Suppose you have an object tied to a rope and are rotating it over your head in uniform circular motion. What would have to do to the rope length in order to cut the centripetal force in half
Answer:
We must duplicate the length of the rope (R'=2R) to get
[tex]F'=\frac{1}{2}F[/tex]
Explanation:
The equation of the centripetal force is given by:
[tex]F_{c}=ma_{c}[/tex]
[tex]F_{c}=m\frac{v^{2}}{R}[/tex]
Where:
R is the length of the rope
m is the mass of the object
v is the speed of the object
If we want to reduce the centripetal force in half, we can duplicate the length of the rope (R'=2R), which means:
[tex]F'_{c}=m\frac{v^{2}}{R'}[/tex]
[tex]F'_{c}=m\frac{v^{2}}{2R}[/tex]
[tex]F'_{c}=\frac{1}{2}F_{c}[/tex]
I hope it helps you!
1. What is the value of the acceleration that the car experiences? 2. What is the value of the change in velocity that the car experiences? 3. What is the value of the impulse on the car? 4. What is the value of the change in momentum that the car experiences? 5. What is the final velocity of the car at the end of 10 seconds? The car continues at this speed for a while. 6. What is the value of the change in momentum the car experiences as it continues at this velocity? 7. What is the value of the impulse on the car as it continues at this velocity? The brakes are applied to the car, causing it to come to rest in 4 s. 8. What is the value of the change in momentum that the car experiences? 9. What is the value of the impulse on the car? 10. What is the value of the force (average) that causes the car to stop? 11. What is the acceleration of the car as it stops?
Answer:
All the answers are solved and explained below.
Explanation:
Note: This questions lacks the initial and most necessary data to answer these following questions. I have found a related question. I will be considering that question to carry out the answers.
Question: A car with a mass of 1000 kg is at rest at a spotlight. when the light turns green, it is pushed by a net force of 2000 N for 10 s. (This was the information missing in this question).
Data Given:
m = 1000 kg
F = 2000N
t = 10s
Q1 Solution:
Acceleration = a = ?
F = ma
a = F/m
a = 2000/ 1000
a = 2 [tex]m/s^{2}[/tex]
Q2: Solution:
Change in velocity = Δv = ?
acceleration = change in velocity / time
a = Δv/t
Δv = axt
Δv = 2 x 10
Δv = 20 m/s
Q3: Solution:
Impulse = I = ?
Impulse = Force x time
I = 2000 x 10
I = 20000 Ns
Q4: Solution:
Change in Momentum = Δp = ?
Δp = mΔv
Δp = 1000 x 20
Δp = 20000 Kgm/s
Q5: Solution:
Final velocity of the car at the end of 10 seconds = vf = ?
Δp = m x Δv
Δp = m x (vf-vi)
Δp = 1000 x (vf - 0 )
20000 = 1000 x vf
vf = 20000/1000
vf = 20 m/s
Q6: Solution:
Change in momentum the car experiences as it continues at this velocity?
Δp = ?
Δp = mΔv
Δp = m x (0)
Δp = 0
Q7: Solution:
Impulse = Change in momentum
Impulse = Δp
Implulse = 0
Q8: Solution:
Change in momentum = Δp = mΔv
Δp = m(vf-vi)
Δp = 1000 x (0-20)
Δp = -20000 kgm/s
Q9: Solution:
Impulse = Δp
Impulse = -20000 Ns
Q10: Solution:
Impulse = ?
Impulse = F x t
F = impulse/t
F = -20000/4s
F = -5000 N
Q11: Solution:
F = ma
a = ?
a = F/m
a = -5000/1000
a = -5[tex]m/s^{2}[/tex]
A rectangular tank 6 m long and 3 m wide contains water up to a depth of 2.5 m.
Calculate the pressure and resultant hydrostatic force on the base of the tank.
Answer:
P = 24525 [Pa]
Explanation:
The pressure at the bottom of any vessel can be determined, only by knowing the depth or height of the liquid level. By means of the following equation.
[tex]P=Ro*g*h[/tex]
where:
P = pressure [Pa]
Ro = density of the water = 1000 [kg/m³]
g = gravity acceleration = 9.81 [m/s²]
h = elevation = 2.5 [m]
Now replacing:
[tex]P=1000*9.81*2.5\\P=24525 [Pa][/tex]
A train travels at 100 km/h heading east to reach a town in 4 hours. The train then reversed ad heads west at 50 km/h for 4 hours
Select the correct answer.
Cereal plants gain chemical potential energy as they grow. Which form of energy is converted to create the chemical potential energy?
O A gravitational potential energy
OB.
kinetic energy
OC light energy
OD.
thermal energy
Answer:
c
Explanation:
ITS ACTUALLY ASTRONOMY
What is the name for a star that has two shells of hydrogen and helium undergoing fusion?
A. asymptotic giant branch star
B.Supergiant
C. hypergiant
D. supernova
*please help thx*
Answer:
A. Asymptotic giant branch star
Explanation:
Hope this helped.
Answer:
asymptotic giant branch star
Explanation:
Plato/Edmentum
Can earthquakes occur in an area with no fault and no volcanoes?Why?
ill give brainliest to 1st that answers
Answer:
No
Explanation:
Earthquakes cannot occur in an area with no fault and no volcanoes.
An earthquake is the sudden movement of within the earth usually along a fault surface.
Earthquake releases a huge amount of energy that can be very destructive to the surrounding environment where the quake was triggered. Tectonic movement due to fault displacement is the leading cause of earthquakes. Also, faults can be reactivated by fluid dispersion along fault planes.Therefore, earthquakes are closely and tightly related to faults and volcanoes.
Im pretty sure I know which one just makin sure
This is for my sister
______________________ is the body's normal reaction to help the body return to a more stable temperature when a person is really cold.
pacing
walking
shivering
freezing
Answer:
shivering raises your body temperature
Where does the energy in an unburned match come from?
A matchstick has a lot of chemical energy stored in it. When the match is struck, it burns and the chemical energy in it produces heat energy and light energy.
A matchstick has a lot of substance energy set aside in it. Right when the match is struck, it consumes and the engineered energy in it produces heat energy and light energy.
What is the energy?Chemical energy is the energy that is released when organic compounds engage in a chemical reaction and change into other substances. Batteries, food, and gas are a few examples of chemical energy storage mediums.
The types of energy are as follows:
Electrical EnergyChemical EnergyMechanical EnergyThermal EnergyNuclear EnergyThe energy can not be made and it can not be vanished. But it can be transform from one form to another form.
A matchstick has a ton of substance energy put away in it. At the point when the match is struck, it consumes and the synthetic energy in it produces heat energy and light energy.
Learn more about energy:
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What is this question formula a=V²-U² /2S?
Answer:
sorry I don't really know about that question.
Explanation:
How many hours are in a full day and night? I have been told 24 hrs but is that right?
Answer:
its 24 hours
Explanation:
12 hours during the night and 12 hours during the day
Yes that's right...did anyone tell you something else?
A military jet cruising at an altitude of and speed of burns fuel at the rate of . How would you calculate the amount of fuel the jet consumes on a mission
Answer:
Calculate the time (in minutes) that it would take for the jet to cover the distance at the given speed.Multiply the time with the rate of burning of fuel by the jet.Explanation:
A military jet cruising at an altitude of 12.0 km and speed of 1200 km/h burns fuel at the rate of 80.1 L/min. How would you calculate the amount of fuel the jet consumes on a 750 km mission?
In order to calculate the amount of fuel that would be consumed, first, there is a need to find the time it will take to complete the 750 km mission.
Recall that: speed = distance/time, at a speed of 1200 km/h, the time taken to cover a distance of 750 km would be;
time = distance/speed
= 750/1200 = 0.625 h
The rate of fuel burning is 80.1 Liters in a minute, there are 60 minutes in 1 hr;
1 hr = 60 minutes
0.625 h = 0.625 x 60 = 37.5 minutes
It takes 37.5 minutes to cover 750 km and the fuel burning rate is 80.1 liters per minute, hence, the amount of fuel consumed by the jet would be;
80.1 x 37.5 = 3000 liters
ANSWER FAST PLSSSSSS Use this diagram of the wave below to answer any questions that follow
Answer:
1. Letter A indicates the crest.
2. Letter E indicates the wavelength.
3. Letter C indicates the trough.
Explanation:
1. Determination of the the crest.
A crest is simply defined as a point on a wave where the displacement is maximum (i.e highest).
Considering the diagram given above, the point where the displacement is maximum is A. Therefore, A is the crest of the wave.
2. Determination of the wavelength.
The wavelength of a wave is simply defined as the distance between two successive crest or trough.
Obeserving the diagram above, we can see that E gives the distance between two successive crest. Therefore, E is the wavelength of the wave.
3. Determination of the trough.
A trough is simply defined as a point on a wave where the displacement is minimum (i.e lowest). Thus we can say that the trough is the opposite of the crest.
Considering the diagram given above, the point where the displacement is minimum is C. Therefore, C is the trough of the wave.
Water enters a shower head through a pipe of radius 0.0112 m at 3.25 m/s. What is it’s volume flow rate? (Unit= m^3/s)
Answer:
[tex]1.28 \times 10 ^{-3} m^3/s[/tex]
Explanation:
Given that the radius of the pipe, r =0.0112 m
So, the area of the cross-section, [tex]a= \pi (0.0112)^2 = 3.941\times 10^{-4} m^2[/tex]
Speed of water in the pipe, v=3.25 m/s
Volume flow rate =[tex]av= 3.941\times 10^{-4} \times 3.25 = 1.28\times 10 ^{-3} m^3/s[/tex]
Hence, the volume flow rate is [tex]1.28 \times 10 ^{-3} m^3/s[/tex]
Answer:
For Acellus the answer is 0.00128
Explanation:
Trust me
A free falling asteroid is experiencing a force of gravity of 903 newtons. How much work, in joules, does gravity do on the asteroid over a distance of 126 meters?
Answer:
Workdone = 113778 Joules
Explanation:
Given the following data;
Force = 903N
Distance = 126m
To find the workdone;
Workdone = force * distance
Substituting into the equation, we have
Workdone = 903 * 126
Workdone = 113778 Joules
Therefore, the amount of work, in joules, the gravity did on the asteroid is 113778.
Spring 1 and Spring 2 are the same type of spring. Both springs were pushed or compressed into different positions and clamped into place
L
Which spring has less potential energy?
Answer:
spring 1 has less potential energy
Explanation:
since spring 2 is clampped down further it will have a greater effect but since sping 1 is barely clamped down it wont show as much energy
The PE of an object is 2500 j. What is the mass of the object if it 4.0 m above the ground?
Answer:
The answer is 5.0
Explanation:
Hope that helped :D
A cannon shoots a 40 kg ball at a sailing ship and when it hits the
wall of the vessel it applies 2000N of force. How much was it
decelerated?
Answer:
ANSWER : 2000 / 40 = 50 m / s
What is the first step in the event of a fire in a building?
A) Call 911.
B) Before opening a door, check to see if it is hot.
C) Stop, drop, and roll.
D) Leave the building quickly, if possible.
Answer:
B or C
Explanation:
i don't if I'm right or not
what is the name of first magnet
Answer:
[tex]magnetite[/tex]
[tex]hope \: helps...[/tex]
A new prototype cup has been designed to keep liquids, such as hot coffee or cold annk, near their original temperature for long periods of time Which statement describes the function of the newly designed
cup
Answer:
hope this was good for u and I believe it would be solid
Are vaccines 100% effective and safe for absolutely everyone?
6/7 and 24/28 what is the answer proportion or no
Given that,
6/7 and 24/28
To find,
The above number are in proportion or not.
Solution,
First number is 6/7
Other number is 24/28
Multiply numerator and denominator by 4 to the first number.
[tex]\dfrac{6}{7}=\dfrac{6}{7}\times \dfrac{4}{4}\\\\=\dfrac{6\times 4}{7\times 4}\\\\=\dfrac{24}{28}[/tex]
So, 6/7 and 24/28 are in proportion.
Fraction A is proportional to fraction B because the value of fraction A is equal to fraction B.
Given the following data:
Fraction A = [tex]\frac{6}{7}[/tex]Fraction B = [tex]\frac{24}{28}[/tex]In this exercise, you're required to determine whether or not the two fractions are proportionate i.e whether fraction A is proportional to fraction B.
Two fractions are considered to be proportionate when the value of fraction A is equal to fraction B.
We would write fraction B in its simplest form by dividing both the numerator and denominator by their highest common factor (HCF).
HCF of 24 and 28 = 4.
Dividing by 4, we have:
[tex]Fraction\;B =\frac{24}{28}=\frac{6}{7}[/tex]
In conclusion, fraction A is proportional to fraction B because the value of fraction A is equal to fraction B.
Read more: https://brainly.com/question/18676621
Color is a result of the absorption and reflection of light. A shirt appears a color because it reflects that color of light. A shirt appears black when it absorbs all wavelengths of light.
Why does a shirt appear white outside on a sunny day?
O The light is transmitted through the shirt, so no color
wavelengths of light.
appears.
O The shirt absorbs the sunlight, so it appears white.
O All the light is reflected, so the shirt appears white.
The sunlight refracts when it hits the shirt, so the shirt
appears white.
Answer:
the light is reflected, because light is white when the spectrum is combined, and white reflects white. that's why wearing a white shirt outside feels cooler than wearing a black shirt, since it doesn't absorb light.
Answer:
All the light is reflected, so the shirt appears white.
Explanation:
Your science teacher needs to make more of a salt-water mixture. The
concentration of the mixture that is needed is 35 grams of salt in 1,000
milliliters of water. How many grams of salt will be needed to make 1,500
milliliters of the salt water?
Answer:
52.5 g of the salt
Explanation:
From the question given above, we were told that concentration of the mixture that is needed can be obtained as by dissolving 35 g of salt in 1000 mL of water.
Thus, we can obtain the mass of the salt needed to make 1500 mL of the salt water mixture as follow:
35 g of salt dissolves in 1000 mL of water.
Therefore, Xg of the salt will dissolve in 1500 mL of water i.e
Xg of salt = (35 × 1500)/1000
Xg of salt = 52.5 g
Thus, 52.5 g of the salt is needed to make 1500 mL of the salt water mixture.
A cat swats a ball on the coffee table. The ball rolls horizontally off the edge of a table. Which statement is true?
A. The balls horizontal velocity changes at the rate of 9.8 meters/second every second.
B. As the ball falls to the ground, it moves along a parabolic path.
C. No external vertical forces acts on the ball.
D. The ball had a constant vertical velocity.
Answer:
D
Explanation:
Think of a hydropower dam. How is electrical energy produced from potential and kinetic energy?
A 5 kg ball is dropped from a height of 200 meters on Earth.
a) What is the ball’s potential energy at its original height?
Answer:
9800 J
Explanation:
From the question given above, the following data were obtained:
Mass (m) = 5 kg
Height (h) = 200 m
Potential energy (PE) =?
Potential energy (PE) is the energy stored in an object by virtue of its location. Mathematically, it is expressed as:
PE = mgh
Where:
PE => is the potential energy.
m => is the mass of the object.
g => is the acceleration due to gravity.
h => is the height to which the object is located.
With the above formula, we can obtain the potential energy of the ball at its original height as follow:
Mass (m) = 5 kg
Height (h) = 200 m
Acceleration due to gravity (g) = 9.8 m/s²
Potential energy (PE) =?
PE = mgh
PE = 5 × 9.8 × 200
PE = 9800 J
Therefore, the potential energy of the ball at its original height is 9800 J
The world’s largest wind turbine has blades that are 80 m long and makes 1 revolution every 5.7 seconds.
What is the velocity for one of the blades?
(THIS IS PHYSICS, CIRCULAR MOTION)
Answer:
88.14 m/s
Explanation:
From the question given above, the following data were obtained:
Radius (r) = length of blade = 80 m
Revolution (rev) = 1
Time (t) = 5.7 s
Velocity (v) =?
The velocity of the blade can be obtained by using the following formula:
v = (rev × 2πr) / t
NOTE: Pi (π) = 3.14
v = (1 × 2 × 3.14 × 80) / 5.7
v = 502.4 / 5.7
v = 88.14 m/s
Therefore, the velocity of the blade is 88.14 m/s
A softball player slows to a stop while sliding
across the infield dirt into third base.
This situation can best be described as a transformation of
Kinetic energy into Chemical Energy
Kinetic energy into Dissipated energy (e.g., heat and sound)
Potential energy into Chemical energy
Chemical energy into Kinetic energy
Chemical energy into Dissipated energy (e.g., hot and sound)
Answer:
Chemical energy into Kinetic energy
Explanation: