Answer:
789 kg/m³
Explanation:
Explanation:
The density of alcohol is 800 Kg/m^3 .
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.
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
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 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 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.
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:
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!!
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.
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
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
An egg is dropped from a building that is 61 m high. What is the velocity when it hits the ground and how long did it take?
Answer:
the velocity is 10.6m/s
the time taken is 1.5sec
Explanation:
height (h)=61m
from,
[tex] {v}^{2} = 2gh[/tex]
v^2 = 2 (10)(61)
v^2 = 1220
v^2 = 10.6m/s
for time
[tex]v = \frac{1}{2} g {t}^{2} [/tex]
v=10.6
10.6=1×10t^2/2
10.6=5t^2
10.6/5=5t^2/5
t^2=2.12
t=1.5sec
mark me as brainliest pllyyzz
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.
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 if your outgoing,fun,kind,and a bit loud and ppl still don't what to be your friend? What am I doing wrong?
Answer:
Maybe you're hanging out around the wrong crowd. The people you are probably choosing to be around are more quiet then you.
Explanation:
What is good people?
Answer:
a good person is somebody who is not bad who is good nice good humanity
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
12 g … _____________________kilograms
Answer:
0.012
Explanation:
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.
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.
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
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
A water-balloon launcher with a mass of 1.75 kg is suspended on a wire. It fires a 1.25 kg balloon to the east at a velocity of 12.0 m/s. What is the resulting velocity of the launcher if the net force on the launcher is equal to the reaction force? O A. 6.1 m/s east B. 16.8 m/s west C. 7.6 m/s west D. 8.6 m/s west
Answer:
8.6 to west
Explanation:
The initial momentum of the system is given by the sum of the momentum of the launcher and the momentum of the balloon. The correct answer is option C. 7.6 m/s west.
To solve this problem, we can apply the principle of conservation of momentum. According to this principle, the total momentum before an event is equal to the total momentum after the event, assuming no external forces act on the system.
The momentum of an object is calculated by multiplying its mass by its velocity.
Initial momentum = (mass of launcher × velocity of launcher) + (mass of balloon × velocity of balloon)
Let's substitute the given values into the equation:
Initial momentum:
[tex](1.75 kg * 0 m/s) + (1.25 kg * 12.0 m/s)[/tex]
Initial momentum = 15 kg·m/s
Since the net force on the launcher is equal to the reaction force, we can assume no external forces act on the system. Therefore, the total momentum before firing the balloon is equal to the total momentum after firing the balloon.
Final momentum = (mass of launcher + mass of balloon) × final velocity of the launcher
Let's solve for the final velocity of the launcher:
Final momentum:
[tex](1.75 kg + 1.25 kg)[/tex] × Final velocity of the launcher
15 kg·m/s = 3 kg × final velocity of the launcher
Dividing both sides of the equation by 3 kg gives us:
The final velocity of the launcher = 15 kg·m/s / 3 kg
The final velocity of the launcher = 5 m/s
Since the initial velocity of the balloon is to the east, the final velocity of the launcher will be to the west. Therefore, the correct answer is option C. 7.6 m/s west.
For more details regarding initial momentum, visit:
https://brainly.com/question/12450698
#SPJ2
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.
the unit of pressure is derived unit, why?
Answer:
I hope you understand it.
I had presented answer very clearly would you mark brainliest
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(:
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]
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.
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?
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?"
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
