TRUE OR FALSE. For exponential growths, the growth in any doubling time is greater than the sum total of growth in all preceding doubling times
Answer:
False.
Explanation:
Doubling time is the amount time it takes for a population to double in size or quantity.
When the relative growth rate is constant, the population is undergoing exponential growth and the growth rate Is constant.
Exponential growth doubling time can be calculated using rule 70
Which is
Dt=70/r
R is rate.
Name three types of energy that exist in a large piece of charcoal on a grill in the sunlight. Explain why the charcoal has each type of energy.
Answer:
* thermal energy
potential energy,
potential energy
Explanation:
The ship has various types of energy,
* thermal energy. This energy is associated with the temperature of the coal, the hotter the greater its internal energy,
* potential energy this energy is stored in the constituent atoms within carbon
* potential energy. It is due to the configuration of the system, in this case the sun heats the coal
What numbers are significant in 405kg
Answer:
All
Explanation:
I assume you mean how many sigs figs/which are sig figs. If that is what you meant then it is all of them.
12 g … _____________________kilograms
Answer:
0.012
Explanation:
The __ variable is sometimes called the “manipulative ” because
Answer:
Independent.
Explanation: The Independent variable is sometimes called the "manipulative" because it refers to a quantity that is changed by the experimenter.
I need help? Please
Answer:
Three examples of insulators would be metals, graphite, and the human body. Examples of insulators include plastics, rubber and glass. Lastly, a few examples of semiconductors would be silicon, germanium and gallium arsenide.
URGENT! PLEASE ANSWER!!
Which vector correctly indicates the direction of centripetal acceleration experienced by the car?
A ( is not correct!!)
B
C
D
Answer:
C
Explanation:
The answer is obvious from the given figure
Answer:
c
Explanation:
for 100% your welcome(:
PLS HELP!!! The quarter back runs 75 meters down a football field in 12 seconds to score a touchdown. How fast did he run? A. 0.2m/s B. 6 m/s C. 26 m/s D. 87 m/s
Answer:
B.6
Explanation:
speed = distance / time
= 75m / 12s
= 6.25 m/s
The closest answer is b. 6 m/s
heart plz
A child observes a caterpillar walking on a window sill. The caterpillar walks 18 cm to the left, then 6 cm to
the right, then 10 cm to the left.
a. What is the total distance walked by the caterpillar?
Answer: 34 cm
Explanation:
18+6+10=34 cm
7. How long would it take for you to reach the cafeteria, which is 100 m away, if
you were running at a speed of 20 m/s?
Time = distance / speed
Time = 100m / 20 m/s
Time = 5 seconds
But trust me ... You're not running at 20m/s.
what is the SI unit of a force
Answer:
The So unit of force is the newton,symbol N. the base units relevant to force.
Answer
the SI unit of force is newton
I am the negatively charged particle that determines the reactivity of any element. Give my name?
plz help me
Answer:
An electron.
Explanation:
+
- n n -
+
+ = Protons
n = neutrons
- = electrons
a rectangular block weighs 240N. The area of the block in contact with the floor is 20cm2 calculate the pressure on the floor
Answer:
The pressure on the floor is 12 Pascal(Pa).
Explanation:
Given,
Force (F) = 240N
Area (A) = 20 cm^2
Pressure (P) = ?
we know that,
P = F/A
= 240/ 20
= 12 Pa
21) Y=2+3 solve for y
Answer:
This must be harder than it appears or I'm missing something, but as far as I know y=5
Explanation:
Convertir 4.5 hr a min
Answer: 4.5 hours to a minutes would be 270 minutes. I hope this helped you god bless you and have a great day :D
Answer: 270 min
Explanation: 1 hour = 60 minute. Just multiply 60 by 4 and you get 240 and then just add 30 since it’s .5 which is half.
the unit of pressure is derived unit, why?
Answer:
I hope you understand it.
I had presented answer very clearly would you mark brainliest
Which quantity is a vector quantity A. Acceleration B. Mass C. Speed D. Volume
Answer:
Acceleration
Explanation:
A vector quantity has a magnitude and direction. Mass, Speed and Volume are all scalar quantities because they only have magnitude, and not direction.
If a car has an initial velocity of 20 m/s and accelerates at 2.0 m/s2 for 100 m, what is its final velocity?
Answer:
28.28 ms-1
Explanation:
v² = u² + 2as
v² = 20² + 2×2×100
v²= 800
v = 28.28 ms-1
what is the difference between speed and volocity?
Which component of health-related fitness is developed by performing a wall sit?
A, Body composition
B, Muscular endurance
C, Reaction time
D, Coordination
Answer:
The answer is Muscular endurance
Explanation:
It is this because your seeing how long your muscles can with stand. I answered by guessing lol.
PLS HELP ANSWER QUICK
An astronaut sets off on a space mission to visit The Moon and Mars. When leaving Earth she weighed herself on a set of scales, and she weighed 70kg. When she was on Mars she weighed herself again and it read 26.3kg. When she got back to Earth she weighed herself again, and it read 70kg. Why was there a difference when she was on Mars?
Tommy runs around a track whose circumference is 400 meters. He runs a single lap in a time of 62 seconds. What is Tommy’s displacement
Answer:
Angular Displacement 6.28 radiansExplanation:
for circular motion we are expected to solve for Angular Displacement it is measured in radian
Measurement of Angular Displacement.
we can measure it using the following relation
∅= s/r
where
s = the distance travelled by the body, and
r = radius of the circle along which it is moving.
given that
circumference c, s= 400 m
r= ?
we have to solve for the radius
we know that circumference
[tex]c= 2\pi r[/tex]
400= 2*3.142*r
400= 6.282*r
divide both sides by 6.284 we have
400/6.284
r= 63.63 m
Angular displcament
∅= 400/63.63
∅= 6.28 radians
What is the meaning of life
Answer:
The meaning of life, or the answer to the question: "What is the meaning of life?", pertains to the significance of living or existence in general. Many other related questions include: "Why are we here?", "What is life all about?", or "What is the purpose of existence?"
Explain how the velocity of an object changes in respect to time.
Answer:
Is this your ans of this question
Answer:
The rate of change in the velocity of an object per unit time is referred as acceleration and the kind of motion is known as accelerated motion. The acceleration is positive when it is in the direction of velocity and negative when it is opposite to the direction of velocity.
Explanation:
HOPE YOU UNDERSTAND
A mountain slope and a skier make up a closed system with 21,800 J J of energy. When the skier starts her descent down the mountain, the mechanical energy of the system is 19,500 J. By the time she reaches the bottom, the system's mechanical energy has fallen to 18,230 J. How much of the total energy is transformed into thermal energy?
A. 2,300 J
B. 3,570 J
C. 20,530 J
D. 1,270 J
Answer: 1,270 J
Explanation: APEX
Answer: 1,270 J
Explanation:
Just did it!!
A train travels at a speed of 30 m/s. The train starts at an initial position of 1000 meters and travels for 30 seconds. What is its final position?
Answer:
1900 meters
Explanation:
30 * 30=900
900+1000=1900
multiply the speed by the time
add the initial speed
What trend does the reactivity of nonmetals show in a periodic table? a) random changes without any trends on the periodic table b) changes according to trends on the periodic table c) increases from left to right across the periodic table d) decreases from left to right across the periodic table
Answer:
The answer is C. increases from left to right across the periodic table
Explanation:
I took the test
The reactivity increases as we move from left to right in the nonmetals sector of the periodic table. For instance, phosphorus is less reactive than chlorine. The reactivity does, however, diminish as we descend a column of nonmetals.
What reactivity of nonmetals show in a periodic table?Across a period, responsiveness declines as you move from left to right. Higher reactivity results from simpler electron transfer or removal as you move further to the left and down the periodic chart.
The reactivity of non-metals decreases as we move down a group. This is due to: An increase in the quantity of valence shells. The nucleus can no longer hold the electrons with the same force.
Therefore, In a period, the reactivity of non-metals rises from left to right; however, as we move down a group, the reactivity falls down because the tendency to take electrons declines.
Learn more about periodic table's here:
https://brainly.com/question/11155928
#SPJ2
A car goes from 15 m/s to 25 m/s in 10 seconds. Calculate the
acceleration of the car during this time.
Answer:
1 ms-²
Explanation:
v = u + at
25 = 15 + a× 10
a= 1ms-²
What is the net force exerted by these two charges on a third charge q3 = 54.5 nC placed between nC and nC at x3 = -1.145 m ? Your answer may be positive or negative, depending on the direction of the force.
Answer:
[tex]-4.74*10^{-5}\ N[/tex]
Explanation:
Consider two point charges located on the x axis: one charge, q1 = -19.5 nC , is located at x1 = -1.670 m ; the second charge, q2 = 34.0 nC , is at the origin (x=0).
Given that:
q1 = -19.5 nC , x1 = -1.670 m, q2 = 34.0 nC , x2=0, q3 = 54.5 nC, x3 = -1.145 m
From Coloumbs law, the force between two charges is given by the formula:
[tex]F=k\frac{q_1q_2}{d^2}\\ \\Where\ k=\frac{1}{4\pi \epsilon_o}=9*10^9\ Nm^2/C^2 ,\epsilon_o=8.854*10^{-12}\ C^2/Nm^2\\d=distance\ between\ charges[/tex]
Hence the force of attraction of q1 on q3 is given by:
[tex]F_{13}=k\frac{|q_1q_3|}{(x_3-x_1)^2}=9*10^9(\frac{|-19.5*10^{-9}*54.5*10^{-9}|}{(-1.145-(-1.670))^2} )=3.47*10^{-5}\ N[/tex]
Hence the force of attraction of q2 on q3 is given by:
[tex]F_{23}=k\frac{|q_2q_3|}{(x_3-x_2)^2}=9*10^9(\frac{|34*10^{-9}*54.5*10^{-9}|}{(-1.145-0)^2} )=1.27*10^{-5}\ N[/tex]
The force of attraction of q1 on q3 is in the negative direction and force of attraction of q2 on q3 is in the negative direction. Hence the net force is:
[tex]F_{NET}=-F_{13}+(-F{23})=-3.47*10^{-5}-1.27*10^{-5}= -4.74*10^{-5}\ N[/tex]
Skid Marx set the world record for acceleration as he went from zero to 10 m/s in 3 seconds. How far did he travel in that time?
Answer:
12000 miles per hour
Explanation:
If skid Marx went from zero to 10 miles in 3 seconds the his speed would have been 12000 miles per hour.
