Answer:
[tex] \boxed{ \bold{ \sf{Reference \: point}}}[/tex]
A place or object used for comparison to determine if something is in motion is called a reference point .
✎ Explanation :
A reference point can be defined as a fixed point / place / object from which we compare the motion of an object. For example :
When we are travelling by bus , we are in motion with respect to a nearby tree. Here , the tree acts as a reference point or reference frame.Hope I helped!
Have a wonderful time ツ
▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁
please help!!!!!!!!!!
Answer:
D
Explanation:
Are the small sized gears only force, speed and distance, only speed
PLEASE HELP!! ILL MARK BRAINLYEST!!
MORE THAN ONE
When an acid and a base are mixed, the excess ions:
A. combine to form water
B. increase
C. decrease
D. neutralize each other
Answer:
decrease and neutralize each other
Explanation:
A car’s brakes decelerate it at a rate of -1.60 m/s2. If the car is originally travelling at 15 m/s and comes to a stop, then how far, in meters, will the car travel during that time?
The S.T.O.P strategy is useful for situations involving negative peer pressure
A: True
B: False
Answer:
(A.) it is true
Explanation:
the stop strategy
1. State the situation or problem.
2.Tell the person what you want.
3.Offer an opportunity to respond.
4.Provide closure (review, summary, or thanks).
could help you explain the situation to your peer
car sitting on a drive way is that an kinetic or potential energy
Answer:
kinetic energy..........
Earth is 1.5 ✕ 1011 m from the Sun. Neptune is 4.5 ✕ 1012 m from the Sun. How does the gravitational field of the Sun on Neptune (gSN) compare to the gravitational field of the Sun on Earth (gSE)?
Answer:
The gravitational field of the Sun on Earth is greater than the gravitational field of the Sun on Neptune.
Explanation:
From Newton's law of universal gravitation,
F = [tex]\frac{GMm}{R^{2} }[/tex] ............. 1
where F is the force, G is the gravitational constant, M is the mass of the bigger object, m is the mass of the smaller object and R is the distance between their centers.
Also, Newton's second law of motion state;
F = mg ................ 2
where F is the force, m is the mass and g is the gravitational force.
Equating 1 and 2,
mg = [tex]\frac{GMm}{R^{2} }[/tex]
⇒ g = [tex]\frac{GM}{R^{2} }[/tex]
Given that the distance between the Sun and Earth is 1.5 x [tex]10^{11}[/tex] m, then the gravitational field of the Sun on Earth,
gSE = [tex]\frac{GM}{(1.5*10^{11}) ^{2} }[/tex]
= [tex]\frac{GM}{2.25*10^{22} }[/tex] .................. 3
Given that the distance between the Sun and Neptune is 4.5 x [tex]10^{12}[/tex] m, then the gravitational field of the Sun on Neptune,
gSN = [tex]\frac{GM}{(4.5*10^{12}) ^{2} }[/tex]
= [tex]\frac{GM}{2.025*10^{25} }[/tex] ............. 4
Comparing equations 3 and 4, it can be observed that gSE > gSN.
The gravitational field of the Sun on Earth is greater than the gravitational field of the Sun on Neptune.
* THE ANSWER IS D * Silicon (chemical symbol Si) is located in Group 14, Period 3. Which is silicon most likely
to be?
A. Soft, shiny, highly reactive metal
B. Soft, shiny, highly reactive nonmetal
C. Gaseous, highly reactive nonmetal
D. Metalloid with properties of both metals and nonmetals
Answer:
Hank u so much out don't know how much this rally
Explanation:
Silicon most likely a metalloid with properties of both metals and nonmetals. So, the correct option is D.
What is meant by metalloid ?A metalloid is defined as a substance having the properties which is intermediate between that of both metals and non-metals.
Here,
Silicon is classified as a metalloid, because it exhibits the properties of both metals and non-metals.
Silicon or Si is an element that is belonging to the group 14 and period 3 of the periodic table.
Silicon is not highly reactive, it reacts very mildly. It is a crystalline solid and is hard and and brittle. Silicon has a blue-grey metallic luster.
Silicon consists of only 4 valence electrons. Therefore, it can either accept or donate electrons in order to complete the octet.
Therefore, it is called as a metalloid.
Hence,
Silicon most likely a metalloid with properties of both metals and nonmetals.
To learn more about metalloid, click:
https://brainly.com/question/2548493
#SPJ5
Kepler-186f is an exoplanet that orbits a star other than the Sun. Its star is the red dwarf Kepler-186. It is the first planet to be discovered that orbits its star at a distance like Earth’s distance from the Sun. If Kepler-186f is approximately 5.4 x 1010 meters from Kepler-186, how long does it take for light from the star to reach the exoplanet? The speed of light is 3.0 x 108 m/s. It takes 3 minutes
Answer:
t = 180 s = 3 minutes
Explanation:
The formula for the uniform speed of any object or element is given as:
V = S/t
t = S/V
where,
S = Distance between star and exoplanet = 5.4 x 10¹⁰ m
V = Speed of the light = 3 x 10⁸ m/s
Therefore, using these values in the equation, we get:
t = (5.4 x 10¹⁰ m)/(3 x 10⁸ m/s)
t = 180 s = 3 minutes
Hence, the light must reach the exoplanet in 3 minutes.
A rocket has a mass of 80,000 kg and accelerates at a rate of 35 m/s2. Calculate the force that provides this acceleration.
The amount of force that provides an acceleration of 35m/s² with a mass of 80,000kg is 2,800,000N.
HOW TO CALCULATE FORCE:
The force applied on an object can be calculated by multiplying the mass of the object by its acceleration. That is;Force (N) = mass (kg) × acceleration (m/s²)According to this question, a rocket has a mass of 80,000 kg and accelerates at a rate of 35 m/s². The force can be calculated as follows:F = 80,000kg × 35m/s²F = 2,800,000NTherefore, the amount of force that provides an acceleration of 35m/s² with a mass of 80,000kg is 2,800,000N.Learn more at: https://brainly.com/question/20207503?referrer=searchResults
What is the velocity of a wave that has a wavelength of 20 meters and frequency of 0.5
Hz?
Answer:
v = 10 m/s
Explanation:
recall that velocity is related to wavelength and frequency by the formula
v = fλ
where v = velocity, f = frequency and λ= wavelength
Simply substitute these into the formula:
v = fλ
v = (0.5)(20)
v = 10 m/s
(AKS 3al) Which graph best represents a moving object in a state of equilibrium
Graph 1
Graph 3
Graph 2
Graph 4
A. Graph 4
o
B. Graph 2
O C. Graph 3
D. Graph 1
If a Ferrari, with an initial velocity of 14m/s, accelerates at a rate of 60
m/s^2 for 4 seconds, what will its final velocity be?*
Answer:
254
Explanation:
use the formula "final Velocity- initial velocity / time = acceleration"
so "X - 14 /4 = 60"
60 x 4 = X - 14
240 +14 = X
X = 254
Answer:
Explanation:Explanation:
describe how you would see the apple in the dark.
What is the gravitational constant g?
Answer: In SI units, G has the value 6.67 × 10-11 Newtons kg-2 m2. The direction of the force is in a straight line between the two bodies and is attractive. Thus, an apple falls from a tree because it feels the gravitational force of the Earth and is therefore subject to “gravity”.
Explanation:
This equation shows the reaction that occurs when calcium carbonate
decomposes. what type of reaction is it? CaCO3 + energy – CaO + CO2
a. endothermic
b. synthesis
c. replacement
d. exothermic
ADD ANSWER
+6 PTS
Answer:
a. endothermic
Explanation:
The reaction shown is an endothermic reaction. In such reaction, they require an input of energy.
Endothermic changes involves absorption of heat from the surrounding. The surrounding becomes colder at the end of the reaction. When heat is on the reactant side, it suggests a reaction that requires a considerable input of energy.8) A block of lead has dimensions of 4.50 cm by 5.20 cm by 6.00 cm. The block weighs 1587 g. From this information, calculate the density of lead.
9) 28.5 g of iron shot is added to a graduated cylinder containing 45.50 mL of water. The water level rises to the 49.10 mL mark, from this information, calculate the density of iron.
10) What volume of silver metal will weigh exactly 2500.0 g. The density of silver is 10.5 g/cm3.
Answer:
[tex]11.3\ \text{g/cm}^3[/tex]
[tex]7.92\ \text{g/cm}^3[/tex]
[tex]238.1\ \text{cm}^3[/tex]
Explanation:
8) Volume of lead
[tex]V=4.5\times 5.2\times 6\\\Rightarrow V=140.4\ \text{cm}^3[/tex]
m = Mass of block = 1587 g
Density is given by
[tex]\rho=\dfrac{m}{V}\\\Rightarrow \rho=\dfrac{1587}{140.4}\\\Rightarrow \rho=11.3\ \text{g/cm}^3[/tex]
Density of lead is [tex]11.3\ \text{g/cm}^3[/tex]
9) Volume of lead = Volume of water displaced = (49.1-45.5) = 3.6 mL = [tex]3.6\ \text{cm}^3[/tex]
m = Mass of iron = 28.5 g
Density is given by
[tex]\rho=\dfrac{m}{V}\\\Rightarrow \rho=\dfrac{28.5}{3.6}\\\Rightarrow \rho=7.92\ \text{g/cm}^3[/tex]
The density of iron is [tex]7.92\ \text{g/cm}^3[/tex]
10) m = Mass of silver = 2500 g
[tex]\rho[/tex] = Density of silver = [tex]10.5\ \text{g/cm}^3[/tex]
Volume is given by
[tex]V=\dfrac{m}{\rho}\\\Rightarrow V=\dfrac{2500}{10.5}\\\Rightarrow V=238.1\ \text{cm}^3[/tex]
The volume of silver is [tex]238.1\ \text{cm}^3[/tex]
Which one has greater potential energy? An 8 kg rock sitting on a 2.2 m cliff or a 6 kg rock sitting on a 3.2 m cliff.
Answer: The 6 kg rock sitting on a 3.2 m cliff.
Explanation:
The potential energy of an object of mass M that is at a height H above the ground us:
U = M*H*g
where g is the gravitational acceleration:
g = 9.8m/s^2
Then:
"An 8 kg rock sitting on a 2.2 m cliff"
M = 8kg
H = 2.2m
U = 8kg*2.2m*9.8 m/s^2 = 172.48 J
"a 6 kg rock sitting on a 3.2 m cliff"
M = 6kg
H = 3.2m
U = 6kg*3.2m*9.8m/s^2 = 188.16 J
You can see that the 6kg rock on a 3.2m cliff has a larger potential energy.
3 points
14. Even though the water in a filled bathtub may be at the same
temperature as water in a teacup, the water in the bathtub has more
because it contains a greater number of water
molecules.
Choose
convection
kinetic energy
thermal energy
potential
temperature
Page 3 of 4
Answer:
Potential
Explanation:
The water in the bathtub has more potential energy than that in the tea cup because it has a greater number of water molecules.
Mass is a parameter that is very instrumental in determining potential energy.
The potential energy of a body is the energy due to the position of that body.
Potential energy = mass x acceleration due gravity x height
Mass is the amount of matter in a substance. Water in the tub will have more mass and contain a greater number of water molecules there in.
Since potential energy is directly proportional to mass, then, it will have a greater amount of potential energy.
How does warming ocean relate to climate change?
Bacchae when the water is warm it will evaporate and rain
it will lead to
icl melting
change in climate
change in temperature
change in weather
Answer:
As greenhouse gases trap more energy from the sun, the oceans are absorbing more heat, resulting in an increase in sea surface temperatures and rising sea level. Changes in ocean temperatures and currents brought about by climate change will lead to alterations in climate patterns around the world.
Scientists say. "Lightning storms are caused due to friction
Answer:
Explanation:
I am assuming your question is "How are lightning storms caused?"
When tiny ice droplets bump into each-other while falling from the sky build up electricity and the cloud fills up with electrical charges. The lighter positevely charged particles are at the top part of the cloud and the heavier negatevely ones sink to the bottom part of the cloud. And once they grow big enough a spark is formed (Positives and negatives attract) just like static electricity but scaled up
Jupiter is made of gas(like Saturn, Uranus and Neptune). What would happen to the strength of gravity if you
a) moved away from Jupiter
b)Fell in to Jupiter
PLS HELP ME OMG ITS DUE TOMOROW AND I HAVE NO CLUE WHAT TO DO BEST EXPLANATION GETS BRAINLIEST
Answer:
a) The strength of gravity decreases if one moved away from Jupiter
b) The strength of gravity increases if one fell into Jupiter
Explanation:
The gravitational attraction is given by Newton law of gravitation as follows;
[tex]Force \ (strength) \ of \ gravity = \dfrac{G \times M \times m}{R^2}[/tex]
Where;
G = The universal gravitational constant = 6.67408 × 10⁻¹¹ m³/(kg·s²)
M = The mass of Jupiter
m = The mass of the nearby body
R = The distance between the centers of Jupiter and the body
From the equation, we have that the gravitational strength varies inversely with the square of the separation distance between two bodies
Therefore, as one moves away, R increases, and the strength of gravity reduces
Similarly as the body falls into Jupiter, R, reduces the gravitational strength increases.
if an earthquake has a velocity of 41 m/s and a wavelength of 225 meters.
what is the earthquakes frequency?
Answer:
Frequency = 5.49Hz
Explanation:
Given the following data
Velocity = 41m/s
Wavelength = 225m
[tex] Velocity = wavelength * frequency [/tex]
Making frequency the subject of formula, we have;
[tex] Frequency = \frac {wavelength}{velocity} [/tex]
Substituting into the equation, we have;
[tex] Frequency = \frac {225}{41} [/tex]
Frequency = 5.49Hz
Therefore, the frequency of the earthquake is 5.49 Hertz.
what does interval training involve
Answer:
Interval training is simply alternating short bursts (about 30 seconds) of intense activity with longer intervals (about 1 to 2 minutes) of less intense activity. For instance, if your exercise is walking and you're in good shape, you might add short bursts of jogging into your regular brisk walks.
Explanation:
Answer:
Interval training is simply alternating short bursts (about 30 seconds) of intense activity with longer intervals (about 1 to 2 minutes) of less intense activity. For instance, if your exercise is walking and you're in good shape, you might add short bursts of jogging into your regular brisk walks
Explanation:
A farmer is walking through a field at a
velocity of +0.5 meters per second (m/s)
relative to the ground. At the same time, he
is throwing seeds in front of him at a
velocity of +2.1 m/s relative to himself.
What is the velocity of the seeds relative to
the ground as they travel through the air?
Answer:
The velocity of the seeds relative to the ground as they travel through the air is V = +2.6 m/s
Explanation:
Let V be the velocity of the seeds relative to the ground, v be the velocity of the seeds relative to the farmer and v' be the velocity of the farmer relative to the ground.
By vector addition, V = v + v'
Since v = the velocity of the seeds relative to the farmer = +2.1 m/s and
v' = the velocity of the farmer relative to the ground = +0.5 m/s
Then,
V = v + v'
V = +2.1 m/s + (+0.5 m/s)
V = +2.6 m/s
So, the velocity of the seeds relative to the ground as they travel through the air is V = +2.6 m/s
Please help me..........
Answer:
2nd one Force
Explanation:
Without a source of force and object won't have the capability of moving.
Answer:
force
Explanation:
pushing something forward
A sledder is moving to the right across unpacked snow and skidding to a stop. Of the forces listed, identify which act upon the sledder
Normal
Friction
Gravity
Tension
Applied
Air Resistance
(More than two)or idk
When A slider is moving to the right across unpacked snow and skidding to a stop, forces act upon the slider are: Normal force, Friction force, Gravity force.
What is force?An object's push or pull is seen as exerting a force. The interaction of the objects produces push and pull. You can also use words like stretch and squeeze to describe force.
The definition of force in physics is: the push or pull on a mass-containing item changes its velocity.
An external force is an agent that has the power to alter the resting or moving condition of a body. It has a direction and a magnitude. The application of force is the location at which force is applied, and the direction in which the force is applied is known as the direction of the force.
When a slider is moving to the right across unpacked snow and skidding to a stop gravitational force due to his weight, normal reaction force and frictional resistance force will act upon the slider.
To find more about force, refer the link:
https://brainly.com/question/13191643
#SPJ5
explain what you think is happening in this picture
Answer:
sorry, there is no picture, try re-uploading it with the pic
Explanation:
If you throw your annoying little sister down the stairs with a force of 60 N and she weighs 30 kg. What’s her acceleration rate?
Depends on what units you are using but
0.028196 gravitational acceleration on earth
0.2765 meters per second squared
0.9072 feet per second squared
ANSWER QUICK PLS!!
(04.02 MC)
Pam observed many small earthworms in the backyard of her house after a heavy rain. What most likely formed the earthworms?
Select one:
a. Rainwater that fell on stones
b. Wet mud in the backyard
c. Eggs of earthworms
d. Mixing of air and water
Answer:
c. Eggs of earthworms
Explanation:
The actual formation of earthworms is by existing earthworms laying eggs.
The other answers are all separate from earthworms, though they are all found in the area with the earthworms.
Answer:
C. eggs or earth worms!
Explanation:
I hope this helps and this is Correct!