Write Two Facts About Why Bees Are Important To The Ecosystem?
Answer:
Bees pollinate a third of everything we eat and play a vital role in sustaining the planet's ecosystems. Bees are industrious pollinators because they have co-evolved with flowering plants over millions of years. The bees need the flowers for food, while the flower needs the bee to reproduce.
Explanation:
:)
Which direction do fluids (air and water) always move
Answer:
fluids always move from an area of higher pressure to an area of lower pressure.
Explanation:
A square metal plate of edge length 12 cm and negligible thickness has a total charge of 5.6 × 10-6 C. (a) Estimate the magnitude E of the electric field just off the center of the plate (at, say, a distance of 0.49 mm from the center) by assuming that the charge is spread uniformly over the two faces of the plate. (b) Estimate E at a distance of 29 m (large relative to the plate size) by assuming that the plate is a charged particle.
Answer:
a) 2.2*10^7 N/C
b) 60 N/C
Explanation:
To start with, we say that the
Area charge of the plate, σ = q/2A
σ = 5.6*10^-6 / 2(12*10^-2)²
σ = 5.6*10^-6 / 0.0288
σ = 1.944*10^-4 C²/m
Next, we find the electric field
Electric field, E = σ/Eo
Electric field, E = 1.944*10^-4 / 8.85*10^-12
Electric field, E = 2.2*10^7 N/C
b)
E = kq/r²
E = [8.99*10^9 * 5.6*10^-6] / 29²
E = 50344 / 841
E = 60 N/C
This means that the E at a distance of 29 m is 60 N/C
write a vector equation
Answer:
In general, a vector equation is any function that takes any one or more variables and returns a vector. The vector equation of a line is an equation that identifies the position vector of every point along the line. This works for straight lines and for curves.
Explanation:
1.A vector has magnitude (size) and direction:
2.a − b.
3.A vector is often written in bold, like a or b.
4.The vector a is broken up into.
5.We can then add vectors by adding the x parts and adding the y parts:
6.When we break up a vector like that, each part is called a component:
7.|a|
8.||a||
(hope this helps can i plz have brainlist :D hehe)
Help meeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee I am going to follow youuu
Answer:
Answer 11
Explanation:
. Newton's law of gravitation, statement that any particle of matter in the universe attracts any other with a force varying directly as the product of the masses and inversely as the square of the distance between them
A motor has a rotor (with armature) of moment of inertia ????m . The rotor is attached to a gear box of gear ratio G > 1. The output of the gearbox is attached to a mass whose moment of inertia is ????. What will be the moment of inertia ‘felt’ by the motor? What will be the moment of inertial ‘felt’ by someone who is rotating the mass ???? by hand, to turn the motor? Which of the two is large
Answer:
hello your question is incomplete attached below is the complete question
answer : The moment of inertial felt by someone ( J ) is greater that the moment of inertia felt by the motor i.e. J > Jm
Explanation:
Gear ratio G > 1
a) Determine the moment of inertia felt by the motor
moment of inertia felt by Motor = moment of Inertia at the armature
b) Determine the moment of inertial felt by someone who is rotating the mass by hand
moment of inertia felt by someone is = J
The moment of inertial felt by someone ( J ) is greater that the moment of inertia felt by the motor
attached below is a detailed solution
Calculate the mass of air in a room 5 m by 4 m by 3 m the density of air is 1.3 kg/m3
Answer:
Explanation:
density (d) = 1.3 kg/m³
volume of the room (v)
= 5 m * 4m * 3 m
= 60 m³
mass(m) =?
now we know density is defined as mass per unit volume so
d = m / v
1.3 = m / 60
m = 78 kg
Consider the following scenario. A car for which friction is NOT negligible accelerates from rest down a hill, running out of gasoline after a short distance. The driver lets the car coast farther down the hill, then up and over a small crest. He then coasts down that hill into a gas station, where he brakes to a stop and fills the tank with gasoline. Identify the forms of energy the car has,
Answer:
The answer is below
Explanation:
Gravitational Potential energy is the energy stored by an object as a result of its vertical position or height.
Kinetic energy is the energy an object possesses due to its motion.
The law of conservation of energy states that energy cannot be created or destroyed but can be transformed from one form to another.
As the car accelerates down the hill, there is a change in gravitational potential energy as a result of decrease in vertical height. Some of the gravitational potential energy would be changed into work done by friction while the rest would cause an increase in kinetic energy due to the car acceleration. Lastly, when the brake is applied to stop the car, the car would lose its kinetic energy.
What’s E=1/2m v^2
Find v
Answer peek a boo
Explanation:
Answer:
v is the velocity of a object
Which of the following proves that electric fields can convert potential energy into kinetic energy?
a) Two electric charges produce fields. When those fields interact, the charges either attract or repel from each other
b) An electric charge is held stationary in an electric field
c)Two charges are affected by gravity, causing them to attract towards each other
d)Multiple charges are arranged in such a way to ensure that there are no net forces acting upon each other
i think its a or c?....
Answer: a
Explanation:
Gravity Rocks!
Three friends were talking about gravity. One friend
held up a rock and asked his friends whether the gravi-
tational force on the rock depended on where the rock
was located. Each friend had a different idea about a
place where the gravitational force on the rock would
be the greatest. This is what they said:
Lorenzo: "I think if you put the rock on the top of a very tall mountain, the gravita-
tional force on the rock will be greatest."
Eliza: "I think the gravitational force will be greatest when the rock is resting on
the ground near sea level."
Flo: "I think you have to go really high up. If you drop the rock out of a high-
flying plane, the gravitational force will be greatest."
Explain why you agree with
Which friend do you most agree with?
that friend.
Answer:
Eliza’s suggestion is the most promising
Explanation:
Newton’s law of universal gravitation is [tex]F = G\frac{m_1m_2}{r^2}[/tex] where G is a constant and both masses are constant in this experiment as well. So it only depends on r, the distance between the center of mass of both objects.
Bringing it high in the sky, as Flo suggests, is definitely not a good idea because it only increases the distance from the center of the Earth mass.
A mountain contains significant mass, so the center of the Earth mass is somewhat shifted to regions with the largest mountains. However, standing on top of a mountain, as Lorenzo suggests, doesn’t help since the shift of the center of mass, if any, is far smaller than the height of the mountain.
Standing near sea level, as Eliza suggests, is a good way to minimize the distance to the center of the Earth mass.
Which of the following best defines effective listening?
Answer:
The following seems to be the summary including its given phrase.
Explanation:
The willingness to adequately consider the knowledge another speaker provides as well as show interest throughout the subject covered constitutes skills of effective listening. Truly wonderful hearing skills require an individual just to listen fully to the information such that a relevant reading of the information or a piece of evidence can be done.A boy kicks a ball away in a football field.
Which of the following is true about his work done?
a. The energy is dissipated in the air.
b. The energy has transferred from one object to another.
C. The boy does not perform any work.
d. The work done produces twice the amount of heat energy.
b. cause boy transfer his energy from his foot to move the object.
A boy kicks a ball away in a football field,work done is cause boy transfer his energy from his foot to move the object.
What is energy?
Energy is the ability or capability to do tasks, such as the ability to move an item (of a certain mass) by exerting force. Energy can exist in many different forms, including electrical, mechanical, chemical, thermal, or nuclear, and it can change its form.
The energy an object has as a result of motion is known as kinetic energy. A force must be applied to ball in order to accelerate it. We must put in effort in order to apply a force. Following work, energy is transmitted to the item, which causes it to move at a new, constant speed. An ball will store energy as the result of its position is potential energy.
A boy kicks a ball away in a football field,work done is cause boy transfer his energy from his foot to move the object.
To learn more about energy refer to the link:
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Research all three options: diet, exercise, combination of diet and exercise, Write a one page, typed, double-spaced summary of which you think is better and why.
Answer:
EXERCISE
It is very useful than diet and better than diet. All cannot do diet also exercise some of them will do but if we do exercise it is very helpful for health but diet is not much helps regular exercise helps body fitness and health it will burn fat fast if we do regularly or else no and if we do exercise even our face glows naturally. Morning exercise helps to refresh our mind and our full day will be active.For me EXERCISE is better than diet
The starter motor of a car engine draws an electric current of 110 A from the battery. The copper wire to the motor is 4.20 mm in diameter and 1.73 m long. The starter motor runs for 0.95 s before the car engine starts up.
How much electric charge passes through the starter motor?
________
What is the current density in the wire?
_________
How far does an electron travel along the wire while the starter motor is on? (The density of conduction electrons in copper is n = 8.50×1028 1/m3.)
________
Answer:
a. 104.5 C b. 7.94 × 10⁶ A/m² c. 5.83 × 10⁻⁴ m/s
Explanation:
a. How much electric charge passes through the starter motor?
Using Q = It where Q = electric charge passing through the starter motor, I = current = 110 A and t = time = 0.95 s
So, Q = It = 110 A × 0.95 s = 104.5 C
b. What is the current density in the wire?
The current density, J = I/A where I = current = 110 A and A = cross-sectional area = πd²/4 where d = diameter of copper wire = 4.20 mm = 4.20 × 10⁻³ m
So, J = I/A
= I/πd²/4
= 4I/πd²
= 4 × 110 A/π(4.20 × 10⁻³ m)²
= 440 A/55.42 × 10⁻⁶ m²
= 7.94 × 10⁶ A/m²
c. How far does an electron travel along the wire while the starter motor is on? (The density of conduction electrons in copper is n = 8.50×1028 1/m3.)
To find how far the electron travels, we need to find the electron drift velocity from
J = nev where J = current density = 7.94 × 10⁶ A/m², n = electron density = 8.50 × 10²⁸ m⁻³, e = electron charge = 1.602 × 10⁻¹⁹ C, v = drift velocity of electrons and A = cross-sectional area of wire = πd²/4 where d = diameter of copper wire = 4.20 mm = 4.20 × 10⁻³ m
So, v = J/ne
Substituting the values of the variables into the equation, we have
v = 7.94 × 10⁶ A/m² ÷ (8.50 × 10²⁸ m⁻³ × 1.602 × 10⁻¹⁹ C)
v = 7.94 × 10⁶ A/m² ÷ (13.617 × 10⁹ Cm⁻³)
v = 0.583 × 10⁻³ m/s
v = 5.83 × 10⁻⁴ m/s
How do we calculate the restoring force according to Hooke’s law?
Answer:
Accordng to Hook's law
F=kx
So
spring constant × displacement
Explanation:
Answer: A) spring constant × displacement
Accordng to Hook's law
F=kx
So
A) spring constant × displacement
Explanation: hope this helps pls mark me brainliest
Is light from a fire matter
Answer:
Is fire matter? Matter is anything that has mass and occupies space. The flame itself is a mixture of gases (vaporized fuel, oxygen, carbon dioxide, carbon monoxide, water vapor, and many other things) and so is matter. The light produced by the flame is energy, not matter.
Please Help!!
What is the potential energy of a spring that is compressed 0.75 m by a 25 kg block if the spring constant is 85 N/m?
24
34
87
797
Answer:
Potential energy of spring = 24 Joules.
Explanation:
Given the following data;
Spring constant = 85N/m
Extension, e = 0.75m
Mass = 25kg
To find the potential energy of a spring
Potential energy of a spring is given by the formula;
P.E = ½ke²
Substituting into the equation, we have
P.E = ½*85*0.75²
P.E = 42.5 * 0.5625
P.E = 23.91 ≈ 24 Joules
P.E = 24 Joules
Question 7 of 10
What is cos(22")?
O A. 0.93
B. 0.22
C. 0.37
O D. 0.40
Answer:
A. 0.93
Explanation:
a glass beaker has a mass of 50g. a liquid of density 1.8g/cm3 is poured into the beaker until it reaches the 200cm3 mark. calculate the total mass of the beaker and its contents
Answer:
total mass = 410 g
Explanation:
density = 1.8 g/cm³
volume = 200 cm³
density = mass / volume
mass (of liquid) = density x volume
= 1.8 x 200
= 360 g
total mass (beaker + liquid) = 50 + 360 = 410 g [Ans]
Hope this helps!
Someone please help me answer these questions
1. What is the walking
Aquarium to the Key West Cemetery?
A
2. What is the displacement (in miles, with direction) from the
Aquarium to the Cemetery?
3. If you were walking 4 miles per hour how long would it take you
to get from the Aquarium to the Cemetery? (Speed= D/T)
4. If you were to take off in a helicopter from Ft. Zachary State
Historic Site and fly directly to the US Naval Air Station at a constant
speed of 20 miles per hour how long would it take?
Answer:
house away far from
Explanation:
I dont know tbh
explain the intermittent reinforcement schedules in your own words
In behaviorism, Intermittent Reinforcement is a conditioning schedule in which a reward or punishment (reinforcement) is not administered every time the desired response is performed. ... On an intermittent reinforcement schedule the mouse would only receive food every few times (it is typically random and unpredictable).
URGENT HELP !! The coefficients of static and kinetic frictions for plastic on wood are 0.53 and 0.40, respectively. How much horizontal force would you need to apply to a 34.4 kg object to start it moving from rest?
Answer:
43.83 N
Explanation:
Given that,
The mass of an object, m = 34.4 kg
The coefficients of static and kinetic frictions for plastic on wood are 0.53 and 0.40, respectively.
The force of static friction,
[tex]F_s=\mu_smg\\\\F_s=0.53\times 34.4\times 9.8\\\\F_s=178.67\ N[/tex]
The force of kinetic friction,
[tex]F_k=\mu_kmg\\\\F_k=0.40\times 34.4\times 9.8\\\\F_k=134.84\ N[/tex]
Net force acting on the object is :
F = 178.67-134.84
= 43.83 N
Hence, this is the required solution.
In which position is it winter in North America? *
10 points
The model shows Earth in several positions relative to the sun.
3
2
North America
Equator
Position 1 because North America receives the most direct Sun
Position 2 because North America is tilted towards the Sun
Position 3 because North America is parallel to the Sun
Position 4 because North America is tilted away from the Sun
Answer:
position 4
Explanation:
if the north is tilted away it gets no sunlight, so its winter
It is winter in North America in position 4 because North America is tilted away from the Sun.
What is cycle of seasons of Earth?The "cycle of seasons" is caused by the occurrence of each season one after the other throughout the year. The seasons are also influenced by variations in the atmosphere, air vapour, wind, and precipitation.
A season other than summer and winter is created when rain falls continuously throughout a certain time. Other than summer and winter, seasons are seen to occur in different regions due to the local conditions.
As shown in the figure, at position 4, North America is tilted away the Sun, the sun light falls on America in tilted manner. Hence, It is winter in North America in position 4. Whereas at position 2, North America is tilted towards the Sun and It is summer in North America in position 2.
Learn more about Earth here:
https://brainly.com/question/989580
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Understand how to apply the equations for 1-dimensional motion to the y and x directions separately in order to derive standard formulae for the range and height of a projectile.
Answer:
the equations of motion can be separated into an equation that depends on a single variable.
Explanation:
he one-dimensional kinematics equations can be applied to two-dimensional systems because we can write the equations in such a way that each one of them depends on variables in a single dimension plus time, which, because it is a scalar, can be used in all dimensions.
A mathematical way of saying this is that the equations of motion can be separated into an equation that depends on a single variable.
Over an interval of 4.0 s the average rate of change of the concentration of B was measured to be -0.0760 M/s. What is the final concentration of A at the end of this same interval if its concentration was initially 1.600 M?
Complete question:
Consider the hypothetical reaction 4A + 2B → C + 3D
Over an interval of 4.0 s the average rate of change of the concentration of B was measured to be -0.0760 M/s. What is the final concentration of A at the end of this same interval if its concentration was initially 1.600 M?
Answer:
the final concentration of A is 0.992 M.
Explanation:
Given;
time of reaction, t = 4.0 s
rate of change of the concentration of B = -0.0760 M/s
initial concentration of A = 1.600 M
⇒Determine the rate of change of the concentration of A.
From the given reaction: 4A + 2B → C + 3D
2 moles of B ---------------> 4 moles of A
-0.0760 M/s of B -----------> x
[tex]x = \frac{4(-0.076)}{2} \\\\x = -0.152 \ M/s[/tex]
⇒Determine the change in concentration of A after 4s;
ΔA = -0.152 M/s x 4s
ΔA = -0.608 M
⇒ Determine the final concentration of A after 4s
A = A₀ + ΔA
A = 1.6 M + (-0.608 M)
A = 1.6 M - 0.608 M
A = 0.992 M
Therefore, the final concentration of A is 0.992 M.
0.55 kg mouse moving E at 60m s or a 900 kg elephant moving E at 0.03m Which has the most momentum?
Answer:
the mouse
Explanation:
the mouse has a momentum of 33 m kg/s
while the elephant has a momentum of 27 m kg/s
i found this out using p=mv
the centre of mass of a metre rule is at the 50cm mark. state what is meant by Centre of mass
Answer:
Centre of mass of any body is a point where all mass of a body is supposed to be concentrated
it lies in geometrical centre....
Ken Warby holds the world record speed
on water. If he drove his motorboat a
distance of 1000.0 m in 7.045 s, how fast
was his boat moving?
Know
Find
Equation
Solve
Answer:
141.9m/s
Explanation:
know:
distance = 1000.0m
time = 7.045s
find:
speed = ?
equation:
v = d/t
solve:
v = d/t
= 1000.0m/7.045s
= 141.9m/s
therefore, his boat was moving 141.9m/s
1)Pulmonary artery
2)Pulmonary vein
3)Aorta
4)Inferior vena cava
Answer and I will give you brainiliest
see the picture and here is the name of it
A = Pulmonary artery
B = inferior vena cava
C = aorta
D = left ventricle
E = right ventricle
F = pulmonary system in kidney
G = Pulmonary system
H = Pulmonary vein
For moderators that see this#Moderators please don't be mean, dont delete my answers just to get approval from your senior or just to get the biggest moderation daily rank.