Answer:
I would say at least 3 seconds
Explanation:
This may not be 100% accurate this is my opinion this could help give you an idea also let me explain. If the acorn fell 6 meters off the ground at 1.5 meters in my opinion it should go by 2 meters for every 1.5 meter in this order 1.5, 3, 4.5 and 6!
what is the force constant of spring which is streched
a.2mm by a force of 4N
b.4cm by a mass of 200g
c.2cm by a mass of 1kg
Explanation:
a. F=kx
4=k (2×10^-3)
k= 2000 N/m
b. mg=kx
0.2 ×10 = k (4×10^-2)
2/(4×10^-2) =k
k=50 N/m
c. mg=kx
1×10 = k (2×10^-2)
½ × 10² =k
k=50N/m
A wheelchair access ramp has an angle of elevation 38°. If the ramp reaches to the top of a 35 inch high porch, how long is the ramp?
56.9 inches 57.3 inches 56.85 inches 56.6 inches
None of these are correct.
Answer:
56.85 in
Explanation:
Which of the following describes the correct order of energy conversions necessary to form electricity from solar panels?
Solar Heat Kinetic → Electric
Solar- Kinetic Heat → Electric
Solar 1 Heat → Electric
O Solar ->Electric
Answer:
hydrochlorine +12÷B to the power of 4 -× y reapeated zminus 2 to the power of 9
If a runner has a power output of 150 W over 10.0 s, then how much work does she do?15 J1,000 J1,500 J15,000 J
We have the next formula
\(P=\frac{W}{t}\)where P is power, W is work, and t is time
we substitute the values
\(150=\frac{W}{10}\)then we isolate the work
\(W=150\cdot10=1500J\)the answer is 1,500 J
An inclined plane reduces the amount of force needed to move an object by a.increasing the distance the object moves.
b.transferring more of the force to the object
c.reversing the direction the object is moved.y
By (a) extending the object's travel distance, an inclined plane decreases the force required to move the object.
What is force?At this point, describing a force as a push or a pull is perfectly acceptable. There is no such thing as a force that an object "has in it" or "contains." A force is applied to one thing by another. The idea of a force encompasses both living and non-living things. A force has the ability to alter or increase the velocity of a massed object. A simple way to express force is with a push or a pull.. The fact that a force has both a magnitude and a direction makes it a vector quantity.
How many types of force are there?Contact forces and remote action There are two distinct kind of forces. Your consistent use of force is obvious. Push and pull are basically forces. When you push or pull against an object, you apply force to it.
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A coffee maker has a power rating of 1.4 kW. How much energy will this coffee maker transfer every second?
Answer:
The power rating of the coffee maker is 1.4 kW, which means that it uses 1.4 kilowatts of power when it is in operation. To find out how much energy it will transfer every second, we can use the formula:
Energy transferred = Power × Time
Since we want to know the energy transferred every second, we can set the time to 1 second. Therefore:
Energy transferred per second = Power × 1 second
Energy transferred per second = 1.4 kW × 1 second
We can simplify this by converting the unit of power from kilowatts to watts:
Energy transferred per second = 1,400 watts × 1 second
Energy transferred per second = 1,400 joules
Therefore, the coffee maker will transfer 1,400 joules of energy every second.
Air passes over the top of an airplane wing at 170 m/s, and over the bottom at 130 m/s. What is the difference in pressure between the top and bottom of the wing?
[? ] Pa
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The pressure on top of the wing is 7200 Pa lower than the pressure on the bottom of the wing.
How to calculate pressure difference?The pressure differential between the top and bottom of the wing may be computed using Bernoulli's equation, which states that a fluid's total pressure is the sum of its static and dynamic pressures.
Assuming the air density is constant, the dynamic pressure can be calculated as:
dynamic pressure = 1/2 × density × velocity²
where density = density of air and velocity = speed of the air.
Static pressure is pressure of air at rest.
According to Bernoulli's equation, the total pressure is constant along a streamline. Therefore:
static pressure + dynamic pressure on top = static pressure + dynamic pressure on bottom
Since the density of air is the same on top and bottom of the wing, cancel from the equation.
static pressure on top + 1/2 × velocity on top² = static pressure on bottom + 1/2 × velocity on bottom²
Substituting the given values:
static pressure on top + 1/2 × 170² = static pressure on bottom + 1/2 × 130²
Simplifying and solving for the pressure difference:
static pressure on top - static pressure on bottom = 1/2 × (130² - 170²)
static pressure on top - static pressure on bottom = -7200 Pa
Therefore, the pressure on top of the wing is 7200 Pa lower than the pressure on the bottom of the wing.
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Design a hypothetical structure to be used as a 500,000 square-foot office space in Los Angeles, California. Create a drawing with labels for dimensions and describe any specifications for materials and other features that will add to its structural integrity in the event of a typical earthquake event in that area. Incorporate at least three features to help maintain the building’s structural integrity during an earthquake. Describe how each feature will improve the building’s earthquake resistance
To design an earthquake-resistant structure, we must take several aspects into account, such as materials and construction techniques.
What is an earthquake resistant structure?An earthquake-resistant structure is a term that refers to a type of structure that has the characteristic of resisting earthquakes without being destroyed or seriously affected.
Earthquake-resistant structures were developed to prevent tragedies due to the collapse of structures during earthquakes. Generally, to make a structure earthquake resistant, materials are used that resist the movements of the earth without breaking.
The most used materials to make earthquake-resistant structures are:
WoodConcreteBricksMetals (iron, steel, others)Among others.Additionally, earthquake-resistant structures include specific construction techniques that allow them to arrange materials in a certain way to resist movement.
According to the above, the best option to build a 500 square foot earthquake-resistant structure is a 25-foot-wide by 20-foot-long single-story structure to make it more resistant to earth movements.
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An___ is a pure substance that cannot be separated into any other substance
Moment of inertia describes Select one: a. How the mass of an extended object is distributed about a rotation axis. b. How a force can rotate an object. c. The average position of the mass in an extended object. d. The tendency of an object to move in a circular path. e. The tendency of an object to move in a straight line.
Answer: a. How the mass of an extended object is distributed about a rotation axis
Explanation: Moment of inertia is defined as the measure of the rotational inertia of a solid object, it is a quantity that defines the torque needed to reach a desired angular acceleration around a given rotation axis, and it depends mainly on the mass distribution of the object, so the correct answer is: "how the mass of an extended object is distributed about a rotation axis"
One strategy that has been implemented to address the drug epidemic in Philadelphia was the creation of something called
The One strategy implemented to address the drug epidemic in Philadelphia is the creation of Comprehensive User Engagement Sites (CUES). These sites aim to tackle the widespread issue of drug addiction and related energy health concerns.
The CUES are safe spaces where individuals battling addiction can energy access various harm reduction services, such as clean syringes, medical support, and overdose prevention. These sites provide connections to addiction treatment programs and mental health services, helping people on their path to recovery. By offering safe and supervised spaces, CUES work to reduce public drug use, discarded syringes, and other related issues in the community. CUES also serve as educational hubs, raising awareness and providing information about the dangers of drug addiction and available resources for support. Lastly, these sites foster community engagement and collaboration, uniting various stakeholders in the fight against the drug epidemic. In summary, Comprehensive User Engagement Sites play a significant role in addressing the drug epidemic in Philadelphia. They provide harm reduction services, treatment programs, and community support, all while promoting a safer and healthier environment for the city's residents.
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part A. Use the horizontal ruler to measure the horizontal distance between two crests. What is this distance? ____ This is the wavelength of the wave.
part B. What is the distance between the two troughs?
Answer:
part a)100 cm
Explanation:
i just did that as a lab
a particle moves uniformly around the circumference of a circle whose radius is 8.0 cm with a period of p/20 s. the angular velocity w of the particle is
The angular velocity (ω) of the particle moving uniformly around the circumference of a circle with a radius of 8.0 cm and a period of π/20 s is 40 rad/s.
The angular velocity (ω) of a particle moving uniformly around the circumference of a circle can be calculated using the formula:
ω = 2π / T
Where:
ω is the angular velocity,
T is the period of the motion.
Given that the period (T) is π/20 s, we can substitute this value into the formula:
ω = 2π / (π/20)
ω = 2π * (20/π)
Cancelling out π:
ω = 2 * 20
ω = 40
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Two blocks are accelerated across a horizontal frictionless surfaceas shown. Frictional forces keep the two blocks from slidingrelative to each other, and the two move with the sameacceleration. If F = 1.2 N and M = 1.0 kg, whatis the horizontal component (frictional force) of the force of thelarge block on the small block?
The horizontal component is 0.72 N to the right.
How is force and friction related ?The amount of static friction is inversely proportional to the amount of normal force and the degree of roughness between the sliding surfaces. The friction coefficient is calculated by dividing the frictional force's magnitude by the force's normal force.
The applied force must be greater than the friction force since the net force is to the right (in the direction of the applied force). Understanding net force as the vector sum of all the forces can help you calculate the friction force.
Given , F = 1.2 N and mass = 1 kg
we will you F - цN = ma ------- 1
and equate it with the equation ma = mg + N
After substituting the values
We will get the value of acceleration as 0.4 \(m/s^2\)
Substitute this value in equation 1
and we will get ц = 0.72 N
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a parachutist decided to jump of a plane calculate how far does he travels in 2 seconds knowing that he started at rest and accelerates downward at 10ms
Answer:
20 meters
Explanation:
Given the following parameters
Time t = 2 seconds
Acceleration a = 10m/s²
Required
Distance covered S
Since the body started from rest, u = 0m/s
Using the equation of motion S = ut + 1/2 at²
Substitute
S = 0 + 1/2(10)(2)²
S = 5 * 2²
S = 5 * 4
S - 20m
Hence he travels 20 meters
Why dont you fall through walls when you lean against them? provide a scientific explanation to explain your answer.
Answer:
That's why if you lean against the wall, you don't just fall through it. The wall pushes back on you as hard as you push on it, and you and the wall stay in place. If you throw something, you put more force behind it than just leaning on it, so it pushes back with more force.
Explanation:
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Which type of star system has the most stars?
open cluster
globular cluster
eclipsing binary
binary star system
Answer: The answer is B, Globular Cluster.
Explanation: Why did you delete my answer?? Anyways...
A Globular cluster has hundreds of thousands to millions of stars. Since a Globular Cluster is found to be the cluster with the most stars in it, therefore, the globular cluster is the answer.
The Globular cluster type of star system has the most stars.
What is a solar system?It is a system that collection of all the planets and spatial bodies revolving around the sun because of the gravitational pull of the sun.
Our Solar System is based on a heliocentric model in which the Sun is assumed to reside at the central point of the planetary system.
In other words, the Sun is at the center while the Earth and other planetary bodies revolve around it.
The star system that has the most stars is known as a globular cluster.
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The average distance between Earth and its moon is 384,000,000 meters. Express this distance in kilometers.
Answer: 384 400 km.
Explanation: The awnser is 384 400 kilometers
What is MOST likely TRUE about a person who has a healthy diet?
The MOST likely TRUE about a person who has a healthy diet is they avoid all fats and sugars (Option B).
What is a healthy diet?A healthy diet is one that includes macronutrients (i.e. proteins, carbohydrates and lipids or fats) and micronutrients (vitamins and minerals) in a suitable amount. It is well known that fats and sugars may provide calories but they do not contain nutrients and therefore should be avoided in a healthy diet.
Therefore, with this data, we can see that a healthy diet is based on the consumption of foods that contain a suitable amount of macronutrients and micronutrients.
Complete question:
What is MOST likely TRUE about a person who has a healthy diet?
OA. They eat occasional treats.
OB. They avoid all fats and sugars.
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A light-rail commuter train accelerates at a rate of 1.35 m/s2. how long (in s) does it take to reach its top speed of 80.0 km/h, starting from rest?
It takes 16.5 seconds to reach its top speed of 80.0 km/h, starting from rest.
What is Kinematics?A branch of physics called kinematics, which was evolved from classical mechanics, defines how points, bodies, and systems of bodies (groups of objects) move without taking into account the forces that propel them. The discipline of kinematics is sometimes thought of as a subfield of mathematics and is frequently referred to as the "geometry of motion." Any known values of the location, velocity, and/or acceleration of points inside the system are declared as initial conditions for a kinematics issue, together with the geometry of the system. The position, velocity, and acceleration of any unidentified system components can then be calculated using geometrical considerations.
Where \(v\) is the final velocity and \(v_{0}\) is the initial velocity, we utilize the formula \(v = v_{0}+at\) (because the train starts from rest), \(a= 1.35\frac{m}{s^{2} }\), \(v_{0} = 80.0\frac{km}{h} = 22.22\frac{m}{s}\)
Injecting these into the formula above and calculating t provides us with,
\(t= \frac{v-v_{0} }{a}\) ≈ \(16.5 s\)
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pls answer it plssss
Answer:
1.Stronger bones 2.Joint flexibility
1) newton's first law of motion says that an object continues moving in a straight line at the same speed unless acted on by an outside net force. does the moon travel in a straight line in its orbit around the earth? what does this imply about the net force acting on the moon? (i.e., is there a net force acting on the moon? why or why not?)
a) No, the moon is not moving in a straight line in its orbit around the Earth. Instead, it is moving in a curved path due to the force of gravity.
b) This implies that the net force acting on the Moon in its orbit around the Earth is zero.
According to Newton's first law of motion, an object at rest will remain at rest, and an object in motion will continue to move in a straight line at a constant speed unless acted upon by an unbalanced force.
In the case of the Moon's orbit around the Earth, the Moon is not moving in a straight line, but rather it is moving in a curved path around the Earth due to the force of gravity. However, the Moon is still moving at a constant speed in its orbit because the force of gravity acting on the Moon is balanced by the Moon's inertia, which is the tendency of the Moon to continue moving in a straight line at a constant speed.
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a 12-cm -long spring is attached to the ceiling. when a 2.2 kg mass is hung from it, the spring stretches to a length of 15 cm . what is the spring constant k ?
The spring constant is approximately 718.67 N/m.
The spring constant, k, can be calculated using Hooke's law, which states that the force applied to a spring is proportional to its displacement from equilibrium:
F = -kx
where F is the force applied to the spring, x is the displacement of the spring from its equilibrium position, and k is the spring constant.
In this case, the spring is stretched from its equilibrium position by a distance of:
x = 15 cm - 12 cm = 0.03 m
The force applied to the spring by the mass is equal to its weight:
F = mg = (2.2 kg)(9.8 m/s^2) = 21.56 N
Substituting these values into Hooke's law, we get:
21.56 N = -k(0.03 m)
Solving for k, we get:
k = -21.56 N / (0.03 m)
k ≈ 718.67 N/m
Therefore, the spring constant is approximately 718.67 N/m.
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A bike is traveling at a speed of 15 m/s. The mass of the bike is 30 kg. What is the kinetic
energy of the bike?
Answer:
3375 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
\(k = \frac{1}{2} \times 30 \times {15}^{2} \\ = 15 \times {15}^{2} \\ = {15}^{3} \: \: \: \: \: \: \: \: \: \: \)
We have the final answer as
3375 JHope this helps you
Which of the following objects had the greatest force applied to it? *
A) An object with a mass of 10 kg and an acceleration of 2.5 m/s^2
B) An object with a mass of 12 kg and an acceleration of 3.0 m/s^2
C) An object with a mass of 20 kg and an acceleration of 1.5 m/s^2
D) An object with a mass of 15 kg and an acceleration of 1.0 m/s^2
Answer:
B) is the answer
Explanation:
A) is 25 N
B) is 36N
C) is 30N
D)15N
what happens to the mechanical energy of an apple as it falls from a tree?
Answer:
When the apple falls from the tree, it has some gravitational potential energy due to its height. Now, When it starts falling, the Gravitation Potential energy will starts converting into the Kinetic Energy. When the apple is about to strikes the ground, the Gravitational Potential energy have been converted into the Kinetic Energy.
Explanation:
The potential energy will be low when its kinetic energy is high and vice versa. But the mechanical energy remains conserved.
What is mechanical energy?Mechanical energy can be explained as the sum of kinetic energy and potential energy that can be used to do work. Mechanical energy can be described as the energy of a body due to its motion or position.
The total mechanical energy of a physical system is conserved as the energy can not be created or destroyed. The mechanical energy of a physical system can only be transformed from one form to another when the forces acting work are conservative in nature.
Each force is related to potential energy form and the energy changes between different kinds of potential energy and kinetic energy but the total energy remains constant.
The mechanical energy of the apple remains conserved. As the apple falls its potential energy is converted into kinetic energy.
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xcm3 of substance A of density 0.8g/cm3 is mixed with 1000cm3 of water of density 1g/cm3.The density of the mixture is then 0.96g/cm3. Determine the value x
The value of x is 25 cm³.
Total mass = m1 + m2
m₁ = 0.8 × x =0.8x g
m₂ = 1 × 100 = 100g
Total = (0.8x + 1000)g
Total volume = (x +100)/(x+100) = 0.96
x = 4/0.16
= 25 cm³
Hence, The value of x is 25 cm³.
Mass is the amount of depend in a physical body. it's also a measure of the body's inertia, the resistance to acceleration while a internet force is applied. An object's mass additionally determines the energy of its gravitational appeal to other bodies.
Mass can be exceptional understood as the quantity of count number present in any object or frame. The entirety we see round us has mass. as an instance, a desk, a chair, your bed, a football, a pitcher, and even air has mass. That being said, all gadgets are mild or heavy because of their mass.
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Please Help!!!
20 points!!
Answer:
amikah is right.
Explanation:
it will go straight because of newton's first law being that, if a body is at rest or moving at a constant speed in a straight line, it will remain at rest or keep moving in a straight line at constant speed unless it is acted upon by a force. basically it left from the bottom of the marble track and will go straight because there isn't a force making it go curved.
Describe the movement of air masses and the weather conditions at front 3. What type of front is it?
Answer:
Cold Front. A side view of a cold front (A, top) and how it is represented on a weather map (B, bottom).
Warm Front. ...
Stationary Front. ...
Occluded Front.
Answer:
Front 3 is an occluded front. A cold air mass moves toward warmer air. The colder, heavier air pushes the warm air upward until it’s wedged between two cold air masses. Clouds can form from the lifting of the warm air.
Explanation:PLATO
Define the LAWS OF PHYSICS. State it out in full.
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Answer:
The laws of thermodynamics define a group of physical quantities, such as temperature, energy, and entropy, that characterize thermodynamic systems in thermodynamic equilibrium.