Answer:
If the Universe holds enough matter, including dark matter, the combined gravitational attraction of everything will gradually halt this expansion and precipitate the ultimate collapse. Over time, galaxies, then individual stars, will smash into each other more frequently, killing off any life on nearby planets.
Paula ran a total of 72meters directly toward school at a constant velocity. She ran one-third of that distance in 8seconds. What was her velocity?
Answer:
3 meters per second
Explanation:
72 divided by 3= 24 meters in 8 seconds
24/8= 3, so 3 meters per second
Help ASAP!! Three factors that affect the solubility of a substance are pressure, the type of solvent, and __________
Answer:
Volume
Explanation:
An example of a waste product of cellular respiration is
a]feces
b]oxygen
c]carbon dioxide
d]ammonia
Answer:
(C) Carbon Dioxide!
Explanation:
This is what animals, and even plants, breath out. :)
5. Find mass if a 20N force accelerates an object at 2.5
m/s/s
Hey,
QUESTION )Following the second Newton's Law :
✔ We apply : F = m x a ⇔ m = F/a with F in N, m in kg and a in m/s²
m = 20/2,5 m = 8 kgthe object therefore has a mass of 8 kg
What role is the president carrying out when he gives the state of the union address?
Answer:
The address fulfills the requirement in Article II, Section 3, Clause 1 of the U.S. Constitution for the President to periodically "give to the Congress Information of the State of the Union, and recommend to their Consideration such measures as he shall judge necessary and expedient."
Explanation:
Answer:
I think it's A. Commander in Chief
Explanation:
I need help!!!!!!!!! Somebody please help me!!!!!!!!!!!!!
What is the energy (juice) of the current measured in volts?
Please help this is about ecology. Who ever answers it first correctly I will give brainliest
A wave has a period of 2s and a wavelength of 5m. What is the speed of the wave?
Answer:
10m per Second
Explanation:
PLS HELP (50 POINTS) I WILL ALSO MARK BRAINLIEST!!!
For an investigation, a teacher dropped a metal bolt into a container of maple syrup and asked students to remove the bolt without touching the syrup. The students first tried to use a strong magnet to remove the bolt, but it remained on the bottom of the container. They finally poured the syrup into another container to get the bolt out. Which of these best describes the bolt’s physical properties?
A.
The bolt is magnetic and less dense than the maple syrup.
B.
The bot is non magnetic and less dense than the maple syrup.
C.
The bolt is non magnetic and more dense than the maple syrup.
D.
The bolt is magnetic and has the same density as the maple syrup.
Choice-C is the right one.
-- The bolt didn't react to the magnet, and just laid there. That tells you that the bolt was made of a non-magnetic material.
-- The bolt didn't float. It went straight to the bottom. That tells you that it's more dense than the fluid around it.
16. A Jet airliner is crossing the United States from New York to San Francisco going at a velocity
of 870 km/hr. West. What is its relative velocity if it is traveling through the Jet Stream's velocity of 300
km/hr. East?
A. 1170 km/hr.
B. 570 km/hr.
C. 870 km/hr
D. 300 km/hr.
Answer:C
Explanation:
A 0.78-kg blob of clay strikes a wall at speed 23 m/s. The clay comes to a stop in 0.26 s. What is the average force that the wall exerts on
the clay?
A-69 N
B- 49 N
C- 36 N
D- 55 N
Answer:
A
Explanation:
An increase of 180 degrees in Fahrenheit is equal to an increase of how many degrees in celsius?
Answer:
it is 100 degree which is boiling point in water
what is the demand for resources, such as food, water, and shelter.
What is the relationship between pitch and wavelength
Answer:
Musicians use frequency is pitch.
The shorter the wavelength, the higher the frequency, and the higher the pitch, of the sound. The shorter the wavelength, the higher the frequency, and the higher the pitch, of the sound. Hope it helps!
A car traveling at 35m/s appliance its brakes 10 seconds later it has a velocity of 5m/s what is the acceleration of the car
Answer:
a = -3 m/s^2
Explanation:
Vi = 35 m/s
Vf = 5 m/s
t = 10 s
Plug those values into the following equation:
Vf = Vi + at
5 = 35 + 10a
---> a = -3 m/s^2
how many grams are in 3 moles of helium?
Answer:
12 g
Explanation:
No of moles = [tex]\frac{mass}{mass.in.1.mole}[/tex]
But we have to find the mass, not the number of moles. So,
Mass = No. of moles × mass in 1 mole
Mass of helium = 4
Mass = 3 × 4
= 12 grams
Number of protons are equal to the number of electrons
Explanation:
the no of proton of an element is found in the inner part of the orbital of an element along with the neutron ,also knowing that this two add up to give mass no an element
where neutron+proton=mass no=nucleon no,where proton= electron, unless it carries charges call ion
how does the sun rise and set
a.earth orbit around the sun
b.The sun is center of solar system
c.earth rotates on it tilted axis and orbit around the sun at the same time
Answer:
c. earth rotates on it tilted axis and orbit around the sun at the same time
Explanation:
Earth rotation can be defined as the amount of time taken by planet earth to complete its spinning movement on its axis.
This ultimately implies that, the rotation of earth refers to the time taken by earth to rotate once on its axis. One spinning movement of the earth on its axis takes approximately 24 hours to complete with respect to the sun. Thus, this makes us to experience day and night (sun rise and sun set) due to the rotation of planet about its axis.
Hence, the sun rise and set because the earth rotates on it tilted axis and orbit around the sun at the same time
Write the formula for a partially inelastic collision and explain what all 6 variables are and the unit each is measured in. State Newton’s 3 rd Law of Motion. State the Law of Conservation of Momentum and explain it in your own way.
Answer:
i don`t get it
Explanation:
I need help!!!!!! Somebody help me please!!!!!!!!
A parallel circuit will still work as long as electricity can do what?
Can run through the circuitAnswer:
Explanation:
A coin falls off a table and is traveling to the ground. Which claim about the forces acting on the coin must be true?
(Choice A)
There is a net force on the coin.
(Choice B)
There are no forces on the coin.
(Choice C)
There is no net force on the coin.
(Choice D)
There is not enough information.
A coin falls off a table and is traveling to the ground. There is a net force on the coin which is responsible for the motion of the coin. Thus, the correct option is A.
What is Net force?The net force can be defined as is the sum of all the forces which are acting on an object. Net force acting upon an object can accelerate its mass. Some other forces also acts on a body either at rest or motion. The net force is used in a system when there is a significant number of forces acting on the object.
A coin which falls off a table and is still traveling to the ground. Then, it can be concluded that there is a net force which is acting on that coin which is responsible for the motion of the coin.
Therefore, the correct option is A.
Learn more about Net force here:
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An atom is electrically neutral.
True or False
Answer:
true
Reason for answer
it can't be false
Two charged objects have a repulsive force of 0.040 N. If the distance separating the objects is doubled, then what is the new force?
Answer:
Force will be 1/4 of the original
Explanation:
F = G m1 m2 / d^2 now change the distance to 2d
F = Gm1m2 / (2d)^2
F = 1/4 G m1 m2 / d^2 the force is reduced to 1/4 of the original
A person stands 6.00 m from a speaker, and 8.00 m from an identical speaker. What is the frequency of the second (n = 2) interference maximum (constructive)? (Hint: v= xf = 343 m/s) (Unit = Hz)
Answer: 343
Explanation: i know it sounds weird but its right
The frequency for the maximum constructive interference will be 343 Hz.
What is the interference of waves?The result of two or more wave trains flowing in opposite directions on a crossing or coinciding pathways. This phenomenon is known as the interference of waves.
The effect is the sum of the individual wave amplitudes at each site where more than one wave is present.
From the constructive interference;
[tex]\rm L_1-L_2 = 2 \lambda \\\\ 2\lambda=8-6 \\\\ \lambda= 1 \ m[/tex]
The frequency is;
[tex]\rm f= \frac{c}{\lambda} \\\\ f= \frac{343}{1} \\\\ f= 343 \ Hz[/tex]
Hence,the frequency for the maximum constructive interference will be 343 Hz.
To learn more about the interference of waves refer to the link;
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what is force ? explain in simple language!!
Answer:
This is your answer . If I'm right so,
Please mark me as brainliest. thanks!!!
Do magnets have to touch each other for a magnetic field to be present?
Answer:
no
Explanation:
A circle graph shows that one-fourth of the students in a particular school ride the bus every day. What is this equivalent measurement in radians? In degrees?
Answer:
it's 1.57... radians and 90°
As par circle graph, π/2 radian part of total number of the students in a particular school ride the bus every day.
What is circle graph?Pie charts are another name for circle graphs. The graph is shaped like a circle, with many wedges that each represent a portion of the overall.
The circle graph is commonly referred to as a pie chart since these wedges frequently resemble pie slices. The circle graph's angles are proportionate to the quantity they each represent.
According to circle graph:
Total number of student in the particular school = 2π radian.
So, one-fourth of total number of student in the particular school = 2π/4 radian
= π/2 radian.
Hence, according to circle graph, π/2 radian part of total number of the students in a particular school ride the bus every day.
Learn more about circle graph here:
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Tarzan is swinging back and forth
on a 6.25 m long vine. What is the
period of his oscillation?
(Unit = s)
Answer:
5.02s
Explanation:
I got it right in acellus :)
The period of the oscillation when Tarzan is swinging back and forth so it should be 5.01 seconds.
Calculation of the period:Since
Length L = 6.25 m
g = 9.8 m/s²
So,
T = 2π√(L/g)
T = 2π√(6.25 / 9.8)
T = 5.01 sec
Hence, The period of the oscillation when Tarzan is swinging back and forth so it should be 5.01 seconds.
Learn more about oscillation here: https://brainly.com/question/26044136
Is pushing a car across a smooth road positive, negative or zero work?