Answer:
please mark brainlist
Explanation:
Initial speed u=80 km/h=80×185=22.22 m/s
Final speed v=60 km/h=60×185=16.67 m/s
Using v=u+at
Or 16.67=22.22+α×5
⟹ a=−1.1 m/s2
to crossing over the flooded canal.
A. throwing
B. tossing
C. rolling
D. catching
E. running
F. jumping
G. hopping
(this are skills)
I need an answer ASAP
Answer:
F. jumping
Explanation:
you can't throw/toss yourself, you cant roll over water, catching?, you cant run over water, jumps are bigger than hops
Some students in a Chemistry lab conducted an investigation in which they added four different solid substances to separate beakers of water. They stirred the mixtures for one minute and then recorded their observations in the table below.
Which most likely caused a new substance to be formed when mixed with water?
A. Substance 1
B. Substance 2
C. Substance 3
D. Substance 4
I need help with this physics question
Ms. Reitman's scooter starts from rest and accelerates at 2.0 m/s2
What is the scooter's velocity after 2 s?
Answer: 4 m/s
Explanation:
The scooter's velocity after 2 seconds of its start will be 4 m/s.
State first equation of motion?
The first equation of motion is -
v = u + at
Given is Ms. Reitman's scooter that starts from rest and accelerates at
2 m/s².
We can write -
[a] = 2 m/s²
[t] = 2 s
Using the first equation of motion, we can write -
v = u + at
v = 0 + 2 x 2
v = 4 m/s
Therefore, the scooter's velocity after 2 seconds of its start will be 4 m/s.
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2. Montesquieu's view of the separation of powers was later expressed in the United States Government through which document? A. The Declaration of Independence b. The United States Constitution c. The Two Treatises of Government d. The Social Contract
Answer: b. The United States Constitution
Explanation:
Montesquieu argued that the best form of government, was one where the legislative arm, executive arm, and judicial powers were separate. and in doing so helped kept each other in check to prevent any branch from becoming too powerful. Montesquieu’s separation of powers was not accurate when compared the government of England, But this was later adopted by Americans as the foundation of the U.S. Constitution.
The table shows the mass of and acceleration due to gravity for several
planets in the solar system. If air resistance is ignored, on which planet would
a space probe with a mass of 250 kg have the highest speed after falling 25
m?
Planet
Mass, 1024 kg
Acceleration due to gravity
Venus
4.87
8.9
Earth
5.97
9.8
Uranus
86.8
8.7
Saturn
568
9
A Earth
B. Saturn
C. Uranus
D. Venus
C. Uranus
What is acceleration due to gravity?Acceleration due to gravity is the acceleration gained by an object due to gravitational force.
Its SI unit is m/s2. It has both magnitude and direction.
According to the question,
Planet would a space probe with a mass of 250Kg
Distance is 25m.
As
Mass does not affect the speed of falling objects, As there is only gravity acting on it.
The mass of Uranus is:
m=8.681×10²⁵kg
The radius of Uranus is: r = 2.556 \times
Hence , Uranus is the answer
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Answer: Uranus 8.7
Explanation:
Because mass does not effect the velocity of a falling object, only gravity effects it and time. The equation is change in Velocity= 9.8m/s^2 times t (for time). So, ignore the mass and choose the lowest acceleration in the chart if your question asks you for the lowest speed.
A person starts at the origin and then walks 6 m to the west, and then 8 m south.
a. How far from the origin is the student’s final position?
b. What was the direction with respect to the origin?
please mark brainliest
Explanation:
Let the east direction to be i^ and north direction be j^.
Thus displacement of the man S=8i^+6j^
So, magnitude of displacement ∣S∣=62+82=100=10 m
How long will it take for a rock to fall 12 meters?
Answer:
1.56 seconds.
The rock will take 1.56 seconds to fall.
We have a rock.
We have to determine how long it will take for a rock to fall 12 meters.
State the second equation of motion.The second equation of motion is -
S = ut + 1/2 at²
According to the question -
initial velocity = u = 0 m/s
acceleration = a = 9.8 m/s²
distance = S = 12 meters
Using the second equation of motion -
S = ut + 1/2 at²
12 = 0 + 0.5 x 9.8 x t²
12 = 4.9t²
t² = 2.45
t = 1.56 seconds
Hence, the rock will take 1.56 seconds to fall.
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How far does a freely falling apple drop in 5.1 s after being released from rest?
Answer:
122.5 meters
Explanation:
g = 9.8 m/s^2 (standard value of g). so the freely falling body fall during the first 5 seconds will fall 122.5 meters if there is no external force work on it in an standard environment
The distance traveled by the apply after being released is 127.45 m.
The given parameters;
time of motion of the apple, t = 5.1 s
initial velocity of the apple, u = 0
The distance traveled by the apply is calculated by applying second kinematic equation as shown below.
Assuming downward motion to be positive.
[tex]s = ut + \frac{1}{2} gt^2\\\\s = 0 + 0.5\times 9.8 \times 5.1^2\\\\s = 127.45 \ m[/tex]
Thus, the distance traveled by the apply after being released is 127.45 m.
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HELP!!!!
How long would it take Jesse with an acceleration of -2.50 m/s2 to bring his bicycle with an initial velocity of 13.5 m/s to a complete stop?
Answer:
5.4 seconds
Explanation:
use the formula v(final)= v(initial)+at
0=13.5-2.5t
-13.5=-2.5t
t=5.4
please help me ASAP..
Answer:
graph will be..
------------------------
To do work, this truck uses energy stored in chemical
fuel and an electrical battery.
How much total energy does this truck put out?
O 50J
250
O 400
Input
energy
? J
Kinetic
energy
400 J
0800 J
Heat
250 J
Friction
150 J
800 J Got it right on edgenuity
"To do work, this truck uses energy stored in chemical
fuel and an electrical battery.
How much total energy does this truck put out?"
For your question "To do work, this truck uses energy stored in chemical fuel and an electrical battery. How much total energy does this truck put out?"
The answer would be 800 J
400 + 250 + 150 = 800
HURRY PLEASE!!
A car's horn emits a constant frequency as it accelerates away from a
stationary listener. Which of the following quantities appears to change for
the listener?
A. frequency only
B. frequency and pitch
C. pitch and loudness
D. amplitude and loudness
Answer:
answer is C
Explanation:
just did this
Answer:
Pitch and loudness
C.
Explanation:
Silicon slides are used in the manufacture of...........
Answer:
computer chips?
Explanation:
A scientific law seeks to explain why an event ocurred
True or false
I thank it’s true hope u have a good day
what is the iv and the DV in a rocket
an independent variable (IV) that you can change. • Typical IV's might be number of fins, length of rocket, type of material, mass of the rocket. • Choose one dependent variable (DV) and make three launches per DV for each IV for a total of. six launches..
Explanation:
Which statement best compares potential and kinetic energy?
A. Objects always have more potential energy than kinetic energy.
B. Only kinetic energy increases when the velocity of an object increases.
C. Only potential energy decreases when an object's height increases.
D. Objects always have more kinetic energy than potential energy.
Answer:
D
Explanation:
Because kinetic energy do have more than potential energy: kinetic energy is when a object is moving. Potential energy is when something is at rest and has no movement what so ever
Answer:
B. only kinetic energy increases when the velocity of an object increases.
Explanation:
got it right on the quiz, hope this helps!! :)
True or False. When energy changes form, some energy is lost to heat.
Group of answer choices
False
True
False
Explantion: Energy is neither generated nor lost and can only be transferred from one form to another. But all energy is not transformed from one form to another. Some of the energy is radiated in the form of heat.
Answer:
Explanation:
True. It’s possible when energy changes form, some energy is lost to heat.
Adhesion is when forces of the molecules are more strongly drawn to each other than the molecules in other substances true or false
Answer:
False
Explanation:
that is cohesion. adhesion is force between dissimilar molecules of a body
An astronaut is at rest in space while holding an asteroid. She pushes off the asteroid that has
more mass than she does. Which object will receive the greater impulse during the
separation?
A) the astronaut
B) the asteroid
C) they will both have equal but opposite impulses
D) they each will have zero impulse
True or false. The center of gravity and center of mass of an object need to be in the same spot.
Answer: this is true
Answer:
it is actually false, the center of gravity is; the unique point where the weighted relative position of the distributed mass sums to zero, thus the center of mass doesn't have to be in the same spot as the center of gravity
Explanation:
Also i took the test and got it right.
When the units are smaller,
we need (more / less) of them.
Answer:
more..................
Answer:
If you are referring units to the metric system, I think the answer would be less.
(I'm not completely sure)
Explanation:
I say this because for example, if you have a prescription for 5,000 mg of medicine, and upon getting it filled, the dosage than decimeters (dm), so you expect there to be more than one dm in a km. (Since you are going from a larger unit to a smaller unit, you multiply). Meters is larger than centimeters, so you expect your answer to be less than 7,225.
Hope this helps and makes sense! :D
An independent variable is ______________________and is plotted on the ______ axis
A dependent variable is ________________________ and is plotted on the ______ axis.
Answer:
The independent variable is plotted on the abscissa (also called the x-axis or horizontal axis), while the dependent variable is plotted on the ordinate (also called the y-axis or vertical axis). The dependent variable is the one whose value changes as a result of changes in the independent variable.
Explanation:
2. How have human activities and natural processes influenced the gradual or sudden change in global temperature? (You need a minimum of 5 complete sentences.)
Answer:
Human activities and natural processes have influenced the change in the global temperature by the following processes
1) Green house gas such as carbon dioxide, methane, ozone, nitrous oxide and fluorinated gases produced by the combustion of fossil fuels the use of industrial chemicals, the production of coal, and natural gas
2) Deforestation which reduces the natural process of conversion of carbon dioxide to oxygen, thereby, increasing the greenhouse gases in the atmosphere
3) The accumulation of the greenhouse gases in the atmosphere results in the trapping of heat in the atmosphere, causing the atmospheric temperature to rise
4) Changes in the amount of energy produced by the Sun can result in an increase or decrease in the atmospheric temperature
5) Volcanic activity that occurs at a sufficiently large scale can produce sulfur dioxide that blocks the rays of the Sun from reaching the Earth, resulting in a change of atmospheric temperature.
Explanation:
Answer:
Green house gas such as carbon dioxide, methane, ozone, nitrous oxide and fluorinated gases produced by the combustion of fossil fuels the use of industrial chemicals, the production of coal, and natural gas
Explanation:
Which of these is a chemical property of a substance?
a. color
b. melting point
c. reactivity
d. density
what is good givernance
Answer:
measuring
Explanation:
In international development, good governance is a way of measuring how public institutions conduct public affairs and manage public resources in a preferred way. Governance is "the process of decision-making and the process by which decisions are implemented"
Explanation:
way of measuring how public institutions conduct public affairs and manage public resources in a preferred way.
Which of following best defines muscles?
A. long flexible tendons that connect bones
B. tough strong tissues that provide energy to perform physical activities
C. thick fibrous cartilage that act when sent electrical signals
D. smooth long fibers that are controlled by the skeletal system
It's that time of month!!!
Answer:
B
Explanation:
Trust me
The best explanation of the muscles from the given list of statements would be tough strong tissues that provide energy to perform physical activities, therefore the correct answer is option B .
What is exercise?Exercise is an activity that includes the physical movements of the body and results in fitness, wellness , and healthiness of the person to protect and lower the risks of getting diseases. It allows the person to maintain a healthy weight .
As given in the problem statement we have to find out the best explanation for the muscles from the given list of statements ,
The greatest explanation for muscles from the selection of phrases provided would be that they are tough , powerful tissues that provide us the energy to engage in physical activity , hence choice B is the correct response .
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Oven mitts reduce which type of thermal energy transfer when you take a hot
pan out of an oven?
A. Conduction
B. Translation
C. Convection
D. Radiation
Answer:
A) Conduction
Explanation:
The mitt keeps the heat from reaching your hand through conduction
Answer: A.conduction
Explanation: i got it right on my test!
A car accelerates from rest to 37.3 m/s
in 7 sec. What is the acceleration?
Answer:
poopgshshsh
Explanation:
cacawusususu
The weight of a box having a mass of 100 kg is blank N
Answer:980 N
Explanation: