Answer:
180Ns
Explanation:
Given parameters:
Force applied = 90N
Velocity = 15m/s
Time taken = 2s
Unknown:
Impulse applied to the cart = ?
Solution:
The impulse is effect of force acting on a body through time.
It is mathematically expressed as;
Impulse = Force x time
So;
Impulse on the car = 90 x 2 = 180Ns
Emma is doing a laboratory experiment to separate components of crude oil. She decides to use a technique that will separate the components
based on their boiling points. Which technique uses this principle?
A filtration
B. distillation
OC centrifugation
OD. chromatography
E.
titration
Answer:
B. distillation
Explanation:
The technique that will separate the components of crude oil based on their boiling points is distillation.
Fractional distillation is the approach used by oil industries to separate the different components of crude oil.
The components of the crude are called fraction. Sufficient amount of heat is applied to the crude in the fractionating column. As the boiling point of each constituent is attained, they rise as vapor in the column The vapor is channeled to the cooling part where the fraction is cooled and collected.PLS HELP I NEED A COMPLETE ANSWER AND PROCEDURE FOR THIS, IT'S TIMED
A motorcyclist heading east through a small town accelerates at a constant 4.0 m/s² after he leaves the city limits. At time t=0 he is 5.0 m east of the city-limits signpost while he moves east at 15 m/s. Where is he when his speed is 25 m/s?
Answer:
The motorcyclist is 55 miles east of the small town.
Explanation:
Motion With Constant Acceleration
It's a type of motion where the velocity of an object changes uniformly in time.
The equation that rules the change of velocities is:
[tex]v_f=v_o+at\qquad\qquad [1][/tex]
Where:
a = acceleration
vo = initial speed
vf = final speed
t = time
The distance traveled by the object is given by:
[tex]\displaystyle x=v_o.t+\frac{a.t^2}{2}\qquad\qquad [2][/tex]
Using the equation [1] we can solve for a:
[tex]\displaystyle a=\frac{v_f-v_o}{t}[/tex]
Solving [1] for t and substituting into [2] we get the following equation:
[tex]V_f^2=V_o^2+2aX[/tex]
The motorcyclist has an acceleration of a=4\ m/s^2 and an initial distance of 5 m where he travels at vo=15 m/s. It's required to calculate the distance when the speed is vf=25 m/s.
Solving the last equation for X:
[tex]\displaystyle X=\frac{V_f^2-V_o^2}{2a}[/tex]
Substituting:
[tex]\displaystyle X=\frac{25^2-15^2}{2*4}[/tex]
[tex]\displaystyle X=\frac{625-225}{8}[/tex]
X = 50 m
Adding the initial distance:
The motorcyclist is 55 miles east of the small town.
• CHALLENGE You need to move a 105-kg sofa to a different location in the room. It
takes a 403-N force to start the sofa moving. What is the coefficient of static friction
between the sofa and the carpet?
Answer:
μ = 0.391
Explanation:
The friction force is defined as the product of the coefficient of friction by the normal force. In this way, we have the following equation.
F = μ*N
Where:
F = friction force = 403 [N]
μ = static coefficient
N = Normal force [N]
And the normal force of a body lying on a horizontal surface can be calculated by means of the product of mass by gravitational acceleration.
[tex]N=m*g\\N=105[kg]\\g=9.81 [m/s^{2} ]\\N=105*9.81\\N=1030.05[N][/tex]
Now we can clear the static coefficient
[tex]403=u*1030.05\\u=0.391[/tex]
What speed would a fly with a mass of 0.638 g need in order to have 74354.5 j of kinetic energy
Answer:
v = 15,267 m/s
Explanation:
Kinetic Energy
Is the type of energy of an object due to its state of motion. It's proportional to the square of the speed.
The formula to calculate the kinetic energy is:
[tex]\displaystyle K=\frac{1}{2}mv^2[/tex]
Where:
m = mass
v = speed
The kinetic energy is often expressed in Joules (J)
We are given the mass of a fly m=0.638 g and we need to calculate its speed in order to have a kinetic energy of 74354.5 J.
Converting:
m=0.638 g /1000 = 0.000638 kg
To find the speed, we solve the formula for v:
[tex]\displaystyle v=\sqrt{\frac{2K}{m}}[/tex]
[tex]\displaystyle v=\sqrt{\frac{2K}{m}}[/tex]
Substituting:
[tex]\displaystyle v=\sqrt{\frac{2*74354.5}{0.000638}}[/tex]
v = 15,267 m/s
(The fly should move faster than a rocket)
what energy does a car have when you fill it up
Answer:
mechanical energy
Explanation:
Answer:
When you fill it up its chemical energy but it gets transformed into mechanical energy.
Explanation:
The internal combustion engine, which is utilized in most automobiles, has allowed for the transfer of chemical energy into mechanical energy. This provides locomotion for the vehicle as it is driving.
Peppered moths use the adaptation of camouflage as protection from predators. They may have a variety of colors or shades, but before the Industrial Revolution, they were typically white with black speckles. The Industrial Revolution in the 1880s introduced large-scale pollution into the environment. The pollution resulted in widespread, dark-colored staining of buildings and trees.
Answer:
See the answer below
Explanation:
Peppered moths use the adaptation of camouflage as protection from predators. They may have a variety of colors or shades, but before the Industrial Revolution, they were typically white with black speckles. The Industrial Revolution in the 1880s introduced large-scale pollution into the environment. The pollution resulted in widespread, dark-colored staining of buildings and trees. Which is the most likely effect of the Industrial Revolution on peppered moths in cities?
The correct answer would be that the population of light-colored moths decreased and the population of dark-colored moths increased.
Organisms evolve so as to adapt to changes in their environment for continued survival. Peppered moths served as preys for birds and one of the adaptations to survive is adaptive coloration. In an environment characterized by dark-colored buildings and trees, light-colored moths would easily be picked out by predating birds, unlike dark-colored ones.
Hence, more of the light-colored moths would be picked out by predators while the dark-colored ones would be able to reproduce and multiply at a faster rate than their counterparts. The implication is that there would be a decrease in the population of light-colored moths and an increase in the population of the dark-colored ones.
complete the sentences
A flow of negatively charged electrons is an ____________
Answer:
a flow of negatively charged electrons is an
electric current
Calculate the average speed of a toy car that travels 20m in 40s
Answer:
2 per s
Explanation:
divid 40 and 20 it gives you = 2
Answer:
2m in 4s
Explanation:
A car has a displacement of –140 miles.
If east is taken as the positive direction, which option correctly describes the displacement of the car?
The car is east of its starting position but is moving toward the west.
The car is west of its starting position.The car is west of its starting position. , ,
The car is west of its starting position but is moving toward the east.
The car is east of its starting position.
Answer:The car is east of its starting position but is moving toward the west.
Explanation:
A 40 kg dog is sitting on top of a hillside and has a potential energy of 1,568 J. What is the height of the hillside? (Formula: PE = mgh)
3.9 m
4.0 m
39.2 m
40.0 m
Answer:
B) 4.0
Explanation:
Jus took the test on E D G E
Answer:
b 4.0 m
Explanation:
how can you grow taller in a small amount of time?
Answer:
.
Explanation:
Answer:
do sports eg skipping rope, playing basketball, badminton etc. in other words, activities that involve jumping
In a longitudinal wave, amplitude can be measured
from the distance between high pressure areas of
the wave called
will give brainliest please help me
Answer:
Compressions
Explanation:
A longitudinal wave is a wave in which the direction of propagation of the wave and the direction of the displacement of the particles of the wave are parallel.
As the wave propagates, the particles do not move, but, oscillate back and forth about their equilibrium position, and there are thus regions of high pressure called compressions and regions of low pressure called rarefactions.
The amplitude is thus the distance between successive compressions.
1.) What is the equation for Average Speed?
PLEASE HELP PLEASE HELP PLEASE HELP PLEASE HELP PLEASE HELP PLEASE HELP PLEASE HELP PLEASE HELP PLEASE HELP PLEASE HELP PLEASE HELP PLEASE HELP PLEASE HELP PLEASE HELP PLEASE HELP
I NEED TO GIVE THIS IN TODAY!!!
Answer:
a) greater
smaller
Explanation:
A saturated solution is formed by keeping 48 gram of a salt in 200 gram of water at 35°C. calculate the solubility of the salt.
The solubility of the salt. : 24 g/100 g solvent(water)
Further explanationGiven
48 gram of a salt in 200 gram of water at 35°C
Required
The solubility of the salt.
Solution
Solubility : the amount of a substance that can be dissolved in a solvent
Can be formulated(for 100 g solution)⇒grams solute per 100 g of solvent(100 ml water)
[tex]\tt solubility=\dfrac{mass~solute}{mass~solvent}\times 100[/tex]
Input the value :
[tex]\tt solubilty=\dfrac{48~}{200~g}\times 100=24~g[/tex]
If a horse trots past the fence post located 14 m to the left of the gate post and then passed another fence post located 15 m to the right of the gate Post 14 seconds later what is the average velocity of the horse
Answer:
19 miles away from the home
The average velocity of the horse at the given displacement is 2.07 m/s.
The given parameters:
Initial position of the horse, x₁ = 14 m leftFinal position of the horse, x₂ = 15 m rightTime of motion of the horse, t = 14 sThe average velocity of the horse is determined as the ratio of the total displacement to time of motion.
[tex]v = \frac{\Delta x}{\Delta t} \\\\v = \frac{x_2 - x_1 }{t} \\\\v = \frac{15 - (-14)}{14} \\\\v = \frac{15 + 14}{14} \\\\v = \frac{29}{14} \\\\v = 2.07 \ m/s[/tex]
Thus, the average velocity of the horse at the given displacement is 2.07 m/s.
Learn more about average velocity here: https://brainly.com/question/6504879
What is the Gravitational Potential Energy of a 30kg block resting 5m above the ground?
O 150 J
O 1500 )
O 6J
O 60)
Answer:
1470J
Explanation:
Given parameters:
Mass of the block = 30kg
Height = 5m
Unknown:
Gravitational potential energy = ?
Solution:
The Gravitational potential energy of body is due to its position above the ground level.
Gravitational potential energy = mass x acceleration due to gravity x height
So;
Gravitational potential energy = 30 x 9.8 x 5 = 1470J
5. It takes you 5 hours to complete a 375-kilometer trip. What was your average speed on this trip?
Answer:
the average speed on this trip is 75 km/h
Answer:
75 km/h
Explanation:
A 7.30-kg bowling ball is on a storage rack that is 1.12 m above
the floor. The bowling ball suddenly falls and narrowly misses
I
your toes,
Answer:
80.12J
Explanation:
Given parameters:
Mass of the bowling ball = 7.3kg
Height of the storage rack = 1.12m
Unknown:
Energy the ball would have exerted = ?
Solution:
To solve this problem, the potential energy is the best parameter to use.
Potential energy is the energy due to the position of a body. It is expressed as:
Potential energy = mass x gravity x height
So;
Potential energy = 7.3 x 9.8 x 1.12 = 80.12J
A block is on a surface with us=0.276. It takes 1.11 N to break it free from static friction. What is the mass of the block?
Answer:
m = 0.409 [kg].
Explanation:
The friction force is defined as the product of the coefficient of friction by the normal force. In this way, we have the following equation.
F = μ*N
Where:
F = friction force = 1.11 [N]
μ = static coefficient = 0.276
N = Normal force [N]
We can clear the normal Force.
[tex]N=F/u\\N=1.11/0.276\\N=4.02[N][/tex]
And the normal force of a body lying on a horizontal surface, can be calculated by means of the product of mass by gravitational acceleration.
[tex]N=m*g\\4.02=m*9.81\\m=0.409[kg][/tex]
Answer:
.409
Explanation:
its the right answer for acellus
we use a plane mirror to see our face,Why?
Answer:
Plane mirror causes regular reflection of light. When a parallel beam of light is incident on a plane mirror it is reflected back parallely. Due to this property a plane mirror is used to see our image and not a rough surface
If a car is moving at a constant velocity of 10 m/s, what is its acceleration?
10 m/s
10 m/s^2
0 m/s^2
1 m/s^2
Answer:
If a car is moving at a constant velocity of 10 m/s, there will be no change in the velocity per time.
Acceleration is the rate of change of velocity
Acceleration=(Final velocity-Initial velocity)/Time
Acceleration=(10m/s-10m/s)/Time= 0 m/s²
★ 0 m/s² is the right answer.if i fly to space without a space suit what color is the air
Answer:
well you'd be dead
Explanation:
Answer:
You can go to space without a suit if you capsule has a pressured cabin.
Explanation:
But, to go out side of the unit, you need a pressure suit with oxygen. No body knows really what color space really is. But we will know soon. However, they say it smells like garbage and methane when they open the locks on the ISS to get cargo in. God Bless.
1. State any ten examples of good conductors of heat.
2. Write down five uses of good conductors.
Answer:
Examples of Good conductors of heat are,Gold
Sliver
Copper
Mercury
brass
bronze
Lead
Aluminum
Uses of good conductors of heatUsed for making kettles
Used for making sauce pans
Good Uses:
Utensils Food can be cooked Water can be boiledHomes can be warmed Shirts can be ironedConductors of Heat:
AluminumLeadBrassBronze MercuryGoldSliver CopperHow would a neutral and positive ball react to eachother
Answer:
They would attract one another
Explanation:
The interaction between two like-charged objects is repulsive. ... Positively charged objects and neutral objects attract each other negatively charged objects and neutral objects attract each other.
What is the correct order of the numbers: {1.45, 0.023, 10, 1.100, 1.00004} in order from lowest to highest (lowest first) number of significant figures.
1.100, 1.45, 10, 0.023, 1.00004
1.00004, 1.100, 0.023, 1.45, 10
10, 0.023, 1.45, 1.100, 1.00004
0.023, 10, 1.45, 1.100, 1.00004
Explanation:
0.023, 1.0000004, 1.100
a car is traveling at 20 meters/seconds anf is brought to rest by applying breaks over a period of 4 seconds. what is its average acceleration over this time in time interval
Answer:
2.5m/s²
Explanation:
Given the following:
Initial velocity u = 0m/s
Final velocity v = 20m/s
Time t = 4s
Required
average acceleration over this time in time interval
Using the equation of motion
v = u + at
10 = 0 + a(4)
10 = 4a
a = 10/4
a = 2.5m/s²
Hence its average acceleration over this time in time interval is 2.5m/s²
Pls help I really need help w this one Tnks
The force of friction between an object and the surface upon which it is sliding is 14N and the coefficient of friction between them is 0.72. What is the weight of the object?
Answer:
14 x 0.27 = 3.78 is your answer
Explanation:
the question is asking for the weight of the object so you multiply and get 3.79
How does the launch angle affect the maximum height reached by a ground launched projectile?
Answer:
The maximum height is determined by the initial vertical velocity. Since steeper launch angles have a larger vertical velocity component, increasing the launch angle increases the maximum height.
Explanation:
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