Answer:
After 2 seconds the velocity of the object is 0 m/s.
Explanation:
The velocity at 2 seconds later can be calculated as follows:
[tex] V_{f} = V_{0} - gt [/tex]
Where:
[tex]V_{f}[/tex]: is the velocity at 2 seconds
[tex]V_{0}[/tex]: is the initial velocity = 20 m/s
g: is the gravity = 10 m/s²
t: is the time = 2 s
Hence, the final velocity is:
[tex] V_{f} = V_{0} - gt = 20 m/s - 10 m/s^{2}*2 s = 0 m/s [/tex]
This value (0 m/s) means that the object has reached the maximum height.
Therefore, after 2 seconds the velocity of the object is 0 m/s.
I hope it helps you!
name the regions in which parenchyma tissue is present
The parenchyma is widely distributed in plant body such as stem , roots, leaves, flowers and fruits. The parenchyma tissue is found in the soft parts of the plants such as cortex of roots, ground tissue in stems & mesophyll of leaves. It is also distributed in pith , medullary rays & packing tissue in xylem and phloem. They forms the bulk of the plant body they are living and possesses the power of their division. Parenchyma cells have living Protoplasm.
The main function of parenchyma is to store an assimilate food. Parenchyma serves as food storage tissue.
An airplane flying due north at 90 km/h is being blown due west. The planes total velocity is 103 km/ hr north west. What is velocity of the wind?
Answer:
50.09 km/h
Explanation:
Given that an airplane flying due north at 90 km/h is being blown due west. The planes total velocity is 103 km/ hr north west.
What is velocity of the wind ?
The wind velocity can be calculated by using pythagorean theorem.
From the question,
Resultant Velocity R = 103 km/h
Plane velocity P = 90 km/h
Wind velocity W = ?
W^2 = R^2 - P^2
Substitutes all the parameters into the formula
W^2 = 103^2 - 90^2
W^2 = 10609 - 8100
W^2 = 2509
W = sqrt ( 2509 )
W = 50.09 km/h
Therefore, the velocity of the wind is 50.09 km/h
What will be the fundamental frequency and first three overtones for a 26cm long organ at 20°C if it is open ( at 20°C, the speed of sound in air is 343m/s)
Explanation:
The frequency of an organ pipe if it is open is given by :
[tex]f=\dfrac{nv}{2l}[/tex]
v is speed of sound in air is 343 m/s at 20°C
For fundamental frequency, n = 1
[tex]f=\dfrac{1\times 343}{2\times 0.26}\\\\f=659.61\ Hz[/tex]
First overtone frequency,
[tex]f_1=2f\\\\f_1=2\times 659.61\\\\f_1=1319.22\ Hz[/tex]
Second overtone frequency,
[tex]f_2=3f\\\\f_2=3\times 659.61\\\\f_2=1978.83\ Hz[/tex]
Third overtone frequency
[tex]f_3=4f\\\\f_3=4\times 659.61\\\\f_3=2638.44\ Hz[/tex]
Hence, this is the required solution.
WHAT ARE 5 EXAMPLES of REAL science
Answer:
physics
kinematics
dynamics
fluid mechanisms
earth sciences
A spy is running across the bridge of an aircraft carrier. The spy is moving with a velocity of - 4 m/s relative to the carrier. However, the aircraft carrier is moving with a velocity of 12 m/s. There is a person standing stationary on a beach watching the event. What will be the velocity of the spy according to the person on the beach? 8 m/s 6 m/s -4 m/s -7 m/s
Answer:
The correct option is A
Explanation:
From the question we are told that
The velocity of the spy relative to the carrier is [tex]v_s = -4 \ m/s[/tex]
The velocity of the aircraft carrier is [tex]v_a = 12 \ m/s[/tex]
Generally the velocity of the spy according to the person standing stationary on the beach is mathematically represented as
[tex]v = v_s + v_a[/tex]
[tex]v = -4 + 12[/tex]
[tex]v = 8 \ m/s[/tex]
Claire lost weight thanks to the support and encouragement of her friends. They helped her stick to a healthy diet and pushed her to engage in physical exercise every day. Identify the FaceTime that helped her lose weight
Answer:
hello the options to your question is missing below are the options
culture
heredity
physical environment
social environment
answer : social environment
Explanation:
Claire ability to lose weight due to the encouragement and support of her friends shows that she was ability to achieve her goal due to her social circle ( friends ). therefore the face time that helped her lose weight is her social environment and not culture nor any other option as mentioned above.
social environments help/play a vital role in individual's life a lot as long as every human being is a social being
In system A, momentum changes at twice the rate of the momentum system B. Which statement is correct about systems A and B?(1 point)
The impulse of the collision in system A is half the impulse of the collision in system B.
The force of the collision in system A is twice the force of the collision in system B.
The force of the collision in system A is half the force of the collision in system B.
The impulse of the collision in system A is twice the impulse of the collision in system B.
Answer:
The impulse of the collision in system A is twice the impulse of the collision in system B. (Last choice)
Explanation:
I just took the quick check and got it wrong for putting what the other person put, which I should've gone with my first choice. The answer above is correct. I really hope this helps!
The correct statement about systems A and B is ; ( D ) The impulse of the collision in system A is twice the impulse of the collision in system B
Momentum is a product of the mass and velocity of particles in motion while impulse is the rate of change of the momentum of particles/objects when a force acts on the object.
The momentum of a particle is proportional to its impulse therefore as momentum in system A changes at twice the rate of change of the momentum in system B the impulse of the collision in system A is also twice the impulse of the collision in system B
Hence we can conclude that The correct statement about systems A and B is The impulse of the collision in system A is twice the impulse of the collision in system B
Learn more : https://brainly.com/question/20182620
an armadillo rolls in a straight line in the desert. the horizontal position of the armadillo in meters over time is shown.
what is the displacement of the armadillo between 0s and 24s ?
what is the distance traveled by the armadillo between 0s and 24s
Answer:
Displacement = -6m
Distance = 24m
Explanation:
From the position time graph given above, the displacement of the armadillos will base on the distance covered with direction in consideration.
Displacement = (15 - 6) - 15
Displacement = 9 - 15
Displacement = - 6m
While distance will be:
Distance = (15 - 6) + 15
Distance = 9 + 15
Distance = 24 m
Answer:
See attached (No Decimals Needed)
Explanation:
What would happen to an object that is moving towards the right at a constant speed when you put a force on it towards the left?
Answer & Explanation:
If the resultant force is zero, a moving object towards the right will stay at the same speed. If there is no resultant force then a system is said to be in equilibrium.
If the resultant force is not zero, due to a force towards left of a moving object will slow down - depending on the direction of the resultant force:
it will speed up if the resultant force is in the same direction as the object is moving
it will slow down if the resultant force is in the opposite direction
Please note that the object could also change direction, for example if the resultant force acts at an angle.
Whenever you push an object across a frictional surface, it starts out taking a lot of force to push to get the object moving. However, once the object starts moving, it is much easier to keep it moving. What does this tell you about one of the main differences between static and kinetic friction?
A) Static friction only depends on the surface material, while kinetic friction only depends on the motion
B) Kinetic and Static friction are the exact same thing
C) Static friction and kinetic friction are combined in one at all times, but static friction is just not seen during the motion
D) Static Friction is much stronger than kinetic friction, so it takes more force to get an object moving than it does to keep it moving
Answer:
The correct answer is D. Static friction is much stronger than kinetic friction, so it takes more force to get an object moving than it does to keep it moving.
Explanation:
We can eliminate choice A if we know that both static friction and kinetic friction depend on what are called the coefficients of static friction and kinetic friction, respectively. These coefficients are a reflection of the nature of the surface. In other words, both static friction and kinetic friction depend on the surface material (choice A is incorrect).
Choice B is incorrect because static friction applies to still (static) object whereas kinetic friction applies to moving objects (that have kinetic energy).
Choice C is also incorrect.
Choice D is correct as described in the given information. It takes much more force to start an object from rest than to keep it moving. Think about things in your everyday life - it takes a push to get a toy car moving along the ground, but you do not need to consistently push the car with the same force to keep it moving. This reflects that static friction is much stronger than kinetic friction, which is also described by the relationship between their coefficients (the coefficient of static friction is generally greater than that of kinetic friction).
Hope this helps!
The weight of an object is the product of its mass, mmm, and the acceleration of gravity, ggg (where g=9.8 m/s2g=9.8 m/s2). If an object’s mass is m=10. kgm=10. kg, what is its weight? Express the weight with the appropriate units.
Answer:
98 N
Explanation:
Given that
Mass m = 10 kg
Acceleration due to gravity g = 9.8m/s^2
Where the weight of an object is the product of its mass, and the acceleration of gravity. That is,
W = mg
Substitute all the parameters into the formula
W = 10 × 9.8
W = 98 N
Therefore, the weight of the object is 98 Newton
a toy boat travels 0.2km in 1 minute and 30 seconds calculate the average speed of the toy give your answer to 3 significant figures
Answer:
0.00222km/s
Explanation:
[tex]Distance = 0.2km\\Time = 1\:minute \:30\:seconds = 90\:seconds\\\\Average \:speed =?\\\\Average \:speed = \frac{0.2}{90} \\A.V = 0.002222\\A.V =0.00222[/tex]
What is the name of the force that is acting upwards on the bag of bananas?
ANSWER- I GUESS IT SHOULD BE GRAVITATIONAL FORCE.......
Answer:
GRAVITATIONAL FORCE
In 1935, a French destroyer, La Terrible, attained one of the fastest speeds for any standard warship. Suppose it took 3.0 min at a constant acceleration of 0.50 m/s2 for the ship to reach its top speed after starting from rest. Calculate the ship's final speed.
Answer:
Explanation:
From newton's equation of motion of uniform acceleration
v = u + at
where v is final velocity , u is initial velocity , a is acceleration and time is t .
putting the values
v = 0 + .5 x 3 x 60 ( time in second = 3 x 60 s )
= 90 m /s
So , final velocity is 90 m /s .
30 POINTS
A graph of velocity versus time for an object shows a straight line with positive slope. What does that indicate about the acceleration of the object?
- the acceleration is changing
- the acceleration is zero
- the acceleration is constant and positive
Answer:
B
Explanation:
Answer:
c. the acceleration is constant and positive
Explanation:
a car travels 480 km in 12 hr. what is its velocity
Answer:
Explanation:
velocity=s/t
given distance is 480 km we have to convert it into meter because the unit of distance is meter
1 km=1000 m
480 km=480000 m =4.8*10^5
1 hour= 3600 s
12 hour =43200 s
now velocity=s/t
v=4.8*10^5/43200
v=11.11 m/s
Answer:
The correct answer is 40
Explanation:
Divide 480 and 12 that = 40v
Hoped I helped
Of the following, who is the first female to earn a doctoral degree in psychology in the United States? A. Mary Whiton Calkins B. Leta Stetter Hollingworth C. Margaret Floy Washburn D. Francis C. Sumner Please select the best answer from the choices provided
Answer:
c
Explanation:
i got it rigth on the quiz
Which of the following is the largest mass? A 5 kilograms b 1 000 milligrams C 800 centigrams D 100 grams
Answer:
A) 5 kilograms is the largest and the heaviest out of all.
Select all the correct locations on the image. Select the volume units that are greater than one liter.
Answer:
N/A
Explanation:
No Image provided
Answer:
there is no picture to help us help you get the answer so please put up a picture.
Explanation:
Is velocity more like distance or displacement? Why?
Answer:
Displacement
Explanation:
Velocity is more like displacement because
Both are vector quantities. Which means Magnitude+direction.Both have an arrow above their signs which indicates they are vectors.
Hope this helps ;) ❤❤❤
what do I need To do to get a moving object to stop moving ?
Answer:
Force.
Explanation:
SImple as that. think of Newtons Laws.
can anyone tell me the ans of this question also please
Answer:
Hey there!
Stopwatch X recorded 40 seconds, and stopwatch Y recorded 50 seconds.
Stopwatch Y recorded 10 seconds longer than stopwatch X.
Hope this helps :)
Answer:
Explanation:
Stopwatch X recorded 40 seconds, and stopwatch Y recorded 50 seconds.
Stopwatch Y recorded 10 seconds longer than stopwatch X.
A particle moves with a velocity 1 v 5j 3j 6k ms under influence of a contact force F 10i 10j 20k N. THe instantaneous power applied to the particle is
Answer:
P = 200 W
Explanation:
The expression for the power is
P = W / t
the job
W = F d
we substitute
P = F d / t
P = F. v
We apply this equation to our case where the velocity is
v = (5 i + 3j + 6k) m / s
and the force is
F = (10i + 10j +20 k) N
we substitute in the power equation, remember that the scalar product of the unit vectors is
i.i = j.j = k.k = 1 and the other products are zero
P = 10 5 + 10 3 + 20 6
P = 200 W
what is classic physics
Answer:
Classical physics refers to theories of physics that predate modern, more complete, or more widely applicable theories. If a currently accepted theory is considered to be modern, and its introduction represented a major paradigm shift, then the previous theories, or new theories based on the older paradigm, will often be referred to as belonging to the realm of "classical physics".
As such, the definition of a classical theory depends on context. Classical physical concepts are often used when modern theories are unnecessarily complex for a particular situation. Most usually classical physics refers to pre-1900 physics, while modern physics refers to post-1900 physics which incorporates elements of quantum mechanics and relativity.
The atmospheric pressure above a swimming pool changes from 837 to 842 mm of mercury. The bottom of the pool is a rectangle (10 m ⨯ 25 m). By how much does the force on the bottom of the pool increase?
Answer:
Change in force = 1.66 × 10⁵ N
Explanation:
Given:
Initial pressure = 837 mmHg
Final pressure = 842 mmHg
Rectangle (10 m ⨯ 25 m)
Find:
Change in force
Computation:
Change in force = (Change in pressure)(Area)(133 pa / 1 mmHg)
Change in force = (842 - 837)(10 m ⨯ 25 m)(133 pa / 1 mmHg)
Change in force = (166,250)
Change in force = 1.66 × 10⁵ N
What represents an Exothermic Reaction?
Answer: An exothermic reaction is a chemical reaction in which less energy is needed to break bonds in the reactants than is released when new bonds form in the products. During an exothermic reaction, energy is constantly given off, often in the form of heat.
Explanation: An exothermic reaction is a chemical reaction in which less energy is needed to break bonds in the reactants than is released when new bonds form in the products. During an exothermic reaction, energy is constantly given off, often in the form of heat.
Hope this helps^^
QUESTION 1
67.2 kilometers = how many decameters
Answer: the answer should be 6,720 decameters.
Answer:
67.2 kilometers =6720 decamaters
How did scientists determine the age of our universe?
Answer:
Astronomers estimate the age of the universe in two ways: 1) by looking for the oldest stars; and 2) by measuring the rate of expansion of the universe and extrapolating back to the Big Bang; just as crime detectives can trace the origin of a bullet from the holes in a wall.
Explanation:
What is the vertical acceleration of a paper airplane that is launched horizontally with an initial velocity of 2.3 m/s?
Answer:
The vertical acceleration is -9.81 m/s^2
Explanation:
When a body is projected, the body experiences an acceleration in the vertical axis that is proportional to the acceleration due to gravity of the earth, which is equal to 9.81 m/s^2. In this case, the acceleration acts to stop the vertical motion of the paper plane, and hence is a deceleration, which explains the negative vertical acceleration.
Answer:
A
Explanation:
How much force does a soccer goalie
experience when stopping a ball with the
mass of 0.2 kg that accelerates at the rate
of 10 meters per second^2?
Answer:
2 N
Explanation:
From the question, it's given that
Mass m = 0.2 kg
Acceleration a = 10 m/s^2
The force a soccer goalie experience when stopping a ball will be equal to the force at which the ball is being kicked. This is
F = ma
Substitute all the parameters into the formula
F = 0.2 × 10
F = 2 Newton.