Answer:
M1 v1 + M2 v2 = M1 V1 + M2 V2
Assuming we are to fine V2 (the problem is not clear on this point)
50 * 5 + 100 * 10 = 50 * 8 + 100 V2 conservation of momentum
V2 = (250 + 1000 - 400) / 100 = 850 / 100 = 8.5 m/s
help me please i dont understand
Answer:
It is b
Explanation:
The question tells you that the distance was increased 3 times the original distance, which means it was moved 3 times
what do you understand by 'weightlessness due to freefall'?
Answer:
Weightlessness is simply a sensation experienced by an individual when there are no external objects touching one's body and exerting a push or pull upon it.
Answer:
Weightlessness is simply a sensation experienced by an individual when there are no external objects touching one's body and exerting a push or pull upon it. ... When in free fall, the only force acting upon your body is the force of gravity - a non-contact force.
Does a fan that is not spinning have energy?
Answer:
Yes, when dealing with electricity as long as there is an input source there is always built up energy waiting to be used also known as kinetic energy. The fan is not spinning but if it were turned on it would spin instantaneously.
if you know the time it took an object to travel between two points and the position of the object at the points, can you determine the object's instantaneous velocity
Answer:
Yes
Explanation:
[tex]v = \frac{ds}{dt} \\ where \: we \: need \: to \: know \\ \: change \: in \: displacement \\ \: and \: the \: time \: taken[/tex]
if you know the time it took an object to travel between two points and the position of the object at the points, then we can determine the object's instantaneous velocity by using the differential rate of the displacement function with respect to the time.
Instantaneous velocity = [tex]\frac{dS}{dt}[/tex]
What is Velocity?The total displacement covered by any object per unit of time is known as velocity. It depends on the magnitude as well as the direction of the moving object.
velocity= displacement / time taken
for instantaneous velocity = [tex]\frac{dS}{dt}[/tex]
Thus, If you know how long it took an item to go between two places and where it was when it got there, you can use the differential rate of the displacement function with respect to time to calculate the object's instantaneous velocity.
Learn more about Velocity from here,refer to the link;
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¿Qué trabajo efectúa una fuerza de 110 N para recorrer un desplazamiento de 20 m si el ángulo entre las direcciones de la fuerza y el desplazamiento es de 30 grados?
El trabajo de la fuerza aplicada es 1905 J
Los datos del problema son
Fuerza F = 110 N, La distancia recorrida d = 20 m El ángulo entre la fuerza y el desplazamiento θ = 30º
El trabajo se define por el producto escalar entre la fuerza y el desplazamiento, las letras en negrita indican vectores
W = F. D
Donde W es el trabajo, F la fuerza, d el desplazamiento y el punto representa el producto escalar,
W = F d cos θ
Esta expresión es un escalar y θ es el ángulo entre la fuerza y la distancia
Calculamos el trabajo
W = 110 20 cos 30
W = 1905 J
Donde J es la unidad de trabajo
El trabajo de la fuerza que es un escalar es 1905 J
Puede obtener más información sobre el trabajo aquí:
brainly.com/question/20395239
What is the correct definition of speed?
A. time (hours or seconds)
B. time per distance (hours per mile or seconds per meter)
C. distance per time (miles per hour or meters per second)
Answer:
C
Explanation:
The correct definition is distance / time, although teachers like to mix you up sometimes. A question like "How many minutes per mile does it take to go 3miles in 20 minutes?" In this question, the units are upside down.
The standard answer is what is the rate of speed when when 3 miles are covered in 2 hours.
Here the answer is 3/2 = 1.5 miles / hour which is the standard way of writing speed or rate. distance / time.
what is force (just trying this app)
Answer: F= force
m=mass of an object
a=acceleration
Explanation: Force is kinda like gravity, but the real noun would be “strength or energy as an attribute of physical action or movement.”
What simple machines combine to make a shovel which is a compound
machine?
A wheel and axle and lever
B. lever and pulley
C. inclined plane and wheel and axle
D. Wedge and lever
what is the principle of charge quantisation?
Answer:
Charge quantization is the principle that the charge of any object is an integer multiple of the elementary charge.
Explanation:
Determine the weight of an average physical science textbook whose mass is 3.1 kilograms. The
acceleration due to gravity is 9.8m/s2
.
A) 0.32 Newtons C) 6.82 Newtons
B) 3.1 Newtons D) 30.4 Newtons
Answer:
30.38 is the correct answer
Explain an experiment you could run to test the Big Bang theory, including the design and execution, and any observations you can make of the world around you related to the scientific theory. And explain how the observations support of refute the theory!!! Will mark branliest
The big bang theory or great expansion explains the formation of the universe from a point with very high density where matter and space were created, it can be observed in an experiment
The Big Bang theory that can be adapted with some home experiments, specifically the expansion can be measured using an experiment with inflating balloons.
Materials
deflated balloons
marker
thread
measuring tape
Description of the experiment
The stars or galaxies are marked repeatedly with an initial separation and this distance is measured by a thread the length and the thread with a meter, this is used as measured by the fact that the surface is curved.
The balloon is inflated and measurements of the separation are made, observing that as the volume of the balloon increases (time increase) the separation of the galaxies increases
The increase in distance is explained by the Big Bang theory or great expansion.
There is also astronomical evidence:
* The redshift of the hydrogen spectral lines that is explained by the Dopler effect, which is a move away from objects
* Background radiation in the microwave range that comes from everywhere and would be the residue of a large initial explosion.
Read more about at:
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After using soap to wash dishes by hand, if is sometimes difficult to keep your hands from remaining stick. Explain why rinshing your hand in lemon juice would make then less slick
Wan and Nurul sat on a see-saw. The see-saw is imbalanced because Wan’s mass is 45 kg while Nurul’s mass is only 30 kg. Suggest how Nurul can balance the see-saw.
We have that the see-saw will be balance if a weight of [tex]x=15kg[/tex] is added to Nural's side of the see-saw
[tex]x=15kg[/tex]
From the Question we are told that
Wan’s mass is [tex]M_w=45 kg[/tex]
Nurul’s mass is [tex]M_n= 30 kg.[/tex]
Generally
The Will be balance when the weight on both sides of the see-saw are equal
[tex]M_w=M_n+x[/tex]
[tex]45=30+x[/tex]
[tex]x=45-30[/tex]
[tex]x=15kg[/tex]
In conclusion
The see-saw will be balance if a weight of [tex]x=15kg[/tex] is added to Nural's side of the see-saw
[tex]x=15kg[/tex]
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What is the relation between pressure and area?
Answer:
Pressure is inversely proportional to Area ...
P = F/A
Answer:
Hence, pressure is inversely proportional to the area of contact. Additional information: In the SI unit system, the unit of force is Newton and the unit of area is square-meter. Atmospheric pressure can be defined as the pressure given by the atmosphere of earth near the surface or at sea level.
A wooden cylinder has a density of 4 g/cm3 and a mass of 48 cm3. What is the volume of the wooden cylinder?
Answer:
Volume is 12 cm³
Explanation:
[tex]volume = \frac{mass}{density} \\ [/tex]
mass » 48 g
density » 4 g/cm³
[tex]volume = \frac{48}{4} \\ \\ = 12 \: {cm}^{3} [/tex]
Differentiate the following functions with respect to x
x³ + 2x² - 5
Answer:
d f(x) / dx = d (x^3 + 2 x^2 - 5) /dx = 3 x^2 + 4 x
(Use the rule for differentiation)
Answer:
3x² + 10x
hope it's helpful
Tom walked slowly along the road, stopped to look at hid watch, realized he was late, and then started running.
Which table matches with this story?
Answer:
Box U
Explanation:
Lets clarify
He started from rest hence distance should be started from 0.He stopped in middle hence there should be a zero in the middle .(Only in U)Then the distance become higher as he started running.Answer: Table U matches the story
Which terms does velocity describe?
A. speed and momentum
B. gravity and direction
C. speed and direction
Answer:
c
Explanation:
HELP PLEASE ASAP!!!!
scientists use their imagination. Make a claim about the difference between being imaginative in doing science and doing pseudoscience. Use evidence to support your claim and explain your reasoning.
What are the two main
categories of particles and
antiparticles?
Answer:
Particles can be classified as hadrons – baryons and mesons – and leptons, each with its anti-particle, and they should know that interactions between these particles can be described in terms of transfer of other particles known as vector bosons.
Explanation:
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what do you think is the purpose of a periscope? Are there any other uses for periscopes besides for submarines?
Military personnel also use periscopes in some gun turrets and in armoured vehicles. More complex periscopes using prisms or advanced fibre optics instead of mirrors and providing magnification operate on submarines and in various fields of science
convert 46 kg to gram
Answer:
46000g
Explanation:
As we know that 1kg = 1000g
Therefore, 46kg = 46000g
A geologist was digging through Earth's surface and found deep in the earth's crust a rock that has flattened layers with a fossil imprinted in the rock. Choose the best scenario that lead to the formation of this rock.
Answer:
Please give options
Explanation:
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1. °C= (°F-32) X 5/9. what will be the answer?
2. °F= 9/5 (°C)+32
3. °K= °C+273
4. D= m/V
Answer:
F=9/5(°C)+32
Explanation:
Let's take an example
Take 100°C.[tex]\\ \sf\longmapsto \dfrac{9}{5}(100)+32[/tex]
[tex]\\ \sf\longmapsto 9(20)+32[/tex]
[tex]\\ \sf\longmapsto 180+32[/tex]
[tex]\\ \sf\longmapsto 212°F[/tex]
an aircraft is traveling along a runway at a velocity of 25m/s. It accelerates at a rate of 4m/s for a distance of 750m before taking off. calculate it's take-off speed.
Answer:
v = 81.394102980499 m/s
Explanation:
v = sqr(u^2 + 2as)
v - final velocity
u initial velocity
a acceleration
s displacement
Answer the following below.
Answer:
1. Radiation
2.Conduction
3.Radiation
4.Convertion
5.Convection
6.Conduction
7.Convertion
8.Conduction
What phrase describes a scientific law
Raising the temperature of a gas will increase its pressure to
volume of the gas would do what
Answer: Boyle found that when the pressure of a gas at a constant temperature is increased, the volume of the gas decreases. When the pressure of a gas is decreased, the volume increases. This relationship between pressure and volume it's called Boyle's law.
Explanation: In the 1600s, Boyle measured the volumes of gases at different pressures. Boyle found that when the pressure of a gas at a constant temperature is increased, the volume of the gas decreases. When the pressure of a gas is decreased, the volume increases. This relationship between pressure and volume it's called Boyle's law.
8. A girl is padaling her blcycle at a velocily of 0.10 km/min. How far will she travel in two hours?
Explanation:
2 h = 120 min
v = 0.1 km/m
distance = v × t
= .1 × 120
= 12 km
velocity of car is 500 m/s and train 200 m/s when will they meet.
Answer:
If they are start traveling in opposite direction from a point then they will never meet
