Answer:
13.7795276 Inches
Explanation:
Which scientist first suggested that the sun was at the center of the solar system?
1 Galileo
2 Newton
3 Ptolemy
4 Copernicus
I rly need answers
Answer:
Nicolaus Copernicus
Explanation:
With the development of the heliocentric model by Nicolaus Copernicus in the 16th century, the Sun was believed to be the center of the Universe, with the planets (including Earth) and stars orbiting it.
#4 copernicus he was the first scientist
Calculate GPE, when height is 3m, gfs is 9.8n/kg and mass 10kg.
Answer:
The gravitational potential energy (GPE) of the object is 294 J.
Explanation:
Given;
height of object, h = 3 m
mass of the object, m = 10 kg
acceleration due to gravity, g = 9.8 m/s²
The gravitational potential energy (GPE) of the object is calculated as follows;
GPE = mgh
substitute the given values and solve for GPE
GPE = 10 x 9.8 x 3
GPE = 294 J
Therefore, the gravitational potential energy (GPE) of the object is 294 J.
Give an example of two metals and non-metals that don't have the usual properties. Why are they so unusual.
Answer:
Metals is defined as the solid material which shows lustrous appearance and is a good conductor of electricity while non-metal are defined as the material which are not in solid form, have no luster and are bad conductor of electricity.
Two metals which are so unusual are mercury and sodium because metals are generally solid bur mercury is present in liquid form and metals are hard but sodium is so soft.
Two non-metals which are so unusual are diamond and iodine because diamond is opposite to the property of non-metals that is hard and iodine shows lustrous appearance whereas non-metals are non- lustrous.
Hence, Two example of metals are mercury and sodium and two example of non-metals are diamond and iodine.
What is the purpose of Rheostat in an electric circuit
Answer:
to dim lights, or to control speed in a engine
Explanation:
How is a theory different from a law?
A. Theories are factual statements, while laws can be used to make predictions.
B. Theories cannot be modified over time, while laws can be modified over time.
C. Theories are factual statements, while laws are modified over time.
D. Theories can be modified over time, while laws cannot be modified over time.
Answer:
D. Theories can be modified over time, while laws cannot be modified over time.
Explanation:
a scientific theory is an in-depth explanation of the observed phenomenon. A law is a statement about an observed phenomenon or a unifying concept, according to Kennesaw State University
A theory is an explanation for what has been shown many times. A scientific law is a relationship in nature that has been proved many times and there are no exceptions
A 3.9 kg ball traveling towards a soccer player at a velocity of -3.5 m/s rebounds off the soccer player's foot at a velocity of +15.9 m/s. If the Force of contact between the ball and the player's foot was 25.9 N. For how long was the force applied?
Answer: 2.92 s
Explanation:
Given
Mass of ball is [tex]m=3.9\ kg[/tex]
The initial velocity of the ball is [tex]u=-3.5\ m/s[/tex]
Velocity after the rebound is [tex]v=15.9\ m/s[/tex]
Force during the contact is [tex]F=25.9\ N[/tex]
We know, change in momentum is Impulse
[tex]\Rightarrow F\cdot \Delta t=m(\Delta v)[/tex]
[tex]\Rightarrow 25.9\cdot \Delta t=3.9(15.9-(-3.5))\\\\\Rightarrow \Delta t=\dfrac{3.9\times 19.4}{25.9}=2.92\ s[/tex]
Thus, the force is applied for 2.92 s
Light-colored objects have high albedo because they have high reflectivity of sunlight. True or False
Answer:
I would say true
Answer: Its true
Explanation:
Bright, reflective surfaces have a high albedo .
Which of the following is not a compound
A. Gold
B. Water
C. Salt
D. Sugar
Answer:
Gold
Explanation:
Water is H20
Salt is NaCl
Sugar is C12H22O11
Gold is Au with no other elements
A mover pushes a piano 15 meters across a stage by applying a force of 325 N. How much work does the mover do? *
Work = (force) x (distance)
Work = (325 N) x (15 m)
Work = 4,875 Joules
The weight of an object is the effect of the gravitational pull on the object. Weight is calculated by multiplying mass of the object by the force of gravitational pull acting on it. A man weigh 120 N on earth. What will be his weight on the Moon, which has a gravity 1/6 of the gravity of Earth?
Answer:
20N
Explanation:
mass=weight/gravitational pull
mass=120/10
mass=12Kg
weight=mass×gravitational pull
=12× (⅙of 10)
=12×1.666666666667
=20N
Observa a tu alrededor y escribe el nombre de diez objetos que se encuentren en movimiento, Luego escribe el de otros diez que pienses que se encuentran en reposo. ¿Qué criterio tuviste en cuenta para considerar que están en reposo?
Answer:
Objetos que se encuentran en movimiento:
1) Un automóvil pasando por la calle.
2) Una crustácea que se acerca a mi casa.
3) Un avión volando en el cielo.
4) Un repartidor de comida desplazándose en una bicicleta.
5) Las aspas del ventilador en rotación.
6) Una hojarasca afuera de la casa.
7) La puerta de mi habitación abrirse.
8) Un mosquito entrando por la ventana.
9) Un metrónomo en movimiento.
10) Las hojas de mi cuaderno siendo agitadas por la brisa impulsada por el ventilador.
Objetos que se encuentran en reposo:
1) El semáforo de la esquina.
2) El automóvil de mi madre.
3) Las sillas del comedor.
4) Un jarrón de porcelana.
5) La nevera de la cocina.
6) La mesa de noche de mi habitación.
7) El automóvil de policía en la calle.
8) La impresora de memes.
9) El estante de libros.
10) El cesto de galletas.
Un objeto está en reposo si y solo si la posición de todos sus puntos no ha cambiado con respecto a la posición inicial en el tiempo. Los cambios de posición se manifiestan mediante tres formas:
(i) Traslación.
(ii) Rotación.
(iii) Deformación.
Explanation:
Objetos que se encuentran en movimiento:
1) Un automóvil pasando por la calle.
2) Una crustácea que se acerca a mi casa.
3) Un avión volando en el cielo.
4) Un repartidor de comida desplazándose en una bicicleta.
5) Las aspas del ventilador en rotación.
6) Una hojarasca afuera de la casa.
7) La puerta de mi habitación abrirse.
8) Un mosquito entrando por la ventana.
9) Un metrónomo en movimiento.
10) Las hojas de mi cuaderno siendo agitadas por la brisa impulsada por el ventilador.
Objetos que se encuentran en reposo:
1) El semáforo de la esquina.
2) El automóvil de mi madre.
3) Las sillas del comedor.
4) Un jarrón de porcelana.
5) La nevera de la cocina.
6) La mesa de noche de mi habitación.
7) El automóvil de policía en la calle.
8) La impresora de memes.
9) El estante de libros.
10) El cesto de galletas.
Un objeto está en reposo si y solo si la posición de todos sus puntos no ha cambiado con respecto a la posición inicial en el tiempo. Los cambios de posición se manifiestan mediante tres formas:
(i) Traslación.
(ii) Rotación.
(iii) Deformación.
Which graph represents a nonlinear relationship?
A straight line runs from 0 0 sharply upward.
A graphs shows 0 to 6 numbered on the horizontal axis and 0 to 40 on the vertical axis. The graph shows an upward trend.
A graphs shows 0 to 6 numbered on the horizontal axis and 0 to 40 on the vertical axis. The graph shows an downward trend.
A graphs shows 0 to 6 numbered on the horizontal axis and 0 to 40 on the vertical axis. The graph shows a curved line runs down from 28 0 to 0 2, then straight to 0 4 then curving upward to 6 28.
Answer:
The correct answer is D.
Explanation:
Im pritty sure;)
Answer:
D
Explanation:
edge
A soccer player kicks a ball with a force of 900 newtons. The ball has a mass of 0.5 kilograms. At what rate will the ball accelerate?
Explain and show work
Answer:
1800 m/[tex]s^{2}[/tex]
Explanation:
We know this because of Newton's first law, [tex]F=ma[/tex], which shows us that the force on an object is equal to its mass times the acceleration it recieves. This means that taking our values of 900N and 0.5kg, and plugging them in,
[tex]900N=(0.5kg)*(1800m/s^2)[/tex]
This is honestly a little strange because the force applied and the acceleration seem ridiculous, and a little strange for an answer. Either the values are not meant to be nearly close to reality, or you made a typo.
How does the euglena differ from the paramecium? Question 20 options: Euglena are photosynthetic. Paramecia use flagella to move. Paramecia have an "eye spot" to detect light. Euglena have both a macronucleus and a micronucleus
Answer: Euglena are photosynthetic
Explanation: USA test prep
Why does an ice cube melt in your hand? Question 3 options: The ice remains in a solid state even though heat is applied The temperature of the ice is greater than the temperature of your hand Sound energy creates vibrations which make the ice melt Heat is transferred from your hand to the ice making it melt
Answer:
3rd choice
Explanation:
heat is transfered causing it to melt
Answer:
C
Explanation:
can someone help me please?
Answer:
is this math of science
Explanation:
Which would be a good use for an organic substance? Check all that apply.
electrical conductors
waterproof coatings
fuels such as gasoline
microchips
plastic storage containers
Answer:
B,C,E
Explanation:
Paul turns up the volume on his TV. The TV sends an electrical signal to the speakers. The signal changes the sound's
Answer:
increases its amplitude.
Explanation:
Olivia is on a swing at the playground.
A girl is swinging on a swing set. At W she is about 45 degrees up and to the left. At X she is near the bottom of the swing just to the left. At Y she is near the bottom of the swing just to the right. At Z she is about 45 degrees up and to the right.
If the swing is moving from W to Z, at which point is her kinetic energy increasing and her potential energy decreasing? (based on a starting point of W)
W
X
Y
Z
Answer:b
Explanation:
b
Answer:
Its X
Explanation: took the test
Which is greater, the force exerted by the Earth on the Sun, or the force exerted by the Sun on the Earth? Why?
Answer:
There is no great force, the force exerted by the Earth on the Sun, and the force exerted by the Sun on the Earth are equal
Explanation:
By definition...
Which is the first step in the fusion process?
Answer:
deuteron
Explanation:
Answer:
C. The Third Picture
Explanation:
EDGE 2021
One clue we can observe that means a chemical reaction has occurred is the formation of light. What is one chemical reaction you can think of that causes light?
Answer:
There are five signs of a chemical change:
Color Change.
Production of an odor.
Change of Temperature.
Evolution of a gas (formation of bubbles)
Precipitate (formation of a solid)
Explanation:
I just went ahead and gave you the five signs of chemical change hoped it helped
A squirrel runs at a steady rate of 0.51 m/s in a circular path around a tree. If the squirrel's centripetal acceleration is 0.43 m/s 2 , what is the radius of the circle?
Answer:
0.84m
Explanation:
0.51+0.43=0.93
πr can be 22/7 or 3.14
radius is 2x2= 4
3.14 divide0.93divide 4
=0.84m/s
Answer:
0.605 m (approx.)
Explanation:
We know, given the radius and the circular velocity we can yield the centripetal acceleration using this equation,
[tex]a = \frac{v^2}{r}[/tex]
From this equation, we can solve for [tex]$r$[/tex] like this,
[tex]r = \frac{v^2}{a}\\r = \frac{0.51^2}{0.43} m \\ = 0.605 m[/tex]
A car travels a distance of 150 m in the direction of a constant force of 50 N. The work done on the car is
Answer:
the work done on the car is 7,500 J.
Explanation:
Given;
distance traveled by the car, d = 150 m
applied force, F = 50 N
The work done on the car is calculated as;
W = F x d
W = 50 N x 150 m
W = 7,500 J
Therefore, the work done on the car is 7,500 J.
Which of the following is not a vector
A) Acceleration
B) Length
C) Velocity
D) Force
How many different simple machines on a bike? If you can please name the class of lever,pulley etc.
Answer:
there should be 4 2 levers and 2 wheels
Explanation:
An object accelerates 16.3 m/s2 when a force of 4.6 newtons is applied to it, what is the object in grams
We have no idea WHAT the object is.
But if the 4.6 N is the ONLY force acting on it (including friction), then its mass is 282.2 grams.
PLS HELP
Which of these is not needed to find the kinetic energy of an object?
a. Its shape
c. Its velocity
b. Its mass
d. All of the above
Answer:
Ik its mass and velocity but not sure if its also shape
Its shape of an object that is not needed to find the kinetic energy of an object.
What is kinetic energy?The kinetic energy of an object is the energy that it possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity.
To learn more about kinetic energy here
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Finish the sentence
Newton’s 3rd law states that for every force there is an _____________________
Forces always occur in ________
Whenever one object exerts a force on a second object, the second object always exerts a force __________ back on the first object.
Answer:
1. Equal and opposite reaction
2. Pairs
3. That is equal
Explanation:
I have tried my best but without knowing your curriculum or the possible answers it is difficult to know exactly what the answer would be... :(
Please mark as branliest ;)
- Hope this helped!
Hydrogeneous Sediment include_____.
A) granite
B) evaporative salts
C) igneous rocks
D) metamorphic rocks