Answers
Answer:
a. 150 J
b. 150 J
c. 0 J
d. 0 J
Explanation:
The given parameters are;
The horizontal force with which the man pulls the canister, F = 50 N
The distance he moves the vacuum cleaner, d = 3.0 m
a. Work done, W = Force applied, F × Distance moved by the force, d
Therefore, for the work done by the 50 N force on the canister, we have;
W = 50 N × 3.0 m = 150 N·m = 150 J
b. Given that he pulls the canister at a constant speed, we have;
The acceleration of the canister, a = 0 m/s²
Therefore, the net force on the canister, [tex]F_{NET}[/tex] = F - [tex]F_{Friction}[/tex] = m × a
Where;
m = The mass of the canister
a = The acceleration of the canister
F = The applied force = 50 N
[tex]F_{Friction}[/tex] = The force of friction
∴ [tex]F_{NET}[/tex] = m × a = m × 0 m/s² = 0 N
Therefore;
[tex]F_{NET}[/tex] = F - [tex]F_{Friction}[/tex] = 0 N
From which we have;
F = [tex]F_{Friction}[/tex] = 50 N (The applied force, F is equal to the force of friction,
The work done by friction = The force of friction × The distance in which the force of friction acts
∴ The work done by friction = [tex]F_{Friction}[/tex] × d - 50 N × 3.0 m = 150 J
The work done by friction = 150 J
c. The normal force, N acts perpendicular to the force of friction
The distance the canister moves in the perpendicular direction, [tex]d_p[/tex] = 0 m
∴ The work done by the normal direction = N × [tex]d_p[/tex] = N × 0 m = 0 J
The work done by the normal direction = 0 J
d. The vacuum weight, W, acts on the same line as the normal force but in the opposite direction to the normal force, N
Therefore, the weight, W, acts perpendicular to the line of motion of canister
The distance the canister moves in the direction of the weight, [tex]d_{wieght}[/tex] = 0 m
Therefore, the work done by the weight = W × [tex]d_{wieght}[/tex] = W × 0 m = 0 J
The work done by the weight = 0 J
Related Questions
This was due yesterday...
Answers
Answer:
the answer is c
Explanation:
water is abiotic
Answer:
the answer is C
Explanation:
Its the only reaction with abiotic and biotic.
5 reasons why it is important to do proper maintenance and safety of kitchen tools and equipment
Answers
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.
Learn more here:
https://brainly.com/question/19849446
A boy is displaced at a certain distance (x) by a force of 30N. If the displacement is in the direction of the force, what is the value of x.
Answers
The question is incomplete, the complete question is;
A body is displaced through a certain distance x by a force of 30newtons .if the workdone is100j and the displacement is in the direction of the force, what is the value of x
Answer:
3.33 m in the direction of the force
Explanation:
We say that work is done when the force applied moves an object by some distance in the direction of the force.
Hence;
Work = Force × displacement
Displacement = Work /Force
Displacement = 100 J/30 N
Displacement = 3.33 m in the direction of the force
a brick 25cm long ,9cm wide 5cm thick has a mass of 1000g determine the greatest pressure that can be exerted by the brick on a flat surface
Answers
Answer:
The greatest pressure is 2178 Pa
Explanation:
Pressure
It's the force applied perpendicular to the surface of an object per unit area over which the force is distributed.
If F is the force applied and A is the surface area, the pressure is calculated as:
[tex]\displaystyle P=\frac{F}{A}[/tex]
The brick has dimensions of 25 cm by 9 cm by 5 cm. There are three possible areas of contact:
[tex]A_1=25*9 = 225 cm^2=0.0225\ m^2[/tex]
[tex]A_2=25*5= 125 cm^2=0.0125\ m^2[/tex]
[tex]A_3=9*5= 45 cm^2=0.0045\ m^2[/tex]
The brick has a mass of m=1000 g = 1 Kg and exerts a force equal to its weight when placed on a flat surface, thus:
F = m.g = 1 * 9.8 = 9.8 N
The greatest possible pressure will occur when the area is the least possible [tex](0.0045\ m^2)[/tex], since the pressure and the area are inversely proportional, thus:
[tex]\displaystyle P_{max}=\frac{9.8}{0.0045}[/tex]
[tex]\displaystyle P_{max}=2178 \ Pa[/tex]
The greatest pressure is 2178 Pa
how many atoms does each element have in HNo3
Answers
Answer:
1 hydrogen, 1 nitrogen and 3 oxygen atoms.
Explanation:
What force must you exert on a ball point pen in order to apply a pressure of0.067 N/mm2on a piece of paper, if the ball of the pen has a surface area of1.2 mm2touching the paper?
Answers
Answer:
The force that must be exerted on the pen is 0.0804 N.
Explanation:
Given;
pressure applied on a piece of paper by ball point of the pen, P = 0.067 N/mm²
surface area of the pen ball point, A = 1.2 mm²
The force that must be exerted on the pen is calculated as;
F = P x A
F = (0.067 N/mm²) x (1.2 mm²)
F = 0.0804 N
Therefore, the force that must be exerted on the pen is 0.0804 N.
If you double the distance between you and the center of Earth, what happens to the strength of the gravitational field you experience?
Answers
Answer:
The strength of gravity decreases.
An example of that would be if you were in space; you float around because there's no gravity.
Research is being done on the use of radio waves in destroying cancer cells. What type of frequency would be best used in this technology?
Answers
Answer:
Radiofrequency Ablation (RFA) which is a type of Electrical Energy is used to treat cancer. If it sees heat made by radio waves to kill cancer cells. Ablation means destroying completely. The method is putting RFA a probe (electrode) that goes through the skin into the tumor. A CT scan is needed so to check that the probe is in exactly the right place. An electrode in the probe creates radiofrequency energy to produce heat and kill the cancer cells.
Explanation:
Answer:
The destruction of cancer cells requires a lot of energy, so high-frequency radio waves can be used in this technology because they have high energy.
Explanation:
sample response edge2022
Which has the greater change in momentum, a ball which hits a wall and sticks ot a ball that hits a wall and bounces backwards?
Answers
The total mass of the train and its passengers is 750000kg. The train is traveling at a speed of 84m/s. The driver applies the brakes and the train takes 80s to slow down to a speed of 42m/s.
Answers
Answer:
|F| = 393750 N
Explanation:
Given that,
Total mass of the train, m = 750000 kg
Initial speed, u = 84 m/s
Final speed, v = 42 m/s
Time, t = 80 s
We need to find the net force acting on the train. The formula for force is given by :
F = ma
[tex]F=\dfrac{m(v-u)}{t}\\\\F=\dfrac{750000\times (42-84)}{80}\\\\F=-393750\ N[/tex]
So, the magnitude of net force is 393750 N.
4. Deformation of the hood in a head-on collision-
A. increases the mass of the car and increases the force on the occupants.
B. decreases the mass of the car and decreases the force on the occupants.
C. decreases the stopping distance and increases the force on the occupants.
D. increases the stopping distance and decreases the force on the occupants.
Answers
Answer:
D
Explanation:
not sure but the answer is on quizlet . & i got a 100 so yeah
Deformation of the hood in a head-on collision- would increase the stopping distance and decreases the force on the occupants.
Therefore the correct answer is option D.
What is elastic collision?It is the type of collision in which the total momentum as well as the kinetic energy of the system is conserved.
In an elastic collision, the quantity's momentum is preserved because the momentum before and after the impact is equal.
In a head-on accident, deformation of the hood would lengthen the required stopping distance and lessen the force applied to the passengers.
The stopping distance increases which increases the time period and reduces the impact of the force.
Thus, the correct answer is option D.
Learn more about the collision from here, refer to the link;
brainly.com/question/2356330
#SPJ2
what is the acceleration of a 10kg mass pushed by a 5N force?
Answers
Answer:
0.5 m/s²Explanation:
The acceleration of an object given it's mass and the force acting on it can be found by using the formula
[tex]a = \frac{f}{m} \\ [/tex]
From the question we have
[tex]a = \frac{5}{10} = \frac{1}{2} \\ = 0.5[/tex]
We have the final answer as
0.5 m/s²Hope this helps you
can anyone help?? (or tell me some apps)
Answers
Answer:
try "socratic" it's an awesome app!
Explanation:
What is measurement
Answers
Answer:
There is no measurment
Explanation:
Have an amazing day!
. Justin completes an experiment length of time a paper airplane stays in flight. He records his results in a
data table. These results are known as _______results.
A. written
B. tabled
C. qualitative
D. quantitative
Answers
Explanation:
Qualitative is to observe and note a quality about something - like the paper airplanes are made out of "white" paper. White is a qualitative property.
Quantitative is to observe and measure a value - like the time of flight of a paper airplane.
Please select the word from the list that best fits the definition
state of most nonmetals at room temperature
options: left, gas, semiconductor, halogen, right, solid, carbon nitrogen
Answers
Answer:
the answer is gas if I'm not mistaken.
Explanation:
Don't come at me if I'm wrong please :')
why mole is called fundamental unit.
Answers
Explanation:
because it doesn't depend upon other unit like kg meter and second
How will this change in income affect consumer spending in the economy?
A Increase spending
B Decrease spending
Answers
B. Decreased spending.
Help!
In a school zone, speeding fines?
A. are the same.
B. are doubled.
C. are tripled.
Answers
Determine the pressure P of a 450K Oxygen gas in a gas chamber when its initial pressure is 175Pa has a temp 300K
Answers
Answer:
262.5Pa
Explanation:
Given parameters:
P1 = 175Pa
T1 = 300K
T2 = 450K
Unknown:
P2 = ?
Solution:
To solve this problem, we are going to use an adaptation of the combined gas law.
[tex]\frac{P1}{T1}[/tex] = [tex]\frac{P2}{T2}[/tex]
Insert the parameters and solve;
[tex]\frac{175}{300}[/tex] = [tex]\frac{P2}{450}[/tex]
P2 = 262.5Pa
which came the egg or the chiken
Answers
Answer:
the chicken.
Explanation:
Answer:
the chicken
Explanation:
Questlon 2 of 10
What does Archimedes' principle state?
OA. The pressure of a fluid decreases as the speed of the fluid
OB. The pressure exerted by a fluid decreases as depth increases.
OC. The pressure at two pistons within an enclosed fluid system is
OD. The buoyant force on an object is equal to the weight of the fluid
increases.
always the same.
displaced by the object.
SUBMIT
Answers
Answer:
the answer is OD which says tge buoyant girce on an object is equal to the weight of th fluid
Two bodies of mass m₁ & m₂ are moving with the same velocity 'v' K.E. will be greater for??
Answers
Answer:
the one with a higher mass
Explanation:
The body with more mass will have the greater kinetic energy of the two.
Kinetic energy is the energy due to the motion of body. It is mathematically expressed as:
K.E = [tex]\frac{1}{2}[/tex] m v²
m is the mass
v is the velocity
Since the velocity of the two bodies are the same, and mass is directly proportional to kinetic energy, the body with more mass will have a higher kinetic energy.
So between mass m1 and mass m2, the one with a greater mass will have a higher kinetic energy
Please hurry this is urgent right answers only!!!!!
How do you know when forces are balanced (zero net
force) or unbalanced in a system? Draw a labeled
diagram to support your explanation.
Answers
Explanation:
if two individual forces are of equal magnitude and opposite direction, then the force is said to be balanced. when there is an individual force that is not being balanced by a force of equal magnitude and in the opposite direction.
explain what is meant by pressure.
Answers
Answer:
Pressure means physical force that is another person or object.
A 11.0 kg test rocket is fired vertically from Cape Canaveral. Its fuel gives it a kinetic energy of 1985 J by the time the rocket engine burns all of the fuel. What additional height will the rocket rise
Answers
Answer:
h = 18.41 m
Explanation:
Given that,
Mass of a test rocket, m = 11 kg
Its fuel gives it a kinetic energy of 1985 J by the time the rocket engine burns all of the fuel.
According to the law of conservation of energy,
PE = KE = mgh
h is height will the rocket rise
[tex]h=\dfrac{E}{mg}\\\\h=\dfrac{1985 }{11\times 9.8}\\\\h=18.41\ m[/tex]
So, the rocket will rise to a height of 18.41 m.
Electrons can move between substances ſchree ways. Which of the following can be
described as electrons moving from one substance to another because they are rubbing
on an insulator?
a. induction
b. friction
c. conduction
Answers
Answer:
B.) “Shininess” should be explained as “Light bounces off the moving electrons.”
Explanation:
when will an object accelerate in terms of force
Answers
Answer:
when an external force applied on an object
Explanation:
there will be a change in velocity this means it is accelerating
If you put something like a piece of cardboard between a magnet and an iron nail, the magnet still holds the nail in place, even though the magnet is not touching the nail.
Explain how that happens.
Answers
Answer:
Hiiii
Explanation:
Helllooooooo
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?
Answers
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]
