Answer: B
Explanation:
Due to the rubbing of the balloons on their hair, the balloons have gained negative charges which lie on the balloons surfaces. Like charges will repel each other according to the Coulomb force
In mammals, the weight of the heart is approximately 0.5% of the total body weight. Write a linear model that gives the heart weight in terms of the total body weight. Use the model to find a) the weight of the heart of a human whose weight is 185 lbs. Answer in units of lbs.
Answer:
The weight of heart of a human is 0.93 lbs.
Explanation:
Given that,
Approximately weight of heart is 0.5 % of the total body weight.
Weight of human = 185 lbs
Let the the weight of total body is w and weight of heart is [tex]w_{h}[/tex].
We need to calculate the weight of heart of a human
Using given data
[tex]w_{h}=0.5\times w[/tex]
Where, h = weight of heart
w = weight of human
[tex]w_{h}=\dfrac{0.5}{100}\times 185[/tex]
[tex]w_{h}=0.93\ lbs[/tex]
Hence, The weight of heart of a human is 0.93 lbs.
How and why can two lethal elements combine to form an essential
compound for health?
Answer:
Two lethal elements can combine to form an essential compound for health by undergoing a chemical reaction such that the properties of the individual elements are different from the properties of the product and are no more lethal
Example Mercury and Sulfur combine to form cinnabar which is used as a medicine to relieve pain, antiseptic, and to cure diseases
Mercury and sulfur combines because mercury readily combines with sulfur at high temperatures
Explanation:
Mercury is a lethal element that also has harmful effects on the neurological system
Sulfur is lethal when too much of it is consumed
how can an electrical current produce a magnetic field?
Answer:
by charging the coil
Explanation:
do you know how a magnet grabs another magnetic material and move it closer, an electric current passes through the coil making it act like a magnet by charging the coil called electromagnetism
What are the differences between open star clusters and globular star clusters.
Answer:
Globular star clusters are very symmetrical in shape, and are densest toward their centers. Open star clusters are more irregular in shape. Globular clusters orbit in the halo of our galaxy, centered on the galaxy's center and expanding above and below the galactic disk. Open star clusters tend to orbit within the disk.
Explanation:
I hope this helps!
The left hemisphere of the brain controls the right side of the body. Please select the best answer from the choices provided T F.
Answer:
True
Explanation:
The different sides control the opposite side of the human body
The left hemisphere of the brain controls the right side of the body. So, the given statement is True.
What is Brain?The brain is defined as the most complex part of the human body, a three-pound organ that is the seat of intelligence, the interpreter of the senses, the initiator of body movement, and the controller of behavior. The brain is said to be the source of all the qualities that define our humanity.
The brain is usually divided into symmetrical left and right hemispheres with each hemisphere in charge of the opposite side of the body, so the right brain controls the left hand while the right hemisphere also takes sensory input from the left and vice versa.
Therefore, the given statement is True.
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n his Book of Questions, Gregory Stock asks, "If you could spend one year in perfect happiness but afterward would remember nothing of the experience, would you [spend a year that way]?" How would you answer Stock's question? Address either the psychological or philosophical issues raised by your response.
Answer:
1111111
Explanation:
Answer:
564356
Explanation:
Hello people ~
The voice box is also called as
(a) stomach
(b) heart
(c) larynx
(d) mouth
Answer:
(c) larynx
Explanation:
It is the region of the throat that contains the vocal cords and is used for swallowing, speaking, and breathing.
I am joyous to assist you at any time.
Answer:
larynx
Explanation:
This part is present under our throatThis contains many vocal cords.It helps us to speak .It also helps in swallowingWhich two phrases describe critical thinking skills used in the pursuit of
science?
A. Using knowledge and experience to interpret an observation of a
phenomenon
B. Developing a philosophical argument for encouraging interest in
answering scientific questions
O
C. Reading scientific papers in order to pursue personal interests
D. Evaluating various solutions to scientific problems based on
ethical considerations
E. Applying logic to decide which answer to a question is most likely
to be true
3. What methods are you using to test this (or each) hypothesis?.
Answer:
Traditional Method->>>>I'm not 100% sure of my answer but gl buddy
Step 1 Identify the Null Hypothesis and the Alternative Hypothesis
Step 2 Identify α (Level of Significance)
Step 3 Find the critical value(s)
Step 4 Find the test statistic
For a Proportion: Hand calculation
TI 83/84 – Use 1PropZTest (See Handout H-404)
For a population mean (with α known):
TI 83/84 - Use Z-Test (See Handout H 404)
For a population mean (with α Not known):
TI 83/84 - Use T-Test (See Handout H-404)
Step 5 Draw a graph and label the test statistic and critical value(s)
Step 6 Make a decision to reject or fail to reject the null hypothesis
Reject - The test statistic falls within the critical region.
Fail to Reject - Test statistic does not fall within the critical
region.
P-Value Method:
P-value is the area determined as follows:
Left Tail Test: p-value is the area to the left of the test statistic.
Right Tail Test: p-value is the area to the right of the test statistic.
Two Tailed Test: p-value is twice the area bounded by the test statistic
Make a decision to reject or fail to reject the null hypothesis:
Reject if p-value ≤ α
Fail to reject if p-value > α
Hope this help! :)
How did saturn gets its name?
Answer:
Like all of the planets, Saturn is named after a character in Roman mythology. Saturn is named after the god Saturnus, the god of agriculture and harvest. Saturn is equivalent to the ancient Greek god Kronos.
This table shows the weights of four different objects that are sitting on the floor. A person tries to lift each object with a force of 18 N, upward. Which
statement is supported by the data in the table?
Answer:
C. Objects 1 and 2 will not move, and objects 3 and 4 will accelerate upward
Explanation:
I took the test
The bowling ball in the Figure below is whizzing down the bowling lane at 4.0 m/s. If the mass of the bowling ball is 7.0 kg, what is its kinetic energy?
The kinetic energy of the bowling ball is 56 J
What is kinetic energy?Kinetic energy is the energy possessed by an object is motion.
How to determine the kinetic energyFrom the question given above, the following data were obtained:
Velocity (v) = 4 m/sMass (m) = 7 KgKinetic energy (KE) =?KE = ½mv²
KE = ½ × 7 × 4²
KE = 3.5 × 16
KE = 56 J
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There are five different types of muscles in exercise physiology.
A.
True
B.
False
Answer: The answer is B) False
Explanation: There are only three muscle types in the exercise physiology.
Skeletal Muscle
Smooth Muscle
Cardiac Muscle
1. According to Newton's Third Law of motion, what are the two forces that interact called?
Answer:
action and reaction forces
Explanation:
These two forces are called action and reaction forces and are the subject of Newton's third law of motion. Formally stated, Newton's third law is: For every action, there is an equal and opposite reaction. The statement means that in every interaction, there is a pair of forces acting on the two interacting objects.
A capacitor has two parallel plates seperated by 2mm and is connected across a 50V battery. a. What is the electric field between the field? b. What is the surface charge density? c. How much charge is stored on each plate if the area is 0.1m^2. d. Calculate the capicitance e. How much energy is stored in this capacitor?
Answer:
a
[tex]E = 25000 \ V/m[/tex]
b
[tex]\sigma = 2.2125* 10^{-7} \ C/m^2[/tex]
c
[tex]q = 2.2125 *10^{-8} \ C [/tex]
d
[tex]C = 4.425 *10^{-10} \ F[/tex]
e
[tex]U = 5.531 *10^{-7} \ J[/tex]
Explanation:
From the question we are told that
The distance of separation is [tex]d = 2mm = 0.002 \ m[/tex]
The voltage is [tex]V = 50\ V[/tex]
The area is [tex]A =0.1m^2[/tex]
Generally the electric field is mathematically represented as
[tex]E = \frac{V}{d}[/tex]
=> [tex]E = \frac{50}{ 0.002}[/tex]
=> [tex]E = 25000 \ V/m[/tex]
Generally the capacitance mathematically represented is
[tex]C = \frac{\epsilon_o * A }{d}[/tex]
Here [tex]\episilon_o[/tex] is the permitivity of free space with value
[tex]\episilon_o = 8.85 * 10^{-12} C/(V⋅m [/tex]
=> [tex]C = \frac{ 8.85 * 10^{-12} * 0.1 }{0.002}[/tex]
=> [tex]C = 4.425 *10^{-10} \ F[/tex]
Generally the charge is mathematically represented as
[tex]q = C * V[/tex]
[tex]q = 4.425 *10^{-10} *50 [/tex]
=> [tex]q = 2.2125 *10^{-8} \ C [/tex]
Generally the charge density is mathematically represented as
[tex]\sigma = \frac{q}{A}[/tex]
=> [tex]\sigma = \frac{ 2.2125 *10^{-8}}{0.1}[/tex]
=> [tex]\sigma = 2.2125* 10^{-7} \ C/m^2[/tex]
Generally the energy stored in this capacitor is mathematically
[tex]U = \frac{1}{2} * CV^2[/tex]
=> [tex]U = \frac{1}{2} * (4.425 *10^{-10} ) * (50)^2[/tex]
=> [tex]U = 5.531 *10^{-7} \ J[/tex]
what is regular body in physics
Answer:
The definition of a regular shape is that all the sides are equal and all the inside angles are equal. An irregular shape doesn't have equal sides or equal angles.
Explanation:
Hope this helps you
Crown me as brainliest:)
Which of the following are examples of projectile motion?
check all that apply
A. a basketball being shot toward the basket
B. a bowling ball rolling down the lane
C. a dog running along a sidewalk
D. a baseball hit for a home run
Answer: A. a basketball being shot toward the basket
Explanation: The definition of projectile motion is the motion of an object thrown or projected into the air, subject to only the acceleration of gravity. So, the basketball is the object being thrown and the person throwing the ball is aiming it to go into the basket making that the path of trajectory. Hope that makes sense and helps!
if we shake the branches of tree the fruits fall why
Answer:
Explanation:
when a tree is shaken it's fruits and leaves fall down due to the gravitational force exerted by earth.
All fruits and leaves do not fall when tree is shaken, mostly only those fruits and leaves are fallen that are ripped.
It's because their tissues has become weak
(PLEASE HELP ASAP)
In what ways can you determine the number of valence electrons in an atom
using the periodic table? (select all that apply)
The number of valence electrons equals the number in the ones place for groups 3-12
The number of valence electrons equals the number in the ones place for groups 1,2 and 13-18
The number of valence electrons equals the number in the tens place for groups 1,2and 13-18
The number of valence electrons equals the number in front of the "A" for groups 1A-80
Answer:
The valency of atoms can be determined by looking at the groups of the periodic table. Hope this helps!
Explanation:
A person throws a pumpkin at a horizontal speed of 4.0\,\dfrac{\text m}{\text s}4.0 s m 4, point, 0, start fraction, start text, m, end text, divided by, start text, s, end text, end fraction off a cliff. The pumpkin travels 9.5\,\text m9.5m9, point, 5, start text, m, end text horizontally before it hits the ground. We can ignore air resistance.
Answer:
d = 27.522 m
Explanation:
The horizontal speed of a pumpkin, [tex]v_x=4\ m/s[/tex]
The horizontal distance covered by the pumpkin, [tex]d_x=9.5\ m[/tex]
We can assume to find the the pumpkin's vertical displacement during the throw.
Firstly we can find the time of flight for the pumpkin. It can be calculated as follows :
[tex]t=\dfrac{d_x}{v_x}\\\\t=\dfrac{9.5}{4}\\\\t=2.37\ s[/tex]
The vertical displacement during the throw is given by :
[tex]y=u_yt+\dfrac{1}{2}a_yt^2[/tex]
Here, [tex]u_y=0\ \text{and}\ a_y=-g[/tex]
So,
[tex]y=\dfrac{1}{2}gt^2\\\\y=\dfrac{1}{2}\times 9.8\times (2.37)^2\\\\y=27.522\ m[/tex]
So, the vertical displacement of the pumpkin is 27.522 m.
Answer:
-27.6
Explanation:
Khan Academy, bleh
A 22 g particle is moving to the left at 21 m/s . How much net work must be done on the particle to cause it to move to the right at 46 m/s
Answer:
18.425 Joules
Explanation:
To figure this out we can simply use the W=Change in Kinetic Energy,
W = 1/2*.022*46^2-1/2*.022*21^2 (Note we can ignore the direction of the particles as we need to take the square of the velocity)
W=18.425 (By simplifying the expression)
True or false elastic energy is a type of kinetic energy
Answer:
True
Explanation:
The statement "elastic energy is a type of kinetic energy" is absolutely false.
What is Kinetic energy?Kinetic energy may be defined as a type of energy that is typically possessed by an object due to its motion. It is characterized as the work which is required in order to accelerate a body of a given mass from rest to its initiate velocity.
Elastic energy is a type of mechanical potential energy that is kept in reserve in the arrangement of a material or physical system as it is conquered by elastic deformations.
Elastic energy is a type of energy that is occurred when any objects are temporarily compressed, stretched, or typically disfigure in any manner.
Therefore, the statement "elastic energy is a type of kinetic energy" is absolutely false.
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A diver dives off of a raft - what happens to the diver? The raft? How does this relate to Newton's Third Law?
Answer:
Every negative or positive thought and action we make must have an equal and opposite reaction.
Explanation:
A soccer player kicks a ball at rest on the
ground straight up high into the air and
watches it reach its highest point. Which
statement describes the kinetic or
gravitational potential energy of the ball
during the time the player watches the
movement of the ball?
The kinetic energy and gravitational potential energy changes during its movement from ground to the top height.
What happens to kinetic and potential energy while motion?When the ball moves upward, its gravitational potential energy is increases and kinetic energy begins to decrease but when the ball falls towards the earth, its gravitational potential energy is transformed into kinetic energy. When the ball collides with the ground, the kinetic energy is transformed into other forms of energy.
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How does an accretion disk around a neutron star differ from an accretion disk around a white dwarf?.
What is the formula for finding Δt?
Answer:
☆<《HOPE IT WILL HELP YOU 》>☆
Explanation:
The formula for finding TRIANGLE is Half + Base × Hight
H+B×Hplease mark my ans as BRAIN LISTWhich of the following is an example of Newton’s first law of motion?
Sam’s bike hits a curb and he flies over the handlebars, onto the grass.
A feather and a brick are dropped from a ladder. The brick exerts a greater force when it hits the ground.
A person sits on a chair and pushes down, and the chair pushes upwards on the person.
Tires from a car push against the road, and the road pushes back.
Answer:
I think first one
Explanation:
Because his first law of motion was every object will remain at rest or uniform motion in a straight line
Answer:
Sam's bike hits a curb and he flies over the handlebars, onto the grass.
Explanation:
As we know that: Newtons first law of motion states that a body continues to remain in the inertia of rest or motion, unless it is forced to change by applying an unbalanced force. Sam's bike is in uniform motion when suddenly the curb(external force) hits it and makes Sam to fall.
Need the correct answer ASAP
Will give the brainliest !!
#1
Voltage remains constant whole way in circuit so it's voltage#2
Same 9V at all three resistors.
#3
Let's take a look at ohms law
[tex]\\ \rm\Rrightarrow \dfrac{V}{I}=R[/tex]
I is current[tex]\\ \rm\Rrightarrow I\propto \dfrac{1}{R}[/tex]
So if one resistor is taken out resistance becomes less so flow of current becomes moreNet force acting on a 100 kg man standing in an elevator accelerating downward with a = 9. 8m/s^2 comes out to be:(a) 980N(b) 580N(c) 1380N(d) zero
Answer:
(d) zero
Explanation:
Net acceleration = (a - g)
a is downward so it is positive
F(net) = ma(net)
F = 100 x (9.8 - 9.8)
F = 0
The correct option is (d).
If the object's initial velocity is 0 m/s , what is the velocity of an object at t = 8.0s
Answer:
0_8.0
8.0m/s
Explanation:
8.0m/s is the velocity of an object .