Answer:
Increase friction
Explanation:
The others would make the object move faster
an object is thrown with an initial horizontal velocity of 10 meters per second and take approximately 9 seconds to reach the ground.considering air resistance to be negligible. what horizontal distance did the object travel
The horizontal velocity was constant, so:
[tex]s = vt[/tex]
[tex]s = 10\cdot9[/tex]
[tex]s = 90[/tex]
it traveled 90meters
If mass increases - Force of gravity increases
A. True
B.False
what is the value of sin square 60
Explanation:
[tex] \sin(60) = \frac{ \sqrt{3} }{2} \\ \\ \sin(60 ) {}^{2} = ( \frac{ \sqrt{3} }{2} ) {}^{2} \\ \\ \sin(60 ) {}^{2} = \frac{3}{4} [/tex]
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
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 CopperCan someone help me find the initial velocity?
Answer:
[tex]v_i=4.12\ m/s[/tex]
Explanation:
Given that,
Final velocity, [tex]v_f=0\ m/s[/tex]
Acceleration, [tex]a=-9.8\ m/s^2[/tex]
Displacement, [tex]\Delta x = 0.87\ m[/tex]
We need to find the initial velocity of the large hopper.
Using the third equation of motion as follows :
[tex]v_f^2=v_i^2+2a\Delta x\\\\0=v_i^2+2\times (-9.8)\times 0.87\\\\v_i^2-17.052=0\\\\v_i=4.12\ m/s[/tex]
So, the initial velocity of the large hopper is 4.12 m/s.
complete the sentences
A flow of negatively charged electrons is an ____________
Answer:
a flow of negatively charged electrons is an
electric current
In this reaction diagram which part represents the doffrence in energy between the reactants and the products?
Answer:
The correct answer is - option C. G.
Explanation:
In this reaction diagram, there is a representation of the reaction profile. The reaction profile shows the change that takes place during a reaction in the energy of reactants or substrate and products. In this profile, activation energy looks like a hump in the line, and the minimum energy required to initiate the reaction.
The overall energy of the reaction, including or excluding activation energy depends on the nature of the reaction if it is exothermic or endothermic. and products are represented by the G which shows the difference between the energy of the reactants and products.
Answer:
C.) G
Explanation:
:p
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
Olivia wants to find out whether a substance will fluoresce. She says she should put it in a microwave oven. Do you agree with her? Why or why not?
Answer:
The correct answer is - Disagree with her.
Explanation:
Fluorescence substances are the substances that glow when they absorbed visible light and ultraviolet radiation and objects will glow when put under Ultraviolet light and makes the molecules excited.
Microwaves have a different wavelength than ultraviolet radiation and therefore does not able to excite the molecule of the fluorescent objects. The microwave radiation will not glow.
Thus, the correct answer is - disagree with her.
HELP ME PLEASEEE
The gravitational force between two electrons 1.0 m apart is 5.42 x 10^-71. Find the mass of the electron.
Answer:
[tex]9.01\times 10^{-31}\ kg[/tex]
Explanation:
Given that,
The gravitational force between two electrons is [tex]5.42\times 10^{-71}\ N[/tex]
The electrons are 1 m apart.
The formula for the gravitational force is given by :
[tex]F=G\dfrac{m^2}{r^2}[/tex]
Where
m is the mass of the electrons
[tex]m=\sqrt{\dfrac{Fr^2}{G}} \\\\m=\sqrt{\dfrac{5.42\times 10^{-71}\times 1^2}{6.67\times 10^{-11}}} \\\\m=9.01\times 10^{-31}\ kg[/tex]
So, the mass of the electron is [tex]9.01\times 10^{-31}\ kg[/tex].
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 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:
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.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:
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.
How 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.
A 600kg car is at rest, and then it accelerates to 5 m/s.
What is the original kinetic energy?
What is its final kinetic energy?
How much work was used?
Answer:
1. 0 J
2. 7500 J
3. 7500 J
Explanation:
From the question given above, the following data were obtained:
Mass (m) of car = 600 Kg
Initial velocity (v₁) of car = 0 m/s
Final velocity (v₂) of car = 5 m/s
Original kinetic energy (KE₁) =?
Final kinetic energy (KE₂) =?
Work used =?
1. Determination of the original kinetic energy.
Mass (m) of car = 600 Kg
Initial velocity (v₁) of car = 0 m/s
Original kinetic energy (KE₁) =?
KE₁ = ½mv₁²
KE₁ = ½ × 600 × 0²
KE₁ = 0 J
Thus, the original kinetic energy of the car is 0 J.
2. Determination of the final kinetic energy.
Mass (m) of car = 600 Kg
Final velocity (v₂) of car = 5 m/s
Final kinetic energy (KE₂) =?
KE₂ = ½mv₂²
KE₂ = ½ × 600 × 5²
KE₂ = 300 × 25
KE₂ = 7500 J
Thus, the final kinetic energy of the car is 7500 J
3. Determination of the work used.
Original kinetic energy (KE₁) = 0
Final kinetic energy (KE₂) = 7500 J
Work used =?
Work used = KE₂ – KE₁
Work used = 7500 – 0
Work used = 7500 J
Course Task
As I sat under an Oak tree I recognized some similar comparisons to what Isaac Newton saw under his apple tree.
I saw three different objects fall to the ground…an acorn, a leaf, and a small stick. I wondered how and why they fell the way they did. The stick fell from the very top of the tree and seemed to almost “slow down” about half way down. The acorn got faster all the way to the ground. Yet the leaf would just float back and forth in a calm rhythm like motion.
Furthermore, I could see the moon sitting up in the sky just waiting to peak over the trees at dark.
How is it that all objects are apparently affected by the earth’s gravity but they seem to respond differently? If gravity is a force that affects all objects…shouldn’t all objects respond the same? Interesting Phenomenon huh….
Can you explain what is happening with each of these four objects (including the moon)?
Answer:
gravity effects only the mass of an object
Explanation:
an acorn is heavier that a stick and it's round shape gives it less wind resistance so gravity pulls it down faster. A stick vertical has little wind resistance but when rotated to when it is horizontal it has more resistance so it slows down but the the force of gravity is still as strong. A leaf has very little mass and it's shape provideds lots of wind resistance so it falls slower. The moon is not only effected by the earth's gravity it is also effected by the suns. It has its own gravity as well. with all these factors it stays in place and moves with the earth.
1.) What is the equation for Average Speed?
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
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
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
Please help it’s due soon!!!
Do you think it is possible for two neutral objects to both become positively charged after they are rubbed together? Justify your answer
Answer:
It is possible for neutral objects to become charged by rubbing them together due to friction. Electrons of one object transfer to the other resulting to more electrons in the object than its protons therefore leaving it as charged
Explanation:
I all ready said it 0>0
Answer:
no
Explanation:
because one itoms becomes positive and the other negative due to the transfer
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.
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.
Look at the chemical equation. There is a number in the chemical equation that is not a subscript. What do you think the number 2 on the right side of the chemical equation represents?
H2 + Cl2 → 2HCl
Answer:
Number of moles or volume
Explanation:
The number 2 on the right hand side signifies the number of moles of the product being formed.
It is necessary to include this number so as not to flout the law of conservation of mass when writing a chemical equation. The law of conservation of mass states that "matter is neither created nor destroyed during the course of a chemical reaction".
Since we must have equal number of matter on both sides of the expression, the coefficient number like the 2 seen in the expression is used to create a balance.
Here, 2 moles of HCl is formed which consists of 1 hydrogen atom and 1 chlorine atom.
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.
Hiiii guyssss please help meeee :)
The order should be: 20 glass mugs, 10 porcelain tea cups, 2 glass cups, and then 5 plastic cups.
Explanation:
You take the original mass of one single object, and then multiply it by the total number of that specific object. Hope this helps!
A car with a mass of 1,200 kg has a
velocity of 30 m/s west. What is the car's
momentum?
Answer:
slow
Explanation
because it weighs 1,200 kg and has a velocity of 30 m/s west. with all the friction causing it to become slower.
