Answer:
The final velocity of the race car is 27.14 m/s
Explanation:
Given;
initial velocity of the race car, u = 18.5 m/s
acceleration of the race car, a = 2.47 m/s²
distance covered by the race car, s = 79.78 m
Apply the following kinematic equation to determine the final velocity of the race car.
v² = u² + 2as
v² = (18.5)² + 2(2.47)(79.78)
v² = 736.363
v = √736.363
v = 27.14 m/s
Therefore, the final velocity of the racecar is 27.14 m/s
What is the velocity of a rocket if it travels a distance of 2400 m in 3 s?
Answer:
v = 800 m/s
Explanation:
Given that,
Distance, d = 2400 m
Time, t = 3 s
We need to find the velocity of a rocket. Distance covered per unit time equals velocity. So,
[tex]v=\dfrac{d}{t}\\\\v=\dfrac{2400\ m}{3\ s}\\\\v=800\ m/s[/tex]
So, the velocity of the truck is 800 m/s.
How fast will a boat that normally travels 10km/h in still water be moving with respect to land if it sails directly across (perpendicularly) a stream that’s flows at 10km/h ?
Answer:i think 20km
Explanation:
1) Displacement is to velocity as ____________ is to acceleration. A) direction B) speed C) time D) velocity
Answer: C) time
Explanation:
simple question..
Is speed the same as velocity?
Answer: no
Explanation: speed = rate of change of distance; distance/time
velocity = rate of change of displacement; displacement/time
Rearrange the formula F=ma, and solve for the variable (a)
Answer:
a = F/m
Explanation:
So we have to isolate a, in order to do this we need to move m to the other side, and we do that by diving both sides by m, resulting in a = F/m
the pacific ocean has a surface area of about
Answer:
150,000,000 km 2
Explanation:
A person lifts a load of 60kg ustag a wheel and axle
Of VR 3. If the diameter of the axle is 5 cm, find the
radius of the wheel, MA and effort applied . Also find
its efficiency
Explanation:
Hope it will help you alot.
Which of the following is not accelerating? Q) A. a car coming to a stop a t a traffic light B. a sprinter starting from rest and running 100 min 9.8 s C. a racecar traveling 175 km/ hr on a straight track D Which of the following is not accelerating? Q) A. a car coming to a stop a t a traffic light B. a sprinter starting from rest and running 100 min 9.8 s C. a racecar traveling 175 km/ hr on a straight track D an airplane traveling at 500 km/hr and turning to the north
Answer
A. a car coming to a stop at a traffic light
Equivalent resistance between A and B.
A) 2.4 ohms
B)18 ohms
C) 6 ohms
D) 36 ohms
First of all see the attachment for better understanding[tex].[/tex] :D
Eq. resistance between C and D :
➝ 1/Rp = 1/6 + 1/6
➝ 1/Rp = 2/6
➝ Rp = 3Ω
Eq. resistance of upper part :
(All three are in series)
➝ Rs = 3 + 3 + 3
➝ Rs = 9Ω
Eq. resistance of lower part :
(Both are in series)
➝ Rs' = 3 + 3
➝ Rs' = 6Ω
Eq. resistance between A and B :
(Rs and Rs' are in parallel)
➝ 1/Req = 1/Rs + 1/Rs'
➝ 1/Req = 1/9 + 1/6
➝ 1/Req = (2 + 3)/18
➝ Req = 18/5
➝ Req = 3.6ΩAnswer:
Explanation:
Eq. resistance between C and D :
➝ Rp = 3Ω
Eq. resistance of upper part :
➝ Rs = 9Ω
Eq. resistance of lower part :
➝ Rs' = 6Ω
Eq. resistance between A and B :
➝ Req = 18/5
➝ Req = 3.6Ω
Which statement describes the Oort cloud?
O It is shaped like a donut.
O It contains huge icy objects.
O It is home to short-period comets.
O It is about 1,000 AU from the Sun.
The statement which best describes the Oort cloud is that it contains huge icy objects and is therefore denoted as option B.
What is a Cloud?This is referred to as the mass of water drops or ice crystals suspended in the atmosphere and are of different types such as oort, cumulus etc. It is also involved in rain formation in the ecosystem.
Oort cloud on the other hand is defined as a hypothetical, spherical distribution of icy bodies located in the far reaches of the Solar system which is therefore the reason why option B was chosen as the correct choice.
Read more about Cloud here https://brainly.com/question/508705
#SPJ1
Answer:
it’s B
Explanation: I got it right
calculate The number of neutrons present in the nucleus if an atom X with number of electron 15, and mass number 31. identify the Element..
ans=17. Chlorine
Explanation:
You subtract 15 which is the electron from 35 which is the mass number to get the neutron, and note number of electrons is same as number of protons. chlorine is the 17th element of the periodic table
what is meant by input and output work
Answer:
the x and y values
Explanation:
because on the table the x is the input and y is the output
Microwave ovens heat food through the process of A) COnduction B) Convection C) Radiation D)Stratification
Answer:
[tex]\huge\boxed{Radiation}[/tex]
Explanation:
In microwave, there are waves called "microwaves" as per the name. So, The heating of food is done with the help of waves. Radiation is "the transfer of heat through waves". That is why the process of heating food in a microwave is "Radiation".
Answer:
[tex]\huge \boxed{\mathrm{\bold{C.} \ Radiation}}[/tex]
Explanation:
Microwaves heat food through the form of waves.
The waves are electromagnetic waves that transfer heat through the process of radiation.
2. The stage choreography for a play requires an
actor to walk 5 steps forward, 9 steps left, and
2 steps backward to be standing over the trap
door. What are the components of the actor's
motion from the starting position?
O a. 7 steps left and 2 steps forward
Ob.7 steps left and 2 steps backward
O c. 9 steps left and 3 steps backward
d. 9 steps left and 3 steps forward
Answer:
D
Explanation:
Given that the actor walk 5 steps forward, 9 steps left, and 2 steps backward to be standing over the trap
door.
Let first consider the steps forward and the steps backwards
The displacement = 5 - 2 = 3
That is, 3 steps forward.
Therefore,
The components of the actor's
motion from the starting position will be:
9 steps left and 3 steps forward
D is the correct answer.
Define uniform circular motion and state an
expression for velocity of the body performing
whiform circular motion
Definition: When an object moves in a circular path with uniform speed, the motion is called uniform circular motion.
ac=rv2=ω2r
what does it mean to have a good experimental design?
Answer: Experimental design means creating a set of procedures to test a hypothesis. A good experimental design requires a strong understanding of the system you are studying. By first considering the variables and how they are related (Step 1), you can make predictions that are specific and testable (Step 2).
Explanation:
When a force is acting at axis of rotation,why torque is zero?
Explanation:
see, torque=force × perpendicular distance
...that perpendicular distance is between axis of rotation and the point where force acts... so in above's case perpendicular distance is zero... so the torque is zero!
Melody is riding her mountain bike along a trail with multiple hills. At the bottom of the second hill, she has 3200 J of kinetic energy. At the top of the third hill, when she is going the slowest, her potential energy measures 1650 J. Which statement below is true? A. The total amount of energy at the bottom of the hill cannot equal the amount at the top, because some of the energy from the environment is gained. B. The total amount of energy at the top is equal to the amount at the bottowm, but she gained some energy as she traveled due to a higher speed going down the first two hills. C. The total amount of energy at the bottom of the hill cannot be equal to the amount at the top, because some of the energy is lost.
Answer:
Eventually it reaches bottom of hill so C
Explanation:
Using the following equation, find in seconds 145m = 9 m/s x t-35m
Answer:
t = 20 s
Explanation:
145 m = 9 m/s × t – 35m
We can obtain the value of t in seconds by doing the following:
145 m = 9 m/s × t – 35m
Add 35 m to both side as shown below:
145 m + 35 m = 9 m/s × t – 35m + 35 m
180 m = 9 m/s × t
Divide both side by 9 m/s
t = 180 m / 9 m/s
t = 20 s
Therefore, the value of t is 20 seconds.
What is the area of a rectangle whose sides are 3.2 m and 8.01 m? Answer in units of m²
Answer:
25.632 m²
Explanation:
area = a*b
area = 3.2m * 8.01m
area = 25.632 m²
Explanation:
sides:3.2m,8.01marea of rectangle=l×b=3.2×8.01[tex]3.2 \times 8.01 = 25.632[/tex]
area=25.632m²Which atom is involved in giving your heart energy to beat?
carbon
gold
oxygen
Iron
when 20 grams of water is heated from 10 c to 15 c, the required energy in joule is
Answer:
418.6 J
Explanation:
We know the specific heat for water is 4.186 kJ/kg * °C, so this can also write as 4.186 J/g * °C, so the heat increases 5 C in this question, so you can get 4.186(J/g * C) * 5C * 20g = 418.6 J
what is the formula for solving force
Answer:
[tex]\boxed{\sf{f=m*a}}[/tex]Explanation:
The formula of force is:
[tex]\Longrightarrow: \sf{F=M*A}[/tex]
F= forceM= massA= accerlerationForce = Mass* Acceleration
I hope this helps. Let me know if you have any questions.
Your microwave will not turn on, and you speculate that a circuit breaker in the house has been tripped. In scientific terminology, the steps would be described as:
Answer:
Your microwave will not turn on, and you speculate that a circuit breaker in the house has been tripped. In scientific terminology, the steps would be described as: developing a hypothesis based on an observation.
Derive the unit of intensity???
My answer is "Watt per square meter".
A charge of 12c passes through an electroplating apparatus in 2 min, what is the average current?
Answer:
Explanation:
If I am not wrong
current = charge/time
All you have to take care of is the units should be in the same system
so
current = 12/(2*60) --------- 2 min = 2*60 sec
current = 12/120 = 0.1 amp
what is the main aim of pokhara regional international airpot project
Answer:
Explanation:
The main aim of pokhara regional international airpot project is to provide improved air transportation services to the people. It will also strengthen the country's civil aviation sector and contribute to economic and social development, as well as tourism.
hope this helps
plz mark as brainliest!!!!!!
The main aim of Pokhara regional international airport project is to improve the country's aviation services and contribute to economic and social development as well as tourism.
please help find the clockwise and anticlockwise
Answer:
clockwise is 2.5 Nm
Anticlockwise is 0.25 F Nm.
Explanation:
Moment is equal to force × distance
the image formed by a convex mirror of focal length 30 cm is a quarter of the length of the object the distance of the object from the mirror is
Answer:
The answer to the question is 90 cm i.e the object distance is 90 cm from the mirror.
CALCULATION:
As per the question, the focal length of the convex mirror f = 30 cm.
The magnification is: 1/4
We are asked to calculate the object distance [u].
As per the sign convention for reflection, the measurements taken along the direction of light is taken as positive and its reverse is taken as negative.
The transverse measurement above the principal axis is taken as positive and below the principal axis is taken as negative.
Hence, the focal length of the convex mirror f = +30 cm.
The image formed by a convex mirror is virtual and erect.
Hence, the magnification will be positive.
Hence, magnification m = +1/4=+0.25
The relation between focal length, magnification and object distance is given as -
m= f/f=u
u= m=1/m multiplyed by f
= 0.25=1/0.25 multiplyed by -(30)
= -90 cm [ans]
Here, the negative sign is due to the fact that object distance is measured opposite to the direction of light.
(sorry, brainly didn't allow me to put pictures of the calculation)
hope this helps :)
88 L + 120 dL = _____________ L
100 l
Explanation:1 dl = 0.1 l
120 dl = 120×0.1l = 12 l
88 l + 12 l = 100 l