Answer:
Satellites don't fall from the sky because they are orbiting Earth. Even when satellites are thousands of miles away, Earth's gravity still tugs on them. Gravity--combined with the satellite's momentum from its launch into space--cause the satellite go into orbit above Earth, instead of falling back down to the ground.
hlo anyone help
a stone is thrown upward with the kinetic energy of 10 joule if it goes up to a maximum height of 5 M find the initial velocity and mass of the stone??
Ty no spam plz help rn
Explanation:
Here, kinetic energy of the body, K.E=10 J
Height attained by the body, h=5 m
h=5m
When the body attains maximum height, its kinetic energy is converted into potential energy.
P.E=K.E
⟹mgh=10
⟹m= 10/gh
= m = 10/(10×5) =0.2 kg (taking the value g as 10m/s²)
Now, ½mv²=10
0.2×v²=20
v²=20/0.2
v²=100
v=√100
v=10m/s.
hope this helps you.
[tex]\huge \bf༆ Answer ༄[/tex]
Let's solve ~
As we know the total energy [P.E + K.E = C] of the system remains constant throughout the motion,
So, When a stone was thrown initially it didn't had any potential energy (P.E = 0) but had kinetic Energy of 10 joules.
So, total energy = P.E + K.E = 0 + 10 = 10 joules
As per the given information, equate it with the formula.
[tex] \sf \dfrac{1}{2}m {v}^{2} = 10[/tex][tex] \sf m {v}^{2} = 20[/tex]Now, As it approaches 5m height it comes to rest, Therefore velocity = 0. And since velocity = 0 then Kinetic Energy = 0
Now, let's find the Potential Energy at that point ~
[tex] \sf mgh[/tex][tex] \sf m \times 10 \times 5[/tex][tex] \sf50m[/tex]And here, the Total energy = P.E + K.E = 10 Joules
So,
[tex] \sf50m + 0 = 10 [/tex][tex] \sf50m = 10[/tex][tex] \sf m = 10 \div 50[/tex][tex] \sf m = 0.2[/tex]Therefore, mass of the object is 0.2 kg = 200 grams
Now, plug the value of mass (m) in the equation of kinetic Energy to find the initial velocity of the stone ~
[tex] \sf m {v}^{2} = 20[/tex][tex] \sf0.2 \times {v}^{2} = 20[/tex][tex] \sf {v}^{2} = 20 \div 0.2[/tex][tex] \sf v = \sqrt{100} [/tex][tex] \sf v = 10 \: \: ms {}^{ - 1} [/tex]Hence, velocity of the particle at the beginning was 10 m/s
What coefficient is needed in front of H2O to balance the equation below?
Let a, b, c be the coefficients in the balanced reaction,
a P₄O₁₀ + b H₂O ⇒ c H₃PO₄
Count the number of each atom on either side of the reaction:
• P : 4a = c
• O : 10a + b = 4c
• H : 2b = 3c
Suppose a = 1. Then from the first equation,
c = 4•1 ⇒ c = 4
and from the third equation,
2b = 3•4 = 12 ⇒ b = 6
The third equation is also satisfied:
10a + b = 4c ⇒ 10•1 + 6 = 4•4 ⇒ 16 = 16
So, the balanced reaction is
P₄O₁₀ + 6 H₂O ⇒ 4 H₃PO₄
which makes D the correct answer.
How charged objects can affect other objects without touching them. ?
Mass can be measured with a triple
beam balance in units of
Resources
A. grams
B. Newtons
C. cubic centimeters
D. millimeters
Answer:
A
Explanation:
The parking brake on a 1200kg automobile has broken, and the vehicle has reached a momentum of 7800kg.m/s. What is the velocity of the vehicle?
Answer:
Velocity of the vehicle (v) = 6.5 m/s
Explanation:
Mass of automobile (m) = 1200 kg
Momentum of vehicle (p) = 7800 kg m/s
By using formula of momentum:
[tex] \rm p = mv \\ \rm 7800 = 1200 \times v \\ \rm v = \frac{7800}{1200} \\ \rm v = 6.5 \: m {s}^{ - 1} [/tex]
Helppppp 30pointsssssssssssssssssss
Answer:
so sorry i don't know the answer so sorry
Two boxes are 8 cm apart. Which of the following should Janet do to decrease the gravitational force between the boxes?
Answer:
the answer is 2.
Explanation:
A moving car hits the breaks and starts to slow down. The car was moving 35 m/s when hitting the breaks and slows at a rate of 7 m/s/s. What is the final velocity of the car after 4 seconds?
7 miles per second.
It would take 5 seconds to stop because 35 divided by 7 = 5.
It would slow 28 miles in 4 seconds because 7 x 4 = 28.
35 - 28 = 7.
The density of air is 1.3 kg/m'. Calculate the mass of air in the room.
Answer:
The density of air is 1.3 kg/m'. Calculate the mass of air in the room.
astronomers have determined the surface temperature of stars by studying their colors. what color emission represents stars with the hottest temperatures?
Answer:
Blue
Explanation:
Did the question already
What is the height of the Golden Bridge?
Answer:
hi your answer to this question is 220'
Explanation:
hope this helped you
Why does calcium chloride have a greater affect on colligative properties verses sodium
chloride?
Answer:
Calcium chloride is very effective, working at temperatures below most products, and is significantly more effective than sodium chloride because of its ability to extract moisture from its surroundings and to cause exothermic or heat generating reactions.
Explanation:
Hope this helps
In the fermentation of alcohol, sugars in the liquid are converted to alcohol and bubbles are formed on the surface of the liquids. Which gas forms the bubbles?
Answer:
I believe it is Carbon Dioxide because after yeast breaks down the glucose (sugar) molecule, it forms/creates CO2 and Ethanol. (though it might be Ethanol that creates the bubbles) I am not quite sure if this is correct, but I hope it helps! :,)
Match the definition with the appropriate word.
temperature
part of internal energy that can be
transferred
heat
measure of the average kinetic energy of a
substance
thermal energy
total potential and kinetic energies of the
particles in a substance
internal energy
thermal energy that flows from one
substance to another
Answer:
Temperature: measure of the average kinetic energy of a substance
Internal energy: total potential and kinetic energies of the particles in a substance
Heat: thermal energy that flows from one substance to another
Thermal energy: part of internal energy that can be transferred
Explanation:
Proof for correct answers on edge :)
A furniture crate of mass 60 kg is at rest a loading ramp that makes an angle of 25° with the horizontal
The coefficient of kinetic friction between the crate and the ramp is 0.2. What force, applied parallel to the incline, is required to push the crate up the incline at a constant speed?
Answer:
furniture crate of mass 60 kg is at rest a loading ramp that makes an angle of 25° with the horizontal
The coefficient of kinetic friction between the crate and the ramp is 0.2. What force, applied parallel to the incline, is required to push the crate up the incline at a constant speed?
Explanation:
furniture crate of mass 60 kg is at rest a loading ramp that makes an angle of 25° with the horizontal
The coefficient of kinetic friction between the crate and the ramp is 0.2. What force, applied parallel to the incline, is required to push the crate up the incline at a constant speed?
[tex] \huge \boxed{ \sf lol}[/tex]
A woman of mass 49 kg jumps off the bow
of a 78 kg canoe that is intially at rest.
If her velocity is 4.5 m/s to the right, what
is the velocity of the canoe after she jumps?
Answer in units of m/s i.
x x
The woman-canoe system has zero initial momentum. When the woman jumps from the canoe, the total momenta of the woman and canoe is conserved, so that
0 = (49 kg) (4.5 m/s) + (78 kg) v
where v is the velocity of the canoe. Solving for v, we find
(78 kg) v = - (49 kg) (4.5 m/s)
v = - 49/78 (4.5 m/s)
v ≈ -2.8 m/s
which is to say, the boat is given a velocity of 2.8 m/s to the left.
A pilot wishes to fly from airport A to airport B. Airport B is located due south from airport A. The pilots aircraft averages a speed of 160 mi/hr. If the pilot is flying in a wind which blows out of the west at a speed of 40 mi/hr, then the pilot should head his plane in the direction of vector ...
The pilot should head his plane in the direction of vector of 76⁰.
The given parameters;
velocity of the plane due south, a =160 mphvelocity of the wind west, b = 40 mphLet the direction of the vector = θThe direction of the vector can be determined by applying the principle of vector addition;
[tex]tan(\theta) = \frac{v_y}{v_x} \\\\\theta = tan^{-1} (\frac{160}{40} )\\\\\theta = 76 \ ^0[/tex]
Thus, the pilot should head his plane in the direction of vector of 76⁰.
Learn more about direction of vector here:https://brainly.com/question/2142917
Change in inherited characteristics over time is called what?
Answer:
characteristics
Explanation:
Change in inherited characteristics over time is called what?Change in inherited characteristics over time is called what?Change iChange in inherited characteristics over time is called what?n inherited characteristics over time is called what?Change in inherited characteristics over time is called what?
Change in inherited characteristics over time is called what?Change in inherited characteristics over time is called what?Change in inherited characteristics over time is called what?
[tex] \color{blue}{ \sf lololololololol}[/tex]
What two things related to sedimentary rocks do you see at the Grand Canyon ?
Answer:
sandstone and mudstone
Explanation:
9. When a balloon rises into the air, it
A. Expands on cooling
B. Contracts on cooling
C Expands on heating
D. Contracts on heating
Answer:
Answer 3: When a balloon goes up higher in the air, its size will increase. Since there's less air in the upper atmosphere, there's less stuff pushing back on the balloon, and hence the pressure is lower, which allows the balloon to expand
Answer: C
Explanation:
As the balloon rises, the gas inside the balloon expands because the atmospheric pressure surrounding the balloon drops. The atmosphere is 100 to 200 times less dense at the float altitudes than on the ground. and as the air is heated inside the balloon it causes it to rise upwards (because it is lighter than the cooler air on the outside). When the pilot needs to bring the balloon down again, he simply reduces the temperature of the air inside the balloon causing it to slowly descend.
Calculate the weight of the object of mass
20kg. (g= 10 m/s^2)
Answer:
mass= 20kg
g=10m/s2
weight is F=mg
F=20×10
F=200N
How long did it take Sally riding her bike to slow down from 18 km/h to 6 km/h if the deceleration was at a rate of 4 km/h/s?
4.5 seconds
3 seconds
3 hours
6 seconds
A 2-year-old child is prescribed cyclosporine. The parent says the child doesn't like taking the liquid medication. Which statement by the nurse is most appropriate
Given what we know, we can say that the most appropriate response by the nurse is to indicate that the parent should dilute the medicine in chocolate milk in order to make it more palatable.
Why is this an appropriate response?This is an appropriate response given that it offers a possible solution for the problem.The nurse is first showing that the problem presented by the parent is being taken seriously.Then, without criticizing the parent, a healthy and viable solution is offered.Therefore, we can confirm that since this response is a calm and thought-out response that respects the patient and offers a viable solution, it can be considered the most appropriate statement by the nurse.
To learn more about Nursing care visit:
https://brainly.com/question/6685374?referrer=searchResults
Express the sum of 2.52 kg + 131 g in kilograms with the correct number of significant
figures.
Convert second term into kg
131 = 0.131
Term has become:
2.52 + 0.131
The total is:
2.651 kg
A well chosen lifetime activity is something that should hold a person's interest for a long time.
Please select the best answer from the choices provided.
T
F
Answer:
true
Explanation:
as long as you are interested, you are happy
Since lifetime activities are done for a lifetime, it is true that a well chosen lifetime activity is something that should hold a person's interest for a long time.
What is a lifetime activity?A lifetime activity is an activity which an individual decides to do for a lifetime.
A lifetime activity should be able to hold a person's interest for a long time, else it could lead to frustration.
Some lifetime activities include:
choice of careersmarriage family relationshipsTherefore, it is true that a well chosen lifetime activity is something that should hold a person's interest for a long time.
Learn more about lifetime activity at: https://brainly.com/question/1458028
A wave traveling at 230 m/sec has a wavelength of 2.1 meters. What is the frequency of this wave?
Answer:
109.52 HzExplanation:
The frequency of the wave when given it's velocity and wavelength only can be found by using the formula
[tex]f = \frac{c}{ \lambda} \\ [/tex]
where
c is the velocity of the wave in m/s
[tex] \lambda[/tex] is the wavelength in meters
From the question we have
c = 230 m/s
[tex] \lambda[/tex] = 2.1 m
[tex]f = \frac{230}{2.1} = 109.523809... \\ [/tex]
We have the final answer as
109.52 HzHope this helps you
What is the force of gravity?
Answer:
2. 4.63 x 10 to the -11th power
Explanation:
m1 = 3.1, m2= 6.3, d = 5.3, G = 6.67 × 10^-11
m1 · m2 = 3.1 · 6.3 = 19.5
d² = 5.3² = 28.1
19.5/28.1 = 0.694
(6.67 · 10^-11) · 0.694 = 4.63 × 10^-11
Answer:
Natural phenomenon
Explanation:
Gravity, or gravitation, is a natural phenomenon by which all things with mass or energy—including planets, stars, galaxies, and even light—are attracted to one another.
Examples of this can be:
The force that holds the gases in the sun.
The force that causes a ball you throw in the air to come down again.
The force that causes a car to coast downhill even when you aren't stepping on the gas.
The force that causes a glass you drop to fall to the floor.
When a squid pushes against the water, the squid moves forward because the
______________ pushes against the _______________.
Answer:
water pushes against the squid
Help me pls both answers i’ll give brainly
Two asteroids crashed. The crash caused both asteroids to change speed. Scientists want to use the change in speed and motion to figure out which asteroid has more mass. Based on the information in the diagram, which statement is correct? In your answer, explain what the forces were like and why the asteroids changed their motion.
Asteroid 1 has more mass than Asteroid 2.
Asteroid 1 and Asteroid 2 are the same mass.
Asteroid 1 has less mass than Asteroid 2.
Answer:
Asteroid 1 has more mass than asteroid 2
Explanation:
User avatar
thenoobygamerpro
01/25/2020
Physics
Middle School
answered
Asteroid 1 moving 8km/s right asteroid 2 moving 16 km/s left before the crash. After the crash asteroid 1 is moving 4 km/s left and changed speed bu 12km/s. Asteroid 2 moving 2km/s left and changed speed by 14km/s
Two asteroids crashed. The crashed caused both asteroids to change speed. Scientist want to use the change in speed and motion to figure out which asteroid has more mass. Based on the information in the diagram. which statement is correct? In your answer explain what the forces were like and why the asteroids changed motions
Asteroid 1 has more mass than asteroid 2
Asteroid 1 and asteroid 2 are the same mass
Or asteroid 1 has lees mass than asteroid 2
1
SEE ANSWER
ADD ANSWER
+41 PTS
spidermanmorales2005 avatar
can you complete the full sentence?
thenoobygamerpro avatar
Sorry finished
Advertisement
thenoobygamerpro is waiting for your help.
Add your answer and earn points.
Answer
4.0/5
9
author_link
cryssatemp
Ace
2.2K answers
12.3M people helped
Answer: Asteroid 1 has more mass than asteroid 2
Explanation:
We can use the conservation of momentum law to find the answer. So, according to this law:
"If two objects or bodies are in a closed system and both collide, the total momentum of these two objects before the collision will be the same as the total momentum of these same two objects after the collision".
This means the momentum before the collision or crash () is equal to the momentum after the collision ():
(1)
Before the crash:
(2)
Where:
is the mass of the first asteroid
is the velocity of the first asteroid
is the mass of the second asteroid
is the velocity of the second asteroid
(3)
After the crash:
(4)
Where:
is the final velocity of the first asteroid
is the final velocity of the second asteroid
(5)
Substituting (3) and (5) in (1):
(6)
Grouping similar terms:
(7)
Then:
(8) This means must be multiplied by 1.16 km/s in order to make this side of the equation equal to .
