Answer:
We do not have the information of the pendulum, so i will answer in a general way.
First, as you know, the total energy can be written as:
E = U + K
Where:
U = potential energy
K = kinetic energy.
Now, by the conservation of energy, we know that E does not change.
This means that if U increases an amount x, then K must decrease by the same amount.
Now, at the maximum height of the pendulum, the velocity is zero, this means that in this point the kinetic energy is 0j.
E = 0 + U
E = U.
Another thing that you may know about pendulums is that, if the initial displacement is by an angle θ, then the angle between the string and the vertical can never be more than θ.
And we know that:
U = m*g*h
in this case, we can write h, the maximum height, as:
h = L*(1 - cos(θ))
Where:
L is the length of the string, g is the gravitational acceleration and m is the mass of the pendulum.
Then the total energy of the pendulum is:
E = m*g*L*(1 - cos(θ))
And we had that:
E = K + U = m*g*L*(1 - cos(θ))
Then, if in a given point we have U = 50j, the kinetic energy must be:
K + 50j = m*g*L*(1 - cos(θ))
K = m*g*L*(1 - cos(θ)) - 50j
what is 1/2 / 1/4. Please help am getting two answers.idk the correct one.
Answer:
2
hope this helps :)
What if there's an asteroid with more mass coming towards earth
what is the first step to CPR
Answer:
call for help and check if the person has not passed out (check their pulse.)
Explanation:
If a football player has a weight of 600 N on earth, what would his weight be on the moon?
Answer:
99n
Explanation:
Suppose you are climbing a hill whose shape is given by the equation z = 2000 − 0.005x2 − 0.01y2, where x, y, and z are measured in meters, and you are standing at a point with coordinates (60, 40, 1966). The positive x-axis points east and the positive y-axis points north. (a) If you walk due south, will you start to ascend or descend? ascend descend Correct: Your answer is correct. At what rate? Correct: Your answer is correct. vertical meters per horizontal meter (b) If you walk northwest, will you start to ascend or descend? ascend descend Correct: Your answer is correct. At what rate? (Round your answer to two decimal places.) Correct: Your answer is correct. vertical meters per horizontal meter (c) In which direction is the slope largest? What is the rate of ascent in that direction? vertical meters per horizontal meter At what angle above the horizontal does the path in that direction begin? (Round your answer to two decimal places.)
Answer:
(a) Ascend at 0.8 vertical meter/meter
(b) Descend at -0.2·√2 vertical meter/meter
(c) In the (-0.6, -0.8) direction. The path begins at 45° to the horizontal
Explanation:
The given equation of the shape of the hill is z = 2000 - 0.005·x² - 0.01·y²
The current location = (60, 40, 1966)
The direction of the positive x-axis = east
The direction of the positive y-axis = north
(a) Walking due south = Reducing the y-value 40
From the equation, the elevation varies inversely with the motion towards the north
Therefore, walking south increases the elevation, and we ascend
The rate is given by the partial derivative at in the -j direction, which is 0.02
The rate is therefore 40 × 0.02 = 0.8
(b)The unit vector in the northwest direction u = 1/√2·(-1, 1)
∴ The rate = (-0.01(60), -0.02(40))·u = (-0.6, -0.8)·1/√2·(-1, 1) = -0.2·√2
Therefore we descend
(c) The slope is largest in the grad of the function at the point (60, 40) which is given as follows;
d(2000 - 0.005·x² - 0.01·y² )/dx, d(2000 - 0.005·x² - 0.01·y² )/dy = (-0.6, -0.8)
Therefore, the direction is tan⁻¹(-0.8/-0.6) ≈ S 36.87° W
The slope =(√((-0.4)² + (-0.8)²) = 1
Therefore, the angle is 45° to the horizontal.
Which of the following describes the mass of an object precisely ? *
2.34 kg
2.345 kg
2 kg
2.3 kg
Answer:
2.345 would be the most precious because you have more numbers to work with and exact numbers
Two particles are separated by 0.38 m and have charges of -6.25 x 10-°C
and 2.91 x 10-°C. Use Coulomb's law to predict the force between the
particles if the distance is cut in half. The equation for Coulomb's law is
Fe = kqu92, and the constant, k, equals 9.00 x 109 Nm2/C2
A. 1.13 x 10-6N
B. 4.53 x 10-6N
C. -1.13 x 10-6N
D. -4.53 x 10-6N
Answer:
-4.53 X 10-6N
Explanation:
apex
HEY can anyone tell me the Atomic Mass of Helium and also what ever the number u get pls round it!!
Answer:
Hey!
Your answer is that the ATOMIC MASS of Helium is 4 u ROUNDED to 2 decimal places!
Explanation:
The precise amount is 4.002602 u.
I HOPE THIS HELPED YOU! :DArrange the following events in the mantle convection process. Use numbers 1-5.
a. Lithospheric plates move in the asthenosphere due to rising and sinking of
materials.
b. The decomposition of radioactive elements causes heat in the interior part of
the Earth
c. Heat slowly rises to the mantle and creates convection current.
d. Heat moves to the core.
e. The process repeats as cycle.
Answer:
1) Lithospheric plates move in the asthenosphere due to rising and sinking of materials is 1.
2) The decomposition of radioactive elements causes heat in the interior part of the Earth
3) Heat slowly rises to the mantle and creates convection current.
4). Heat moves to the core
5) The process repeats as cycle.
Explanation:
Mantle convection is the gradual slow creeping of movement of the Earth's mantle which is as a result of convection current which transfer heat from the interior to the surface of the Earth .
The process of mantle convection start with
1. Lithospheric plates move in the asthenosphere due to rising and sinking of materials is and thus form the two component of the mantle.
2) The decomposition of radioactive elements causes heat in the interior part of the Earth. This is as a result of accretion which is associated to sea flooding
3) Heat slowly rises to the mantle and creates convection current.
4). Heat moves to the core, cools down by conduction and convection of heat.
5) The process repeats as cycle.
The proper and correct arrangement of events in the mantle convection process are:
1. The decomposition of radioactive elements causes heat in the interior part of the Earth.
2. Heat moves to the core
3. Heat slowly rises to the mantle and creates convection current.
4. Lithospheric plates move in the asthenosphere due to rising and sinking of materials.
5. The process repeats as a cycle.
Convection is considered to be one of the most efficient ways through which heat is transported from the interior of planet Earth to the surface.
Mantle convection can be defined as the very slow transfer of heat due to the movement of Earth's solid silicate material within the mantle.
Basically, the slow creeping of the mantle causes a transfer of heat from the white-hot core to the brittle lithosphere during mantle convection.
Furthermore, the heating of the mantle takes place from below (the core) and it rises upward in hotter regions while it sinks down in colder regions.
The proper and correct arrangement of events in the mantle convection process are:
1. Heat is caused in the interior part of the Earth due to the decomposition or decay of radioactive elements.
2. Heat moves to the core.
3. Heat slowly rises from the Earth's core to the mantle and creates convection current in the asthenosphere, which is the plastic layer of the mantle.
4. Lithospheric plates move in the asthenosphere due to rising and sinking of materials.
5. The process is then repeated as a cycle.
Read more: https://brainly.com/question/19545005
What is the momentum of a 200 kg football player running west at a speed of 8m/s
Answer:
The answer is 1600 kgm/sExplanation:
The momentum of an object can be found by using the formula
momentum = mass × velocityFrom the question
mass = 200 kg
velocity / speed = 8m/s
We have
momentum = 200 × 8
We have the final answer as
1600 kgm/sHope this helps you
How much force does a 35 kg child have that is running through the house at an acceleration of 20 m/s^2?
Answer:
The answer is 700 NExplanation:
The force acting on an object given it's mass and acceleration can be found by using the formula
force = mass × accelerationFrom the question
mass = 35 kg
acceleration = 20 m/s²
We have
force = 35 × 20
We have the final answer as
700 NHope this helps you
A constant net force acts on an object. Describe the motion of the object
a) constant acceleration
B) constant speed
C) constant velocity
D) increasing acceleration
Answer:
C)constant velocity
Explanation:
it is probably corrected
How fast would an inline skater have been traveling if he had covered 400 m in 10
seconds?
Answer:
The answer is 40 m/sExplanation:
The speed or velocity of an object given it's distance and time taken can be found by using the formula
[tex]v = \frac{d}{t} \\ [/tex]
From the question we have
[tex]v = \frac{400}{10} \\ [/tex]
We have the final answer as
40 m/sHope this helps you
Which of the following statements is not true about genes?
A. Genes consist of hormones that regulate bodily functions.
B. Genes are DNA segments that are carried in each chromosome.
C. Genes serve as the biochemical units of heredity.
D. Genes operate in pairs and influence one's physical traits.
Answer:
A.) Genes consist of hormones that regulate bodily functions.
Explanation:
The statements (A), (B) and (C) are correct to explain the functions of Genes in a human body.
The given problem is based on the concept and fundamentals of Genes. Genes in a human body acts as a set of instruction that determine the likings of the organism, its appearance, and its behavior in its environment.
As per the above definition, Genes are the hormones that is responsible for the regulation of functions of body.Genes are made of a substance called deoxyribonucleic acid, or DNA. Moreover, it is a short section of DNA that contains instructions that tell the cells to make molecules called proteins.It is responsible for the transmission of hereditary from one biological unit to another, therefore it is known to serve as Biochemical unit for Heredity.Thus, we can conclude that the statements (A), (B) and (C) are correct to explain the functions of Genes in a human body.
Learn more about the Genes here:
https://brainly.com/question/8832859
What acceleration will all objects experience during their flights through the air (on Earth)?
Answer:
d
Explanation:
Answer:
9.8 m/s/s
Explanation:
As such, all objects free fall at the same rate regardless of their mass. Because the 9.8 N/kg gravitational field at Earth's surface causes a 9.8 m/s/s acceleration of any object placed there, we often call this ratio the acceleration of gravity
An airplane flies with a constant speed
of 720 km/h. How far can it travel in
3 hours
Answer:
2160 km/h
Explanation:
720 times 3 gives you the answer
An object accelerates from rest to a velocity of 34 m/s
over a distance of 70 m. What was its acceleration?
Answer:
6.8m/s²
Explanation:
Given parameters:
Initial velocity = 0m/s
Final velocity = 34m/s
Distance = 70m
Unknown:
To solve this problem we apply one of the motion equations;
V² = U² + 2aS
where V is the final velocity
U is the initial velocity
a is the acceleration
S is the distance covered
Input the parameters and solve;
34² = 0² + 2 x a x 70
34² = 140a
a = 6.8m/s²
Which other subatomic particle has the same mass as a neutron
Answer:
.................... protons :)
Answer:
protons
The two subatomic particles that have the same mass are protons and neutrons.
A constant net force acts on an object. Describe the motion of the object
a) constant acceleration
B) constant speed
C) constant velocity
D) increasing acceleration
Answer:
The answer is A if it was right give it the brainiest
Which of the following describes the way heat is transferred in a geyser?
PLS HELP!!
Which correctly identifies a type of heat transfer shown in the figure above?
C = radiation
B = conduction
A = convection
A = radiation
Answer:
conduction
Explanation:
Metals are good conductors of heat .In the pic the thermal energy is conducted by the cooker and the food gets cooked.Option B is correctAnswer:
[tex] \sf B = conduction[/tex]
What is the current in the 30.0 o resistor?
2.00A
32.0A
4.00A
30.0A
Answer:
4.00 A
Explanation:
kenneth warmed up a 100- ml sample of air in and expandable container. he displayed the resluts in the following graph. the resluts formed a straight line, so he extended the line the full length of the graph
Answer:
300,000
Explanation:
Stored energy is_____ Energy.
A) Nuclear
B) Potential
C) Kinetic
D) Light
Water being held back by a dam possesses which type of energy?
A) Kinetic energy
B)Potential Energy
C) Nuclear energy
D) Chemical energy
a phosphorus atom needs to gain ---electrons to achieve a full octet
Answer:
Three (3).
Explanation:
The octet rule is a rule in chemistry that states that, chemical elements would either gain or loss electrons in their outermost shell in order to attain a stable electronic configuration i.e having eight (8) valence electrons in their outermost shell such as chemical elements found in group 8 (2-8-8) known as noble gas.
A phosphorus atom needs to gain three (3) electrons to achieve a full octet because the atomic number of phosphorus is 15 and as such it has the electronic configuration of 2-8-5 and needs three electron in order to become a stable element.
How are representative democracies and direct democracies similar?
In both, elected officials meet to make laws.
The power lies with the people in both types of government.
Both types of government work well in countries with large populations.
In both, citizens often represent themselves in voting on government decisions.
BRAINLYIST IS THE REWARD
Answer:
The answer is Both types of government work well in countries with large populations.
Explanation:
Answer:
its d
Explanation:
At what point is the KINETIC ENERGY at its highest?
Answer:
An object has the MOST kinetic energy when it's movement is the GREATEST.
Explanation:
Which value is NOT equivalent to the others?
Multiple choice question.
A)
5 × 1011 nm
B)
0.5 km
C)
500 m
D)
5000 cm
Answer:
A) 5 × 1011nm
I think It's A
13. How much dimmer than the sun is Eridani B2
Answer: Eridani B2 appears only [tex]6.73[/tex]×[tex]10^{-13}[/tex] as bright as the sun.
A sock with a mass of 0.03 kg is stuck to the inside of a clothes dryer spins
around the drum once every 0.5 sec at a distance of 0.5 m from the center of
the drum. What is the linear speed if the sock could fly out?*
Answer:
15.71 m/s
Explanation:
We are given;
Time; t = 0.2 s
Radius; r = 0.5 m
The circumference will give us the distance covered.
Formula for circumference is 2πr
Thus; Distance = 2πr = 2 × π × 0.5 = π
Linear speed = distance/time = π/0.2 = 15.71 m/s