Answer:
Not sure but I found this “Originally developed as a wallpaper cleaner, Play-Doh compound is now the #1 reusable modeling compound, with over 500 million cans produced each year,” the document states.
Explanation:
It was a children versus grown-ups competition at school. One event required the adult to throw a basketball as far as he could. When it was the child's turn, he had to throw a baseball instead. The event coordinator said, "It's only fair!" Based on Newton's laws, was this event fair?
Yes, because acceleration doesn't depend on the size of the object.
Yes, because an adult can apply more force than a child can. Making the adult's object bigger than the child's object helps to even out the acceleration.
No, because you must have the same size object in a competition.
No, because a basketball is bigger than a baseball, and objects that are bigger accelerate slower.
Answer:
No, because a basketball is bigger than a baseball, and objects that are bigger accelerate slower.
Explanation:
If a motorbike of mass 150 kg moving with the speed of 36 km/hr produces
acceleration of 5 m/s3
in 5 sec, What will be the power developed on it?
Answer:
P = 7500 [W]
Explanation:
First We must use Newton's second law to find the force. Newton's Second Law tells us that the sum of forces on a body is equal to the product of mass by acceleration.
∑F = m*a
where:
m = mass = 150 [kg]
a = acceleration = 5 [m/s²]
[tex]F = 150*5\\F = 750 [N][/tex]
We know that the work is determined by multiplying the force by the distance, in this way the units of the work are [N*m] which corresponds to 1 Joule [J].
And the power is determined by dividing the work by the time, in this way we have that [J/s] corresponds to 1 [W].
We must convert the speed from kilometers per hour to meters per second.
[tex]36[km/hr]*1000[\frac{m}{1km}]*[\frac{1hr}{3600s} ]=10 [m/s][/tex]
[tex]P=F*v[/tex]
where:
P = power [W]
F = force = 750 [N]
v = 10 [m/s]
[tex]P = 750*10\\P = 7500 [W][/tex]
If you are driving a vehicle at night, dim your lights by switching to low-beams before you are ____ ft from a vehicle coming toward you
Answer:
20 ft I think but I'm not too sure.
Answer:
If you are driving with your high-beam lights on, you must dim them at least 500 ft from any oncoming vehicle, so you don't blind the oncoming driver. You must use low-beam lights if you are within 200-300 ft of the vehicle you are following.
3. You have $20, and Uncle Harny gives you $10 each second
for 3 seconds. How much money do you have after 3 seconds?
Cale heated a 2 kg water sample from 0* C to 50* C in 3 minutes. The specific heat for water is 4184 J /kg.C*, what was his change in thermal energy
Answer:
[tex]418400\ \text{J}[/tex]
Explanation:
m = Mass of water = 2 kg
c = Specific heat of water = [tex]4184\ \text{J/kg}^{\circ}\text{C}[/tex]
[tex]\Delta T[/tex] = Change in temperature = [tex](50-0)^{\circ}\text{C}[/tex]
Change in thermal energy is given by
[tex]Q=mc\Delta T\\\Rightarrow Q=2\times 4184\times (50-0)\\\Rightarrow Q=418400\ \text{J}[/tex]
Cale's change in thermal energy was [tex]418400\ \text{J}[/tex].
A car of mass 1500 kg starting from rest can reach a speed of 20
m/s within 10 seconds. Calculate the accelerating force of the car
engine.
Explanation:
F=MA
where, M=1500kg
A=v-u/t
A= 20-0/10
A=2m/s2
F=MA
F=1500 * 2
F=3000N
The nuclear power used for electricity is produced by
a. fusion
c. a chemical reaction.
b. fission.
d. radon gas.
Answer:
b.fission.Explanation:
Please mark my answer as a brainliest.Please follow me ❤❤❤Who invented the wedge simple machine and why?
Answer:
Gene Sarazen began to win tournaments in 1935 with a new club he had invented that was specialized for sand play. He is hailed as the inventor of the sand wedge.
Explanation:
A wedge is a triangular shaped tool, and is a portable inclined plane, and one of the six classical simple machines. It can be used to separate two objects or portions of an object, lift up an object, or hold an object in place. It functions by converting a force applied to its blunt end into forces perpendicular (normal) to its inclined surfaces. The mechanical advantage of a wedge is given by the ratio of the length of its slope to its width.[1][2] Although a short wedge with a wide angle may do a job faster, it requires more force than a long wedge with a narrow angle.
The force is applied on a flat, broad surface. This energy is transported to the pointy, sharp end of the wedge, hence the force is transported.
The wedge simply transports energy and collects it to the pointy end, consequently breaking the item. In this way, much pressure is put on a thin area.
You can only score 1 point when shooting a free throw. Group of answer choices True False
Answer:
true
Explanation:
When shooting a free throw you can only receive 1 point for the team
WAVES AND SOUND
A girl, standing 150m in front of a tall building, fires a shot using a starting pistol. A boy, standing
350 m from the girl, hears two bangs 1s apart.
From this information, what is the speed of sound in air?
C 500 m/s
D 650m/s
B 350m/s
A 300 m/s
Answer:
i think it is B
Explanation:
What is the potential energy of a 150 kg diver standing on a diving board that is 10 m high?
The potential energy is ______ J.
Answer:
15,000 JExplanation:
The potential energy of a body can be found by using the formula
PE = mgh
where
m is the mass
h is the height
g is the acceleration due to gravity which is 10 m/s²
From the question we have
PE = 150 × 10 × 10
We have the final answer as
15,000 JHope this helps you
Answer:
14,700
Explanation:
Un automobil pleaca din dreptul bornei kilometrice 134 la ora 10h si 20 min si ajunge in dreptul bornei kilometrice 219 la ora 11h si 20min.Calculati viteza medie a automobilului
Răspuns: 23. 6 m / s
Explicaţie:
Pentru a obține viteza medie a mașinii:
Luăm viteza medie a mașinii:
Modificarea distanței / schimbarea timpului
Schimbarea distanței:
(219 - 134) KM = 85 km
Schimbarea în timp:
(11 ore 20 min) - (10 ore - 20 min) = 1 oră
Prin urmare, viteza medie:
Schimbarea distanței / schimbarea timpului
85/1 = 85 km / oră
În metru pe secundă:
(85 * 1000) m / 3600
85000/3600 USD = 23,6 m / s
2) How could a motorcycle (a vehicle with less mass) make a van (a
vehicle with more mass) move? *
it depends upon what state they are in like in motion or res
A 4.5 kg rabbit moves with a constant acceleration of 2.1 m/s2. Determine the net applied force responsible for the acceleration. *
Answer:
F = 9.45 N
Explanation:
Given that,
Mass of a rabbit, m = 4.5 kg
It moves with a constant acceleration of 2.1 m/s².
We need to find the net applied force responsible for the acceleration. We know that net force is equal to the product of mass and acceleration. SO,
F = ma
F = 4.5 kg × 2.1 m/s²
F = 9.45 N
So, the net applied force is 9.45 N.
what is the correct answer?
Answer:
(B) 39
Explanation:
Use synthetic division:
-2 | 3 0 -1 3 1
____-6 12 -22 38
3 -6 11 -19 | 39
This means that the remainder is 39
A hawk in level flight 135m above the ground drops the fish it caught. If the hawk horizontal speed is 20m/s, how far ahead of the drop point will the fish land
PLZZZ HELP!!!
State the forces in a spring, magnets, electric scales, and a newton metre
Answer:
The various kinds of forces that exist in the items below are:
Spring = Spring Force
Magnet = Magnetic Force
Electric Scale = Electric Force
Newton Metre = Spring Force
Explanation:
Spring Force:
When you fix an object unto or upon a spring, the resulting compression or stretching exerted by that object on the spring is called the Spring Force. Conversely, the object is acted upon by the force that brings back the object to its state of equilibrium of rest.
Magnetic Force:
The motion between electrically charged particles always results in magnetic force. This is the primary force that is active in electric motors and normal magnets.
Electric Force
In order to create an electric force, you'd need to charge two particles and bring them in proximity to one another. Usually, they'll either repel or attract one another. This attraction or repulsion is known as an electric force.
Cheers
An object with a mass of 20 kg is moving at a speed of 3 m/s. What is the kinetic energy of the object?
Answer:
[tex] \huge{ \boxed{ \bold{ \sf{90 \: joule}}}}[/tex]
✑ First , Let's know what kinetic energy is :
⇾ The energy possessed by a body by the virtue of it's motion is called kinetic energy of the body. A flying bird , a moving car , running water , wind , a bullet fired from a gun , an arrow left from a bow , rolling stone etc are some examples of kinetic energy.
The Kinetic energy of a moving body is determined by the formula :
[tex] \boxed{ \underline{ \sf{KE= \frac{1}{2} m {v}^{2} }}}[/tex]
Here ,
m = mass of the bodyv = velocity of the body--------------------------------------------------------------
☇ Now , Let's solve :
☄ Given :
Mass of the object ( m ) = 20 kgVelocity of the object ( v ) = 3 m/s☄ To find :
Kinetic energy of the object⤿ [tex] \boxed{ \sf{KE= \frac{1}{2} m {v}^{2} }}[/tex]
Plug the values and simplify :
→ [tex] \sf{ \frac{1}{2} \times 20 \times {(3)}^{2} }[/tex]
→ [tex] \sf{ \frac{1}{2} \times 20 \times 9}[/tex]
→ [tex] \boxed{ \bold{\sf{90 \: joule}}}[/tex]
Hope I helped !
Have a wonderful day ! ツ
~TheAnimeGirl ♡
8.Answer the following questions based on the Lewis dot structure for carbon dioxide
on the right. (4 points)
a). Why does carbon dioxide have a higher bond order than water?
b). What does this bond-order difference mean, in terms of bond energy?
A number of energy transformations occur when water that is stored behind a dam is changed into electrical energy. For each step listed, identify the energy transformation. Lake water flows downward through tunnels. Flowing water turns turbines. Turbines generate electricity.
Answer:
Explanation
✔ potential to kinetic
✔ kinetic to mechanical
✔ mechanical to electrical
Answer:
b , c , b is the answer
Explanation:
Science question: How do humans use the magnetic field for navigation?
Answer:
Magnetoreception (also magnetoception) is a sense which allows an organism to detect a magnetic field to perceive direction, altitude, or location. This sensory modality is used by a range of animals for orientation and navigation, and as a method for animals to develop regional maps.
Explanation:
Numerical problems:
A force of 500N acts on the area of 2.5m2; calculate the pressure
exerted,
(Ans: 200 Pa]
b. Calculate the force applied when 400 Pa of pressure is exerted by a box
of surface area 2m2.
(Ans: 800 N]
The weight of a stone is 1400N. If it exerts a pressure of 700 Pa, calculate
the area.
(Ans: 2m]
d. A force of 2000 N acts on 5m² surface area. Calculate the pressure
exerted.
(Ans: 400 Pa]
c.
Answer:
this is answer please mark me as brainlest
Explanation:
A force of 500N acts on the area of 2.5m2; calculate the pressure
exerted,
(Ans: 200 Pa]
b. Calculate the force applied when 400 Pa of pressure is exerted by a box
of surface area 2m2.
(Ans: 800 N]
The weight of a stone is 1400N. If it exerts a pressure of 700 Pa, calculate
the area.
(Ans: 2m]
d. A force of 2000 N acts on 5m² surface area. Calculate the pressure
exerted.
(Ans: 400 Pa]
c.
PART B
Click on each blank box and select the phrase to complete the flow chart modeling how energy drives the processes that widen the cracks in the rock.
1. Blank _______
answer choices for number 1 is
A. expansion of ice widens cracks in the rock.
B. liquid water freezes on Top of the Rock, making it harder to break.
C. pieces of rock break off into smaller rocks and sediment.
D. water seeps into cracks in the rock.
2. Thermal energy is removed and the water in the cracks freezes.
3. Blank ______
Answer choices for number 3 is
A. expansion of ice widens cracks in the rock.
B. liquid water freezes on Top of the Rock, making it harder to break.
C. pieces of rock break off into smaller rocks and sediment.
D. water seeps into cracks in the rock.
4. Blank ______
Answer choices for number 4 is
A. expansion of ice widens cracks in the rock.
B. liquid water freezes on Top of the Rock, making it harder to break.
C. pieces of rock break off into smaller rocks and sediment.
D. water seeps into cracks in the rock.
Answer:
can u take a ss?
Explanation:
PLS HELP ME WORTH 10 freakin points
1-1
2-3
3-2
4-4
This is the match
These the flow of electrons (the current) and where some of the electrons' energy gets converted into heat. (Lessons 5.01-5.03) Question 1 options: electric currents Insulators Resistors Conductors
Answer:
Conductors.
Explanation:
Conductors allow the flow of electrons i. e. the current and where some of the electrons energy gets converted into heat while some electrons energy converted into light. Conductors are the materials which has the ability to allow heat and electricity to flow through them. Metals such as gold, copper, Silver, Aluminum, Mercury, Steel, Iron and salty water etc are good conductors of heat and electricity.
Source-monitoring error is one explanation for unintentional plagiarism.
Please select the best answer from the choices provided
T
F
Answer:
True
Explanation:
Source-monitoring error is one explanation for unintentional plagiarism. This is true.
What is source monitoring error?An example of a source-monitoring error is when a memory is incorrectly assigned to a particular recalled experience. People might, for instance, hear about a current occurrence from a friend but subsequently claim to have read about it in the newspaper, which represents a false source attribution.
This error happens when the regular perceptual and reflecting processes are interfered with, either by the source information's limited encoding or by the source monitoring system's judgement processes.
Sometimes local current affairs are copied in difference digital and print media which leads to Source-monitoring error and unintentional plagiarism.
To learn more about source-monitoring error; refer the link:
https://brainly.com/question/9429172
#SPJ6
I just want to finish this quiz and go to sleep, please help me get this done.
Using language from newton's laws of motion, describe why the space shuttle seen in the picture is able to take off.
Answer:
newton's inertia law
something goes one way while the other goes the opposite direction.
Explain why an open umbrella will hit the ground after a closed umbrella
Answer:
An open umbrella would not hit the ground before the closed one. Explanation: The closed umbrella would hit first because it doesn't have as much air pressure hitting it. The open one has air pushing against it making it to where the open umbrella floats but falls slowly.
An open umbrella will hit the ground after a closed umbrella because it has
a larger surface area and more air pressure and resistance.
An open umbrella has more surface araea which means more air particles
interacting with it. This slows it down and is the reason it hits the ground
after the closed umbrella.
Closed umbrella on the other hand have a smaller surface area and less air
resistance which is why it hits the ground faster.
Read more on https://brainly.com/question/24882838
Chemists use the periodic table to organize the elements. What are some ways in
which this organization is useful? Select all that apply by writing the letter(s) of
the correct choice(s) in the yellow box.
A. It groups elements that have similar properties.
B. It identifies which elements are most common and which are rare.
C. It allows scientists to predict how a particular element will interact with others,
D. It arranges elements in order of usefulness for human activities.
Answer:
A. It groups elements that have similar properties.
C. It allows scientists to predict how a particular element will interact with others,
Explanation:
The periodic table of elements is a very useful table in chemistry which allows for the grouping of elements based on their atomic number.
Atomic number of elements is the number of protons they contain. The periodic table is based on the periodic law.
On the periodic table, there are trends and patterns from groups to groups and periods to periods.
It has been shown that elements in the same group have similar chemical properties. This is due to the number of valence electrons they have. Also, based on the chemical and physical properties of a group, we can predict if the elements in one group will react with elements in another groupA car traveled 60 km in 2 hours,84 km in the next 1 hour, and then 68 km in 2 hours before reaching its destination. What was the cars average speed.
