Answer:what do you need to know
Explanation:
what are the condition required work to be done
Answer:
The first is that the object moves
I NEED HELP I AM SO CONFUSED, WILL GIVE BRAIN.
A stone is dropped from the roof of a building. It took 5 s for the stone to reach the ground. What is the height of the building?
Answer:
[tex]resolving \: \\ (\downarrow_{ + }) \: s = ut + \frac{1}{2} g {t}^{2} \\ u = 0 ,\: g = 9.81m. {s}^{ - 2} , \: t = 5s \\ s =h= \frac{1}{2} g {t}^{2}, = \frac{1}{2} (9.81){5}^{2}\\=4.9\times25 \\ h=122.6m[/tex]
A brick is dropped from a height of 31.9 meters
Explanation:
what is asked give brief explanation about question
A soccer ball is kicked 8 m north. Then a teammate kicks it 6 m east into the goal. What is the soccer ball’s displacement from where it was first kicked?
10 m northeast
14 m northeast
100 m northeast
4 m southeast
Answer:
Displacement=10 meters
Explanation:
The displacement is the direct path from the first contact with the ball and the last spot it was seen in. The ball was kicked north 8 meters, meaning it was kicked vertically upward, and then it was kicked east 6 meters, or to the right. If we were to draw the displacement we would see that this is a right triangle. That means we can use the Pythagorean Theorem:
[tex]a^2+b^2=c^2\\8^2+6^2=c^2\\64+36=c^2\\c^2=100\\\sqrt{c} =\sqrt{100} \\c=10[/tex]
Boom.
The displacement is 10 m toward the northeast. The first option is correct.
The displacement is a vector quantity having both magnitude and direction. It is equal to the path length between the initial and final positions.
Given:
North displacement, y=8 m
East displacement, x= 6 m
The net displacement is calculated using Pythagoras' theorem as the displacements are perpendicular to each other.
The displacement is given by:
d=√(x²+y²)
d=√(8²+6²)
d=10 m
So, the displacement is 10 m.
Therefore, the displacement is 10 m toward the northeast. The first option is correct.
To know more about the displacement, click here:
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Identifying the Parts of an Ecosystem
Animals at a water hole in a barren area. Gazelles are on the near shore, zebras are in the water, and giraffes are at the far edge.
Use the image and the drop-down menus to match the parts of an ecosystem to each description.
All the zebras:
Zebras, gazelle, giraffes, trees:
A giraffe:
Gazelle, zebras, giraffes, water, trees, soil:
Answer:
p c o e
Explanation:
Answer:
Explanation:
pcoe
what is the physical state of gold at room temperature
Answer:
solid
Explanation:
Gold is a chemical element with symbol Au and atomic number 79. Classified as a transition metal, Gold is a solid at room temperature.
The gravitational potential energy of an object moving on the ground is
Answer: ΔPEg = mgh
Explanation: Increases in height and the acceleration due to gravity. The gravitational potential energy of an object near Earth's surface is due to its position in the mass-Earth system.
Where on the physical activity pyramid do lifestyle activities belong?
Answer:
The physical activity pyramid helps in organizing the person's daily life routine. It separated the exercises into different levels and helps the person to inherit a fit and healthy life style.
an apple has a mass of 2kg. it is 3 m above ground. What is its potential energy?
Answer:
PE = 58.8J
Explanation:
potential energy = mgh
mass = 2kg
g = 9.8m/s^2
h = 3m
some bird migrate 20000 miles if 1 mile equals 1.5 km calculate the distance there birds fly in km
for an object to be in static equilibrium, the net force must be equal to zero and
Answer:
The normal force must equal the weight.
Explanation:
Hope this helps..
Which form of energy provides power for a gas stove?
A. nuclear energy
B. electrical energy
C. chemical energy
D. sound energy
Answer:
The gas, which is usually a hydrocarbon fuel, provides the energy. So when the fuel burns with oxygen in the air, it creates heat energy.
Explanation:
Therefore, chemical energy in carbon is released during the combustion process. Carbon dioxide is created, because the carbon-oxygen chemical bonds in the carbon dioxide form which releases heat.
Hope this helps! Have a good day :)
V1=2 L
T1= ? degrees Kelvin
V2= 4 L
T2= 300 degrees Kelvin
Explanation:
using Charles law
V1/T1 = V2/T2
2/ T1 = 4/300
cross multiply
4 X T1 = 2 X 300
T1 = 600/4 = 150
T1 = 150°k
Rearange the following equation
5.5t=1.2t^2
[tex]\\ \sf\longmapsto 5.5t=1.2t^2[/tex]
[tex]\\ \sf\longmapsto t^2=\dfrac{5.5}{1.2}[/tex]
[tex]\\ \sf\longmapsto t^2=4.58[/tex]
[tex]\\ \sf\longmapsto t=\sqrt{4.58}[/tex]
[tex]\\ \sf\longmapsto t=2.1[/tex]
if a hot air balloon is seen rising above the top of a hill, what is the top of the hill called?
Answer:
If you see that a hot-air balloon is rising above the top of a hill, what is the top of the hill called?
A. delta point
B. distance system
C. coordinate system
D. reference point
It is reference pointhope it helps :)
Una bola de 60 Kg se hace descender por medio de un cable, con una aceleración hacia abajo de 4 m/s2 . ¿Cuál es la tensión en el cable?
Answer:
240 N
Explanation:
La fuerza de la tensión del cable es la masa por la aceleración (F=ma).
F = (60)(4) = 240 N
can you please explain this answer?
Answer:
Final velocity = 7.4m/s
Explanation:
Use the equation:
acceleration = (final velocity - initial velocity)/time
Rearrange to get:
final velocity = (acceleration * time) + initial velocity
Now just substitute with the values you already have:
Final velocity = (-9.8m/s^2 * 0.7s) + 0.5m/s
Final velocity = 7.36m/s
We are using 2 sig-figs, so:
Final Velocity = 7.4m/s
Which elements belong to the family known as noble gases?
Answer:
Helium (He), Neon (Ne), Argon (Ar), Krypton (Kr), Xenon (Xe), and Radon (Rn)
Explanation:
hope this helps
Allison (a marathon runner) can run at a steady velocity of 2.8 m/s. How far can Allison run at this speed in 32 minutes?
Answer:
5376 meters per 32 seconds.
Explanation:
Multiplied 2.8 by 60 Making it 168 m/m. Then multiplied that by 32, since it’s 32 minutes, and got 5,376 meters per 32 minutes.
Hope This Helped!
significant nomadic peoples who spoke a language derived from a single parent tongue were the
The Answer would be Indo - Europeans
6.) A racing car of mass 620. kg starts from rest and travels 90.0 meters in 5.00 seconds. What unbalanced force was applied to it?
Answer:
95
Explanation:
Whoich has a greater volume 1kg of gold or 1kg of silver
Answer:
equal
Explanation:
both pursue same amount of weight
A car moving on a straight level road changes its speed from Find its acceleration . (3 pts ) 3.5 m/s to 4.5 m/s in 5.00 seconds .
Answer:
The answer is in my picture.
Explanation:
I hope you have a nice day and please mark me bye(:
The table describes the properties of four compounds.
Which compounds are most likely ionic?
compounds A and B
compounds B and C
compounds C and D
compounds D and A
The characteristics of the ionic bonds allows to find the results for the question about which compound are ionic is:
d) Compounds D and A.
Chemical compounds are formed by atoms linked by electrostatic forces, where one of the elements gave up some electrons and the other element acquired these electrons, the two atoms being in an ionic state, consequently the bond is strong and has several characteristics:
High melting point. It dissolves in polar solvent (water). In general they are hard and brittle solids (NaCl). In solution they are conductors of electricity.
In these characteristics, let's analyze the compounds in the table.
With the property of high melting point the compounds A and D can be ionic. According to the dissolution property all could be ionic. According to the conduction property of electricity, compounds A and D can be ionic
Let's review the different alternatives:
a) False. Compound A and B has a low melting point.
b) False. The B and C compounds have low melting points.
c) False. Compound C has a low melting point.
d) True. The two compounds meet all the characteristics of ionic compounds.
In conclusion with the characteristics of the ionic bonds we can find the results for the question about which compound are ionic is:
d) Compounds D and A are ionics.
Learn more about ionic bonding here: brainly.com/question/13526463
Calculate the average force a 60.0-kg sprinter exerts backward on the track to accelerate from 2.00 to 8.00 m/s in a distance of 2.50m
Hi there!
Because of Newton's Third Law, the force exerted by the sprinter on the track is equal and opposite to the force exerted by the track on the sprinter.
We can begin by calculating the sprinter's acceleration. Use the equation:
vf² = vi² + 2ad
Rearrange for acceleration:
(vf² - vi²)/2d = a
Plug in values:
(8² - 2²)/2(2.5) = 60/5 = 12 m/s²
Calculate the force:
∑F = ma
∑F = 60 × 12 = 720 N. This is the amount of force exerted by the track on the sprinter in causing him to accelerate forward.
Thus, the backward force exerted by the sprinter on the track is the opposite, or -720 N.
which biome has the most variable year round temperature
18. Reference samples come from a source that is O known O scientific method O physical evidence O individual characteristics
Answer:
O scientific method
Explanation:
if katie walks 2 feet forward and 5 feet backwards what distance did she walk?
Answer:
7 feet because 2 feet and 5 feet make seven.
1. How long is a day on Venus?
2. How is Venus similar to Earth?
3. Describe Venus’ atmospheric composition.
Answer:
2:Venus is often named as Earth's twin because both worlds share a similar size, surface composition and have an atmosphere with a complex weather system. ... Both planets have almost the same size and density and Venus is only a 30% closer to the Sun than Earth 1:116d 18h 0m 3: The atmosphere of Venus is made up almost completely of carbon dioxide. It also includes small doses of nitrogen and clouds of sulfuric acid. ... This composition causes a runaway greenhouse effect that heats the planet even hotter than the surface of Mercury, although Venus lies farther from the sun.
Explanation:
What happens when equal forces
are exerted in opposite directions
(the same amount of push and
pull)?
A. There is positive net force.
B. There is negative net force.
C. The net force is zero.
D. There is a small net force.
Answer:
B I'm Pretty Sure :DDD
Explanation:
Balanced Forces
In one of your situations in the last section, you pushed or pulled on an object from opposite directions but with the same force. You observed that the object did not move. When the forces on an object are equal and in opposite directions, the forces are balanced, and there is no change in motion.