Answer:
Explanation:
There are many laws in physics, that started out as theories and became scientific truths only after an experiment was performed that confirmed that the theory was true.
One of the most famous theories was the guess that the gravitational Force was a constant amount that depended on mass and distance. It was incredibly difficult to prove because the with large masses and small distances, the force is quite small.
Newton proposed the existence of the gravitational force in 1687 and Cavendish found its precise truth in 1798 -- 111 years after Newton said it was so.
Newton proposed a theory. Cavendish proved it to be a law later. Even then, Einstein proposed the modern law.
MATHIMATICALY DETERMINE THE RESULTANT FORCE IF TWO FORCES A AND B ACT ON ANOBJECT
FORCE A IS 85N AND IS AT AN ANGLE OF 20 DEGREE TO HOIRZONTZL.FORCE B IS 125N AND IS AT AN ANGLE OF 60 DEGREE TO THE HOIRZONTAL
Explanation:
Just adding up the horizontal and vertical components of both vectors separately.
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]
How far will a car move if it starts from rest, reaches a final speed of 40 m/s, and accelerated at 2 m/s/s?
Answer:
800 m
Explanation:
Acceleration (a) = Velocity (v) / Time(t)
a = (v-u) /t
where, v = final speed
u = initial speed
2m/s² = (40m/s - 0m/s)/t
that is, from rest is no speed.
2m/s² = (40m/s) /t
t = (40m/s)/2m/s²
t = 20 s
hence, the car has accelerated for 20 s.
From,
Velocity (v) = Displacement (d) /time(t)
displacement is the distance the car has travelled.
40m/s = d/20s
d = 40m/s × 20s
d = 800 m
different between seed and grain
Answer:
Hope it helps u
Be happy
Stay healthy
diffrence between UFP&LFP
Answer:
In the formula, 'X' is the temperature value to be converted, 'UFP' is the upper fixed point and 'LFP' is the lower fixed point of the temperature scale
Explanation:
LFP means Lower fixed point and UFP means Upper fixed point. Explanation: There are different scales with different lower fixed point and upper fixed point to measure temperature but the distance between these scales is same in any table or scale considered.
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]
what describes an objects speed and direction
Answer:
Velocity
Explanation:
hope this helps
Answer:
Speed in a given direction is called velocity.
Explanation:
I need chapter one section three
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
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....
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...what is the density of a 75 g block of wood measuring 12 cm x 8cm x 9cm
Answer:
density is equal to mass divided by volume (m/v)
volume: 12×8×9=864cm³
75÷864=0.09
Answer: 0.09g/cm³
Write the values of the 9s in 402,999
Answer:
nine hundred ninety nine
Explanation:
/h/ /t/ /o/
9. 9. 9
Heh I need some more help… imma just put all of them on one question… (•_•) It’s a crossword puzzle by the way!
7) Scientists use their data to make charts and (blank) to communicate the results of an experiment. [ 6 spaces ]
8) After the scientist makes a hypothesis, they perform an (blank) to collect data. [ 10 spaces ]
9) The first step of the scientific method is to define or identify the (blank). [ 7 spaces ]
14) Scientists make (blank) to help them make a hypothesis or collect data during an experiment. [ 12 spaces ]
Please help with the blanks, if you don’t know each answers don’t answer the question thats a waste if space!
ACTUALLY I’LL GIVE YOU A PICTURE AS WE! I hope it will help, so you can see what I am doing. ^v^
Thanks!!
7. Graphs
8. Experiment
9. Problem
14. Observations
**The rest of the points are correct .^_^
I hope I helped you^_^
When is the pressure of the man on the ground more – lying position or standing
position? Explain.
Hi,
The man on the ground in standing position has more pressure. This is because when he stands, only his legs are in contact with the ground. While lying, his body is more in contact with the ground, therefore, he exerts less pressure.
To the point, a man standing position on the ground had more pressure.
More is the area of contact, less is the pressure efforted.
Thank you...
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.
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
#SPJ3
what is simple machine
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
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
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) .
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
The apparent bending of a wave around the edge of an object is called _____. If a wave passes through a slit that has a width of the same order of magnitude as its _____, it will bend around both edges of the slit to give a semicircular wave.
Answer:
Diffraction and Wavelengyh
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:
A stone is dropped from the top of the tower at height h. After 1 second another stone is dropped from balcony 20m below the top.Both reach ground at same time. What us the value of h.
There is a current of 0.24A in a lamp connected to a 240V supply. What is the input power to the lamp?
Answer:
Explanation:
Wattage = E * I
E = 240
I = 0.24
Wattage = 240 * 0.24
Wattage = 57.6
the particles in the nucleus that have a positive charge are the
Answer:Protons
Explanation:
0.098x0.4x280................
Answer:
10.976hope that helps uh..☺
please mark this answer as brainlist
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]