Answer:
Newton is derived unit
Explanation:
Because it depends upon three fundamental units i.e kg,m and s
Hope it helps you.
A baby carriage is rolling down a hill at 18 m/s. If the carriage has 90J of kinetic energy, what is the mass of the carriage? a. 5 kg b. 0.56 kg c. 10 kg d. 100 kg
Answer:
why did the parents let go of their child-
Explanation:
A 5 kg, because 90 / 18 is 5
The mass of the carriage is 10 kg
The formular for kinetic energy
K.E= 1/2mv²
Kinetic energy= 90 joules
velocity= 18 m/s
mass= ?
90= 1/2 × mass × 18
90= 0.5 × 18 × mass
90= 9 × mass
mass= 90/9
= 10 kg
Hence the mass of the carriage is 10 kg
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The Indian plate and the Eurasian plate collided to create the Himalayan mountains. Which
statement below best describes what would happen to the plates if more force was added to
the convection currents. ?
Answer:
Greater acceleration of the plates towards each other
Explanation:
If more force is added to the convection currents, there would be a greater acceleration of the plates towards each other.
A lithospheric plate is driven by underlying asthenosphere which is ductile and readily flows. The plate lies on the asthenosphere.
The rate of movement of the asthenosphere determines the rate at which the plate above is moving.
The greater the convection below, the faster the plate moves.
Which of the following is a chemical change?
A. Water vapor in the air turns to liquid water in the form of rain
B. The oxygen in the air forms ozone in presence of UV rays
C. Dust and soot particles being suspended in the air
D. Sulphur dioxide being released in the air
Answer:
B
Explanation:
Question 1
What are the parts of Earth's mantle?
-Inner core, asthenosphere, lithosphere
-Lithosphere, asthenosphere, mesosphere
-Crust, lithosphere, asthenosphere
-Mesosphere, asthenosphere, troposphere
Question 2
Two students below described a type of Earth's outermost layer:
Student A: 5–12 kilometers deep
Student B: Makes up the sea floor
Which type of outermost layer did the students describe?
-They both described the oceanic type.
-They both described the continental type.
-Student A described the oceanic type and Student B described the continental type.
-Student A described the continental type and Student B described the oceanic type.
Question 3
If Earth was like a hardboiled egg, which part of Earth would the egg shell represent and why?
-Crust, as its depth is up to 3,000 kilometers
-Mantle, as its depth is up to 3,000 kilometers
-Mantle, as its depth is less than 100 kilometers
-Crust, as its depth is less than 100 kilometers
Question 4
What forces the inner core of Earth to remain solid?
-Lack of water
-Low temperature
-Low density
-High pressure
Answer:
1.- the lithosphere, asthenosphere, and mesosphere.
2.- They both described the oceanic type.
3.- Crust, as its depth is less than 100 kilometers
4.- High pressure
☺️
How much time is required for a 20 Coulombs charge to flow through a point if the current is 2 amperes? help plzzzzz
The time required for a 20 coulombs charge to flow through a point if the current is 2 amperes will be 10 seconds.
What is electric current?Electric current is defined as the ratio of the charge flow in a given time interval. It is denoted by I. It has the unit is ampere.
The given data in the problem is;
t is the time is required
q is the charge = 20 Coulombs
I is the current is= 2 amperes
The formulas for the elctric current are given as;
[tex]\rm I = \frac{q}{t} \\\\\ \rm t = \frac{q}{I} \\\\ \rm t = \frac{20}{2} \\\\ t=10 \ sec[/tex]
Hence the time required for a 20 coulombs charge to flow through a point if the current is 2 amperes will be 10 seconds.
To learn more about the electric current refer to the link;
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The time required for a 20 coulombs charge to flow through a point if the current is 2 amperes will be 10 seconds.
What is electric current?Electric current is defined as the ratio of the charge flow in a given time interval. It is denoted by I. It has the unit is ampere.
The given data in the problem is;
t is the time is required
q is the charge = 20 Coulombs
I is the current is= 2 amperes
The formulas for the electric current are given as;
[tex]I=\dfrac{q}{t}[/tex]
[tex]t=\dfrac{q}{I}[/tex]
[tex]t=\dfrac{20}{2}[/tex]
[tex]t=10 sec[/tex]
Hence the time required for a 20 coulombs charge to flow through a point if the current is 2 amperes will be 10 seconds.
To learn more about the electric current refer to the link;
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Momentum is a product of mass and....?
Answer:
Momentum is a product of mass and velocity.
Explanation:
Hope this helps you
Crown me as brainliest:)
Water waves with a frequency of 4.5 Hz and a wavelength of 2.0m are traveling across a small harbor that is 200 m wide. How long does it take the waves to travel from one side of the harbor to the over?
Answer:
22.2 seconds
Explanation:
recall that for a regular wave
v = fλ
where v = wave velocity (we need to find this to solve the next part)
f = frequency = 4.5 Hz
λ = wavelength = 2.0m
Substituting these into the equation above,
v = fλ
v = (4.5)(2)
v = 9.0m/s
Also recall that Distance travelled = velocity x time
in our case, we found velocity above (= 9.0 m/s) and the distance across the harbor is given as 200m, hence
Distance travelled = velocity x time
200 = 9.0 x time
time = 200/9.0
time = 22.2 seconds
In case of a long jump, the span of jump depends upon:
a
Maximum height attained
b Angle of projection
с
Both maximum height attained and angle of
projection
d None of the above
Answer:Both maximum height attained and angle of projection
Explanation:
The weight of an object is determined by it X
. ?
Mass
Gravity
Height
Both A&B
Answer:
gb tbbyeyb
Explanation:
calculate the value of net force acting on given body?5N acting towards right & 15N force acting towards left on the brick.(draw fbd)
Answer:
The net force acting on the body is 10N directed to the left.
Explanation:
Magnitude of force to the right = 5N
Magnitude of force to the left = 15N
Net force acting on the object and in what direction;
Solution:
It is the vector sum of all forces acting on a body. This net force is the single force that will replace the forces acting on a body;
For the problem;
Net force = Force to the left + Force to the right
Let us take left to be negative and right to be positive;
Force to the left = -15N
Net force = -15N + 5N = -10N
The net force acting on the body is 10N directed to the left.
what is Newton's second law of motion?
What is Newton's second law of motion?
Answer:-Newton's second law of motion states that the rate of change of momentum is directly proportional to the applied force and the direction of change of momentum takes place towards direction of applied force.
[tex] \bullet [/tex]What do you come to know from Newton's second law of motion?1. Concept of Momentum.
2. Measurement of Force.
_____________________________________
[tex] \bf Hope \: it \: helps \: you [/tex] .Answer:
Newton's second law of motion can be formally stated as follows: The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object
Hopefully u will satisfy with my answer of ur question..!!Mark on brainleast please..!!what will you always find in ALL atoms?
Answer:
All atoms have a dense central core called the atomic nucleus. Forming the nucleus are two kinds of particles: protons, which have a positive electrical charge, and neutrons, which have no charge. All atoms have at least one proton in their core, and the number of protons determines which kind of element an atom is.
Explanation:
What are the stages of sleep apnea, what is worse
Answer:
Moderate apnea. Moderate apnea is defined as 15 to 29 episodes of apnea or reduced airflow to the lungs every hour. Symptoms may include drowsiness or falling asleep during activities that require some attention, such as attending a concert or a meeting. These symptoms may cause moderate problems with work or social functioning. Severe apnea.
Explanation:
calculate the value of net force acting on given body?5N acting towards right & 15N force acting towards left on the brick.(draw fbd)
please help!!!!!
Answer:
-10N to the left.
Explanation:
The net force on a body is the single force that represent all the forces acting on a body.
Let the right direction be positive
Let the left direction be negative
Force acting to the right = 5N
Force acting to the left = -15N
Net force = 5N + (-15N) = -10N
The net force will be directed -10N to the left.
pls help me i’m begging u
Answer:
C
Explanation:
Balanced forces cancel each other out so they do not change the object's motion
How do I learn the basics of physics
an archer shoots an arrow into a target using a bow. If the "action" force is the force of the bowstring against the arrow, what is the "reaction force?
a. the arrow's push against the bowstring
b. weight of the arrow
c. the archer's hand gripping the bowstring
d. the bowstring's force on the bow
What does a horizontal line on a position time graph indicate
A horizontal line means the object is. not changing its position it is not moving, it is at rest.
Answer:
horizontal lines on any chart is where the y axis values are equal.
If a block is in equilibrium, the magnitude of the block’s acceleration is
Answer:
zero.
from newton's first law of motion
What is the equivalent resistance of the circuit?
Answer:
5.5Ω
Explanation:
The circuit diagram shown is a parallel arrangement. To solve this problem for the equivalent resistance,
R1 = 10Ω
R2 = 20Ω
R3 = 30Ω
For circuits in parallel, equivalent resistance is ;
[tex]\frac{1}{Rt}[/tex] = [tex]\frac{1}{R1} + \frac{1}{R2} + \frac{1}{R3}[/tex]
Now insert the parameters and solve;
[tex]\frac{1}{Rt}[/tex] = [tex]\frac{1}{10} + \frac{1}{20} + \frac{1}{30}[/tex]
[tex]\frac{1}{Rt}[/tex] = [tex]\frac{6 + 3 + 2}{60}[/tex]
[tex]\frac{1}{Rt}[/tex] = [tex]\frac{11}{60}[/tex]
Rt = 5.5Ω
What is the value of the initial horizontal velocity?
Initial Velocity is the velocity at time interval t = 0 and it is represented by u. It is the velocity at which the motion starts.
I hope this helps...Good day :)A bus initially moving at 20 m/s with an acceleration of -4m/s2 for 5
seconds. What is the displacement AND final velocity?
Answer:
50m; 0m/s.
Explanation:
Given the following data;
Initial velocity = 20m/s
Acceleration, a = - 4m/s²
Time, t = 5secs
To find the displacement, we would use the second equation of motion;
[tex] S = ut + \frac {1}{2}at^{2}[/tex]
Substituting into the equation, we have;
[tex] S = 20*5 + \frac {1}{2}*(-4)*5^{2}[/tex]
[tex] S = 100 + (-2)*25[/tex]
[tex] S = 100 - 50[/tex]
Displacement, S = 50m
Next, to find the final velocity, we would use the third equation of motion;
[tex] V^{2} = U^{2} + 2aS [/tex]
Where;
V represents the final velocity measured in meter per seconds. U represents the initial velocity measured in meter per seconds. a represents acceleration measured in meters per seconds square.Substituting into the equation, we have;
[tex] V^{2} = U^{2} + 2aS [/tex]
[tex] V^{2} = 20^{2} + 2(-4)*50 [/tex]
[tex] V^{2} = 400 - 400[/tex]
[tex] V^{2} = 0[/tex]
Final velocity, V = 0m/s
Therefore, the displacement of the bus is 50m and its final velocity is 0m/s.
Is a ball a wheel and axle if so how do you calculate the Mechanical Advantage of the ball? If not what kind of simple machine is a ball?
In a classic experiment, a ball (Ball 1) is dropped from a specific height. At the same
time, an identical ball (Ball 2) is launched horizontally from the same height. Which
ball hits the ground first?
A.) The dropped ball (Ball 1) because its path is shorter,
B.) The launched ball(Ball 2) because the ball's velocity is greater.
C.) The two balls will reach the ground at the same time because the horizontal and vertical planes of motion are independent of each other and they were also released from the same height.
D.) It is not possible to determine which ball hits the ground first because of the complex nature of motion
Answer: C
Explanation:
Gravity is acting equally on both objects causing the same vertical velocity because they are the same objects. The object launched horizontally off a cliff has a longer range because of the greater initial horizontal velocity
Hope this helps you, sweetie!
If you ever need help ask people here on Brainly or contact me by my mail at
tutorbydemand05 at g****.com
Have a marvelous day! {:0)
The answer to the question related to the time for two balls to reach the ground is option C, the two balls will reach the ground at the same time because the horizontal and vertical planes of motion are independent of each other, and they are also released from the same height.
When a ball is dropped, knowing the height we could find the time with the following equation:
[tex] y_{f} = y_{i} + v_{i_{y}}t - \frac{1}{2}gt^{2} [/tex] (1)
Where:
[tex] y_{f} [/tex]: is the final height
[tex] y_{i} [/tex]: is the initial height
[tex]v_{i_{y}}[/tex]: is the initial speed of the ball in the vertical direction = 0 (it is dropped)
g: is the acceleration due to gravity
When the ball is launched horizontally from the same height, we could find the time with equation (1) since the acceleration in the horizontal direction is zero and the initial velocity in the vertical direction is also zero.
The horizontal motion is related to the equation:
[tex] x = v_{i_{x}}*t [/tex] (2)
We can notice in both cases that the ball is accelerated only by gravity.
Let's evaluate each statement
A) This statement is incorrect because the path is the same for both cases. The ball is dropped and launched from the same height.
B) This statement is also incorrect. The velocity of the dropped ball is the same as the velocity of the launched ball because the ball is accelerated only by gravity.
C) This statement is correct. We can see that we would get the same time in equation (1) since [tex]v_{i_{y}}[/tex], [tex]y_{f}[/tex], and [tex]y_{i}[/tex] is the same for the dropped ball and the launched ball.
D) This statement is incorrect. The nature of motion is related to a freefall motion in both cases.
Therefore, the answer is option C.
Read more here:
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I hope it helps you!
A construction crew must use a lever to lift a boulder. The mechanical advantage of the lever is 6 and the lever applies a force of 1600 N to the rock. What is the force that the construction crew must apply to the lever?
Answer:
The force the construction crew must apply to the lever is 266.67 N
Explanation:
Mechanical advantage is the measure of the ratio of output force to input force in a system. Hence, mechanical advantage (MA) is given by the formula
[tex]MA = \frac{F_{o} }{F_{i} }[/tex]
Where MA is the mechanical advantage
[tex]F_{o}[/tex] is the output force
and [tex]F_{i}[/tex] is the input force
From the question, the mechanical advantage of the lever is 6
That is, MA = 6
and the lever applies a force of 1600 N to the rock
That is, Output force, [tex]F_{o}[/tex] = 1600 N
To determine the force the construction crew must apply to the lever, that is the input force, [tex]F_{i}[/tex]
From
[tex]MA = \frac{F_{o} }{F_{i} }[/tex]
We can write that
[tex]F_{i} = \frac{F_{o} }{MA}[/tex]
Then,
[tex]F_{i} = \frac{1600N}{6}[/tex]
[tex]F_{i} = 266.67 N[/tex]
Hence, the force the construction crew must apply to the lever is 266.67 N.
The force that the construction crew must apply is 266.67 N.
A machine is a device in which the effort applied at one end is used to overcome a load at another end. The mechanical advantage is the ratio of load to effort of a machine.
We have the following information;
Mechanical advantage (MA) = 6
Load = 1600 N
Effort = ?
Substituting values;
6 = 1600N/Effort
Effort = 1600N/6
Effort = 266.67 N
Learn more: https://brainly.com/question/8592296
A chemical change can be represented by ____________ changing into _____________ in a ________________.
A. Products, reactants, chemical reaction
B. Chemical reaction, reactants, products.
C. Chemical reaction, products, reactants
D. Reactants, products, chemical reaction
Answer:
I don't know but I explain some of it as best as I can
Explanation:
Substances that start a chemical reaction are called reactants. Substances that are produced in the reaction are called products. Reactants and products can be elements or compounds. Bonds break in the reactants and new bonds form in the products.
Which of the following statements does NOT describe force?
A.Force causes objects to change direction.
B.Force causes objects to start moving.
C.Force causes objects to stop moving.
D.Force causes objects at rest to remain stationary.
Answer: D
Explanation: Force can do everything else.
Answer:
D. Force causes objects at rest to remain stationary.
Explanation:
When a toy car is moving down a ramp, what forces are acting on it (gravity, tension, spring, friction, air, normal, applied)?
The free-body diagram below shows the forces acting on a bicycle as the
rider pedals to the right. The vectors are not drawn to scale. The bicycle has a
weight of 700 N and a pedaling force of 325 N. As it moves, it encounters 100
N of air resistance. What is the net force on the bicycle in the x-direction?
Answer:
225 N to the right
Explanation:
got it wrong on the quiz and revealed the correct answer
A skier rides horizontally off of a 200 meter high cliff. If he lands 25 meters away from
the base of the cliff, how fast was he skiing as he went off the edge?
Answer:3.91
Explanation:
