Answer:
acceleration of the car is 3 m\s^2
Explanation:
from rest means the initial velocity (vi) is zero
time = 5s
final velocity (vf) = 15m\s
a = vf - vi \ t
a = (15-0) \ 5
a= 3 m\s^2
which means that the car is speeding up 3 meters every second
Answer:
3m/s
Simple
Explanation:
Solution,
U=0
Velocity=15m/s
Time=5 sec
Now,
Acceleration=V-U÷T
=15m/s-0÷5
=15m/s÷5
=3m/s
Hence, the acceleratiob of the car is 3m/s.
Help me please it due today at 11:59 pleasss
Answer:
see below
Explanation:
1. density = mass / volume
2. kg/mL, g/cm³
3. volume = mass / density
4. mass = density x volume
5.
d = m / v
d = 32.9 g / 45.78 mL
d = 0.72 g/mL
6.
vol = m / d
vol = 0.62 g / 120g/cm³
vol = 0.00517 cm³
7.
m = v * d
m = 2.07 g/mL * 60.9 mL
m = 126.063 g
The world record for the fastest train on Earth was set by abullet train from Tokyo to Osaka in Japan. Without passengers,it can travel at a speed of 300 km/hr. How many centimeters
per second can it travel?
cm/sec. *round to nearest whole number *
Answer:
8333
Explanation:
300km/hr = 300/60 = 5 km per min
5km/min = 5/60 = .08333333km per sec
km to cm = 100000, so
.083333 * 100000 = 8333
The train would travel at a speed of 8333.33 centimeters/second.
What is speed?The total distance covered by any object per unit of time is known as speed. It depends only on the magnitude of the moving object. The unit of speed is a meter/second. The generally considered unit for speed is a meter per second.
As given in the problem the world record for the fastest train on Earth was set by a bullet train from Tokyo to Osaka in Japan. Without passengers, it can travel at a speed of 300 kilometers/hour,
1 kilometer = 1000 meters
1 meter = 100 centimeters
300 kilometers = 300×100000 centimeters
the speed of the fastest train = 300×100000 centimeters /3600 seconds
= 8333.33 centimeters/second
Thus, the speed of the fastest train would be 8333.33 centimeters/second
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If the weight of displaced liquid and the weight of an object are the same, the object will:
(A) sink
(B) float
(C) float, but partially submerged
Answer:
c
Explanation:
I think but if I'm wrong I'm sorry
Answer:
i think its float
Explanation:
Urgent
Please write the complete answer
Multiply field strength (N/kg) by mass (kg) to get weight (N)
At the start, the car is carrying
4.7 kg * (9.8 N/kg) = 46.06 N
of fuel.
At the end, it is carrying
3.0 kg * (9.8 N/kg) = 29.4 N.
Assuming the car remains completely intact, its weight was reduced by
46.06 N - 29.4 N = 16.66 N.
hey can anyone pls help me out in dis !
All of the above.
For example:
A glass plate is a solid. Particles vibrate in a solid and are closely packed. together.
It doesn’t change shape if you touch it.
It doesn’t change volume like it’s water.
Answer:
D: all of the above
Explanation:
particles in a solid do vibrate but they're tightly packed and move around fixed location
A speed racer travels 25.3 m/s in 9.6 s. How far did it travel?
Speed = 25.3 m/s
Time taken = 9.6 s
To be calculated:-Calculate the distance covered by a body.
Formula applied:-Speed = Distance/Time
Solution:-We know,
Speed = Distance/Time
[tex] \bf\implies \: 25.3 = \frac{Distance}{9.6} [/tex]
[tex] \bf \implies \: Distance = 25.3 \times 9.6[/tex]
[tex] \bf\implies \: Distance = 242.88 \: m \: (approx)[/tex]
CAN YOU THE 3 QUESTIONS ILL PUT U AS BRAINLEST!!!!
Answer: 1. 5 1/6 m/s 2. Traveling Left 3. 0.45
Explanation:
Please mark Brainliest!!!
A 0.5 kg yellow bouncy ball rolls to the right at a speed of 8 m/s while a 0.25 kg blue bouncy ball rolls
to the left towards it with a speed of 4 m/s. After the collision, the blue bouncy ball rolls to the right
with a speed of 12 m/s. How fast is the yellow ball rolling and in what direction?
Explanation:
Let yellow ball be m1 = 0.5kg with u1 = 8 m/s and blue ball be m2 = 0.25 kg with u2 = - 4 m /s respectively.
After collision, blue ball travels 12 m/s.
Using conservation of Linear Momentum :
m1u1 + m2u2 = m1v1 + m2v2
0.5* 8 + 0.25 * - 4 = 0.5 * v1 + 0.25 * 12
v1 = 0 m/sec i.e. Yellow ball comes to rest.
2. Elements in the same group have similar properties because they have O the same number of protons O the same number of valence electrons O the same number of energy levels with electrons O the same total number of electrons
2. Convert 750 m/s to km/hr.
Answer:
2700
Explanation:
1m/s=3.6km/hr
1) Describe how the atoms of a solid differ from the atoms of a liquid.
Answer:
liquid are close together with no regular arrangement. solid are tightly packed, usually in a regular pattern.
The atoms of solids and liquids are different from each other in many ways as discussed below.
We have a solid and a liquid.
We have to describe how the atoms of a solid differ from the atoms of a liquid.
What is Atom?An Atom smallest unit into which matter can be divided without the release of electrically charged particles.
According to the question, the following differences exists between the atoms of solids and liquids -
In solids the atoms are tightly packed while in liquid they are loosely packed.In solids the density of atoms within a specific volume is very high while in liquid it can be either high or low.In solids, atoms are not free to move and they can only oscillate about their mean position while in liquid the atoms are free to move.Hence, it can be seen that the atoms of solids and liquids are quite different from each other.
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Which accident will be more damaging, collision between two trucks
moving with a speed 50 km/hr or collision between two cars moving with a speed of 50 km/hr? Explain.
Answer:
collision between truck
Explanation:
Answer. Collision between trucks, because more is the mass, more is the inertia and therefore more is the momentum. Mass of the trucks is more than that of cars so collision of trucks will cause more damage.
A ray of light strikes a plane mirror at an angle of incidence of 60°, is reflected from the mirror and then strikes a second plane mirror placed so that the angle beftween the mirrors is 45°. The angle of reflection at the second mirror, in degrees, is
A 15
B 25
C 45
D 65
E 75
plz help me guys ASAP!
Answer:
60 - 45 = A. 15
Explanation:
Subtracted because the plane mirror at an angle is incidence of 60°, so then in order to find the value it would be 60-45 and not adding it or dividing and multiplying to find the value thus the answer is 15.
60 - 45 = A. 15. Subtracted because the plane mirror at an angle is incidence of 60°, so then in order to find the value it would be 60-45 and not adding it or dividing and multiplying to find the value thus the answer is 15.
What is Plane mirror?A flat or highly polished surface called a plane mirror reflects light or waves to create an image. It is a polished, smooth surface that creates a virtual representation of the actual object.
A plane mirror is a surface on which an image can only be produced by at least two light beams. The intersection of these two beams can occur inside the mirror or appear to occur somewhere behind the mirror.
The image that follows illustrates how an object appears when viewed via a plane mirror.
Therefore, 60 - 45 = A. 15. Subtracted because the plane mirror at an angle is incidence of 60°, so then in order to find the value it would be 60-45 and not adding it or dividing and multiplying to find the value thus the answer is 15.
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If a fish experiences an a of 9.8m/s2 over a period of 1.84s, what was the 4v?
Answer:
It’s 18.0 m/s
Explanation:
Use acceleration formula then plug in 9.8 and 1.84s
Two forces are applied to a car in an effort to accel-
erate it,
a. What is the resultant of these two forces?
b. If the car has a mass of 3200 kg, what accelera-
tion does it have? Disregard friction
Answer:
R=2F
Explanation:
As the forces are in same direction so the resultant force will be:
R=F+F
R=2F
Rhea kicks a soccer ball at 13 km/h to Sean. After kicking the ball, the speed of the soccer ball from Rhea’s reference frame is 13 km/h. The speed of the soccer ball from Sean’s reference frame is 22 km/h. Which conclusion is best supported by the information? A. Sean is standing still, and Rhea is running toward Sean while kicking the ball. B. Rhea is standing still after kicking the ball, and Sean is running away from Rhea. C. Both soccer players are standing still after the ball is kicked. D. Both soccer players are running while the ball is in motion.
Answer: Sean is standing still, and Rhea is running toward Sean while kicking the ball
Explanation: Your welcome :)
Answer: A:Sean is standing still and Rhea is running toward Sean while kicking the ball
Explanation:
edgen2020
What is the kinetic energy of a 150 kg object that is moving at a speed of 5
m/s?
Answer:
Kinetic Energy=1/2×m×v^2,Where m=mass,v=velocity. So, kinetic energy of the object=1/2×150×15^2 = 16875 kg m^2 s^-2 .
Explanation:
math lol
A city bus travels six blocks east and eight blocks north east wok is 100 m long is a bus travels as distance and 15 minutes what is the average speed on the bus
Answer:
the average speed on the bus = 1.55 m/s
Explanation:
From the information we are being provided with ;
a city block travels 6 blocks due east
and 8 blocks due north
the length of the individual blocks = 100m
As such their respective distance will be
distance (d) traveled due east direction by bus = 6 × 100 = 600 m
distance (d) traveled towards the north direction by bus = 8 × 100 = 800 m
The total distance covered = (600+ 800)m
= 1400 m
However, it requires 15 minutes to travel this distance by bus.
Thus,
the average speed = distance/ time
the average speed on the bus = 1400 m / (15 × 60) s
the average speed on the bus = 1400 m / 900 s
the average speed on the bus = 1.55 m/s
an athlete runs around a 400m race track four times it takes him 400s to complete his run
Answer: its taking him 100s to run around the track once
Explanation:
why is unit of force called derived unit
Answer:
because these units are derived from combinations of two or more of the seven base units
What is a core sample ????
Answer:
Core samples are small portions of a formation taken from an existing well and used for geologic analysis. The sample is analyzed to determine porosity, permeability, fluid content, geologic age, and probable productivity of oil from the site. ... Core samples reveal the physical and chemical nature of the rock.
how long a boy will take to run round a square field of side ,35 if he run at the rate of 9km/hr
Answer: it will take 15 minutes
Answer:
It will take the boy 136 hours 11 minutes.
Explanation:
35 × 35 = 1225km is the area of the square.
Now find how long it will take the boy:
1225 ÷ 9 = 136.11
Which is 136 hours 11 minutes.
write 2 examples of Base physical quantities and their standard unit
Answer:
length centimeters or meters
time seconds
why do you think scientists put their results in data tables and graphs?
Answer:Since most of the data scientist collect is quantitative, data tables and charts are usually used to organize the information • Graphs are created from data tables • They allow the investigator to get a visual image of the observations, which simplifies interpretation and drawing
Have a nice day (^-^) ;)
The figure shows a horizontal pipe with a circular cross section whose diameter varies. The cross-sectional area at X is 3.0×10−4m2 and at Y is 0.60×10−4m2. Water of density 1000kg/m3 fills the pipe and flows through it at a constant rate of 2.4×10−4m3/s. The difference in pressure between X and Y is most nearly 750 Pa 750 Pa A 1600 Pa 1600 Pa B 7700 Pa 7700 Pa C 8320 Pa 8320 Pa D
By Bernoulli's Principle :
[tex]P_x+\dfrac{\rho v_x^2}{2}+\rho gz_x=P_y+\dfrac{\rho v_y^2}{2}+\rho gz_y[/tex]
Since , pipe is horizontal so every point is at same height .
So , [tex]z_x=z_y[/tex] .
The equation will reduced to :
[tex]P_x+\dfrac{\rho v_x^2}{2}=P_y+\dfrac{\rho v_y^2}{2}[/tex] ..... 1 )
Also flow rate will be constant :
[tex]Q=A_xv_x=A_yv_y[/tex]
[tex]v_x=\dfrac{Q}{A_x}\\\\v_x=\dfrac{2.4\times 10^{-4}}{3\times 10^{-4}}\ m/s\\\\v_x=0.8\ m/s[/tex]
[tex]v_y=\dfrac{Q}{A_y}\\\\v_y=\dfrac{2.4\times 10^{-4}}{0.6\times 10^{-4}}\ m/s\\\\v_x=4\ m/s[/tex]
Now ,
[tex]P_x-P_y=\dfrac{\rho v_y^2}{2}-\dfrac{\rho v_x^2}{2}\\\\P_x-P_y=\rho[\dfrac{ v_y^2}{2}-\dfrac{v_x^2}{2}]\\\\P_x-P_y=1000\times [\dfrac{ 4^2}{2}-\dfrac{0.8^2}{2}]\\\\P_x-P_y=7680\ Pa[/tex]
Difference in pressure between X and Y is most near to 7700 Pa.
Hence, this is the required solution.
An object has a mass of 17 kg and a speed of 1.28 m/s. What is the object's
kinetic energy?
Your answer
Answer: 13.9264J
Explanation: the formula for kinetic energy is ½ mv² so, we need to add our figures to the formula: ½ (17×1.28²) = 13.9264 J.
Physical Science is the study of
Answer:
Physical science is the study of the inorganic world. That is, it does not study living things. (Those are studied in biological, or life, science.) The four main branches of physical science are astronomy, physics, chemistry, and the Earth sciences, which include meteorology and geology.
Explanation:
A moving object is in equilibrium. Which best describes the motion of the object if no forces change?
O It will change directions.
O It will slow down and stop.
O It will maintain its state of motion.
O It will speed up and then slow down.
Answer:
It will maintain its state of motion
Explanation:
The object would maintain its state of motion.
What does it mean when an object is in equilibrium?If the size and direction of the forces acting on an object are exactly balanced, then there is no net force acting on the object and the object is said to be in equilibrium.
What does equilibrium mean in physics?Equilibrium, in physics, the condition of a system when neither its state of motion nor its internal energy state tends to change with time.
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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:
what do you mean by levels of professions
Answer:
your answer is.
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