Which four compounds are supersaturated when 60g are dissolved at 90 degrees C?
LOOK AT THE PICTURE BELOW!
Answer:
1 2 3 and thats it
Explanation:
Which element is represented by the atomic model below
A. Calcium
B. Neon
C. Oxygen
D. Helium
Answer:
b
Explanation:
because f its electronic configuration 2:8 indicating that it has 8 electrons in its outer most energy level
A central air conditioner in a typical American home operates on a 220-V circuit and draws about 15 A
of current
a. Determine the power rating of such an air conditioner.
b. Determine the energy consumed (in kW.hr) if operated for 8 hours per day.
c. Determine the monthly cost (31 days) if the utility company charges 13 cents per kW.hr.
Answer:
Find answers below.
Explanation:
Given the following data;
Voltage = 220V
Current = 15 A
a. To find the power;
Power = current * voltage
Power = 15 * 220
Power = 3300 Watts
b. To find the energy;
Time = 8 hours = 60 * 60 * 8 = 28800 seconds
Energy = power * time
Energy = 3300 * 8
Energy = 26400
Energy = 26.4 Kwh
c. Cost = 13 cents
Cost = 13 * 31 * 26.4
Cost = 106392 cents
Match the following. Match the items in the left column to the items in the right column.
1. March 21
7
North Pole
2. Arctic
vernal equinox
3. December 21
longitude
4. meridians
lowest point on earth
5. September 23
latitude
6. Greenwich, England
South Pole
7. Antarctic
winter solstice
8. Marianas Trench
autumnal equinox
9. parallels
Prime Meridian
10. International Date Line
180th meridian
Answer:
March 21 = Vernal Equinox
Artic = North Pole
December 21 = Winter Solstice
Meridians = Longitude
September 23 = Autumnal Equinox
Greenwich, England = Prime Meridian
Antarctic = South Pole
Marianas Trench = Lowest point on earth
Parallels = Latitude
International Date Line = 180th Meridian
Explanation:
what does 3F means?
Please help me with this.....
Answer: Fitness, Fun & Friendship
Explanation:
A 3.0-kilogram steel block is at rest on a frictionless, horizontal surface. A 1.0-kilogram lump of clay is propelled horizontally at 6.0 meters per second toward the block, as shown in the diagram below.
Answer:
1.5 m/s
Explanation:
Upon collision, the clay and steel block stick together and move to the right with a speed of 1.5m/s.
What is conservation of momentum principle?When two bodies of different masses move together each other and have head on collision, they travel to same or different direction after collision.
The external force is not acting here, so the initial momentum is equal to the final momentum. For inelastic collision, final velocity is the common velocity for both the bodies.
m₁u₁ +m₂u₂ =(m₁ +m₂) v
Substitute the values for m₁ = 3kg, m₂ =1kg, u₁ =0 and u₂ =6 m/s, then the final velocity will be
3x0 +1x6 = (3+1)v
v = 1.5 m/s
Thus, the clay and steel both have final velocity is 1.5 m/s.
Learn more about conservation of momentum principle
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PLEASE HELP 15 POINTSexplain properties and importance of light and how it separates into colors
Answer:
It is not a property of light. It is your eyes and brain.
Specifically, the three kinds of cone cells in our eye that are sensitive to different ranges of the electromagnetic spectrum. The fact that there are three means that color is three dimensional, and is the reason the pure colors form a circle even though the spectrum of wavelengths is linear.
Visible light is part of the electromagnetic spectrum; light waves of different frequencies and wavelengths are distinguished as colors by the human eye. A prism can separate the colors of white light (dispersion) because different frequencies of light have different refractive indices for a given material.
1pt If an object is moving at a constant velocity, it means that....
A. no net force is acting on it
B. a constant force is acting on it in the direction of its motion
c. a constant force is acting on it in the opposite direction of its motion
D. several forces are acting on it, but one force is greater than the others
Answer:
thecool me
Explanation:
A bullet with a mass of 0.040 kg collides inelastically with a wooden block of mass 1.5 kg, initially at rest. After the collision, the bullet along with the block has a speed of 1.0 m/s. Calculate the initial speed of the bullet.
Answer:12.43 m/s
Explanation:
Exam
You push on a shovel then the
shovel pushes on dirt. The force
you apply to the shovel is the
input force. The shovel then
pushing on the dirt is known as
what?
A. Output work
B. Input work
C. Input force
D. Output force
The first one on gets brainilest
Answer:
thanks
Explanation:
A small canon is placed on top of a fortification the cannon ball leaves the muzzle of the canon with a speed of 85 m/s
Answer:
Speed of cannonball just before it hits the ground is 90.77 m/s
Explanation:
Complete Question
A small cannon is placed on top of a fortification. the cannonball leaves the muzzle of the cannon with a speed of 85 m/s at an angle of 25°c above the horizontal. just before the cannonball hits the ground, the vertical component of velocity is 48 m/s downward. what is the speed of the cannonball just before it hits the ground? ignore air resistance.
Solution
Given
Speed = 85 m/s
The angle = 25 degrees
When it will hit the ground, then vertical velocity = 48 m/s
However, in the projectile motion, the horizontal component will not change
Vr = V cos (theta) = 85 * cos25
Speed of cannonball just before it hits the ground is
V’ = Sqrt (48^2 + (85 * cos 25)^2) = 90.77 m/s
Oxygen has 6 valence electrons. how many hydrogen atoms (who have 1 valence electrons) can bond with it? remember the octet rule.
Answer:
Oxygen starts with six valance electrons and ends with six valance electrons but after bonding has parts of the densities of 8 electrons
Explanation:
Chemical bonding does not increase the valance electrons. Oxygen has 6 valence electrons. Bonding is sharing of valance electrons
The electron density of two of the valance electrons of Oxygen are shared with the Hydrogen atoms. The Hydrogen atoms is turn share part of the electron density of their single electron with Oxygen.
This means that there are parts of 8 electron densities around the Oxygen. This does not increase the number of valance electrons of Oxygen. (Note the sharing is very unfair, Oxygen gets more than its
share of the electron densities of the two electrons used for the chemical bond.
Explanation:
Kevin bikes to the pizza place for lunch. He rides 1 km east, 3 km north, 4 km west, and finally 3 km south. What was his displacement?
Answer:
3kmExplanation:
To get the displacement, we will make use of the expression;
[tex]D = \sqrt{(\sum d_x)^2+(\sum d_y)^2}[/tex]
Taking the sum of the distances along the x;
dx = 1km - 4km
dx = -3km
Taking the sum of the distances along the y axis
dy = 3km - 3km
dy = 0km
Substitute into the formula above;
[tex]R = \sqrt{(-3)^2+(0)^2}\\R = \sqrt{9} \\R = 3km\\[/tex]
Hence his displacement is 3km
refractive index of water is 1.3. calculate the speed of light in water.
Answer:
The speed of light is faster in water. The Refractive index of water is 1.3 and the refractive index of glass is 1.5. From the equation n = c/v, we know that the refractive index of a medium is inversely proportional to the velocity of light in that medium. Hence, light travels faster in water.
Answer:
[tex]2.31*10^{8} m/s[/tex]
Explanation:
Employ the formula attached below,
n = c/v
1.3 = (3.0*10^8)/ x
(solve for x)
x= (3.0*10^8) / 1.3
x= [tex]2.31*10^{8} m/s[/tex]
Ejercicio 5. En el año 1985 fue puesto en órbita el primer satélite de México, el Morelos 1. Dicho satélite orbitaba la Tierra a una altura de 35 800 km (35.8 x10^6 m).
a) Obtenga el radio de la órbita del satélite (r = R +h)
b) Calcule la velocidad del Morelos 1
c) Obtenga el periodo de rotación en horas
d) ¿Cuál es el valor de la intensidad del campo gravitacional en la órbita del Morelos 1?
Answer:
a) Obtenga el radio de la órbita del satélite (r = R +h)
Explanation:
Please answer this science question NO LINKS !!!!
A student says an organism that is both a first level and second level consumer is an ominvore. Is that student correct? Explain.
PLZ HELP ILL MARK BRAINLIEST!!!
A species introduced in a new habitat can cause problems by:
A. decreasing food supplies for native species
B. over reproducing because they have no predators
C. feeding on native specie
D. All of the above
in an atom what is the number of protons that equal number
Answer:
The number of protons in the nucleus of the atom is equal to the atomic number (Z). The number of electrons in a neutral atom is equal to the number of protons. The mass number of the atom (M) is equal to the sum of the number of protons and neutrons in the nucleus.
Explanation:
help for brainliest!
In mirrors all real images are?
A. smaller than the object B. inverted
C.upright
D. virtual
A “real” image occurs when light rays actually intersect at the image, and become inverted, or turned upside down. ... In flat, or plane mirrors, the image is a virtual image, and is the same distance behind the mirror as the object is in front of the mirror. The image is also the same size as the object.
Which change would create light?
A. An electron in an atom jumping from a lower energy state to a higher one.
B. Two electrons from the same atom colliding
C. An electron in an atom jumping from a higher energy state to a lower one.
D. Two electrons from two different atoms colliding.
Answer:
Im not 100% sure but i think the answer is A. An electron in an atom jumping from a lower energy state to a higher one.
Explanation:
lmk if its wrong
The machine in the figure is ideal and an effort force of
7.0 N just lifts a 14.0 N box situated 0.75 m from the
pivot, what is the distance from the pivot point to
where the effort force is exerted?
Answer:
1.5 m
Explanation:
Let the distance from the box to the pivot be c.
Let the distance from the pivot to the effort be y.
From the question given above, the following data were obtained:
Effort force (Fₑ) = 7 N
Force of resistance (Fᵣ) = 14 N
Distance from the box to the pivot (c) = 0.75 m
Distance from the pivot to the effort (y) =?
Clockwise moment = Fₑ × y
Anticlock wise moment = Fᵣ × c
Clockwise moment = Anticlock wise moment
Fₑ × y = Fᵣ × c
7 × y = 14 × 0.75
7 × y = 10.5
Divide both side by 7
y = 10.5 / 7
y = 1.5 m
Therefore, the distance from the pivot to the effort is 1.5 m
what type would never freeze
Answer:
Ummmm Human's I don't understand your answer
Explanation:
Have a Nice Day
who is a producer that produces a product that is sold at walmart? please answer thank you!! <3
Answer:
Con Agra and Sare Lee
Explanation:
What is the current in a 110V circuit with resistance is 10Ω?
Answer:
using V= IR
I= 11Ampere
Which of the following football players have the same momentum?
Ted: mass = 60 kg, velocity = 2.0 m/s
Todd: mass = 80 kg, velocity = 1.7 m/s
Tom: mass = 90 kg, velocity = 1.5 m/s
Tim: mass = 100 kg, velocity = 1.2 m/s
a. Ted and Todd
b. Todd and Tim
c. Ted and Tim
d. None of the above.
Answer: Ted and Tim
Explanation:
The football players Ted and Tim have the same momentum, which is 120 kg m/s. Hence, option C is correct.
What is momentum?The momentum is the result of a particle's velocity and mass. Force and motion, meaning it has both magnitude and direction. According to Isaac Newton's second equation of motion, the force acting on a particle equals the time rate of increase of momentum.
The impulse, which is the product of the force and the intervals (the impulse), is equal to the difference in momentum, according to Newton's 2nd law, if a steady force operates on a particle for a specific amount of time. On the other hand, a particle's momentum is the amount of time needed for a consistent action to fight it to rest.
As per the given information in the question,
The momentum of Ted is,
p = 60 × 2 = 120 kg m/s
The momentum for Todd is,
p = 80 × 1.7 = 136 kg m/s.
The momentum of Tom is,
p = 90 × 1.5 = 135 kg m/s and,
The momentum for Tim is,
p = 100 × 1.2
p = 120 kg m/s.
After comparing the momentum of all the players, Ted and Tim have similar momentum.
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mechanical advantage is always less than velocity ratio,why?
because mechanical advantage decreases due to the friction and weight of moving parts of the machine whereas the velocity ratio remains constant
hope it helps you
How much force will your need to move a 200 pound refrigerator onto a truck bed that is five feet high if you use a 10 foot inclined plane?
Answer:
P = 100 lb
Explanation:
For an ideal machine:
[tex]Work\ In = Work\ Out\\(P)(L)=(W)(H)[/tex]
where,
P = Effort = Input Force = ?
L = Effort Arm = Length of inclined plane = 10 ft
W = Load to be lifted = 200 lb
H = Load Arm = Height = 5 ft
Therefore,
[tex]P(10\ ft) = (200\ lb)(5\ ft)\\\\P = \frac{(200\ lb)(5\ ft)}{10\ ft}[/tex]
P = 100 lb
Which must be tested to see if it is supported?
A.) a problem
B.) a variable
C.) a hypothesis
D.) a data collection