10m/s
Initial velocity = 0m/s
To find the time;
First of all, we would find the acceleration of the box.
Force = mass * acceleration
10 = 10 * acceleration
Acceleration = 10/10 = 1m/s²
Now, we can find the time by using the first equation of motion;
V = U + at
10 = 0 + 1t
10 = t
Time, t = 10 seconds
Therefore, it will take 10 seconds for the box to come to a complete stop.
How fast will a 1200 kg car be travelling when its momentum is 2400 kgm/s?
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Answer:
Slow
Explanation:
The equation is:
p = mv
m = 1200
p = 2400
2400 = 1200v <-- divide both sides by 1200
v = 2 m/s
A boy pushes a 50 kilogram wagon with a force of 4 N east while an orangutan pushes the wagon
with a force of 4 N west. What is the resulting acceleration of the wagon?
Answers
In 1965, a group of students wore black arm bands to school in protest of American policies in Vietnam. Administrators banned the wearing of armbands on school grounds; however, the students wore them again and were suspended. A lawsuit followed, and the case was eventually taken to the Supreme Court.
Answers
Answer:
protected under students first amendment rights
Explanation:
did the studyisland :)
What’s the difference between mechanical and chemical weathering
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Answer:
Mechanical weathering is the physical breakdown of rock into smaller pieces. Chemical weathering is the breakdown of rock by chemical processes.
Explanation:
Mechanical weathering (also called physical weathering) breaks rock into smaller pieces. These smaller pieces are just like the bigger rock, just smaller. That means the rock has changed physically without changing its composition. The smaller pieces have the same minerals, in just the same proportions as the original rock.
Chemical weathering is the other important type of weathering. Chemical weathering is different from mechanical weathering because the rock changes, not just in size of pieces, but in composition Chemical weathering works through chemical reactions that cause changes in the minerals.
Please help!!!! It's due today!!!
Answers
Calculate the force that the 4kg block exerts on the 10kg block
Answers
force10kg=ma=10*2
force4kg=ma=(10*2)=20
the4 kg is pushing against the 10kg block
vf=vi+at
-10=20*28/14 * t
t=30/2=15sec
i hope this can help you.
A 15 W electric shaver is used for 3 minutes. How much energy does it use in joules?
Answers
Change in E=p*t
=15*3
=45
The answer is 45J.
Light travels from air into a swimming pool. How does its speed change?
Answers
Answer:
D
Explanation:
Answer:
D
Explanation:
it would move at the same speed because light makes it go at the same speed