Answer:
b) They will have the same accelerationExplanation:
The acceleration of an object in free fall is known as the acceleration due to gravity, g, which is due to the attractive force of the Earth's gravitational field on the object. and is given by the following formula;
[tex]g = G \times \dfrac{Mass \ of \ the \ Earth}{(Distance \ between \ the \ object \ and \ the \ center \ of \ the \ Earth)^2}[/tex]
[tex]g = G \times \dfrac{M}{r^2}[/tex]
r = R + h
Where;
R = The radius of the Earth
h = The height of the center of the object above Earth's surface
Therefore, due to the large magnitude of R, and the comparatively small magnitude of h, R + h is approximately R, that is R + h ≈ R and R ≈ r, which gives;
[tex]g = G \times \dfrac{M}{R^2}[/tex]
Therefore, given that, the mass of the Earth, M, the radius of the Earth, R and the gravitational constant, G, are all constant, the value of g is therefore, constant for all objects and the value is approximately 9.81 m/s².
Ina shoots a large marble (Marble A, mass: 0.08 kg) at a smaller marble (Marble B, mass: 0.05 kg) that is sitting still. Marble A was initially moving at a velocity of 0.5 m/s, but after the collision it has a velocity of −0.1 m/s. What is the resulting velocity of marble B after the collision? Be sure to show your work for solving this problem along with the final answer.
Answer:
2.4 m/s
Explanation:
Momentum is conserved.
m₁u₁ + m₂u₂ = m₁v₁ + m₂v₂
(0.08 kg)(0.5 m/s) + (0.05 kg)(0 m/s) = (0.08 kg)(-0.1 m/s) + (0.05 kg) v
0.04 kg m/s = -0.08 kg m/s + (0.05 kg) v
0.12 kg m/s = (0.05 kg) v
v = 2.4 m/s
Please help!!
If you move 3 meters East and move 4 meters north what is the distance and what is the displacement?
Answer:
Si un objeto se mueve en relación a un marco de referencia (por ejemplo, si una profesora se mueve a la derecha con respecto al pizarrón, o un pasajero se mueve hacia la parte trasera de un avión), entonces la posición del objeto cambia. A este cambio en la posición se le conoce como desplazamiento. La palabra desplazamiento implica que un objeto se movió, o se desplazó.
Explanation:
El desplazamiento se define como el cambio en la posición de un objeto. Se puede definir de manera matemática con la siguiente ecuación:
\text{desplazamiento}=\Delta x=x_f-x_0desplazamiento=Δx=x
f
−x
0
start text, d, e, s, p, l, a, z, a, m, i, e, n, t, o, end text, equals, delta, x, equals, x, start subscript, f, end subscript, minus, x, start subscript, 0, end subscript
x_fx
f
x, start subscript, f, end subscript se refiere al valor de la posición final.
x_0x
0
x, start subscript, 0, end subscript se refiere al valor de la posición inicial.
\Delta xΔxdelta, x es el símbolo que se usa para representar el desplazamiento.
Debemos ser cuidados al usar la palabra distancia, ya que hay dos maneras de usar el término en física. Podemos hablar acerca de la distancia entre dos puntos, o podemos hablar de la distancia recorrida por un objeto.
La distancia se define como la magnitud o el tamaño del desplazamiento entre dos posiciones. Observa que la distancia entre dos posiciones no es la misma que la distancia recorrida entre ellas.
Es importante darse cuenta que la distancia recorrida no tiene que ser igual a la magnitud del desplazamiento (es decir, la distancia entre dos puntos). De manera específica, si un objeto cambia de dirección en su trayecto, la distancia total recorrida será mayor que la magnitud del desplazamiento entre esos dos puntos. Ve los ejemplos resueltos a continuación.
Help Meeee Please!!!!! This was due so long ago... DO NOT REPORT, THERE IS NO REASON TO REPORT! Assignment: Weathering in Action Exploration
You can see science in action all around you. In this activity, you will observe weathering.
Signs of Weathering| Mechanical or Chemical? Description of location
Flakes of brick -----
Cracks in rocks -----
Lichen growing on rocks------
Roots or plant growth ---------
making cracks in concrete
Worn away statues-------
Exposed rocks ----------
Rust on rocks -----------
Example You Found:
Sketches
Type of weathering:
Sketch:
Type of weathering:
Sketch:
Type of weathering:
Sketch:
I really need help, I don't understand this so please help me.
Below is the document to this it is the exact same as the question.
Answer: Chemical
Explanation: because it is changeing its chemical structure if its wrong sorry .
Answer:
chemical, chemical, chemical, mechanical, chemical, mechanical, chemical. im still trying to figure out the rest!
Explanation:
2. a) Force affects the body and results in different changes. The grid given below
has the words related to the effects of force. Find those words.
a) Force could be a push or a pull.
b) A force arises due to the interaction between two objects.
c) Force has magnitude as well as direction.
d) A change in the speed of an object or the direction of its motion or both implies a change in its state of motion.
e) Force acting on an object may cause a change in its state of motion or a change in its shape.
f) A force can act on an object with or without being in contact with it.
Answer:
Please find the answer in the explanation
Explanation:
Given that Force affects the body and results in different changes.
The grid that has the words related to the effects of force are :
a) Force could be a push or a pull.
c) Force has magnitude as well as direction.
e) Force acting on an object may cause a change in its state of motion or a change in its shape.
f) A force can act on an object with or without being in contact with it.
A stunt man projects himself horizontal from a height of 60m. He lands 150m away from where he was launched. How fast was he launched?
A.) 54.87 m/s
B.) 43.98 m/s
C.) 47.46 m/s
D.) 42.87 m/s
Answer:
D) 42.87 m/s
Explanation:
First, find the time it takes him to land. Given in the y direction:
Δy = 60 m
v₀ = 0 m/s
a = 9.8 m/s²
Find: t
Δy = v₀ t + ½ at²
60 m = (0 m/s) t + ½ (9.8 m/s²) t²
t = 3.5 s
Next, find the speed needed to travel the horizontal distance in that time. Given in the x direction:
Δx = 60 m
a = 0 m/s²
t = 3.5 s
Find: v₀
Δy = v₀ t + ½ at²
150 m = v₀ (3.5 s) + ½ (0 m/s²) (3.5 s)²
v₀ = 42.87 m/s
a mountain biker cycling a trail traveling at 5.4 m/s begins to slow down when she notice a wooden bridge ahead has flooded. if she begins braking when she is 15.0 m from the bridge and comes to a stop just before reaching the bridge, how long did it take her to stop ?
Answer:
t = 5.56 s
Explanation:
In order to calculate the time interval taken by the mountain biker to come to a stop, we will use third equation of motion and first find the deceleration:
2as = Vf² - Vi²
where,
a = deceleration = ?
s = distance = 15 m
Vf = Final Velocity = 0 m/s
Vi = Initial Velocity = 5.4 m/s
Therefore,
2a(15 m) = (0 m/s²) - (5.4 m/s)²
a = - 0.972 m/s²
Now, we use 1st equation of motion:
Vf = Vi + at
therefore,
0 m/s = 5.4 m/s + (-0.972 m/s²)(t)
t = (5.4 m/s)/(0.972 m/s²)
t = 5.56 s
The time taken should be t = 5.56 s
Calculation of the time taken:here we used the third equation of motion
But first we determine the deceleration.
We know that
2as = Vf² - Vi²
here,
a = deceleration = ?
s = distance = 15 m
Vf = Final Velocity = 0 m/s
Vi = Initial Velocity = 5.4 m/s
So,
2a(15 m) = (0 m/s²) - (5.4 m/s)²
a = - 0.972 m/s²
Now, we use 1st equation of motion:
So,
Vf = Vi + at
0 m/s = 5.4 m/s + (-0.972 m/s²)(t)
t = (5.4 m/s)/(0.972 m/s²)
t = 5.56 s
Hence, The time taken should be t = 5.56 s
Learn more about bridge here: https://brainly.com/question/24822543
How does population stimulate social change?
Answer:
A change in the size of the population may bring about changes in the culture. For example, food brought to this country by immigrant groups have become common in many American kitchens. Population increases and decreases affect the economy. For example, by increasing the demand for goods and services, a growing population may increase employment and stimulate the economy. An increase in the general population also means that there are more people occupying the same amount of space, which creates more crowded conditions. In addition, the larger population brings increased demand for energy, food, housing, schools, stores, and transportation. People also bring about changes simply by moving from one place to another. Migrations of people within a country can cause social changes, such as the loss of regional distinction within the country. Social and cultural changes also result from changes in the average age of a population. When fewer people are having babies, for example, there is less need for schools, recreation centers, and other services geared toward children.
Explanation:
Population changes stimulate social change in a variety of ways, including direct and indirect changes in food habits and the educational system, migration patterns, and people's overall mental and physical health.
What is the effect of population growth?Population growth is a negative factor for the environment because rural areas are converting to urban areas and more people are migrating to cities. Due to this rapid population growth, a food shortage will occur, the cost of living will increase in the advanced cities, the demand will increase but not the supply, and this will lead to mental pressure on the generation to keep a place to live and food to eat and in this way the social change will happen.
Hence, population changes stimulate social change in a variety of ways, including direct and indirect changes in food habits and the educational system, migration patterns, and people's overall mental and physical health.
Learn more about population growth here.
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Which scientist's idea what "gases are formed from tiny particles so small you can't see them. The particles are spread out into a certain area and move when people walk through them."
Answer:
Bernoulli
Explanation:
Hello! I took the k12 science quiz! I hope you get an A!
Have a blessed day! :)
Bernoulli was the scientist who gave the idea that "gases are formed from tiny particles so small you can't see them. The particles are spread out into a certain area and move when people walk through them."
What is an ideal gas?It is an imaginary gas for which the volume occupies by it is negligible, this gas does not exist in a practical situation and the concept of an ideal gas is only the theoretical one,
Bernoulli was the scientist who gave the idea that "gases are formed from tiny particles so small you can't see them. The particles are spread out into a certain area and move when people walk through them."
The kinetic molecular theory of gases is stated via Bernoulli's principle. The hypothesis states that gas particles are tiny and separated from one another. But when things travel through them, they change from their position as a result of fluid dynamics.
Learn more about ideal gas from here,refer to the link;
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If you increase your work and decrease your time, you will haveA. more power.less power.the same amount of power.power rating can not be determined
If you increase your work and decrease your time, you will have A. more power.
Power (P) is the rate at which work is done. In the International System of Units, the unit of power is the Watt, equal to one joule per second. Mathematically, it is equal to work (W) divided by time (t).
[tex]P = \frac{W}{t}[/tex]
If you increase your work, you increase the numerator in the expression above. If you decrease your time, you decrease the denominator in the expression above. They both have the same consequence that is an increase in power, that is, more work done in less time.
If you increase your work and decrease your time, you will have A. more power.
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1. what is the displacement of the car between 0s and 24 s?
2. what is the distance of the car between 0s and 24s?
Answer:
1). Displacement = 24 m
2). Distance = 28 m
Explanation:
We will use the concept that distance is a scalar quantity and displacement is a vector quantity.
1). Displacement of the car between 0 s and 24 s
Displacement = distance between origin (0, 0) and a point on x - axis (24, 0)
= 24 - 0
= 24 meters
2). Distance traveled by the car = Distance traveled by the car on the ramp
= Distance traveled on the tracks (AB + BC + CD)
AB = [tex]\sqrt{6^2+8^2}[/tex]
= [tex]\sqrt{36+64}[/tex]
= [tex]\sqrt{100}[/tex]
= 10 m
BC = 16 - 8
= 8 m
CD = [tex]\sqrt{8^2+6^2}[/tex]
= 10 m
Therefore, distance traveled by the car = 10 + 8 + 10
= 28 m
Answer:
1). Displacement = -12 m
2). Distance = 12 m
Explanation:
A quantity that has magnitude & direction is called
Explanation:
VECTORS DEF: A vector is a quantity that has both magnitude and direction.
During the power stroke energy released by combustion generates the force that:_______.
Explanation:
An IC engines means an Internal Combustion engine. Here, the combustion takes place in side a chamber or a cylinder internally, hence it is known as internal combustion engine.
Combustion is the process where oxygen reacts with the fuel and it burns to produce a large amount of force and heat. In each revolution of the crank, the engine creates a power stroke when the piston goes from the bottom dead center to the top dead center.
During each power stroke, the energy released forces the piston down and the crankshaft is rotated.
There are two ways that an object can get in motion. What are they?You may use the following sentence frame:An object can get in motion by a ____ or a ____.
In the given diagram(in the resources) which kind of lever is mentioned? Also calculate the amount of load that can be lifted with an effort of 50N.
Answer:
Solution : Given,
Load (L) = ?
L×LD=E×ED
L=100 cm=50N×40 cm
L=40×50÷100
L=20N
Explanation:
The distance from the cafeteria to gym is 0.112 kilometers, How many millimeters would it be?
A student planted bean seeds in two cups and placed the cups on a sunny windowsill. One cup was given 10 mL of water and the other cup was given no water. What are two things that should be kept constant in this experiment?
Answer: The water and sun.
Please hit that brainlist button and hoped it helped you out.
How is NASA a catalyst to make the crew work better?
Answer:
with teamwork
Explanation:
you need to use team work so the right answer is C
it is important to know the difference between atoms
Answer:
yes
hope this will help you
what is the meaning of the state the problem ?
Answer:
A problem statement is a concise description of an issue to be addressed or a condition to be improved upon. It identifies the gap between the current (problem) state and desired (goal) state of a process or product.
Explanation:
HEY CAN ANYONE HELP ME OUT IN DIS RQ!!!!!!
Answer:
40 laps
Explanation:
400/10
40
PLS MARK ME AS THE BRAINLIEST
newtons second law of motion-skateboard
Answer:
??? I don't get it, please explain. What is your question????
Explanation:
A racing car can complete an 800 m long lap in 14 s. What is the speed of the
car?
Answer:
57.1 m/s
Explanation:
Speed = Distance/Time
Speed = 800/14
Speed = 57.1 m/s (3sf)
Convert 66.2 mi/h to m/s. 1 mi = 1609 m.
Answer in units of m/s.
Answer:
Explanation:
66.2mi/h to m/s
[tex]\frac{1609m}{1mi}[/tex]×[tex]\frac{66.2mi}{1h}[/tex]×[tex]\frac{1h}{60min}[/tex]×[tex]\frac{1min}{60s}[/tex]
mi will go with mih with h min with minm/s is left[tex]\frac{1609*66.2}{60*60}[/tex]= 29.58772222
Pls make sure of the way of solving to be sure...
A simple pendulum makes 10 oscillations in 20 seconds. What is the time period and frequency of its oscillation? with steps and formula
Answer:
When a simple pendulum makes 10 oscillation in 20 seconds, the time taken for each osillation
=20/10
= 2seconds
hence, as the time period is calculated to be 10secondd, the frequency of oscillation
=1/T
=1/2
= 0.5 here's
Modern scientists say that electrons are found in a ...
a. cloud
b. orbital
c. pudding
d. orb
The current, 2019, women's world record for the
400-meter run around an oval track is held by Marita Koch, with a time of 47.60
seconds. What was her average velocity during this race?
a) 4.760 m/s
b) 0 m/s
c) 0.1190 m/s
d) 8.403 m/s
Answer: D
8.403 m/s
Explanation:
Given that the women's world record for the 400-meter run around an oval track is held by Marita Koch, with a time of 47.60
seconds.
Her average velocity during this race will be
Velocity = distance/ time
Velocity = 400 / 47.6
Velocity = 8.403 m/s
Therefore, her average velocity during this race will be 8.403 m/s
D is therefore the correct answer.
PLEASE HURRY WILL GIVE BRAINLIEST FOR FIRST ANSWER!!!
What is the kinetic energy of a ball with a mass of 0.5 kg and a velocity of 10 m/s? (Formula:)
25 J
53
503
1003
Describe what happens to the water molecules as heat energy is added and the water changes from solid to liquid to gas
Answer:
Explanation:
Adding heat can cause ice (a solid) to melt to form water (a liquid). Removing heat causes water (a liquid) to freeze to form ice (a solid). When water changes to a solid or a gas, we say it changes to a different state of matter. Even though the water's physical form changes, its molecules stay the same.
A girl cycles for 3hrs at a speed of 40km/h.What distance did she travel?
Answer: 120 km
Explanation:
Distance= speed x time
her speed is 40km/hr
and her time was 3 hours
40x 3= 120 km
a chemical reaction a temperature change may occur because of the breaking or formation of chemical bonds that release excess energy. Since there is a change in temperature why wouldn't this reaction be considered a physical change instead of a chemical change ?
Answer:
well, a chemical change will have to have something about its physically feature to be changed and it cannot be undone, say you burned wood, thats a chemical change as you cannot unburn it or remove the markings of the burn
:
