Answer:
final velocity 'v' = 71m/s distance 's' = 1000m intial velocity 'u' =0 therefore,using third equation of motion v^2- u^2=2*a*s 71*71=2*a*1000 a=71*71/(2*1000 a= 2.52m/s^2
Explanation:
The nucleus of an atom is
charged.
Positively
Liquid
Variably
Negatively
a coin is released into the air what force acts on it when it reaches its highest point
Answer:
Gravity
Explanation:
After it reaches it's highest point, it falls back down because of gravity.
Which of the following shapes is most similar to Earth's orbit?
A. Shape A
B. Shape B
C. Shape C
D. Shape D
The right option must be option (B).
Since the orbit of the earth is only 3% oblate, it is closer to a circle.
Kepler's Laws:According to Kepler's laws of planetary motion:
The planets each travel along an ellipse with the sun at one focus.The line joining the sun and the planets sweep out equal areas in equal time intervals.The square of the period of the revolution of the planets equals the cube of the planet's mean distance from the sun.So according to Kepler's law, it would seem that the answer must be option A. And it can be the right choice generally.
But the orbit of earth is only 3% oblate, which means it is only 3% an ellipse, so the orbit of the earth is closer to a circle. So the right option must be option B.
Learn more about Kepler's laws:
https://brainly.com/question/24972577?referrer=searchResults
Answer:
Shape B
Explanation:
Calculate the acceleration due to gravity on the planet where an 80kg astronaut weighs only 304N.
Answer:
m=w/g
80kg=304/g
g=3.8 m/s^2
Explanation:
Help!
A ball is +8 m from the origin and moves -13 m. What is the ball's final position?
A. 21 m
B.-21 m
C. 55 m
D. -5 m
Answer: D. -5
It is -5 because you subtract 13 from 8 to get to the answer.
Answer:
d -5 m
Explanation:
bc 8 subtract by 13 = 5
A sprinter is running toward the finish line at 7 m/s. When he is 12 m away from the finish line, he begins to fatigue and slows at a rate of -0.6 m/s^2 . How fast is he running when he crosses the goal line? *Round your answer to the nearest hundredth.
Answer:
5.88 m/s
Explanation:
The following data were obtained from the question:
Initial velocity (u) = 7 m/s
Acceleration (a) = –0.6 m/s²
Distance (s) = 12 m
Final velocity (v) =.?
We, can determine how fast the sprinter is running when he crosses the goal line as follow:
v² = u² + 2as
v² = 7² + (2 × –0.6 × 12)
v² = 49 + (–14.4)
v² = 49 – 14.4
v² = 34.6
Take the square root of both side
v = √34.6
v = 5.88 m/s
Therefore, the sprinter is running at a speed of 5.88 m/s when he crosses the goal line.
Would ocean water cause our cells to swell with more or to shrivel ?
Answer: The cell shrinks
Explanation: Seawater is hypertonic. If you place an animal or a plant cell in a hypertonic solution, the cell shrinks, because it loses water ( water moves from a higher concentration inside the cell to a lower concentration outside ). So if you get thirsty at the beach drinking seawater makes you even more dehydrated.
A roller coaster, traveling with an initial speed of 15 meters per second, decelerates uniformly at 7.0 m/s/s to a full stop. Approximately how far does the roller coaster travel during its deceleration?
The majority of the population in the United States speak __________.
Answer:
english or spanish
Explanation:
Answer:
English
Explanation:
what are the goals of the war and revolution
Answer:
to claim equal rights for all citizens and establish the rule of law required for that to be meaningful
Explanation:
answer:
which war? which revolution? im going to go on a whim and assume you are talking about the american revolution
patriots fought the revolution in order tobecome an independent nation from britian and create a new system of self-governance so that they could claim equal rights for all citizens and establish rule of law.
explanation:
hope this helped <3 also if wouldn't mind could you pls give me brainliest? (im trying to level up) thanks! :)
In 1838 botanist Matthias Schleiden determined that all plants are composed of cells. In 1839 anatomist Theodor Schwann proposed that all animals are composed of cells. In 1855 biologists Rudolph Virchow added to Schleiden & Schwann’s observations and proposed that all living things are composed of cells. Which statement is also part of Virchow’s theory? Group of answer choices all cells have a cell wall all cells can develop into any other type of cell all cells come from pre-existing cells all cells are capable of photosynthesis
Answer:
All cells come from pre-existing cells
Explanation:
Rudolf Virchow, a German Physician, stated the theory that all cells arise from pre-existing cells. He used this theory to explain disease pathology at the cellular level. His work helped clarify that diseases occur not at tissue or organ level, but at the cellular level. This resulted in more accurate diagnosis of diseases by other scientists.
His legacies includes being among the first to use animals in his research, first to name numerous diseases and also the creation of many medical terms still in use today.
What can all waves travel through?
Answer:
The ocean
Explanation:
Calculate the momentum of a 2500 kg truck traveling 110 km/h
Answer:
275000
Explanation:
momentum = mass * velocity
2500*110=275000
Regulating your body temperature is a part of maintaining homeostasis. Which part of a person's diet plays the largest role in regulating body temperature? A. Minerals B. Iron C. Vitamins D. Water
Answer:
The correct option is D.
Explanation:
Water help to maintain homeostasis or regulate body temperature because water has the ability to maintain internal body temperature by responding to the body external temperature. The mechanism water uses to regulate temperature is sweat. When the external temperature is high , sweat. Help to prevent the body from overheating and this water is loss by evaporation and after that there is cooling which regulate the temperature.
Answer:
D
Explanation:)
3. A 100 kg crate is sliding at a rate of 30.0 m/s, when a force of 250 N is applied opposite the
direction of motion, in addition to the friction, until the crate stops 5.0 s later. What is the
coefficient of kinetic friction between the crate and the floor?
Take the direction of motion to be the positive direction. The crate slows to a rest from 30.0 m/s in a matter of 5.0 s, so it has acceleration a such that
0 = 30.0 m/s + a (5.0 s) → a = -6.0 m/s²
At the moment its speed is 0, the crate has a net force of s + f acting in negative direction, where s and f denote the magnitudes of the stopping force (s = 250 N) and the friction force, respectively. By Newton's second law, we have
(-s) + (-f) = (100 kg) (-6.0 m/s²)
250 N + f = 600 N
f = 350 N
The friction force is proportional to the normal force by a factor of µ, the coefficient of kinetic friction. There is no movement in the up- and downward directions, so Newton's second law says
(-w) + n = 0
where w is the weight of the crate and n is the magnitude of the normal force. So
n = w = (100 kg) (9.80 m/s²) = 980 N
Then
f = µ n
350 N = µ (980 N)
µ = (350 N) / (980 N) ≈ 0.357
A space shuttle enters Earth’s upper atmosphere with a velocity of 11,200 m/s and experiences an acceleration of -70 m/s². What is the magnitude of the shuttle’s velocity 10 s after the shuttle enters the upper atmosphere?
Answer:
magnitude =
Explanation:
Given an initial velocity of 11200m/s, and acceleration of -70m/s^2, we are told to find the magnitude of the velocity in 10s.
In general, magnitude is defined as the numerical value or quantity of a variable. In physics, magnitude refers to the total measure(length) of distance covered.
what is rotating inside of the earth to create a magnetic field?
Answer:
So it's clear that Earth's hot iron core isn't what creates the magnetic field around our planet. ... On Earth, flowing of liquid metal in the outer core of the planet generates electric currents. The rotation of Earth on its axis causes these electric currents to form a magnetic field which extends around the planet
Explanation:
The bird has a mass of 0.8 kg. Calculate the weight of the bird.
Data:
m=0.8kg
g=10m/s2
w=?
Solution:
w=mg
w=(0.8)(10)
w=8N
Result:
weight of the bird is 8N
Why is hatha yoga used in physical education?
Answer:
yoga postures and breathing techniques in Hatha yoga purify the physical body.
Explanation:
Pls help I am very confused science
Answer:
plant cell
Explanation:
because it has chloroplast
A rock dropped straight down reaches a final velocity of 17.07 m/s, how far down did the rock fall?
(Can someone plz help me out and if possible give the solution on how to solve it)
Answer:
fell DOWN 14.87m
Explanation:
vf^2=vi^2+2adeltax
[(17.07 m/s)^2-(0)^2]/[2*(-9.8 m/s2)]= deltax
x=-14.87 m
fell DOWN 14.87m
What is elastic energy determined by.
The ability to get energy out depends on the material's elasticity. The energy stored in a spring depends on the: Distance the spring is deformed (stretched or compressed) The spring constant, which defines the amount of force required to deform a spring by a certain length (the work done on the spring).
Alisa needs to make some hot tea for her ill mother. She uses some ice-cold water from the freezer and heats it up in the kettle. As she hears the teapot whistling, she asks herself, “How is the motion of the ice water’s particles changing as the hot tea is being made?”
What is the best answer to Alisa’s question?
Answer choices
A. The particles in the cold water moved at a slow rate until a decrease in temperature caused an increase in particle motion in the hot tea.
B. The particles in the cold water moved at the same rate until an increase in temperature caused a decrease in particle motion in the hot tea.
C. The particles in the cold water moved at a high rate until an increase in temperature caused a decrease in particle motion in the hot tea.
D. The particles in the cold water moved at a slow rate until an increase in temperature caused an increase in particle motion in the hot tea.
:)
Answer:
the answer is b
Explanation:
The particles in the cold water moved at a slow rate until an increase in temperature caused an increase in particle motion in the hot tea.
According to the kinetic theory of matter, the particles that compose matter are in constant random motion. The particles collide frequently with each other as well as with the walls of the container.
The temperature of the system refers to the average kinetic energy of the molecules of the body. At a lower temperature, the speed of the particles of water is slow. As the temperature increases, more kinetic energy is imparted to the molecules of water and they move faster.
Learn more: https://brainly.com/question/5624100
A 20-kg child sits on a horse affixed to a carousel, which is located a distance of 2.3 meters from the
carousel's axis of rotation. The child makes 4 complete trips around the carousel in one minute.
A. What total distance does the child travel?
B. What is the period of the carousel?
C. What is the carousel's frequency?
D. What is the child's tangential velocity?
E. What is the child's centripetal acceleration?
F. What is the net centripetal force on the child?
Answer:
A) D = 57.8
B) 900 sec
C) 1.11 x 10^-3 HZ
D) V= 0.016m/s
E) 1.12x10^-4m/s
F) 2.24 x 10^-3 N
a robotic vacuum is at rest at its charging station. it leaves to clean the house accelerating to 0.3.meters per second in 0.8 seconds. whats is the magnitude of the vacuums acceleration
Answer:
Acceleration, a = 0.375 m/s²
Explanation:
In physics, acceleration can be defined as the rate of change of the velocity of an object with respect to time.
This simply means that, acceleration is given by the subtraction of initial velocity from the final velocity all over time.
Hence, if we subtract the initial velocity from the final velocity and divide that by the time, we can calculate an object’s acceleration.
Mathematically, acceleration is given by the equation;
[tex]Acceleration (a) = \frac{final \; velocity - initial \; velocity}{time}[/tex]
[tex]a = \frac{v - u}{t}[/tex]
Where,
a is acceleration measured in [tex]ms^{-2}[/tex]v and u is final and initial velocity respectively, measured in [tex]ms^{-1}[/tex]t is time measured in seconds.Given the following data;
Initial velocity, u = 0m/s
Final velocity, v = 0.3m/s
Time, t = 0.8secs
Substituting into the equation, we have;
[tex]a = \frac{0.3 - 0}{0.8}[/tex]
[tex]a = \frac{0.3}{0.8}[/tex]
Acceleration, a = 0.375 m/s²
Therefore, the the magnitude of the vacuum's acceleration is 0.375 m/s²
Help plz giving BRAINLIEST :) (due really soon)
Answer:
This will take me a min hold up
Explanation:
11: if the charge INCREASES then so does the force
12: x2
13: x3
14: be like x4 i think.. yeah x4
Erm table 1: 0.6N, 1.2N, 1.8N
and table 2 I think: 0.6N, 2.4 N, 5.4N
Please help 25 points Add the following numbers and round your answer to the correct number of significant figures:
90.0 + 80 =
Show both the unrounded and rounded answer.
Explanation:
Wouldn't this just be 90+80 meaning the answer would be 170?
what number should replace the question mark? I'll gladly appreciate your response and thank you!! ♥️
answer:
1 or 4
explanation:
hope this helped <3 also if wouldn't mind could you pls give me brainliest? (im trying to level up) thanks! :)
whats a neutralizer answer
Answer:
a neutralization reaction is when a action in a base react to form water and salt it also
neutralization is where and where are the acid reacts with a nuclear to form a netural soution of a salt and water
Explanation:
it involves the combination of H plus ions oh- to generate water it means when a solution is neutralized it means that salts are formed from equal weights of acid and base please mark this brainiest please
Answer:
divide 2 by 2
Explanation:
While driving his pickup truck, Joe stops at a red light. When the light turns green, Joe steps on the gas
and accelerates to 16 m/s in 4 seconds. What is Joe's acceleration?
================================================
Work Shown:
The values we're working with are
[tex]v_i = 0 = \text{ initial velocity}\\\\v_f = 16 = \text{ final velocity}\\\\t = 4 = \text{ change in time}\\\\a = \text{ unknown } = \text{ acceleration}\\\\[/tex]
We'll plug those into the kinematics formula below to solve for 'a'
[tex]v_f = v_i + a*t\\\\16 = 0 + a*4\\\\16 = 4a\\\\4a = 16\\\\a = \frac{16}{4}\\\\a = 4\\\\[/tex]
Joe's acceleration is 4 m/s^2
This means that every second, Joe's velocity is increasing by 4 m/s.
---------------------------
To check our answer, we can see that
Time 0 = Velocity 0
Time 1 = Velocity 4
Time 2 = Velocity 8
Time 3 = Velocity 12
Time 4 = Velocity 16
This confirms our answer.
