Answer: The time differences become bigger.
Explanation: Suppose a primary and secondary wave both travel a distance of 4,000 km before they are picked up by a seismograph.
Your science class is going to play a game of tug-of-war and you need to divide up the teams. There are 11 people participating. If you want equal teams, how would you decide who is on which side and why? Use what you have learned about Newton's Laws of motions to explain.
Answer:
5
Explanation:
Li and Raj are playing football. They take turns trying to run past each other with the football. Li weighs 125 pound and Raj weighs 175 pounds. Li discovers that if he changes direction quickly when running, he can always dodge out of the way before Raj can tackle him.
Why is Li able to avoid Raj’s tackle? Choose the best description.
Answer:
Li has less mass and therefore less inertia, so he can change his motion more easily than Raj.
Explanation:
Answer:
Li has less mass and therefore less inertia, so he can change his motion more easily than Raj.
Explanation:
Where is a bibliography or works-cited list placed within a paper or report?
in the introductory material
at the bottom of each page
at the end
in the appendix
Answer:
at the end
Explanation:
Answer:
at the end of the page
Explanation:
leave a rating for my dying soul please. :)
The nucleus of most atoms is composed of which of the following sub-atomic particles? (A) tightly packed neutrons
(B) tightly packed protons and neutrons
(C) loosely connected protons and clectrons. (D) tightly packed protons.
Answer:
(B) tightly packed protons and neutrons
Explanation:
Nucleus of any atom is the dense central part of any atom.It consists of two sub-atomic particle namely proton and neutron.These sub-atomic parts are tightly packed in nucleus which makes the nucleus dense .This dense nucleus is responsible for most of the mass of atom.The atomic mass for any atom is decided by sum of the mass of proton and neutronThus, correct answer is
(B) tightly packed protons and neutrons
The nucleus of most atoms is composed of tightly packed protons and neutrons
The nucleus of an atom possess the following properties:
The nucleus are positively charged The nucleus are surrounded by a cloud of negatively charged electronsThe nucleus are very dense and small .The nucleus is a collection of particles called protons, which are positively charged, and neutrons, which are neutralThe nucleus contributes to most of the weight of an atom.Therefore, the nucleus is compose of tightly packed protons and neutrons
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1. Compare pressure that fluid applies to the bottom of a glass with the pressure it applies to the sides of the glass
When the velocity increases does the kinetic energy increase or decrease ?
Because the mass is constant, if the velocity is increased, the kinetic energy must also increase.
sue is running down the street at a nice constant 4 m/s. She travels for 200 seconds. How far did she go?
Answer:
800 meters
Explanation:
4 x 200 is 800 meters.
Please help! I have no idea what to do.
Jack weighs 159 pounds on Earth. What is his mass, in kg? Show your work.
Thank you!
2. A flower pot falls from a balcony ledge to the sidewalk below. If the flower pot
falls a distance of 30m, find a) the time it takes to hit the sidewalk b) the velocity
when it hits the sidewalk
Answer:
a) 2.5s
b)24.2m/s
Explanation:
a) s = ut +1/2gt^2
Where u=0
Make t the subject and solve
b) v^2=u^2+2gs
Where u =0
Make v the subject and solve
easy 8th grade question plz help
Answer:
1. B
2. A
3. C
Explanation:
You want to figure out which brand of microwave popcorn pops the most kernels so you can get the most value for your money. You test different brands of popcorn to see which bag pops the most popcorn kernels. What is the dependent variable?
A. Number of kernels popped
B. The brand of microwave
C. The brand of popcorn
D. The type of popcorn
Answer:
A
Explanation:
I think the number of kernels popped is depended on the brand of the microwave or it can be the brand of popcorn but the independent variable is the cause and the dependent variable is the effect
The dependent variable is the Number of kernels popped option (A) Number of kernels popped is correct.
What is dependent variable?In mathematical modeling, statistical modeling, and experimental sciences, there are dependent and independent variables.
Dependent variables get their name because, during an experiment, their values are investigated under the presumption or requirement that they are dependent on the values of other variables according to some law or rule.
The brand of microwave or popcorn brand may affect how many kernels pop, but the independent variable is the cause and the dependent variable is the outcome.
Thus, the dependent variable is the Number of kernels popped option (A) Number of kernels popped is correct.
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2. A sphere has a radius of 5.00 cm. with an uncertainty of 5%,
a) what is the percent uncertainty of the volume? _______%
b) What is the volume of sphere with absolute uncertainty? _____ +/ _____cm^3
Answer:
The percent uncertainty of the volume=[tex]\frac{15.70}{523.59} \times 100=2.99\%[/tex]
The volume of sphere with absolute uncertainty=[tex]523.59 \pm 15.7 cm^3[/tex]
Explanation:
Radius of sphere = 5 cm
Radius with uncertainty r'= [tex]5 \pm 0.05[/tex]
Volume of sphere = [tex]\frac{4}{3} \pi r^3=\frac{4}{3} \pi (r')^3[/tex]
[tex]V=\frac{4}{3} \pi (r')^3\\\frac{dV}{dr'}=4\pi (r')^2[/tex]
Where dV is the uncertainty in volume
dr' is the uncertainty in radius
[tex]dV=4\pi (r')^2 dr'\\dV=4 \pi (5)^2(0.05)\\dV=15.70\\V=\frac{4}{3} \pi (r')^3=\frac{4}{3} \pi (5)^3=523.59[/tex]
The percent uncertainty of the volume=[tex]\frac{15.70}{523.59} \times 100=2.99\%[/tex]
The volume of sphere with absolute uncertainty=[tex]523.59 \pm 15.7 cm^3[/tex]
Ecology is the study of
O Genetics
O Organisms and their environment
O Human Anatomy
O Cells
Answer:
Organisms and their environment
What is the relationship between mass and kinetic energy?
Answer:
Direct relation
Explanation:
When an object of mass m is moving with some velocity v, it will have kinetic energy. It is possessed by an object whenever an object is in motion. It can be given by the below formula.
[tex]E_k=\dfrac{1}{2}mv^2[/tex]
It is very clear that the kinetic energy of an object is directly proportional to its mass. When the mass increases, its kinetic energy increases directly.
Which particle (proton, neutron, or electron) has a positive charge?
Electronegativity affects the strength of intermolecular forces. A very electronegative atom will create a stronger negative charge . True or false
Answer:
Electronegative atom will create a stronger negative charge is true.
Explanation:
Given that,
Electronegativity affects the strength of intermolecular forces.
We know that,
Electronegativity :
Electronegativity is a ability of an atom, shared electron to itself.
In periodic table,
When we move left to right in period then the electronegativity increases.
When we move up to down in a group then the electronegativity decreases.
We know that,
The intermolecular forces are dipole-dipole interactions which is the strongest intermolecular force of attraction.
If the electronegativity of atom is more, then the atom gain negative charge.
When the attraction force is more in atoms then the electronegative will be more.
Hence, Electronegative atom will create a stronger negative charge is true.
A penny is dropped from a building window. If it takes 1.1 s for it
to hit the ground, how high up is the window?
a 150 m
b 2 m
C 16 m
d 6 m
Answer:6m
Explanation:
I guessed the answer and it was right. It was not the tall ones like 16 or 150 because it only took 1.1 second
Given that,
A penny takes 1.1 seconds to hit the ground.
To find,
How high up is the window?
Solution,
When the penny is dropped, its initial velocity is equal to 0 i.e.[tex]u=0[/tex]. The second equation of motion is used to find the relation between position and time. The second equation of motion is :
[tex]s=ut+\dfrac{1}{2}at^2[/tex]
Where
s is the distance
a is acceleration
Here, s = the height of the window from the ground and a = g i.e. acceleration due to gravity
So,
[tex]s=\dfrac{1}{2}gt^2[/tex]
Put all the values,
[tex]s=\dfrac{1}{2}\times 9.8\times (1.1)^2\\\\s=6.05\ m[/tex]
or
[tex]s=6\ m[/tex]
Answer:
The window is [tex]6\ m[/tex] high. The correct option is (d).
Reference:
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there are 2 speed cameras,one in area where the speed limit is 30km/h,and another in area where the speed limit is 50km/h,IN WHICH ONE WILL THERE BE A SMALLER TIME INTERVAL BETWEEN THE PHOTOGRAPHS,explain your answer.
(help)
Answer:
Where speed limit of speed camera is 50 km/h.
Explanation:
Speed cameras work on the principal that photos reflected from the moving car have a higher or lower frequency. This is the Doppler principal. In a car traveling at the speed of light, the waves/particles will not be able to catch up with that car thus no photon will reflect back to the receiver/speed camera thus no speed will be record. Such a speed is impossible to achieve due to the amount of infinite energy expenditure required. This means if the speed is higher and approaching that of light, the frequency of reflected photons will be very high causing high amounts of energy that could damage the speed camera and cause detection. When the car travels at a higher speed, the photos frequency is high thus more energy they will carry and high chances of the vehicle being detected. This means the time interval of photos taken will be smaller.
describe liquids and GASSES IN TERMS OF THERE VOLUME AND SHAPES
Answer:
Explanation:
liquids have definite volume
liquids do not have definite shape. The take the shape of the container in which they are kept.
gases do not have definite volume.
gases do not have definite shape. They take the shape of the container in which they are kept.
Hope this helps
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Stay safe!
Explanation:
Liquids- Have definite volume
No definite shape(takes the shape of the container)
Gases- No definite volume
No definite shape(takes the shape of the container)
if a car start from rest at an initial velocity and accelerate uniformly from rest at 18 m\s square what will be the actual amount if the car stops at 500.
Answer:
initial velocity is 10.0 m/s and it accelerates at2.00 m ...
Explanation:
What is the mechanism that allows species to change over time?
Answer:
Evolution, mutation of genes
Explanation:
Evolution is the primary reason of undergo changes in speicies.There is also another reason why, which is the genetic mutation a creature has, like a toad becomes albino.
Why violet has the strongest energy?
Answer:
Explanation:
Because violet waves have the shortest wavelength of the visible light spectrum, they carry the most energy.
b) What is work? Write down the types of work.
Please help me
If a circuit has a current of 0.25 A and a voltage of 3 V, how much resistance is in the circuit? A 0.083 ohms B 0.75 ohms C 1.5 ohms D 12 ohms
Answer:
The resistance in the circuit is 12 ohm.
(D) is correct option
Explanation:
Given that,
Current = 0.25 A
Voltage = 3 V
We need to calculate the resistance
Using ohm's law
[tex]V=IR[/tex]
[tex]R=\dfrac{V}{I}[/tex]
Where, V = voltage
I = current
R = resistance
Put the value into the formula
[tex]R =\dfrac{3}{0.25}[/tex]
[tex]R=12\ ohm[/tex]
Hence, The resistance in the circuit is 12 ohm.
(D) is correct option
Does the moon control the waves in the ocean?
Answer:
no don't think so
Explanation:
JESUS CHRIST controls everything 100IQ
No, the moon does not directly control the waves in the ocean. The primary factors that influence the formation of waves in the ocean are wind and the interaction between wind and the water's surface.
The moon, however, does play a significant role in influencing the tides, which are the periodic rise and fall of the ocean's surface.
The gravitational force exerted by the moon, as well as the sun to a lesser extent, creates tidal bulges on the Earth. As the Earth rotates, these tidal bulges move around the planet, resulting in the daily cycle of high tides and low tides.
The gravitational pull of the moon is stronger on the side of the Earth facing the moon, causing a high tide, while on the opposite side, a high tide also occurs due to the centrifugal force resulting from the Earth's rotation. The areas in between experience low tides.
While tides can affect the height and intensity of ocean waves near the coastlines, the actual formation and behavior of waves are primarily driven by wind patterns, water depth, and other factors such as underwater topography.
Waves are generated when the wind transfers its energy to the water's surface, creating oscillations that propagate as waves. These waves can travel vast distances across the ocean, even in the absence of tidal influences.
In conclusion, while the moon's gravitational pull influences the tides, it does not directly control or generate the waves in the ocean.
Waves are primarily driven by wind and other factors, whereas tides are the result of gravitational forces acting on the Earth's oceans.
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Say you throw a ball straight up into the air and catch it again. The ball reaches a height of 5 m up from your hand before it falls back down and you catch it. The ball is in flight for 2 seconds of time. Determine the ball’s... average velocity average speed
Explanation:
Given that the heigth up is 5m
then the
distance up = 5m
distance down= 5m
time taken up= 1sec
time taken down= 1sec
average speed= (5+5)/1+1= 10/2= 5m/s
hence the speed up = 5m/s
speed down = 5m/s
average voelocity= 5+5/2 = 10/2= 5m/s
Which newton's law would best go with doing push ups?
Answer:
Newton's Third Law
Explanation:
According to Newton's third law of motion, forces always act in equal but opposite pairs. Another way of saying this is for every action, there is an equal but opposite reaction. This means that when you push on a wall, the wall pushes back on you with a force equal in strength to the force you exerted.
If you were to push on the wall with a force of 100N, how much force would the wall push back towards you?
Answer:
100n
Explanation:
Answer:
-100N
I hope this helps!
Kind of energy that an object has due to its motion.
Answer:
The energy an object has due to its motion is called kinetic energy
Explanation:
Factors Affecting Kinetic Energy: the kinetic energy of an object depends on both its speed and its mass.
Answer:
kinetic energy
Explanation:
In physics, the kinetic energy (KE) 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. Having gained this energy during its acceleration, the body maintains this kinetic energy unless its speed changes. The same amount of work is done by the body when decelerating from its current speed to a state of rest.
What does WNBA stand for
Answer:
Women's national basketball association
Explanation:
Answer: womens national basketball association
Explanation: my dream
