Cabbage juice can be used as a pH indicator. Using the above chart, choose all of the statements that are correct
Answer:
Google it muh homie
Explanation:
Explanation:
lemon juice is a strong acid and would turn cabbage juice red
a sample rainwater turns the cabbage juice violet indicating it is slightly acidic
A Physics question regarding circuits and electricity.
The pressure of water at the bottom of a well is _________ than at the surface of the pond.
Answer:
Greater
Explanation:
When you go deeper in water, the presure increases, the deeper you go, so it would be greater in a well then the surfce of a pond. Hope this helps!
What are the two ways to create plasma?
Answer:
Plasma can be artificially generated by heating a neutral gas or subjecting it to a strong electromagnetic field to the point where an ionized gaseous substance becomes increasingly electrically conductive.
Answer:
By heating a natural gas
Explanation:
Write the formula for kinetic energy that uses force in its equation. Calculate the kinetic energy generated when a 2500 N force is applied to a car when moving it 200 m. Show work.
Answer:
500000 J
Explanation:
ΔKE =Work = F*d = 2500 N * 200 m =500000 J
A solar flare is a very high energy event on the surface of the sun. Which wavelength is best to observe such an event?
- visible light
-microwaves
-xray
-infrared
What happens at the condensation point?
Answer:
Dew point is the temperature at which condensation happens. ... When warm air hits the cold surface, it reaches its dew point and condenses. This leaves droplets of water on the glass or can. When a pocket of air becomes full of water vapor, clouds form.
Explanation:
Answer:
Dew point is the temperature at which condensation happens. ... When warm air hits the cold surface, it reaches its dew point and condenses. This leaves droplets of water on the glass or can. When a pocket of air becomes full of water vapor, clouds form.
Explanation:
The temperature at which a material changes from a gas to a liquid; the same as the boiling point. Condensation is the process by which water vapor (gas) in the atmosphere turns into water (liquid state). It is the opposite of evaporation. ... As the surrounding temperatures fall (cool), the water vapor turns into very tiny particles of water and ice crystals.
In a physics motion study, students established a frame of reference for measurements. Which of the following is their most likely choice?
A. time since the beginning of the class period
B. mass as a ratio to that of the same volume of water
C. distances from two walls and the floor
D. temperature at the start of the motion
the magnification priduced by a spherical mirror is +1/4.what type of image is formed?
Explanation:
As the magnification is positive , thus the image formed is inverted and real
A 31 g block of ice is cooled to -76°C. It
is added to 592 g of water in an 75 g copper
calorimeter at a temperature of 21°C.
Find the final temperature. The specific
heat of copper is 387 J/kg • °C and of ice is
2090 J/kg . °C. The latent heat of fusion of
water is 3.33 x 10 J/kg and its specific heat
is 4186 J/kg °C.
Answer in units of °C.
Answer:
Final temperature is approximately 18.09⁰C
Explanation:
Solution is in the attached pictures
A 200-kg boulder is 1000-m above the ground. what is its potential energy?
Explanation:
PE = mgz = 200 * 9.81 *1000 = 1962 KJ
A 200-kg boulder is 1000-m above the ground. 1962 KJ is its potential energy.
What is potential energy ?The term potential energy is defined as the stored energy that depends upon the relative position of various parts of a system. Because it has a potential to do work when released it is called as potential energy.
A spring has more potential energy when it is stretched. Any object that is stretched from its resting position has stored energy, so it is called potential energy.
The SI unit of electric potential is represented by volt (V), and it can also be written as Joule per Coulomb. The unit of potential energy is joules.
Potential energy = mgz
= 200 × 9.81 × 1000
= 1962 KJ
Thus, A 200-kg boulder is 1000-m above the ground. 1962 KJ is its potential energy.
To learn more about the potential energy, follow the link;
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A 1500 Kg automobile is traveling at a velocity of 100 m/s. Is its energy potential or kinetic? How much energy does it possess? (Remember to convert kg to g)
Answer:
1.) Kinetic energy
2.) K.E = 7500000000 J
Explanation: Given that a 1500 Kg automobile is traveling at a velocity of 100 m/s.
An object possesses maximum potential energy when it is at rest
And maximum kinetic energy on motion. Since the automobile is travelling with a speed of 100 m/s, its energy is kinetic.
The amount of energy possessed, will be achieved by using formula
K.E = 1/2MV^2
Where
M = 1500kg
To convert it to g, multiply it by 1000
M = 1500 × 1000 = 1500000
V = 100 m/s
K.E = 1/2 × 1500000 × 100^2
K.E = 0.5 × 1500000 × 10000
K.E = 7500000000 J
Which of the following is a homogenous mixture?
Answer:
Blood
Explanation:
Homogenous means the same type and a box with toys, spaghetti and meatballs, and trail mix all have variety.
Answer:
B is the correct answer
Our solar system is said to be a Heliocentric model. What is at the center of our solar system?
A)
An exploding star called a Supernova
B)
A star composed of hydrogen and helium
)
A star composed of nitrogen and helium
D)
A black hole where a massive star collapsed
Answer:
B) A star composed of hydrogen and helium
Explanation:
This star is called the sun and is made up of about 70% hydrogen and 28% helium.\
_ is (are) the type of electromagnetic wave(s) with a wave length between 700 and 400 billionths of a meter.
Answer:
Visible Spectrum is the type of electromagnetic wave with a wave length between 700 and 400 billionths of a meter.
Sound is a type of mechanical wave and must have a medium through which to travel. Sound will move at different speeds when which of the following occurs?
A. The sound is fully absorbed in an object.
B. The sound moves from air to water.
C. The sound pitch increases.
D. The sound is reflected off a surface.
75 points!
In a particular chemical reaction, the energy of the reactants is 30 kJ and the energy of the products is 5 kJ. The maximum energy of the system is 40 kJ.
A. Sketch a potential energy diagram for this reaction. Make sure to label the energy of the reactants, the energy of the products, the activation energy, and the enthalpy change for the reaction.
B. What is the activation energy for this reaction?
C. What is the enthalpy change for this reaction?
D. Is this reaction endothermic or exothermic? Explain your answer in two ways: first, using the energy values, and second, by referring to the shape of the graph.
Answer:
The activation energy of a chemical reaction is the energy require to form the activated complex and the activated complex then converted to product. The activation energy is always positive for both endothermic and exothermic reactions.
Explanation:
pls if im worng add a star pls
Answer fast, please.
ASAP pls answer Right please I have soooo much work they overwork me
1. When an object moves it acquires
(a) friction
(b) traction
(d) speed
(c) energy of motion
When an object moves it acquires energy of motion. An thing that is in motion gains energy of motion, often known as kinetic energy. The energy an item possesses as a result of its motion is known as kinetic energy.
The item accumulates kinetic energy when it moves faster or at a specific velocity. The mass and speed of the item affect the quantity of kinetic energy.
Kinetic energy is calculated as KE = 0.5 * mass * velocity * 2. Because of the direct connection between an item's speed and the energy required to move it, the kinetic energy of an object grows exponentially as its velocity rises.
To know more about energy :
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how does the electric force between two charged particles change if the distance between them is increased by a factor of 3? a. it is reduced by a factor of 3 b. it is increased by a factor of 3 c. it is increased by a factor of 9 d. it is decreased by a factor of 9
Answer:
It is reduced by a factor of 9
Suppose that you, with a mass of 48kg, is standing on frictionless roller skates when someone throws you a 2.50kg mass with a velocity of 15m/s and you catch it. What will be your resultant velocity?
Answer:
v = 0.74 m / s
Explanation:
We can solve this exercise using the conservation of the moment
initial instant. Before the crash
p₀ = m v
where m is 2.50 kg and its velocity v₀ = 15 m / s
final moment. After catching the dough
[tex]p_{f}[/tex] = (m + M) v
As the system is made up of the mass and the person, all the forces during the impact are internal, therefore the moment is conserved
p₀ = p_{f}
m v₀ = (m + M) v
v = m / (m + M) v₀
we calculate
v = 2.5 / (2.5 + 48) 15
v = 0.74 m / s
I need an answer ASAP .....
Why Is total internal reflection important in the use of fiber optics?
Answer:
Hope this helped :
Explanation:
When light passes from a medium with one index of refraction (m1) to another medium with a lower index of refraction (m2), it bends or refracts away from an imaginary line perpendicular to the surface (normal line). As the angle of the beam through m1 becomes greater with respect to the normal line, the refracted light through m2 bends further away from the line.
At one particular angle (critical angle), the refracted light will not go into m2, but instead will travel along the surface between the two media (sine [critical angle] = n2/n1 where n1 and n2 are the indices of refraction [n1 is greater than n2]). If the beam through m1 is greater than the critical angle, then the refracted beam will be reflected entirely back into m1 (total internal reflection), even though m2 may be transparent!
Terry can ride 30 miles in 2 hours. If his riding speed is
reduced by 3 mph (mile/hour), how far can he ride in 1.7 hours?
miles
Answer: 20.4 miles
Explanation:
Here we need to use the equation:
Velocity = Distance/Time.
Initially we have that he can travel 30 miles in 2 hours, so the velocity is:
V = 30mi/2h = 15mph
Now, we reduce the velocity by 3 mph, so the new velocity is 15mph - 3 mph = 12mph.
Now we want to know the distance traveled in 1.7 hours with this velocity, this is.
Velocity*Time = Distance
12mi/h*1.7h = 20.4 miles
What effect does force have on the motion of an object?
Answer:
When a force acts on an object that is stationary or not moving, the force will cause the object to move, provided there are no other forces preventing that movement. If you throw a ball, you are pushing on it to start its movement. If you drop an object, the force of gravity causes it to move.
hope this helps :)
Plz Help! Will give brainliest!!
If the work output of a simple machine is 40 J and the work input is 50 J, the percent efficiency is _____%.
A. 5/4
B. 10
C. 80
D. 90
Answer: 80%
Explanation:
Answer:
C.80
Explanation:
can someone please help with this
Pie
Sit
6. When you climb a flight of stairs, you are moving your body weight (a
force) up a certain distance (the vertical height from the bottom to the
top stair). In which case does the amount of work you do increase?
Explain your answer.
a. You run up 10 stairs then you run up 50 stairs.
b. You walk slowly up 10 stairs and then you run up 10 stairs really fast.
Answer:
In part (a)
Explanation:
Work done when climbed upstairs is explained in terms of change in potential energy.
Work=Δ(Mass.gravity.height) or W=m.g.h
Mass and gravity are constant during motion but height differs in part a from part b. The speed of climbing doesn't affect the value of work.
Height (in terms of the number of stairs) in part a is 40 stairs more than in part b.
Any two differences between SI units and derived units
help me...
Answer:
SI unit
1) SI unit does not depend on other.
2) they have their own identity.
Derived unit
1) They depend upon other or fundamental unit.
2) they don't have their own identity.
What would scorch marks on fabric near bullet wound indicate?
Answer:
Often loose fibers surrounding a contact hole show scorch marks from the flame discharge of the weapon. Some synthetic fibers may be melted. The blowback of muzzle gases may produce a star shaped tear pattern around the hole.
Explanation:
