1. A car weighs 1000kg, you can push it .05 m/s2, how much force (F) are you applying
to the car? Here we use F=MA:
F= 1000 x .05
F= 50 newtons
Mass of the car (m) = 1000 Kg
Acceleration (a) = 0.05 m/s^2
Let the force we are applying to the car be F N.
By using the equation,
F = ma, we get
F = 1000×0.05 N = 50 N
Answer: We are applying 50 N force to the car in the direction of motion.
A ball rolling on grass has more friction than a ball rolling on tile
Answer:
When you slide an object there is less friction than when you roll it. an object's acceleration (change in speed) depends on the mass of the object and the amount of force applied on it. an object at rest stays at rest unless a force acts on it. ... A ball rolling on grass has more friction than a ball rolling on tile.
Answer:
TrueExplanation:
When you slide an object there is less friction than when you roll it. an object's acceleration (change in speed) depends on the mass of the object and the amount of force applied on it. an object at rest stays at rest unless a force acts on it.
motorcycle starting from rest cover 200 metre distance in 6 second calculate final velocity and acceleration of the motorcycle
Sophie runs around an oval 5 mile track. What is Sophie's displacement and total distance ran?
Her displacement and distance are each 0.
Her displacement is O and her distance is 5 miles.
Her displacement is 5 miles and her distance is 0.
Her distance and displacement are each 5 miles.
Answer:
Her displacement is 0 miles and her distance is 5 miles.
Explanation:
Given information:
Sophie runs in an oval track. The length of track is 5 m.
Distance is the total length of path covered during motion while displacement is the shortest distance between initial and final position.
In this case, Sophie completes one cycle in the oval track and the track length is 5 m. So, the distance covered by her will be 5 m.
Now, after completing the track, the initial and final position of Sophie will be same and hence, the displacement she covered will be 0 miles.
Therefore, option "Her displacement is 0 mile and her distance is 5 miles" is correct.
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The displacement of Sophie is 0 and her distance is 5 m
The displacement of Sophie is the change in her position.
If she runs in an oval track, she will return to her initial starting position. The initial position and the final position will be equal, the change in her displacement will be zero.
[tex]\Delta x = x_f- x_i\\\\\Delta x = 5 - 5 = 0[/tex]
The distance traveled by Sophie is the sum of the total distance covered.
distance = 5 m
Thus, the displacement of Sophie is 0 and her distance is 5 m
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if you had 6,000 milligrams of rock to move how many kilograms is that?
Answer:
0.006
Explanation:
100mg= 0.0001kgghsjsslslkdn d
A human geographer would most likely study __________.
Which of the following is not an example of a study within human geography?
Answer:
A human geographer would most likely study the housing styles of the Baka people of the Congo.
The following that is not an example of a study within human geography is Political Systems.
you run from your house to a friend's house that 3 miles away. you then walk home. A. What distance did you travel? B. What was the displacement for the entire trip?
Which is the best estimate for the mass of a typical lineman on a high school football team
1. 100,000 g
2. 100,000 kg
3. 100,000 mg
We have that the best estimate for the mass of a typical lineman on a high school football team is
[tex]100,000 g=100kg[/tex]
From the options
1. 100,000 g
2. 100,000 kg
3. 100,000 mg
Generally
A Typical lineman cannot be as small as
[tex]100000mg=0.1kg=100g[/tex]
A Typical linesman cannot be as massive as
[tex]100,000kg[/tex] as that is unrealistic
With the Average Mass of A Typical linesman can be
[tex]100,000 g=100kg[/tex]
In conclusion
The best estimate for the mass of a typical lineman on a high school football team is
[tex]100,000 g=100kg[/tex]
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The motion of the particles is most orderly in
Answer:
Solids
Explanation:
Particles are most orderly in solids.
Differentiate the following functions with respect to x x³ + 5x² - 2
Answer:
The answer is 3x² + 10x
Explanation:
d/dx (x³ + 5x² - 2)
= d/dx (x³) + 5 d/dx (x²) - d/dx (2)
= 3x² + 5(2x) - 0
= 3x² + 10x
Thus, The answer is 3x² + 10x
-TheUnknownScientist
Answer:
3x² + 10 x
Explanation:
hope it's helpful
Standing at the edge of a cliff 32.5m high, you do a ball. Later, you throw a second ball downward with an initial speed of 11m/s. Calculate the velocity if each of the balls when it hits the ground
Answer: The displacement of the ball
ℎ =
2 −
2
2
So, final speed of the first ball
1 = √2ℎ = √2 × 9.8 × 32.5 = 25.24
m
s
The change of it speed
∆1 = 25.24 − 0 = 25.34
m
s
The final speed of the second ball
2 = √
2 + 2ℎ = 27.53
m
s
The change of the second ball speed
∆2 = 27.53 − 11 = 16.53
m
s
Thus
∆1 > ∆2
Answer: ∆1 > ∆2
Explanation:
The final velocity of the first ball is 25.24 m/s and the final velocity of the second ball is 27.53 m/s
To calculate the final velocity of the first ball, we use the equation
v² = u² - 2gh where u = initial velocity of first ball = 0 m/s, v = final velocity of first ball, g = acceleration due to gravity = -9.8 m/s² (since it is directed downwards)and h = height of cliff = 32.5 m
Substituting the values of the variables into the equation, we have
v² = u² - 2gh
v² = (0 m/s)² - 2 × -9.8 m/s² × 32.5 m
v² = 0 m²/s² + 637 m²/s²
v² = 637 m²/s²
v = √(637 m²/s²)
v = 25.24 m/s
To find the final velocity of the second ball, we also use
v'² = u'² - 2gh where u' = initial velocity of second ball = 11 m/s, v' = final velocity of second ball, g = acceleration due to gravity = -9.8 m/s² (since it is directed downwards)and h = height of cliff = 32.5 m
Substituting the values of the variables into the equation, we have
v'² = u'² - 2gh
v'² = (11 m/s)² - 2 × -9.8 m/s² × 32.5 m
v'² = 121 m²/s² + 637 m²/s²
v'² = 758 m²/s²
v' = √(758 m²/s²)
v' = 27.53 m/s
So, the final velocity of the first ball is 25.24 m/s and the final velocity of the second ball is 27.53 m/s
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A sample of oxygen gas occupies a volume of 200 mL at a pressure of 720 torr. What volume will the gas occupy at a pressure of 800 torr if temperature is held constant
We have that the gas will occupy at a pressure of 800 torr if temperature is held constant a Volume of
[tex]V_2=0.18L[/tex]
From the Question we are told that
Initial Pressure [tex]P_1=720[/tex]
final Volume [tex]V_1=200mL[/tex]
Initial Pressure [tex]P_2=800[/tex]
final Volume [tex]V_2=?[/tex]
Generally the equation for Boyle's law is mathematically given as
[tex]P_1V_1= P_2V_2[/tex]
Therefore
[tex]V_2=\frac{ P_1V_1}{P_2}\\\\V_2=\frac{ 720*200}{800}\\\\V_2=180mL[/tex]
[tex]V_2=0.18L[/tex]
The gas will occupy at a pressure of 800 torr if temperature is held constant a Volume of
[tex]V_2=0.18L[/tex]
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A roller coaster’s velocity at the top of a hill is 10 m/s. Two seconds later it reaches the bottom of the hill with a velocity of 26 m/s. What was the acceleration of the coaster? [3]
Answer:
8 m/s²
Explanation:
a = [tex]\frac{v-v0}{t}[/tex]
a = (26 - 10)/2 = 8 m/s²
How many megabytes does a 30-gigabyte hard drive hold
Answer:
30,000
Explanation:
1 gig is 1000 megabytes
A class is performing an experiment to keep an ice cube solid as long as possible.
Which student's actions could be a source of error in this experiment?
A. Carey put the ice cube in cold water and recorded the temperature
every 2 minutes as the ice cube melted.
B. Angelina waited until the next day to observe the ice cube and
record how long it took to melt.
C. Jody outlined the ice cube to measure it before it started to melt.
D. Jerrie wrapped the ice cube loosely in several layers of cotton and
aluminum foil.
Answer:
B
Explanation:
If Angelina waited until the next day to observe and record how long the ice cube took to melt she wouldn't be able to know how long the ice cube took to melt because she wasn't there while the ice cube was melting.
write the law of friction???
Answer:
The friction of the moving object is proportional and perpendicular to the normal force
The friction of the moving object is proportional and perpendicular to the normal force. The friction experienced by the object is dependent on the nature of the surface it is in contact with. Friction is independent of the area of contact as long as there is an area of contact.
What is the difference between the temperatures on Earth and the moon?
Answer:
The earth is hotter
Explanation:
the average temperature on earth is 57 degrees Fahrenheit the average on the moon is -298 degrees Fahrenheit
What are the 5 advantages of NSC
Answer:
Tax saver: As a government-backed tax-saving scheme, the principal invested in NSC qualifies for tax savings under under Section 80C of the Income Tax Act up to Rs. 1.5 lakhs annually.
Investment Flexibility : You can invest as small as Rs. 100 as an initial investment with no maximum limit.
PLEASE ANSWER!!!!!!!!! WILL GIVE BRAINLIEST!!!
Physical Science is the study of ____.
energy
matter
how matter and energy interact
all answers are true
Physics is the study of matter, energy and the interactions between them. So, all the answers are true.
What is meant by energy ?Energy is defined as the measurement of ability to do work.
Here,
Energy is the measurement of ability do work, which is a physical property of matter. Energy is of various types such as kinetic energy, potential energy, thermal energy, electrical energy, heat energy, etc. Energy and its applications are associated with many laws. The study of energy and the laws associated with them is one of the main branch of physics.
Matter is defined as the substance that has a specific mass and occupies physical space. Atomic particles such as electrons, protons and others are material particles. Thus the study of these matter and material particles is an important branch of physics.
Matter and energy in nature interacts in many ways. Material particles moving moving with particular kinetic energy is an example of matter-energy interactions. These interactions and their studies comes under physics.
Hence,
Physics is the study of matter, energy and the interactions between them. So, all the answers are true.
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A rock is dropped from a height of 3,245 m. If we ignore air resistance, how fast will it be travelling after it falls for 3.4 s?
Answer:
954.4m/s
Explanation:
For a free falling object,it has constant acceleration and a changing velocity.
By using the velocity-time formula, the velocity can be obtained.
The height the rock travelled is the distance.
From,
Velocity (v) = Distance (d) / Time(t)
v = 3245m/3.4s
v = 954.4m/s
That js the answer I got. Hope it's right.
Weight is thought to be how big or how small and object is. Which of the following is another definition of weight
Answer:
Where is the rest of the question?
difference between objects at rest and objects at motion
Object at rest :
*An object is said to be at rest if it does not change its position with respect to its surroundings with time.
Object at motion:
*An object is said to be in motion if the position changes with respect to it surrounding and time.
Answer:
Objects at rest: Objects at rest are ones that have no motion in them and will be stable in the same position. They have potential energy.
Objects at motion: Objects at motion are ones that are constantly in motion and a consistent velocity until they are acted upon by an unbalanced force. They have kinetic energy.
Explanation:
Complete the passage to describe velocity vs time graphs.
A velocity vs time graph is a graph that shows the relationship between the velocity of an object over time.
is plotted on the x-axis in seconds, and the
of the object is plotted on the y-axis in
meters per second.
Intro
ty
Done
Answer:
Explanation:
velocity unit t is m/s and the slope indicates the acceleration
Answer: time and volocity
Explanation:
How many moons are represented
Answer:
Earth has one moon, and there are more than 200 moons in our solar system. Most of the major planets – all except Mercury and Venus – have moons. Pluto and some other dwarf planets, as well as many asteroids, also have small moons.
Hope it will help you !18-8Y=6
Solve for Y
Round to TWO decimal points
Answer:
-8Y =6-18
-8Y=-12
Y=-12+8
y=-4
why is newton's gravitational force called universal gravitational force
Answer:
is called so because it is applicable on all bodies having mass, and the bodies will be governed by the same law, that is newton's law of gravitation. Thus, as it is applicable universally, it is called as universal law
Tại cùng một nơi trên trái đất hai con lắc đơn có chiều dài lần lượt là L1 và chiều dài L2 .Trong cùng một khoảng thời gian ∆t con lắc có chiều dài L1 thực hiên 24 dao động toàn phần và con lắc có chiều dài L2 thực hiện được 27 dao động toàn phần. Hỏi vẫn trong khoảng thời gian ∆t nói trên con lắc có chiều dài L3=|0, 25L2 - 1/9L1| thực hiện được số dao động toàn phần gần giá trị nào nhất ?
A. 60 B. 50 C. 70 D. 80
Answer:
what do this even say
Explanation:
(b) On what factor does the mechanical advantage of a simple machine depend? (a) N/m B. Very short answer questions, 1. What is the principle of simple machine? 2. 3. The efficiency of simple machine is 75%. What does it mean? 4. S. What is lever? In how many classes is lever classified? Write the name of a simple machine used to change the direction of force. 6.the velocity ratio of a pulley system is 4.what does it mean? 0 Reliant Science - 9
Answer:
No.b answer
the ratio of the length of the lever arm where the force is applied divided by the length of the lever are that lifts the load.
No.1 answer
if there is no friction in a simple machine, work output and work input are found to be equal in the machine.
No.3 answer
machine that is 75% efficient means that 75% of the work input is obtained as the useful output and the remaining 25% has been lost in overcoming the friction.
No.4 Answer
A lever is a simple machine made of a rigid beam and a fulcrum. In 3 calss lever is classified.
Simple pulleys change the direction of the force used to lift an object over a distance.
ratio of distance travelled by effort to the distance travelled by load in the machine.
Hope this will help you alot
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ball is projected horizontally from a height of 30m above the ground with a speed of 20m/s. calculate the horizontal distance travelled by the ball when it hits the ground g = 10m/s2]
The range is
[tex]\Large\displaystyle\text{$\begin{gathered} \text{Range } = R= v_x\sqrt{\frac{2S_{y_0}}{g}}\\ \\R= 20\sqrt{6} \approx 48.98\text{ m}\\ \\\end{gathered}$}[/tex]
We know that in cinematic problems the velocity in different directions is independent, so on the y-axis, or the y-velocity we have the gravity acceleration changing the velocity, although on the x-axis, or the x-velocity we don't have any acceleration, so the velocity is constant, so, we can use the basic cinematic equations and adapt them for our problem:
[tex]\Large\displaystyle\text{$\begin{gathered}S_x = S_{x_0} + v_x t\\ \\v_y = v_{y_0} - gt \\ \\S_y = S_{y_0} + v_{y_0}t - \frac{gt^2}{2}\end{gathered}$}[/tex]
We can simplify it, we know that all the initial position on the x-axis is zero, but the initial position on the y-axis is 30, we also know that the initial velocity on y-axis is zero, so
[tex]\Large\displaystyle\text{$\begin{gathered}S_x = v_x t\\ \\v_y =- gt \\ \\S_y = S_{y_0} - \frac{gt^2}{2}\end{gathered}$}[/tex]
I won't put numbers know, let's do all the manipulation first.
When the ball hit the ground we know that his position is 0 on the y-axis, so
[tex]\Large\displaystyle\text{$\begin{gathered}0 = S_{y_0} - \frac{gt^2}{2}\\ \\S_{y_0} = \frac{gt^2}{2}\\ \\t = \sqrt{\frac{2S_{y_0}}{g}}\end{gathered}$}[/tex]
Now we know when the ball hits the ground, so we can use this time on the position equation on the x-axis and find out the distance the ball travelled
[tex]\Large\displaystyle\text{$\begin{gathered}S_x = v_x t\\ \\S_x = v_x\sqrt{\frac{2S_{y_0}}{g}}\end{gathered}$}[/tex]
That's all! we can just put the values know.
[tex]\Large\displaystyle\text{$\begin{gathered} \text{Range } = R= v_x\sqrt{\frac{2S_{y_0}}{g}}\\ \\R= 20\sqrt{\frac{2\cdot 30}{10}}\\ \\R= 20\sqrt{6} \approx 48.98\text{ m}\\ \\\end{gathered}$}[/tex]
Hope you liked it
Question? Ask me in the comments
Draw simple electrical circuit using symbols of dry cell resistor voltmeter and switch
Explanation:
I hope this really can help you...
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