A spring with a spring constant of 34 N/m is stretched 14 m. What is the energy stored in the
spring?
Answer:
Elastic potential energy
Elastic potential energy is stored in the spring. Provided inelastic deformation has not happened, the work done is equal to the elastic potential energy stored.
Explanation:
becuse
Answer:10
Explanation:
The pull of a magnet
Mark Me brainliest
Explanation:
The pull strength is the highest possible holding power of a magnet, measured in kilograms. It is the force required to prise a magnet away from a flat steel surface when the magnet and metal have full and direct surface-to-surface contact.
I need a list of all of these please, not the names, but the accronyms
Answer:
N
O
O
B
Explanation:
D- Dont
G- Get
P- people
T- to
D- do
W- work
F- for
Y-You
How many significant figures below?
3.7 x 10^-3 L
A. 1
B. 2
C. 3
D.4
E. 0
Answer:C.3
Explanation:
1. A rug sits in a sunny place on the floor for a long time. Kiara thinks that light from the sun can
cause the rug's color to fade over time. Can light from the sun cause the rug's color to fade?
a
No. Light is not a physical thing, so it cannot change physical things like rugs.
b
No. Light can only change things by warming them up, so it cannot cause the rug's color to
fade.
Yes. The rug can take in energy from the light, causing the rug's color to fade.
d
Yes. Light from the sun can pull energy out of the rug, causing the rug's color to fade.
Answer:
yes
Explanation:
the rug can take energy from the light causing the rug's color to fade
Yes, Kiara is right because the rug can take in energy from the Sun's light, thereby causing the rug's color to fade: C. Yes. The rug can take in energy from the light, causing the rug's color to fade.
The Sun is typically characterized by nuclear reactions that usually takes place or occur at its center, which eventually result in the release of radiant (heat) energy and electromagnetic radiation into planet Earth.
Although, these radiant (heat) energy and electromagnetic radiation from the Sun are essential and very important to life on planet Earth.
However, a disadvantage of radiant (heat) energy is that when taken in by conducting materials such as rugs, it causes their color to fade (change) over time.
In conclusion, Kiara is absolutely right in her thinking because light energy (sunlight) from the Sun can cause the rug's color to become faded over time.
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PLEASE HELP!!!!
People can expect worldwide governmental agencies and regulations to "clean up" all the environmental problems.
True
False
Answer: Local governments can resolve a conflict by cooperating and spreading the costs of expensive projects. What kinds of problems cause state governments to help local governments? No economic growth or improvements are problems that cause governments to help local governments.
Answer its false
Explanation:
1. 1. A 2 kg ball starts with a velocity of 4 m/s. After a force is applied to it for 5 s, its
velocity is 12 m/s. What is the force acting on the ball?
Answer:
F = 3.2[N]
Explanation:
This problem can be solved by applying the principle of conservation of linear momentum, where the original momentum plus the momentum applied on the body, will be equal to the final momentum. This can be interpreted by means of the following equation.
[tex](m_{1}*v_{1})+(F*t)=(m_{1}*v_{2})[/tex]
where:
m₁ = mass of the ball = 2 [kg]
v₁ = initial velocity = 4 [m/s]
F = force applied [N]
t = time = 5 [s]
v₂ = final velocity = 12 [m/s]
Now replacing:
[tex](2*4)+(F*5)=(2*12)\\8+5*F=24\\5*F=24-8\\5*F=16\\\\F=3.2[N][/tex]
In the high jump, the kinetic energy of an athlete is transformed into gravitational potential energy without the aid of a pole. With what minimum speed must the athlete leave the ground in order to lift his center of mass 2.50 m and cross the bar with a speed of 0.68 m/s
Answer:
7.037 m/s
Explanation:
According to the law of energy conservation;
The total of the initial K.E = The total final K.E
This expression implies that:
[tex]\dfrac{1}{2}mv^2 = mgh + \dfrac{1}{2}mu^2[/tex]
By simplifying the above expression;
[tex]v^2 = 2gh + u^2[/tex]
where;
g = 9.81 m/s²
h = 2.50 m
u = 0.68 m/s
∴
[tex]v^2 = 2(9.81 \ m/s^2 )(2.50 \ m) + (0.68 \ m/s)^2[/tex]
[tex]v^2 = 49.5124 \ m^2/s^2[/tex]
[tex]v = \sqrt{ 49.5124 \ m^2/s^2}[/tex]
v = 7.037 m/s
Why is studying the Earth important? What advantage is the
study of the Earth to all scientists?
Answer: It is important to study Earth because it is the one place in the entire solar system where humans can live. Earth is a planet too! The advantage is Earth science or geoscience includes all fields of natural science related to planet Earth. This is a branch of science dealing with the physical and chemical .
quote explanation: I hope that was helpful and please mark me as brainliest!
can anyone help?? (or tell me some apps)
Answer:
try "socratic" it's an awesome app!
Explanation:
Please show all the steps and work. The answer is -3.9 m/s2
Given that,
Initial velocity of the airplane = 66 m/s
Distance = 560 m
Final velocity of the airplane = 0 (stops)
To find,
Acceleration of the airplane.
Solution,
Let us consider that a is the acceleration of the airplane. We can find it using third equation of motion as follows :
[tex]v^2-u^2=2as\\\\a=\dfrac{v^2-u^2}{2s}\\\\a=\dfrac{0^2-66^2}{2(560)}\\\\a=-3.9\ m/s^2[/tex]
Therefore, the acceleration of the airplane is [tex]-3.9\ m/s^2[/tex]
Thorium (Th) has an average atomic mass of 232.04 u and an atomic number of 90. In the space below, draw a square from the periodic table to represent thorium.
Answer:
Explanation:
90
Th
232.04
Box that and there is your answer.
Answer:
Explanation:
90
Th
232.04
An object if moving according to this trajectory r=(-1+2t+t2, 3.t). What is the velocity of the object? What equation is describing the movement of the object? Is the object accelerating? How do you know?
Explanation:
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Calculus 1 : How to find acceleration
Study concepts, example questions & explanations for Calculus 1
Example Questions
Calculus 1 Help » Spatial Calculus » Acceleration » How to find acceleration
Find Acceleration : Example Question #1
The position vector of an object moving in a plane is given by r(t)=3t4i + 6t2j. Find its acceleration when t=1.
Possible Answers:
3i + 2j
36i + 12j
3i + 6j
6i + 2j
36i - 12j
Correct answer: 36i + 12j
Explanation:
To find acceleration at time t, we have to differentiate the position vector twice.
Differentiating the first time gives the velocity:
v(t) = r'(t) = 12t3i + 12tj
Differentiating a second time gives the accelaration:
a(t) = r''(t) = 36t2i + 12j
Plug in t=1 to solve for the final answer:
a(1) = r''(1) = 36i + 12j
4. Two students have volunteered to explore the galaxy in a spaceship. As they travel through space, they
measure the magnitude of the gravitational force between their spaceship and the Earth. They find that the
gravitational force on the spaceship is -
A. proportional to the distance from the Earth
B. inversely proportional to the distance from the Earth
C. proportional to the square of the distance from the Earth
D. inversely proportional to the square of the distance from the Earth
Answer:B
Explanation:
They find that the gravitational force on the spaceship is inversely proportional to the distance from the Earth. The correct option is B.
What is gravitational force?The gravitational pull would be stronger if the gap were cut in half. Coulomb's law, states that the gravitational force between two items in the universe is directly proportional to the product of the masses of the objects.
And inversely proportional to the distance between them is used to calculate the gravitational force between two objects in the universe. Whether there is a body there or not, gravity is the force between two bodies.
Everybody in the cosmos is drawn to every other body by a force that is directly inversely correlated to the square of the distance between them and directly inversely correlated to the product of their masses.
Therefore, the correct option is B. inversely proportional to the distance from the Earth.
To learn more about gravitational force, refer to the link:
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#SPJ2
find mass when kinetic energy is 1.6 J and velocity is 0.2 m/s
Answer:
4kg
Explanation:
Given parameters:
Kinetic energy = 1.6J
Velocity = 0.2m/s
Unknown:
Mass of the body = ?
Solution:
The kinetic energy of a body is the energy due to the motion of the body.
It is mathematically expressed as;
Kinetic energy = [tex]\frac{1}{2}[/tex] m v²
m is the mass
v is the velocity
1.6 = [tex]\frac{1}{2}[/tex] x 0.2 x v²
1.6 = 0.1v²
v² = 16
v = 4kg
How far does a horse travel if it gallops at an average speed of 15km/hr for 2 hours?
Answer:
30km
Explanation:
Distance= speed x time
15x2=30km
A ball droped from a building. How fast is it traveling after falling 3.55s
Answer:
d = 61.75 m
Explanation:
Given that,
A ball droped from a building.
We need to find how fast is it traveling after falling 3.55 s.
As it is dropped, its initial velocity is equal to 0.
Let d is the distance it covers after falling 3.55 s.
We can use second equation of motion to find d.
[tex]d=ut+\dfrac{1}{2}at^2[/tex]
Here, u = 0 and a =g
[tex]d=\dfrac{1}{2}gt^2\\\\d=\dfrac{1}{2}\times 9.8\times (3.55)^2\\\\d=61.75\ m[/tex]
So, it will cover 61.75 m after falling 3.55 seconds.
A 50.0 kg shell is fired from a cannon on Earth's surface to a maximum height of 400 m. It then falls to a height of 100 m. What is the loss of potential energy as it falls?
Answer:
150,000 Joules.
Explanation:
Given that a 50.0 kg shell is fired from a cannon on Earth's surface to a maximum height of 400 m. It then falls to a height of 100 m. What is the loss of potential energy as it falls?
From Potential energy formula,
P.D = mgh
Assuming g = 10m/s^2
P.D = 50 × 10 × 400
P.D = 200000 Joules
Then it fell on 100m
The potential energy will be
P.D = 50 × 10 × 100
P.D = 50000 Joules
The lost Potential energy will be:
Lost P.D = 200000 - 50000
Lost P.D = 150000 Joules
Therefore, the loss of potential energy as it falls will be 150,000 Joules.
The monosaccharide found in fruits is
lactose
maltose
glucose
+
fructose
Help
Answer:
Fructose
Explanation:
Hope this helps!
What kind of mixture is the gravel at the bottom of the fish tank?
Answer:
rock
Explanation:
5 reasons why it is important to do proper maintenance and safety of kitchen tools and equipment
1. Reduced utility costs
Any piece of equipment that uses electricity, gas, or water will run much more efficiently if it is kept clean and is serviced regularly. Machinery that is properly cleaned maintained will inevitably lower your utility costs, as clean and efficient equipment requires less electricity to accomplish its purpose.
2. Fewer major failures
Unanticipated equipment breakdowns can close your business down in an instant, which will result in lost revenue and unhappy customers. To prevent major malfunctions, all equipment should be inspected and serviced routinely by a reliable and certified commercial appliance repair company.
It is also a good idea to carry extended warranties on appliances in case they need to be repaired or replaced quickly. It goes without being said that you should budget for any failures that occur out of warranty.
Routine cleaning, testing, and servicing can help prevent catastrophic and unexpected failures — failures that could have catastrophic effects on your organization or even force you to shut down temporarily.
3. Consistently good food quality and service
If your kitchen equipment is not functioning properly or is not clean, the quality and taste of the food is sure to be compromised. This could ultimately result in the loss of your customer base to your competition. There is nothing worse than serving food that all tastes the same because of dirty equipment, including cookware.
Appliances that are clean and running at maximum efficiency will also ensure that the meals the kitchen puts out will be consistently good and will get to the table quickly. Good food and speedy service could lead to more customers and increased income potential.
On the flip side, no one pays good money for food that is prepared with second-rate equipment, and if you use underperforming appliances, your customers are bound to notice the decline in food quality.
4. Longer life expectancy for equipment
It is well known throughout the industry that commercial kitchen equipment is costly to replace. You could spend several thousand dollars on just a single appliance that has broken or has simply worn out because of lack of care and following the proper guidelines to keep it clean and efficient.
By taking good care of your appliances, you can significantly extend their lifespan. Just like a car, the machinery needs to be cleaned, oiled, and serviced on a regular basis to ensure a long and useful life.
Go above and beyond to get the most out of your equipment for as long as possible – it’s well worth it in the long run!
5. Increased resale value
The hospitality industry often buys and sells used machines when upgrading or moving a business to a new location. There is a fairly big market for used equipment and plumbing fixtures that are clean and in good working condition. Start-up restaurants will often seek out good deals on well-maintained equipment to help with the initial costs associated with opening a new establishment.
You may also be able to catch a tax break by donating properly maintained machinery to a nonprofit organization or school in need of kitchen equipment.
Regardless, maintaining your equipment preserves not only its life expectancy, but also its physical value.
6. Safer work environment
Keeping your employees safe at work should be one of your highest priorities, if not the very highest. This is not limited to hygienic food storage and preparation practices. Your equipment, large and small, must be operating properly and up to the codes and standards of the local health and fire departments.
Keeping cooking appliances free of food, grease, and debris will help prevent dangerous flare-ups of hot flames that could injure your cooks.
Also, assuming you have a kitchen fire suppression system, you need to keep the system functioning to protect your employees and your building if a stove catches fire. Smoke and heat detectors, sprinkler systems, and fire extinguishers also need to be routinely inspected, tested, and maintained or replaced.
Of course, your staff should take proper safety measures while cooking, like wearing protective equipment. But caring properly for your machinery will reduce the chance of having a fire in the first place.
In conclusion, it is extremely important to have a regular maintenance and cleaning schedule for all restaurant equipment and systems. This includes ovens, ranges, ventilation systems, refrigerators, freezers, dishwashers, and many more.
Putting a schedule in place for maintenance, and sticking to it, is one of the best things you can do to keep your kitchen running efficiently and safely with the highest quality of food and service.
Importance of doing proper maintenance and safety of kitchen tools and equipment are:
1. To prevent quick damage
2. To safe costs
3. To prevent bacterias or germs
4. To Increase life span of the equipment
5. To Increase equipment resale price
1. It is important to often clean our equipment as well as kitchen tools after use as this will help to prevent them from damaging.
2. Proper maintenance and safety of kitchen tools and equipment help to safe costs as you would not have to often replace those equipment and kitchen tools on regular basis.
3. Proper maintenance and safety of kitchen tools and equipment help to prevent bacterias or germs from spreading on the foods which is why it is essential to often clean all kitchens tool after use.
4. Maintaining and servicing of equipment and kitchen tools help to Increase life span of the equipments.
5. It helps to Increase equipment resale price in a situation where you intend selling them either now or in the future.
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Nalah labels ten rats with the numbers 1 through 10. Then, she records how long it takes each rat to run through a maze. She finds it difficult to graph her data in a line graph. What change could she make to her experimental design that would allow her to plot a clearly displayed data trend in a single line graph?
A) Repeat the experiment ten times. Label the y-axis “Time” and the x-axis “Trial.” Plot the average time for all ten rats for each trial of the experiment.
B) Divide the rats into groups of females and males and repeat. Label the y-axis “Time” and the x-axis “Sex of Rat.” Plot the average time for each group.
C) Repeat the experiment ten times. Label the y-axis “Rat Number” and the x-axis “Time.” Plot the individual time for all ten rats for each trial of the experiment.
D) Divide the rats into two groups based on their speed from the initial data. Label the y-axis “Time” and the x-axis “Group.” Plot the average time for each group.
Answer: A) Repeat the experiment ten times. Label the y-axis “Time” and the x-axis “Trial.” Plot the average time for all ten rats for each trial of the experiment.
Answer:
we have to make another question we maxed it out again lol
Explanation:
Answer:
A. Repeat the experiment ten times. Label the y-axis “Time” and the x-axis “Trial.” Plot the average time for all ten rats for each trial of the experiment.
Explanation:
please help answer worth 15!!
Answer:
First option, check image uploaded.
Explanation:
Acceleration defined as time rate of change of velocity. Or change in velocity per change in time.
Acceleration is also the slope of the graph of velocity against time.
[tex]Acceleration = \frac{dv}{dt}[/tex]
Also change in displacement with time is velocity.
From the given options, the correct graph is in the first option, as shown in the image uploaded.
A woman stands on the edge of a cliff and throws a stone vertically downward with an initial speed of 10 m/s. The instant before the stone hits the ground below, it has 450 J of kinetic energy. If she were to throw the stone horizontally outward from the cliff with the same initial speed of 10 m/s, how much kinetic energy would it have just before it hits the ground
Answer:
It will have the same KE ( 450 J ) just before it hits the ground. The GPE transferred to KE is the same in both cases and the original KE is the same in both cases so the total will be the same.
The one thrown sideways will take longer to get to the ground but it will have the same velocity ( and therefore KE ) as the thrown down stone.
Explanation:
Help I'm struggling
Answer:
a. 10 Amps
b. 22 Ohms
c. 220 kW·h
d. $13.2
Explanation:
a. The question is with regards electric power, "P", which is given as follows;
P = I × V
Where;
P = The power generated by electric current
I = The current flowing in the circuit (through the resistance, R)
V = The voltage in the circuit
The given parameters of the electric oven are;
The resistance of the electric oven = R
The power consumed by the electric oven, P = 2200 W
The voltage at which the electric oven is working, V = 220 V
Therefore, from the equation for power, P = I × V, we have;
I = P / V
Therefore, we have;
I = 2,200 W/(220 V) = 10 Amps
b. The velocity, V = I × R
Where;
I = The current flowing
R = The resistance of the circuit
By making "R" the subject of the equation for voltage, "V", we have;
R = V/I = 220 V/(10 A) = 22 Ohms
c. The number of hours per day the resistor is used = 4 hours
The number of hours the resistor is used in 1 month (30 days) = 30 × 4 hours, t = 120 hours
The electric energy, E = P × t = 2200 W × 120 h = 220000 W·h = 220 kW·h
d. If electric energy costs, C = 0.06$/kW·h
Therefore, the cost to operate the electric oven during 1 month = 0.06$ × 220 kW·h = $13.2
Which of the following is not the result of nuclear decay.
An unstable atomic nucleus emits energy
An unstable atomic nucleus discharged particles
An unstable atom changes its identity
A stable atom change its identity
Answer:it’s c
Explanation:
Answer:
an unstable atomic nucleus emits energy
Explanation:
just toke quiz
An object has an acceleration of 6 m/s/s. If the net force
was tripled and the mass were halved, then the new
acceleration would be m/s/s.
Answer:
[tex]F = ma \\ a = \frac{F}{m} = 6 \\ when \: force \: is \: trippled \: and \: mass \: is \: halved \\ a = \frac{3F}{ \frac{1}{2} m} = \frac{3}{2} \times 6 \\ a = \frac{(3 \times 6)}{2} \\ a = \frac{18}{2} \\ a = 9 \: m {s}^{ - 2} [/tex]
Can someone please help me?
Answer:
I think the sun is the answer
What is the average velocity of atoms in 2.00 mol of neon (a monatomic gas)
at 308 K? Use the equation: -mv2=nRT
For m, use 0.02000 kg. Remember that R = 8.31 J/(mol-K).
O
A. 876 m/s
O
B. 87.6 m/s
O
C. 1540 m/s
O
D. 15,400 m/s
Answer:
876m/s
Explanation:
Using the formula
1/2mv² = 3/2nRT
mv² = 3nRT
m is the mass = 0.02kg
v is the average velocity of atom
n is the mole = 2.00atm
T is the temperature = 308K
R is the Boltzmann constant = 8.31 J/(mol-K).
Get the velocity
v² = 3nRT/m
Substitute the given values into the formula
v² = 3×2(8.31)(308)/0.02
v² = 3×5,118.96/0.02
v² = 15356.88/0.02
V = √767844
v = 876.27m/s
Hence the average velocity of the atom us 876m/s
If speed is measured in meters per second and time is measured in second, the unit of acceleration is
Answer:
meters per second squared or meters per second per second
Explanation:
If speed is measured in meters per second and time is measured in second, the unit of acceleration is "meters per second squared or meters per second per second."
To illustrate better, speed is measured in meters per second = m/s, while time is measured in second = s.
Hence, the unit of acceleration is m/s². This implies that acceleration is the number of meters per second the velocity changes every second.
