Explanation:
Using Equations of Motion :
(1) v = u + at
24 = 6.5 + a * 210
a (Acceleration) = 0.083 m/s^2
(2) v^2 = u^2 + 2aS
S = 576 - 42.25 / 0.166
S (Distance travelled) = 3215.3 m
(Option A seems a typo since the answer is 3215.3 m)
Init. A
almatien
Quiz 1
As shown in the figure below, Justin walks from the house to his truck on a windy day. He walks 20 m
toward the truck, 15 m back to retrieve his wind-blown hat, and another 20 m to reach the truck. He
walked a total time of 75 s.
20 m
15 m
20 m
What is Justin's average velocity over the 75 s period?
Answer:
v = 1/3 m / s = 0.333 m / s
in the direction of the truck
Explanation:
The average speed is defined by the variation of the position between the time spent
v = Δx / Δt
since the position is a vector we must add using vectors, we will assume that the displacement to the right is positive, the total displacement is
Δx = 20 - 15 +20
Δx = 25 m
therefore we calculate
v = 25/75
v = 1/3 m / s = 0.333 m / s
in the direction of the truck
As shown in the figure below, Justin walks from the house to his truck on a windy day. He walks 20 m toward the truck, 15 m back to retrieve his wind-blown hat, and another 20 m to reach the truck. He walked a total time of 75 s.
Answer:
What is Justin’s average velocity over the 75 s period?
Answer: 0.33 m/s
What is Justin’s average speed over the 75 s period?
Answer: 0.73 m/s
Use the reaction equation to answer the question
6CO2 + 6H20 - C6H12O6 + 602
The reaction equation shows a common chemical reaction. Where does this reaction commonly occur?
A
in soap mixed with oil
B
in candle wax as it burns
С
in the leaves of a plant
D
in animals digestive systems
Answer:
C
Explanation:
in the leaves of a plant where photosynthesis occurs
What is an atom? What it is made of? Explain with a paragraph.
Answer:
An atom makes up almost everything; it is the building block of this universe. An atom is made out of protons, electrons, and neutrons. Protons are positively charged particles, Electrons are negatively charged particles, and Neutrons are neutral. The protons, and neutrons are found in the very center of the atom, which is called the nucleus. The electrons orbit the nucleus.
Hopefully, this helps! :D
Ask your question below!
Answer:
Atoms make up everything, and they are made out of protons, neutrons, and electrons.
Explanation:
Hopefully its correct, have a nice day! :)
what is torque...........m
Answer:
Torque is the rotational equivalent of linear force. Torque is the engine's rotational force.
Hope this helps..
Explanation:
The elements least likely to form bonds are found in which group?
O 15
O 16
017
O 18
The element that is least likely to form bonds is found in group 18. Thus, the correct option for this question is D.
What is group 18 of the periodic table known?The elements of group 18 in the modern periodic table are known as noble gases. These gases are colorless, odorless, tasteless, and nonflammable under standard conditions.
They were once labeled group 0 in the periodic table because it was believed they had a valence of zero, meaning their atoms cannot combine with those of other elements to form compounds.
Due to this fact, they would not have any ability to form bonds with other elements in order to produce compounds or molecules. They are the most stable elements because they have a full outer shell of valence electrons, so they have no need to bond with other elements.
Therefore, the element that is least likely to form bonds is found in group 18. Thus, the correct option for this question is D.
To learn more about Noble gases, refer to the link:
https://brainly.com/question/1984010
#SPJ6
A 2011 Porsche 911 Turbo S goes from 0-27 m/s in 2.7 seconds. What is the
car's acceleration?
0 to 60 mph in 4.5 seconds
Explanation:
Which of the following is not a way to make exercising on a cold day safer?
A. Wear gloves and thick socks.
B. Dress in several layers instead of wearing one bulky garment for warmth.
C. Drink hot tea during your workout.
D. Wear a synthetic or wool hat.
I NEED HELP ASAP FIRST ANSWER GETS BRAINLIEST
Answer:
D.
Explanation:
I think its D. because Tea during a cold workout isnt safe at all. Drinking tea while working out adds weight and you just simply dont need tea when working out.. Hope this helps man :)
C. You shouldn't exercise while drinking hot tea because you can spill it and burn yourself especially while on a treadmill.
If this helped please mark me as brainliest!
[tex]\left[\begin{array}{ccc}Thanks,\\JustSomeIdiot\end{array}\right][/tex]
An ant is Dragging a Housefly and Elephant is pushing a big tree which is not moving. who is doing work? The ant or the elephant? Justify Your Answer!
Answer:
the ant
Explanation:
because work is done when there will be involvement of displacement in the direction of the force.
Answer:
The ant is doing work but the elephant is not
Explanation:
Work done = Force × Displacement
In case of ant and housefly,
Ants are dragging the housefly , so they are displacing the housefly from one point to the other by applying certain force , so we can say that they are doing work
In case of elephant and tree,
When the elephant is pushing the tree( applying force) , the tree is not moving which means that there is no Displacement, so work done will be
Work done = Force × Displacement
= Force × 0
= 0
GO
10 20
What is one standard kilogram define in Si system
Answer:
The mass of cylinder made up of alloy of platinum iridium that is kept at international bureau of weights and measures is called one standard kilogram.
The system of seven fundamental quantities is called SI system .
A car travels at a constant 1km per hour in the positive direction down a straight line highway. What is the displacement of the car 45 seconds later?
Explanation:
1 km/hr × (1000 m/km) × (1 hr / 3600 s) × 45 s = 12.5 m
Please help me! Ill give brainliest who helps me first!!!!
What is one difference between mixtures and pure substances?
A. mixtures can be physically separated
B. mixtures are made of one type of atom
C. pure substances have no chemical bonds
D. pure substances can be physically separated
What is the exact mass (a.m.u) of a electron? (First correct answer get Brainiest)
Answer:
0.00054386734
Explanation:
9.1093897*10-31 kg = 0.00054386734
Late in the paleozoic era the supercontient pangaea formed the climate in the center of pangea was probably ? A.) Extremely cold ,polar climate B.) Hot dry desert climate C.) Wet tropical climate D.) Warm mild climate
Answer:
The answer is (B). hot dry desert climate
Explanation:
(i feel so dumb )
10. Mrs. Wichert walked Riley for 30 minutes and a distance of 300 meters. Riley stopped often to smell things.
Which is the correct answer?
•Her speed was 10 meters/ minute
•Her speed was 9000 meters/minute
•Her average speed was 10 meters/minute
•Her velocity was 10 meters/minute
List one benefit and one limitation of using scientific models.
Answer:
the benefit is that they can see and experiment on the model but some times the model isn't accurate resulting in immediate failure
im only 13 sorry if this is wrong i tried.
How long does it take an object to accelerate from 12 m/s to the right to 32 m/s to
the right with an acceleration of 5 m/s2 to the right?
Answer:
4 seconds
Explanation:
Given:
v₀ = 12 m/s
v = 32 m/s
a = 5 m/s²
Find: t
v = at + v₀
32 m/s = (5 m/s²) t + 12 m/s
t = 4 s
All of the following devices tiſansmit energy/information: cell phones, walkie talkies, remote
controls, and sunlight. Which statement is true regarding these transmissions?
Answer:
All of the following devices transmit energy/information: cell phones, walkie talkies, remote controls, and sunlight.
They are all radiation.
I got a 100 on this test.
1. consider the free body diagram. If the sum of the tension forces is equal to the force of gravity, which description BEST applies?
answer. A girl hangs by both hands, motionless, from a trapeze.
2. What causes sea floor spreading ?
answer. Magma.
3. 10 n -> (BOx) <- 20 n Which expression represents the total force on the block ?
answer. 10n =+ -20n.
4. Which waves move by replacing one particle with another?
answer. Sound waves.
5. The table shows dates and appearance of index fossils. Which rock layers can be dated most precisely?
answer. a layer containing both a fossil from 1 and 2
This is an illustration of the ___ moon
answer. new.
hope these help
PLEASE HELP!! IM DUMB!!!!
In the atom nearly all the mass is found in the _______.
A. protons
B. nucleus
C. neutrons
D. electrons
WILL GIVE BRAINILY TO FIRST PERSON TO ANSWER!!!!
Complete this sentence. If volume remains the same while the mass of a substance ________, the density of the substance will_______________. increases, stay the same decreases, stay the same decreases, increase increases, increase
The answer is increase.
d = m/v. if you increase the mass without changing the volume, the density will increase.
Match the element with its description.
Column A
1. Sodium :
2. Silicon :
3. Bromine :
4. Argon:
Column B
a. Nonreactive gas
b. Has properties of both metals and nonmetals
c. Malleable, soft, and shiny
d. Highly reactive gas
What are the matches?
Answer:
1.c
2.b
3.d
4.a
Explanation:
There are your answers
Answer:
Sodium---Malleable, soft, and shiny
Silicon---Has properties of both metals and nonmetals
Bromine---Highly reactive gas
Argon---Nonreactive gas
The 500 pages of a book have a mass of 2.50 kg. What is the mass of each page A in kg B in mg?
Answer:
A.
Mass per page = mass of book / number of pages
Mass per page = 2.5kg / 500 pages = 0.005kg
B.
Mass per page = mass of book / number of pages
Total mass = 2.5kg = 2,500grams = 2,500,000mili grams
Mass per page = 2500000mg / 500 pages = 5000mg
Multi-Select Question
On Earth an astronaut weighs 980 Newtons (about 220 pounds) and has a mass of 100
kilograms. On the Moon, the same astronaut weighs 162.2 Newtons (about 37 pounds).
(Select 2 of 5 Answers)
What is the mass of this astronaut on the Moon, and what is the acceleration acting on the
astronaut's body when she is standing on the Earth?
MULITPLE CHOICE
Not enough information to solve
Mass on the Moon: 37 kilograms
Acceleration on Earth: 9.8 m/s/5
Acceleration on Earth: 1.6 m/s/s
Mass on the Moon: 100 kilograms
Answer:
Correct Options :
Acceleration on Earth: 1.6 m/s
Mass on the Moon: 100 kg
can someone explain what is electric energy???
The energy produce by electricity is known as electric energy.
Answer:
Electrical energy is energy derived from electrical potential energy or kinetic energy
Explanation:
when used loosely ,electrical energy refers to energy that has been converted from potential energy.
What makes human travel to the other planets in our solar system difficult?
Answer:
Taking water and oxygen from Earth is rather expensive and hard to do.
Explanation:
Without water and oxygen, travel to other planets is basically impossible
The smallest units of life that make up all living things are Group of answer choices tissues organ system organs cells
Answer:
Cells is your answer
Explanation:
Cells are the basic unit of life
hope this helped you
please mark as the brainliest (ㆁωㆁ)
- The school zone in front of your school has a posted speed limit of 25 mi/h, which is about 11 m/s. Let's
examine the stopping of a car in several different situations.
a. The crossing guard holds up her stop sign, and the driver is paying attention well. The car moves at a
constant velocity of 11 m/s for 2.3 seconds while the driver reacts, then slows down at a constant rate
of -4.5 m/s2. What is the stopping distance for the car in this situation?
Answer:
s = 38.7 m
Explanation:
First we calculate the distance covered during uniform motion of reaction time.
s₁ = vt
where,
s₁ = distance covered during uniform motion = ?
v = uniform speed = 11 m/s
t = time = 2.3 s
Therefore,
s₁ = (11 m/s)(2.3 s)
s₁ = 25.3 m
Now, we calculate the distance covered during decelerated motion:
2as₂ = Vf² - Vi²
where,
a = deceleration = -4.5 m/s²
s₂ = distance covered during decelerated motion = ?
Vf = Final Velocity = 0 m/s
Vi = Initial Velocity = 11 m/s
Therefore,
2(-4.5 m/s²)s₂ = (0 m/s)² - (11 m/s)²
s₂ = (-121 m²/s²)/(-9 m/s²)
s₂ = 13.4 m
the total distance will be:
s = s₁ + s₂
s = 25.3 m + 13.4 m
s = 38.7 m
Can you tell me what a substance is
Answer:
Explanation:
a particular kind of matter with uniform properties.
Answer:
a particular kind of matter with uniform properties or the real physical matter of which a person or thing consists and which has a tangible, solid presence.
Explanation:
Help please I give brainliest
Answer:
can someone help me with physics to
Answer:
equation D=mass/volume
D=m/v
example sample : D=m/v= 250/100 = 2.5 g/cm³
1- D=m/v = 454/2274 = 0.2 g/cm³
2- 1 liter = 1000 cm³
D=m/v=1000/1000= 1 g/cm³
3 - d=m/v
0.6 g/cm³=m / 1.2 cm³
m=0.6*1.2 = 0.72 g
4: a:171/15 = 11.4 g/cm^3 lead
b:148/40 = 3.7 g/cm^3 Aluminum
c:475/250 =1.9 g/cm^3 Bone
d: 680/1000 = 0.68 g/cm^3 Gasoline (lithium)
5: the density of a substance equal to the mass of the substance divide by volume
hey can anyone help me out pls!
If you try to squish a table it aint gonna move. That is because,
C. They are packed closely together.
A isn’t true.
B is true, they do vibrate, but that is NOT the reason why it doesn’t change when pressure is applied.
D is wrong because C is correct.
If size of an image is 10 cm and the magnification produced by a mirror is +1, what will be the size of object?
Answer:
h = 10 cm
Explanation:
The magnification produced by a mirror is given by :
[tex]m=\dfrac{h'}{h}[/tex]
h' is the image size and h is the object size
We have, h = 10 cm, m = +1
So,
[tex]m=\dfrac{h'}{h}\\\\h=\dfrac{10}{1}\\\\h=10\ cm[/tex]
So, the size off the object is same as that of the size of the image i.e. 10 cm.