Ava runs track and field and is a long-distance runner. She has a big race coming up and needs to eat food that will provide her with enough energy to last throughout the race. What food would be best for her to prepare for her race?
A. salad
B. milk
C. apple
D. pasta
Answer:
A. salad
Explanation:
Are carbon compounds rigid and strong
What can be found in every skeletal muscle?
A.
nerves, bones, cartilage, and connective tissue
B.
tendons, cartilage, nerves, and blood vessels
C.
muscle fibers, nerves, connective tissue, and blood vessels
D.
tendons, nerves, blood vessels, and bones
Please select the best answer from the choices provided.
A
B
C
D
Answer:
Its C
Thank me later
Now bye
Calculate the linear speed due to the Earth's rotation for a person at a point on its surface located at 40 degrees N latitude. The radius of the Earth is 6.40 x 10^6 m
The linear speed due to the Earth's rotation for a person at a point on its surface located at 40 degrees N latitude is approximately 465.1 m/s.
Earth rotation at 40° N: linear speed?The linear speed due to the Earth's rotation at a point on its surface can be calculated using the following formula:
v = r * ω * cos(θ)
where:
v is the linear speed
r is the radius of the Earth (\(6.40 x 10^6\) m)
ω is the angular velocity of the Earth's rotation (7.27 x \(10^-^5\) rad/s)
θ is the latitude of the point in radians (40 degrees N = 40° * π/180 = 0.6981 radians)
cos(θ) is the cosine of the latitude angle
Substituting the given values into the formula, we get:
v = (\(6.40 x 10^6 m\)) * (7.27 x \(10^-^5\) rad/s) * cos(40°)
v = 465.1 m/s
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What is the kinetic energy of a ball with a mass 2.55 kg and a velocity of
3.81 m/sec?
Answer:
18.51 JExplanation:
The kinetic energy of an object can be found by using the formula
\(k = \frac{1}{2} m {v}^{2} \\ \)
m is the mass
v is the velocity
From the question we have
\(k = \frac{1}{2} \times 2.55 \times {3.81}^{2} \\ = 1.275 \times 14.5161 \\ = 18.5080275\)
We have the final answer as
18.51 JHope this helps you
What is the velocity of an object that has been in free fall for 2.5s?
✍ We can this formula:
\(\huge {\boxed {\sf v = g \cdot t }}\)
Looking like this:\(\huge {\text {$ \sf v = 9,8 \cdot 2,5 \Longrightarrow \boxed {\boxed {\bf v= 24,5 }} $ }}\)
/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/what is a rocket engine that fires against the direction a spacecraft is headed so the spacecraft slows down?
The rocket engine that fires against the direction a spacecraft is headed so the spacecraft slows down is called Retro engine.
Spacecraft are the space automobiles that might be capable of flying out of doors of the Earth’s ecosystem in the area. They offer us a method of transportation from the Earth to the area and objects in it. There may be numerous spacecraft that are familiar to most of people e.g. Apollo 11 which took Neil Armstrong and his group to the Moon.
Crewed Spacecraft – Crewed spacecraft are the ones that carry people to the area. There have been several crewed spacecraft to the area consisting of Vostok 1 – the first crewed spacecraft in records dispatched by way of the United States of America.
Earth-Orbit Satellites – all of the satellites, which orbit across the Earth, fall in this class. The maximum tremendous satellite in orbit on the Earth is Hubble Telescope.
Space Probe – these are unmanned spacecraft that might be fitted with medical instruments for exploring objects in space e.g. planets, Moon, and solar.
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The atoms ,molecules,or compound present at the start of a chemical reaction that parcitipate in the reaction . which part of a chemical reaction does this define?
Answer:
The atoms ,molecules, or compound present at the start of a chemical reaction that parcitipate in the reaction are the reactants.
Explanation:
The chemical reaction is the way in which one substance reacts against another. So, a chemical reaction consists of the transformation of some substances into others, that is, the process of arranging atoms and bonds when chemical substances come into contact.
In a chemical reaction, the initial substances are called reactants, while the new substances obtained are called products.
So, the atoms ,molecules, or compound present at the start of a chemical reaction that parcitipate in the reaction are the reactants.
T/F : The total flux through the balloon is q/o , regardless of the size of the balloon.
The total flux through the balloon depends on the size of the balloon and the charge enclosed within it.
Flux is a measure of the electric field passing through a given area.
The total flux through a closed surface is proportional to the charge enclosed within that surface.
In the case of a balloon, the total flux through it would depend on the size of the balloon and the charge enclosed within it.
A larger balloon with more charge inside would have a greater total flux than a smaller balloon with less charge inside.
Summary: The total flux through a balloon is not fixed and depends on the size of the balloon and the charge enclosed within it. Therefore, the statement "The total flux through the balloon is q/o, regardless of the size of the balloon" is false.
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Explain why is the temperature of a hot tea higher than the temperature of iced tea?
Answer:
Because the hot tea is hot from a microwave or coffee machine when iced tea is cold from ice in the tea.
Explanation:
1. Endorphins
2. Cardiovascular
3. Endurance
4. Muscular
5. Aerobic
chemicals your brain releases when you exercise
the ability to last a long time without tiring
using your heart, lungs and blood vessels
using oxygen
using your muscles
can u help me match them
What is the magnitude of the resultant of two forces 20 Newton and 15 Newton at 90 degrees to each other
Answer:
the magnitude of the resultant of two forces is 25 N.
Explanation:
Given;
first force, F₁ = 20 N
second force, F₂ = 15 N
the angle between the two forces, θ = 90⁰
The resultant of these two forces is obtained by applying Pythagoras theorem;
R² = F₁² + F²
Where;
R is the resultant force
R² = 20² + 15²
R² = 625
R = √625
R = 25 N
Therefore, the magnitude of the resultant of two forces is 25 N.
An 8.8-m length of conducting wire is formed into a square and placed in a uniform magnetic field of strength of 1.2T. The square is then rotated continuously in three dimensions, so that the angle between the normal line to the square and magnetic field varies between 0 degrees and 90 degrees. At what angle p is there no magnetic flux through the conductor?
The angle (p) at which there is no magnetic flux through the 8.8-m length of conducting wire formed into a square and placed in a uniform magnetic field of strength 1.2T is 0 degrees.
To find the angle p at which there is no magnetic flux through the conductor, we need to use the formula for magnetic flux through a surface:
Φ = B × A × cos(θ)
where Φ is the magnetic flux, B is the magnetic field strength, A is the area of the surface, and θ is the angle between the normal line to the surface and the magnetic field.
In this case, the conducting wire is formed into a square, so its area is A = (8.8 m)² = 77.44 m². The magnetic field strength is given as B = 1.2 T.
As the square is rotated continuously in three dimensions, the angle θ varies between 0 degrees and 90 degrees. We want to find the angle p at which there is no magnetic flux, which means Φ = 0.
Substituting the values into the formula, we get:
0 = (1.2 T) × (77.44 m²) × cos(p)
Solving for p, we get:
cos(p) = 0
Since the cosine of 0 degrees is 1, and the cosine of 90 degrees is 0, we know that the angle p must be 90 degrees for there to be no magnetic flux through the conductor. At this angle, the normal line to the square is perpendicular to the magnetic field, so the magnetic flux through the surface is zero.
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if an electric circuit requires 1.0 a at 50 v, how much current will it require if the voltage is increased to 75 v? group of answer choices
The current required when voltage increase to 75v is 1.5A.
What is voltage and current?Voltage is the force exerted by the power source of an electrical circuit to move charged electrons (current) through a conducting loop, allowing them to do work such as lighting a lamp.
A stream of charged particles, such as electrons or ions, traveling through an electrical conductor or space is referred to as an electric current.
What is the relationship between current, voltage and resistance?Ohm's Law expresses the relationship between current, voltage, and resistance. This asserts that if the temperature is constant, the current flowing in a circuit is directly proportional to the applied voltage and inversely proportional to the resistance of the circuit.
Voltage = Current * Resistance
According to formula for resistive circuit,
V = I × R
50= 1×R
R = 50 ohm
So after applying 75 Volt the current will be,
I = 75/50= 1.5 Amps
The current required when voltage increase to 75v is 1.5A.
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If a spacecraft is moving at 20,000 mph (in space), it will continue to move at 20,000 mph when its engines shut off.
Which Law explains this?
Choose matching definition
Newton's first law of motions
All of these
Fruitfulness
scope
testability
Sum to you equal weight
If a spacecraft is moving at 20,000 mph (in space), it will continue to move at 20,000 mph when its engines shut off.
The law that explains this is Newton's first law of motion.
Newton's first law of motion, also known as the law of inertia, states that an object at rest will stay at rest, and an object in motion will continue in motion with the same speed and direction, unless acted upon by an external force.
In the case of the spacecraft moving at 20,000 mph, it will continue to move at that speed when its engines shut off, because there are no external forces acting upon it in the vacuum of space.
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Question 1 An atom of magnesium and two atoms of chlorine react and yield the compound of magnesium chloride. Which option represents this scenario as a chemical equation? 2Cl → → Mg + MgCl2 2Cl right arrow Mg + MgCl2 Mg + 2Cl → → MgCl2 Mg + 2Cl right arrow MgCl2 MgCl2 → → Mg + Mg + Cl MgCl2 right arrow Mg + Mg + Cl Mg → → 2Cl + MgCl2 Mg right arrow 2Cl + MgCl2 MgCl2 → → Mg + 2Cl
Answer:
Mg + 2Cl ----> MgCl2
Explanation:
In writing a chemical reaction equation, it is a rule that the number of atoms of each element on the right hand side must be equal to the number of atoms of each element on the left hand side.
If this condition is fulfilled, the reaction equation is said to be balanced.
In this case, there are two chlorine atoms and one magnesium atom on both sides of the reaction equation hence the equation is balanced.
flywheel in form of a solid cylinder of mass 60.00 kg and radius 1.80 m is rotated to an angular velocity 26.0 rad/s. what is the energy stored in the flywheel?
The energy stored in the flywheel is approximately 32,949.6 Joules.
The energy stored in the flywheel can be calculated using the formula for rotational kinetic energy: KE = 0.5 * I * ω², where KE is the kinetic energy, I is the moment of inertia, and ω is the angular velocity.
For a solid cylinder, the moment of inertia (I) is given by the formula: I = 0.5 * M * R², where M is the mass and R is the radius.
Substituting the given values: I = 0.5 * 60 kg * (1.8 m)² = 97.2 kg m².
Now, we can find the kinetic energy: KE = 0.5 * 97.2 kg m² * (26.0 rad/s)² ≈ 32949.6 J.
So, the energy stored in the flywheel is approximately 32,949.6 Joules.
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What element does the picture represent? (Use the periodic table if you need to) *
(1 Point)
nitrogen
O chlorine
O oxygen
An ideal gas is enclosed in a piston-cylinder apparatus with the piston being freely movable. Given that LaTeX: \DeltaΔE is positive and LaTeX: \DeltaΔH is negative following a process, ____ the system absorbs heat and expands during the process. the system absorbs heat and contracts during the process. the system loses heat and expands during the process. the system loses heat and contracts during the process. the system loses heat but neither expands nor contracts during the process.
Clear question is;
An ideal gas is enclosed in a piston-cylinder apparatus with the piston being freely movable. Given that ΔE is positive and ΔH is negative following a process,
pick one
A) the system absorbs heat and expands during the process.
B) the system absorbs heat and contracts during the process.
C) the system loses heat and expands during the process.
D) the system loses heat and contracts during the process.
E) the system loses heat but neither expands nor contracts during the process.
Answer:
Option A is correct.
Explanation:
In thermodynamics, when the change in energy which is ΔE of a system is positive, it means that the system is undergoing an endothermic process. An endothermic process is simply one where heat is absorbed from the surroundings
Now, when change in enthalpy which is ΔH is negative, it means that it's an exothermic reaction. Exothermic means it releases heat to the surroundings. This means work is positive because the system does work on the surroundings. Thus it will expand.
So the correct answer is;
heat is absorbed from the surroundings and will expand during the process.
A bowling ball with a mass of 9kg is thrown down a lane with a constant speed of 3 m/s. The ball hits the 1.5kg pin, initially at rest, at the end of the lane. After the collision the pin moves with a speed of 5 m/s. How fast is the ball moving after the impact?
Answer:
M1 V1 = M1 V2 + M2 V3 conservation of momentum
V2 = (M1 V1 - M2 V3) / M1 where V2 = speed of M1 after impact
V2 = (3 * 9 - 1.5 * 5) / 9 = (27 - 7.5) / 9 = 2.17 m/s
Note: All speeds are in the same direction and have the same sign
Two examples of energy transformations are shown. At left, a floor lamp plugged into a wall electrical outlet. At right, a wood fire. The energy transformations are similar because they both involve transformations that begin with chemical energy. begin with electrical energy. result in radiant energy. result in mechanical energy.
Answer: C, result in radiant energy
Explanation:
Answer:
The answer is C; result in radiant energy.
Explanation:
Just took the test and got it right ;)
Who would like to Join A Bible Club
Here's the link For You to Sign Up If Interested
Requirements:
Be older than 10 and younger than 20
https://forms.gle/kjbkMRV9u1fLJnGu8
This is for You and For God !!!
“For the wages of sin is death, but the gift of God is eternal life in Christ Jesus our Lord” Romans 3:23
Answer:
alright
Explanation:
that's so cool I'll join
The school bus slows from 60 km/h to 40 km/h when entering the school zone.
Given that this change of speed occurred over 8 seconds, calculate the average deceleration of the bus.
To calculate the average deceleration of the bus, we can use the following formula:
Average deceleration = (Final velocity - Initial velocity) / Time takenHere, the initial velocity (v1) is 60 km/h, the final velocity (v2) is 40 km/h, and the time taken (t) is 8 seconds. To make the units consistent, we'll convert the velocities from km/h to m/s.
1 km/h = 1000 m / 3600 s = 5/18 m/sv1 = 60 km/h * (5/18) = (60 * 5) / 18 = 50/3 m/s v2 = 40 km/h * (5/18) = (40 * 5) / 18 = 100/9 m/sNow, we can plug the values into the formula:
Average deceleration = (v2 - v1) / t Average deceleration = ((100/9) - (50/3)) / 8Now, we'll find a common denominator for the fractions and simplify:
Average deceleration = ((300 - 450) / 27) / 8 = (-150 / 27) / 8Lastly, we'll divide the fraction by 8:Average deceleration = -150 / (27 * 8) = -150 / 216So, the average deceleration of the bus is approximately -150/216 m/s².
An object of mass 0. 16kg is moving forwards at a speed of 0. 50m/s. A second object of mass 0. 10kg is at rest. The first object strikes the second object. After the collision, the second object moves forwards at a speed of 0. 50m/ s. What is the speed of the first object after the collision?
An object of mass 0. 16kg is moving forwards at a speed of 0. 50m/s. A second object of mass 0. 10kg is at rest. 0.375 m/s is the speed of the first object after the collision.
Just apply momentum conservation since the net external force on the system is zero.
0.16 × 0.50 + 0.10 × 0 = 0.10 × 0.50 + 0.16 ×v
0.080 = 0.050 + 0.16v
0.16v = 0.030
v = 0.375 m/s
The initial velocity is the velocity of the item or system prior to the impact. In contrast, final velocity refers to the velocity of the item after the contact. Use the momentum equation p = m•v to compute the momentum or velocity of an item if given the other values. The answer is no for a single pair of equal mass items.
When two masses collide in a frame with their centers of mass at rest, each ball will leave with the same (or less) speed that it entered with.
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Why does a solar nebula flatten into a disk instead of a sphere, even though the gravity of a nebula pulls in all directions?
A This flattening occurs because the initial shape of the nebula is already somewhat flat.
B This flattening is a natural consequence of collisions between particles in a spinning cloud.
C. This flattening occurs because of gravitational influences of nearby stars.
D. This flattening occurs because the temperature of the solar nebula decreased as it collapsed.
Solar nebula flattening is a natural consequence of collisions between particles in a spinning cloud. therefore, option B is correct.
When a solar nebula collapses under its own gravity, it begins to spin due to the conservation of angular momentum. As the cloud spins, particles within it collide and interact. These collisions cause the cloud to flatten into a disk shape rather than remaining spherical.
Angular momentum plays a crucial role in this process. The initial slight asymmetry or irregularity in the nebula's shape leads to variations in the speeds and directions of the particles' motions. As particles collide and transfer momentum, their motion tends to align along the rotational axis of the cloud, promoting the formation of a flattened disk structure.
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Water vapor is an example of a(n)
Answer:
Water vapor is steam. An example of water vapor is the floating mist above a pot of boiling water. Water in the form of a gas; steam.
Explanation:
Which object has a weight of about 22.5 Newtons
A pic is given above
no trolling or a report is getting thrown right at u
Answer:
Rock
Explanation:
Right on edg 2021 and 2020000000:P
Compare and contrast reproduction and fertilization.
Answer:
ew so the difference is.. Pollination and Fertilization occur in plants during sexual reproduction.
the difference is Pollination occurs from anthers of stamens to stigma of the ovary and It is a physical process.
fertilizateion is It is the fusion of female and male gametes and It is a genetic and biochemical process.
Explanation:
this was so hard to write out
if the mass of the child and sled is 32 kg , what is the magnitude of the average force you need to apply to stop the sled? use the concepts of impulse and momentum
the magnitude of the average force required to stop the sled is 16 times the velocity of the sled in meters per second.
To calculate the magnitude of the average force required to stop the sled, we can use the concept of impulse and momentum. The equation that relates these two concepts is:
FΔt = mΔvwhere F is the force, Δt is the time interval during which the force is applied, m is the mass of the object, and Δv is the change in velocity.Let's assume that the sled was initially moving with a certain velocity v and that you want to bring it to a complete stop.
The final velocity of the sled will be 0 m/s. Since the mass of the child and sled is 32 kg, we can use the following equation to calculate the average force required to stop the sled:
FΔt = mΔvF Δt = (32 kg) (- v)F Δt = -32v
To determine the value of F, we need to know the time interval Δt during which the force is applied. If we assume that it takes 2 seconds to bring the sled to a stop, then:
F (2 s) = -32vF = -16v Newtons
Therefore, the magnitude of the average force required to stop the sled is 16 times the velocity of the sled in meters per second.
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explain why the meter stick center of mass must now be located at the support position
When a meter stick is placed on a support, such as a pivot or fulcrum, it will balance if the center of mass of the meter stick is directly above the support. This is because the center of mass is the point where the weight of the meter stick can be considered to be concentrated, and if this point is directly above the support, the weight will be balanced.
If the center of mass of the meter stick is not directly above the support, the meter stick will not be balanced and will tip over. This is because there will be a net torque acting on the meter stick, which is the product of the weight force and the distance between the center of mass and the support. If the torque is non-zero, the meter stick will rotate until the torque is balanced.
Therefore, to ensure that the meter stick is balanced on the support, the center of mass must be located at the support position. If the center of mass is not at the support position, the meter stick will not balance and will either tip over or rotate until it reaches a balanced position.
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