Answer:
1. it is universal means of communicating scientific information
2. meter
3. computer, internet, laboratory, and field
what describes an objects speed and direction
Answer:
Velocity
Explanation:
hope this helps
Answer:
Speed in a given direction is called velocity.
Explanation:
A sprinter runs for 6.45 s at 7.44 m/s. How far does she get?
A. 0.867 m
B. 13.9 m
C. 1.15 m
D. 48.0 m
Answer:
D is the answer
Explanation:
6.45×7.44= 47.98800
Which if we round of we get 48m
Does anyone have any clue on how to do this??
Get serious !
It's (length) • (width) • (height) .
What is the acceleration of the car in initial 2 seconds [ans:20m/s^2
Answer:
[tex]accelaration = \frac{v}{t} \\ = in \: intial2sec \: v = 40 \\ a = \frac{40}{2} = 20 \frac{m}{ {se}^{2} } \\ thank \: you[/tex]
Answer:
20 m/s^2
Explanation:
v = u + at
Velocity:-
u = 0
v2 = 40
v = v2 - u = 40 - 0 = 40
Time:-
t2 = 2
t1 = 0
t = t2 - t1 = 2 - 0 = 2
Substituting v and t in formula,
v = u + at
40 = 0 + (a)(2)
2a = 40
=> a = 40/2
=> a = 20
the density of silver at 0°C is 10310 kg/m^3 and the coefficient of linear expansion is 0.000019/°C . calculate its density at 100°C ?
Explanation:
The relative change in length of the edges of a cube are the coef times the change in temperature.
One meter expands to (1 + coef x 100C) = 1.0019 meter
Divide the mass by this number cubed to correct for volume expansion.
10310 kg / 1.00571 = 10251 kg/m3
If the density of a liquid is 20gcm - 3 height is 4cm and gravitational field strength is 10 N kg, the pressure of the liquid is
Answer:
Pressure is 1.96 × 10^12 Pa
Explanation:
[tex]{ \bf{pressure = \frac{force}{area} }}[/tex]
height = 4 cm = 0.04 m
density = 20 g/cm³ = 20,000 kg/m³
But for force:
[tex]{ \sf{force = mass \times acceleration}} \\ { \sf{force = ( \frac{density}{volume} ) \times acceleration}} \\ \\ { \sf{force = ( \frac{20000 }{0.04 {}^{3} }) \times 10 }} \\ \\ { \sf{force = 3.13 \times {10}^{9} \: newtons}}[/tex]
For area:
[tex]{ \sf{area = 0.04 \times 0.04 = 0.0016 \: m {}^{2} }}[/tex]
[tex] { \tt{pressure = \frac{3.13 \times {10}^{9} }{0.0016} }} \\ \\ = { \tt{1.96 \times {10}^{12} \: pascals}}[/tex]
You have 50L of water, it froze. So find its new volume. Density of water is 1000kg/m^3 or 1kg/L, density of ice is 920kg/m^3 or 0.92kg/L.
Answer:
D (density) = Mass / Volume
V (ice) = Mass / Density = 50000 g / .92 kg / L
V = 50 kg / .92 kg / L
1 Liter of water weighs 1 kilogram = 50 L weighs 50000 g
V = 54.3 L the mass does not change upon the change of phase (freezing)
PLS, HELP WILL GIVE BRAINLIEST TO WHOEVER ANSWERS FIRST Think back to what you read about golf, volleyball, and tennis.
Which of these sports do you think you would be best able to play?
Why do you think so?
Which sport do you think you would have the toughest time playing?
Why do you think this is so?
golf, because I can aim at anything!
tennis because I'm not the best viewer. that is so fast and I won't be able to respond to the shot so fast
I need chapter one section three
Use the list to answer the question.
potassium, Group 1
calcium, Group 2
iodine, Group 17
neon, Group 18
Which two elements in the list would bond together based on their ionic charges?(1 point)
potassium and neon
potassium and iodine
calcium and neon
calcium and potassium
Answer:
potassium and iodine
Explanation:
An ambulance is currently traveling at 15m/s, and is accelerating with a constant acceleration of 5 m/s^2. The ambulance is attempting to pass a car that is moving at a constant velocity of 30m/s. How far must the ambulance travel until it matches the car’s velocity?
Using 3rd equation of kinematics
[tex]\\ \rm\longmapsto v^2-u^2=2as[/tex]
[tex]\\ \rm\longmapsto s=\dfrac{v^2-u^2}{2a}[/tex]
[tex]\\ \rm\longmapsto s=\dfrac{30^2-15^2}{2(5)}[/tex]
[tex]\\ \rm\longmapsto s=\dfrac{900-225}{10}[/tex]
[tex]\\ \rm\longmapsto s=\dfrac{675}{10}[/tex]
[tex]\\ \rm\longmapsto s=67.5m[/tex]
a 4,000 kilogram rocket has accelerates at a rate of 35 m/s2. How much force is required to do this?
[tex]\Large{\underline{\sf Given:-}}[/tex]
Mass=4000kgAcceleration=35m/s^2[tex]\Large{\underline{\sf To\:Find:-}}[/tex]
Force[tex]\Large{\underline{\sf Formula:-}}[/tex]
[tex]\boxed{\sf Force=Mass\times Acceleration}[/tex]
[tex]\Large{\underline{\sf Solution:-}}[/tex]
[tex]\\ \sf\longmapsto Force=4000(35)[/tex]
[tex]\\ \sf\longmapsto Force=14000N[/tex]
If a taxi cab travels 45.8 m/s for 146 s, how far did it travel?
Your Answer:
Answer:
6.68 km
Explanation:
distance = speedxtime
45.8 x 146
6686.6 m
How many significant figures are in each number?
.0054
78.0
09002
.993
Answer:
0.0054 » two significant figures.
78.0 » three significant figures.
0.09002 » four significant figures.
0.993 » three significant figures.
Explanation:
[tex].[/tex]
An element has six valence electrons. Which ionic charge will its ion carry?(1 point)
2–
2+
6+
6–
Answer:
It's 2–
Explanation:
Usually, in ionic bonds, these elements will receive 2 electrons, so its ion will carry a 2– charge
The ionic charge its ion will carry will be 2-
An element is required to have 8 electrons in its outermost shell to assume it's full octet configuration.
The statement above of course excludes Hydrogen and helium which have only 1 and 2 electrons respectively.
An element with 6 Valence electrons would require 2 electrons to assume the full octet configuration.
As such, it is liable to accept 2 electrons from an electropositive element or group of elements to complete it's octet.
Therefore, accepting 2 electrons adds 2 negative charges and consequently, the ionic form of the element carries a 2- ionic charge
Read more:
https://brainly.com/question/13822373
What happens to the weight of an object when it is taken from Earth to the Moon? why ?
Answer:
So, if a body is taken to moon, the moon attracts the body with a force less as compared to the attraction force by the earth. Hence the weight decreases.
Explanation:
Hopefully it is helpful...write the value of g on the moon and Jupiter
Answer:
The value of g on the moon is 1.625 m/s2 and the value of the g on the jupiter is 2.528g.
Jupiter's surface gravity is 24.79/s or 2.528 g .
The acceleration due to gravity on the surface of the moon is approximately 1.625m/s .
hope this helps you
mrk me braniliest plzz
Forgot how to do this please help
Answer:
213K = 100. 56
189K = 87. 22
113K = 45
201K = 93. 88
Explanation:
The formula for F to C = ( 1. 8*C) + 32
So, C = (F - 32) ÷ C
The force of gravity on the moon is only 16.6% the force of gravity on Earth. For each item listed in the table below, fill in what its weight would be on the moon?
==> Take an Earth weight. Don't forget the unit.
==> Multiply it by 0.166 .
==> The product is its Moon weight. Don't forget the unit.
Example:
If I weigh 1,000 lbs on Earth.
Multiply 1,000 lbs by 0.166 .
I weigh 166 lbs on the Moon
The complete table is as follows -
ITEM W(E) W(M)
Apple 150 g 25 g
Hammer 1.5 lbs 0.25 lbs
Person 180 lbs 30 lbs
Blue whale 200 tons 33.3 tons
We have the force of gravity on the moon is only 16.6% the force of gravity on Earth.
We have to fill the table given in the question.
Define Gravity in Physics.In physics, gravity is a fundamental interaction which causes mutual attraction between all things with mass or energy. The gravitational force between two bodies of mass 'm' and 'M' separated by a distance 'r' apart is given by -
[tex]$F = \frac{GMm}{r^{2} }[/tex]
According to the question, we have -
Force of gravity on the moon is only 16.6% the force of gravity on Earth.
This means that for an object of mass 'm' -
F(M) = 16.6% of F(E)
This means that a person would weigh six times less on the moon than they do on Earth -
W(moon) = [tex]\frac{1}{6}[/tex] W(earth)
Let's complete the table -
ITEM W(E) W(M)
Apple 150 g 1/6 x 150 = 25 g
Hammer 1.5 lbs 1/6 x 1.5 = 0.25 lbs
Person 180 lbs 1/6 x 180 = 30 lbs
Blue whale 200 tons 1/6 x 200 = 33.3 tons
Hence, the complete table is given above.
To learn more about Gravity on moon, visit the link below -
https://brainly.com/question/20045391
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Which statement describes the distribution of charge in an atom?
O A neutral nucleus is surrounded by one or more negatively charged electrons.
O A positively charged nucleus is surrounded by one or more negatively charged electrons.
O A neutral nucleus is surrounded by one or more positively charged electrons.
O A positively charged nucleus is surrounded by one or more positively charged electrons.
Answer:
hope this helps
Explanation:
one in which a positively charged nucleus is surrounded by one or more negatively charged electrons.
Circle the letter of each sentence that is a scientific question
a. At what temperature does water boil?
b. When does the sun rise on April 3?
c. How can my team work better together?
d. Why does she like science more than he does?
Answer:
a - temperature
b sun ( how things work science)
Answer:
(A)
Explanation:
because they are asking at temperature does water boil they can do experaments to find or they can use science
What will be the gravitational force between the bodies if the mass of each is doubled and the distance between them is halved?
Explanation:
if the mass of both of the objects is doubled, then the force of gravity between them is quadrupled; and so on.
PLZ HELP WILGIVE BRAINIEST!Read the false statement.
Each atom within a specific element has the same number of neutrons, which determines its atomic number.
Reword the statement so it is true.
Each atom within a specific element has the same number of protons, which determines its atomic number. The correct statement.
This is inaccurate because the atomic number of an element is determined by the number of protons in the nucleus of its atoms, not by the number of neutrons.
Each atom within a specific element has the same number of protons, which determines its atomic number. The atomic number of an element is a fundamental property that defines the element and its place on the periodic table.
The number of protons in the nucleus of an atom of that element. Neutrons, do affect the atom's mass and stability but do not determine their atomic number.
The correct statement is Each atom within a specific element has the same number of protons, which determines its atomic number.
To know more about neutron and proton:
https://brainly.com/question/29771588
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If a person walks forwards five meters but then moves back one meter,
what is their displacement?
Answer:
4
Explanation:
because when u have 5 then take 1 away u have 4
on the way to school the bus speeds from 20 m/s to 36 m/s in 4 seconds. what distance does the bus cover in this time frame
Answer:
d=s
t
d=36
4
d=10m/s
Explanation:
distance is equal to speed over t therefore 36 divide by 4 is 10
The larger the number of charges flowing through the wire, the larger is the ____________ flowing in the wire.
Answer:
The larger the number of charges flowing through the wire,the larger is the current flowing in the wire.
Explanation:
if the wire is large then large amount of current flows through the circuit.but if the wire is small then a smaller amount of current will pass through.
I hope this helps
PLEASE HELP DUE IN ALMOST AN HOUR PLEASE
Answer:
Below
Explanation:
4. You can use this formula to calculate the acceleration of an object
acceleration = velocity / elapsed time
Plugging our values in....
acceleration = 1700 m/s / 25 s
= 68 m/s^2
5. You can use this formula to calculate the final velocity of an object
finalvelocity = initialvelocity + (acceleration) (time)
Plugging our values in....
finalvelocity = 1.5 m/s + (2.4 m/s^2) ( 3 seconds)
= 8.7 m/s
Hope this helps! Best of luck <3
what will happen to the gravitational force between two bodies if the distance between them is halved keeping their masses constant
help me
Answer:
if the distance between them is halved then gravitational force will be doubled....
A car starting from rest accelerated at a rate of 0 .5 m/s up to 2 km what would be the final velocity of the car and how much time would it take to cover 1.6
Using third equation of kinematics
[tex]\\ \rm\longmapsto v^2=u^2+2as[/tex]
[tex]\\ \rm\longmapsto v^2=0^2+2(0.5)(1.6)[/tex]
[tex]\\ \rm\longmapsto v^2=1.6[/tex]
[tex]\\ \rm\longmapsto v=\sqrt{1.6}[/tex]
[tex]\\ \rm\longmapsto v=0.4m/s[/tex]
Now using 1st equation of motion
[tex]\\ \rm\longmapsto v=u+at[/tex]
[tex]\\ \rm\longmapsto t=v-u/a[/tex]
[tex]\\ \rm\longmapsto t=\dfrac{0.4-0}{0.5}[/tex]
[tex]\\ \rm\longmapsto t=\dfrac{4}{5}[/tex]
[tex]\\ \rm\longmapsto t=0.8s[/tex]
Answer:
Using third equation of kinematics
[tex]\begin{gathered}\\ \rm\longmapsto v^2=u^2+2as\end{gathered}[/tex]
⟼v
2
=u
2
+2as
[tex]\begin{gathered}\\ \rm\longmapsto v^2=0^2+2(0.5)(1.6)\end{gathered}[/tex]
⟼v
2
=0
2
+2(0.5)(1.6)
Write the values of the 9s in 402,999
Answer:
nine hundred ninety nine
Explanation:
/h/ /t/ /o/
9. 9. 9