Answer:
Its velocity.
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
Which acids are found in acid precipitation?
understand friend
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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.
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
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.
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.
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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:
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:
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
What’s the quotient in 80.64 ÷ 3.6
Answer:
30 30 30 yuhhhhhhhhhhhh
find the kinetic energy of a 985 g bunny rabbit when running at 3.82 m/s. show work plz
Answer:
9.2m/s sir Thank me later
Answer:
Given
mass (m) =985 ☓ 0.001 , 0.985 kg
velocity (v) =3.82m/s
kinetic energy(k. e) =?
Form equation
[tex]k.e = \frac{1}{2} mv {}^{2} \\ = \frac{1}{2} \times 0.985 \times 3.82 {}^{2} \\ = 7.1868kj \\ kinetic \: enegy = 7.1868kj[/tex]
I hope this help
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!
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.
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.
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.
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...
Hydrogeneous Sediment include_____.
A) granite
B) evaporative salts
C) igneous rocks
D) metamorphic rocks
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
can someone help me please?
Answer:
is this math of science
Explanation:
What is the purpose of Rheostat in an electric circuit
Answer:
to dim lights, or to control speed in a engine
Explanation:
Which state helps produce light in fluorescent lightbulbs?
A.
Solid
B.
Plasma
C.
Gas
D.
Liquid
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]
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:
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
23. How does the microwave appliance work?
Answer: The microwaves are reflected within the metal interior of the oven where they are absorbed by food. Microwaves cause water molecules in food to vibrate, producing heat that cooks the food.
Explanation:
Which is the first step in the fusion process?
Answer:
deuteron
Explanation:
Answer:
C. The Third Picture
Explanation:
EDGE 2021
What is the acceleration of a 50 kg object pushed with a force of 500 newtons?
F=ma
a=F/m
a=500N/50kg
a=10m/s2
Answer:
Explanation:
m=1000kg and a=3m/s2 . hence, the force needed to accelerate the 1000kg car by 3m/s2 is 3000N
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
Can someone help me with this, please? I have the answer but I need help with why the answer is that :(
A block of mass m is placed against the inner wall of a hollow cylinder of radius R that rotates about a vertical axis with a constant angular velocity, ω, as shown above. In order for friction to prevent the mass from sliding down the wall, the coefficient of static friction, μ, between the mass and the wall must satisfy which of the following inequalities? (Ans: μ is greater than or equal to g/(w^2r)
Answer:
See explanation below
Explanation:
Recall that the force of static friction is the product of the coefficient of static friction between surface and object, times the force applied perpendicular to the surface.
In our case, that perpendicular force has magnitude equal to the centripetal acceleration times the mass m of the block. The centripetal acceleration is defined as the quotient between the square of the tangential velocity divided by the radius at which the rotating mass is located (in our case R).
In order to estimate the tangential velocity given the angular velocity ω, we simply multiply it by R:
[tex]v_t=\omega\,R[/tex]
and therefore the force acting on the surface of the cylinder is:
[tex]F=m\,*\,a_c=m\,*\,\frac{v_t^2}{R} =m\,*\, \frac{\omega^2\,R^2}{R} =m\,*\,\omega^2\,*R[/tex]
The force of friction between the block and the inner wall of the hollow cylinder will then be: [tex]f=\mu\, *\,m\,*\omega^2\,*\,R[/tex]
In order for this force of static friction to be able to prevent the mass to slide down due to gravity, we need that the friction force is at least equal to the gravitational force. That is:
[tex]f\geq F_g\\f\geq m\,*\,g\\\mu\,*\,m\,*\,\omega^2\,*\,R\geq m\,*\,g\\\mu\geq \frac{g}{\omega^2\,*\,R}[/tex]
The force of static friction to prevent the mass to slide down due to gravity, the friction force is must be equal or greater than to the gravitational force.
The force of static friction is the product of the coefficient of static friction between surface,and force applied perpendicular to the surface.
The tangential velocity,
[tex]\bold {V_t = \omega R}[/tex]
So, the force acting on the surface of the cylinder,
[tex]\bold {F= m\times a_c}\\\\\bold {F= m \times \dfrac {V_t^2 }{R}}\\\\\bold {F = m \times \dfrac {\omega ^2R2}{R}}}\\\\\bold {F = m \times \omega ^2 \times R}[/tex]
The force of friction between the block and the inner wall of the hollow cylinder,
[tex]\bold {F_f = \mu \times m \times \omega ^2 \times R}[/tex]
Therefore, the force of static friction to prevent the mass to slide down due to gravity, the friction force is must be equal or grater than to the gravitational force.
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