You've got a flat tire. To lift your car, you make a homemade lever (see the figure (Figure 1)). A very light 1.6-m-long handle part is pushed down on the right side of the fulcrum and a 0.050-m-long part on the left side supports the back of the car.
How hard must you push down on the handle so that the lever exerts an 6900- N force to lift the back of the car?
Answers
How hard you must push down on the handle is by applying a force of 215.63 N
Moment of a forceThe moment of a force about a point is the turning effect of the force about that point.
The moment of a force M = Fd where
F = force and d = perpendicular distance of force from pivot point.Now, for you to lift up the car, the moment due to your force about the fulcrum, M equals the moment due to the force on back of car. M'
M = M'
FD = F'd where
F = Force applied, D = distance of force from fulcrum = 1.6 m, F' = force applied on back of car = 6900 N and d = distance of force on back of car from fulcrum = 0.050 mMaking F subject of the formula,we have
F = F'd/D
Substituting the values of the variables into the equation,we have
F = F'd/D
F = 6900 N × 0.050 m/1.6 m
F = 345 Nm/1.6 m
F = 215.625 N
F ≅ 215.63 N
So, how hard you must push down on the handle is by applying a force of 215.63 N
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Related Questions
Which wave interaction results in a change in the direction of the wave as it passes through one medium to another medium? absorption diffraction reflection refraction.
Answers
Answer: Reflection
Explanation:
The incident wave is the wave coming from the source. When an incident wave hits an interface, it splits into two parts. There is the reflected wave and the transmitted wave. Assuming that the incident wave hits the interface directly, and not at an angle, the reflected wave will reflect back to the source, and the transmitted wave will pass through the interface and continue on its path. The reflected wave will be "upside down" as it gets sent back.
Answer:refraction
Explanation:
right on edge 2023
What happens to the period of the motion when the spring constant increases? Does it increase, decrease, or stay the same?
Answers
Answer:
The answer would be Increase becaause the springs constantmotion is increasing.
Explanation:
The force that opposes the motion of an object is called:.
Answers
Answer:
The Force of Friction!
Explanation:
I hope I could help you, Brainliest please!
someone please answer this, ill give you brainliest and your getting 100 points.
Answers
Answer:
B
Explanation:
Here .
B is denoted to asthenosphere
E is Mantal section which consists of semifluid magma or lava .can someone please answer this, ill give you brainliest and your getting 100 points.
Answers
Explanation:
Science says that youngest rock can be found in between ocean .
So plates should move away from each other to form ocean .
Option C is correct
Where would you find the youngest rock? At the boundary between the
O Pacific and North American plates
O Nazca and South American plates
O African and South American plates ✓
O Indian and Eurasian plates
When two tactonic plates diverge ,the water gets a way to space out , helping it to find a way to flow ,which helps it to carry out soil with itself, resulting in the formation of rocks , farther the rocks ,older they are cause of flow of water and surface area.What’s More
Activity 1. Strength of IMFA and Physical Properties of
Covalent Compounds
For each pair of molecules, identify the one with the higher boiling point (BP), melting
point (MP), viscosity (V), surface tension (ST) and vapor pressure (VP). Briefly explain
your choice.
Answers
what is Newton's first law
Answers
Answer:
it is inertia
Explanation:
Answer:
Newton's first law: the law of inertia
Explanation:
Describe the key features of the national grid, explaining why electricity is transmitted in this way.
Answers
The National Grid network is made of high-voltage power lines, gas pipelines, interconnectors, and storage facilities that together enable the distribution of electricity. The grid ensures that all areas of Said country have power/gas/oil products. this also allows more efficient power generators like nuclear plants to contribute more to the power grid than just where they are located.
Imagine that martians launch a rocket toward the Earth at a great speed. While the rocket is traveling toward us, it will appear _____ than it actually is.
A. Larger
B. Darker
C. More blue
D. More red
Answers
Answer:
The rocket would appear more blue than it actually is.
Explanation:
Assume that the rocket was initially at a distance of [tex]d[/tex] away from the Earth. Let [tex]c[/tex] denote the speed of light. It would take a time of [tex](d / c)[/tex] before the first crest of the light (an electromagnetic wave) from the rocket arrive at the Earth.
If [tex]T[/tex] denote the period of this EM wave. The next crest of this wave would leave the rocket at a time of exactly [tex]T\![/tex] after the previous crest.
Let [tex]v[/tex] denote the speed at which the rocket travels toward the Earth. In that time period of [tex]T[/tex], the rocket would have moved towards the earth by [tex]v\, T[/tex]. Thus, the next crest of this wave would need to cover a distance of only [tex](d - v\, T)[/tex] (as opposed to [tex]d[/tex], the distance required for the first crest) before reaching the Earth. Thus, this subsequent crest would need to travel for a distance of only [tex](d - v\, T) / c[/tex] before reaching the earth.
Let [tex]t = 0[/tex] refers to the time when the first crest of the light from the rocket leaves the rocket. The next crest would leave the rocket at time [tex]t = T[/tex].
The first crest would arrive at the earth at [tex]t = (d / c)[/tex].The next crest would arrive at the earth at [tex]t = T + ((d - v\, T) / c)[/tex].Thus, it would appear to an observer on the earth that the period of the light from the rocket was:
[tex]\begin{aligned}& \left(T + \frac{d - v\, T}{c}\right) - \left(\frac{d}{c}\right) \\ =\; & T - \frac{v\, T}{c}\end{aligned}[/tex].
In other words, observers on the Earth would find the period of this wave shorter than it actually is at the rocket ([tex]T - (v\, T) / c[/tex] as opposed to [tex]T[/tex].)
The frequency of a wave is inversely proportional to the period of that wave. Thus, observers on the Earth would find the frequency of the wave from the rocket higher than the frequency of this wave at the rocket.
EM waves of higher frequency (higher energy) appear more blue than ones of lower frequency. Therefore, this rocket would appear more blue to observers on the Earth than it actually is.
How do bearings help reduce friction?
Answers
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Bearings are constrained elements used to reduce the friction of certain moving parts in a machine or device. This is done by replacing sliding friction with rolling friction. Bearings are used to provide better linear motion or rotation around a fixed axis.Roller bearings are typically cylinders similar to free rollers, except that they are constrained in their motion. Ball bearings are spheres that are held in a track.During early research in nuclear energy, why were scientists surprised that the products from splitting a uranium nucleus had less mass than the reactants? They expected that the large release of energy would cause an increase in mass. Up to that time, only chemical changes were known to form less mass than they started with. All known changes always started and ended with the same amount of mass. Other known nuclear changes resulted in the same mass of products as reactants.
Answers
The scientist gets surprised In terms of the masses of the subatomic particles, scientists anticipated the rule of conservation of mass to apply to nuclear fission and it got failed.
What is nuclear power?The utilization of nuclear reactions to generate energy is known as a nuclear power. Nuclear fission, nuclear decay, and nuclear fusion processes are all sources of nuclear energy.
Nuclear power facilities currently produce the great bulk of the electricity generated by nuclear fission of uranium and plutonium.
In terms of the masses of the subatomic particles, scientists anticipated the rule of conservation of mass to apply to nuclear fission.
An atom's mass is not equal to the sum of the masses of the subatomic particles that make it up in actuality.
The energy that bonds the subatomic particles is the reason behind this. When a link is broken, the mass of the energy of the bonds is lost, resulting in what we now refer to as a mass defect.
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Answer:
I don't know the answer but I can say the answer isn't B, so don't pick B.
Explanation:
I got it wrong on edge test, i picked B but, B is not correct.
differentiate between loadstone and bar magnet
Answers
is that magnet is a piece of material that attracts some metals by magnetism while lodestone is a naturally occurring magnet.
What factors do NOT affect friction between two objects? Explain how you know this.
Answers
The frictional force between two bodies depends mainly on three factors: (I) the adhesion between body surfaces
(ii) roughness of the surface
(iii) deformation of bodies.
<3
When floating a ping-pong ball with a hairdryer, which two forces are balanced?
Force pushing up:
Force pulling down:
Answers
The force of air that’s coming from hairdryer which is pushing ping pong ball upwards.
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A positive test charge of 5.0x10 -6 C is in an electric field that exerts a force of 2.0x10 -4 N on it. What is the magnitude of the electric field at the location of the test charge
Answers
answer:
click on the picture, hope it helps
The magnitude of the electric field at that location is is 40 N.C⁻¹.
What is electric field?The force per unit charge exerted on a positive test charge that is at rest at a given position is the force per unit charge that is used to define the electric field analytically.
Electric charge or magnetic fields with variable amplitudes can produce an electric field.
Given parameters:
Charge of the positive test charge, q = 5.0x10⁻⁶ C.
Electric force exerted by the electric field, F = 2.0x10⁻⁴ N.
Then, electric field at the position, E = F/q
= 2.0x10⁻⁴ / 5.0x10⁻⁶ N.C⁻¹.
= 40 N.C⁻¹.
Hence, the magnitude of the electric field at the location of the test charge is 40 N.C⁻¹.
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What is the acceleration of
a 6 kg object being pulled
with a force of 12 N?
Answers
Answer:
2 m/s^2
Explanation:
Use Newton's 2nd Law of motion:
F = ma
12N = (6kg)a
a = 12/6
a = 2 m/s^2
What should scientists do when they see that the data collection or analysis
from their experiment has limitations?
A. Decide not to report any of the experimental results.
ОС
B. Repeat the experiment to see if it still has limitations.
C. Ignore the limitations when they draw conclusions.
D. Describe the limitations in detail in their final report.
Answers
Answer:
repeat using same variables
Explanation:
have peer repeat using same variables
from their experiment has limitations?
A. Decide not to report any of the experimental results.
ОС
B. Repeat the experiment to see if it still has limitations.
C. Ignore the limitations when they draw conclusions.
D. Describe the limitations in detail in their final report.
rearrange the equation d=vt-1/2at^2 to find v
Answers
Explanation:
This is the formula for the change in distance (δx) of an object moving with constant acceleration (a) and initial velocity (v), one of the standard Equations of motion. To solve for t first rearrange
12at2+vt−δx=0
then apply the formula for solving a Quadratic equation if our equation is At2+Bt+C=0 then the solution is
t=−B±B2−4AC√2A,
here A=12a, B=v, C=−δx so plugging these in the formula gives
t=−v±✓v2−4(12a)(−δx)√2(12a) (Apply quandriatic equation)
simplifying
t=−v±v2+2aδx√a.
Note how there are two possible solutions one corresponding to the + and one to the -. Sometimes one of these will give a negative time, so you may want to eliminate that. Indeed if δx>0, v>0 and a>0 we only want the positive solution. In other cases you may want to consider both solutions, for instance if we thow a ball up in the air the initial velocity is positive and the acceleration is negative, it will pass a fixed height above your head twice, once on the way up and once on the way down.
A slinky was measured to carry a longitudinal wave 10 tiles (on the floor) per second. One tile is 30 cm. What is the speed of this wave? In your answer , use millimeters and scientific notation
Answers
(10 tiles/sec) · (30 cm/tile) = 300 cm/sec
That's 3000 mm/sec
That's 3 x 10³ mm/sec
the point where the parallel rays of light converge in a concave mirror is called..........
Answers
Answer : Focal Point
The parallel light rays striking the concave mirror reflect back and converge at the Focal Point in front of it.
Different Betweens in Self Induced emf and Mutual Induced emf ~
Thank uh☃️
Answers
Answer:
brain cells that are in your brain
Explanation:
it has something to do with brain cells
What is the unit of measurement used for Electric Potential difference?
Answers
Answer:
e. V
Explanation:
Electric potential is the amount of work needed to move a unit charge from a reference point to a specific point against an electric field.
In the SI, the units are Volts denoted by the letter V, in honor of Alessandro Volta
Option E is the correct answer
hello humans ~
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explain how eyes get used to darkness after some time?
Answers
It is all about the dilation of pupils. When darkness falls, your pupils enlarge, whereas in daylight, your pupils shrink.
I am joyous to assist you at any time.
Read the scenario below and answer the question that follows. Mariah trained for months leading up to the marathon, and she won. After seeing this, her friends and family would describe her as motivated and athletic. According to Maslow, which need is Mariah trying to meet? A. Safety B. Physiological C. Esteem D. Cognitive Please select the best answer from the choices provided A B C D.
Answers
According to Maslow, the need that Mariah is trying to meet by training for months in order for her family to describe her as athletic and motivated is esteem.
What are Maslow's Hierarchy of Needs?In 1943, an American psychologist called Abraham Maslow classified human needs in an hierarchical order.
The hierarchy of needs are as follows:
physiological needs - food and sheltersafety needs - securitylove and belonging needs - familyesteem needs - confidence in personal growthself-actualization needs - fulfilment of full potentialAccording to this question, Mariah is trying to meet esteem needs.
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Answer:
C
Explanation:
A 5 kg rock is lifted 3 m above the ground. What is the rock's GPE now?
A. 15 J
B. 15,000 J
C. 1,500J
D. 150 J
Answers
GPE=5*10*3= 150 J
Side-note: If you were to use a real-life scenario/accurate gravitational force, you would use 9.8 N.
So the most “accurate” equation would be 5*9.8*3=147 J, which is already roughly near 150 J.
fill in the blanks
An object's acceleration describes its change in speed. If the speed of an object increases with time, its graph will have a ---------- gradient. If an object slows down, its graph will have a --------- gradient.
Answers
Answer:
positive gradient
Negative gradient
Explanation:
An object's acceleration describes its change in speed. If the speed of an object increases with time, its graph will have a positive gradient. If an object slows down, its graph will have a Negative gradient.
A straight line sloping upward to the right represents a positive gradient while a straight line sloping downward to the right represents negative gradient.
An object's acceleration describes its change in speed. If the speed of an object increases with time, its graph will have a positive gradient. If an object slows down, its graph will have a negative gradient.
An object's acceleration describes its change in speed.
If the speed of an object increases with time, its graph will have a positive gradient.
If an object slows down, its graph will have a negative gradient.
The gradient of a graph is the slope of the line. In the case of a speed-time graph, the gradient of the graph represents the acceleration of the object. If the gradient of the graph is positive, the object is accelerating. If the gradient of the graph is negative, the object is decelerating.
When an object's speed increases, the graph of its speed-time will have a positive gradient. This is because the object is getting faster over time, which means that its acceleration is positive.
When an object's speed decreases, the graph of its speed-time will have a negative gradient. This is because the object is getting slower over time, which means that its acceleration is negative.
Hence, An object's acceleration describes its change in speed. If the speed of an object increases with time, its graph will have a positive gradient. If an object slows down, its graph will have a negative gradient.
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A powerlifter deadlifts a 365 lb (167 kg) barbell to a height of 0. 85 m, and then lowers the bar, applying a constant upward force. The bar reaches the ground with a speed of 2 m/s. What was the work done by the powerlifter in lowering the bar to the ground (in J)
Answers
When the powerlifter deadlifts a 167 kg barbell to a height of 0. 85 m, the work done by the powerlifter is mathematically given as
W=-1057.11J
What was the work done by the powerlifter in lowering the bar to the ground?Question Parameters:
A powerlifter deadlifts a 365 lb (167 kg) barbell to a height of 0. 85 m,
The bar reaches the ground with a speed of 2 m/s
Generally, the equation for the work done is mathematically given as
W=0.5mvf^2+mghf)-(0.5mv1^2+mghi)
Therefore
W=0.5*16*167*2^2-(167*9.8*0.85)
W=-1057.11J
In conclusion, work done is
W=-1057.11J
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Vr1 = _______volts
O 30.
O 160.
O 24.
O 6.0
Answers
Answer:
Explanation:
Potential drop across R1, VR1
= Supply Voltage
= 24V
Well look at the diagram
Current passing refered to II is constantWe know
according to ohms law
[tex]\\ \rm\Rrightarrow \dfrac{V}{I}=R[/tex]
[tex]\\ \rm\Rrightarrow \dfrac{V}{R}=I[/tex]
As I is constantV remains constantOption C is correct
Sirius Satellite Radio provides continuous radio broadcasts across the United States. Sirius does not use geostationary satellite(s). Explain why you think Sirius consists of one satellite or a constellation.
Answers
Sirius represented a satellite constellation operated by the Nordic Satellite AB (NSAB). It was used by Nordic countries.
What was Sirius?Sirius was a satellite constellation operated by the SES SIRIUS AB (or former Nordic Satellite AB) created by Sweden and Norway governments.
Sirius constellation provided the Nordic countries with different types of communications outcomes (for example, for tv issues).
This satellite constellation composed of Sirius satellites was the only one to operate in the Tundra orbit (5.0° East, geostationary orbit).
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good evening! Can someone please answer this, ill give you brainliest and your earning 50 points. Would be very appreciated.
Answers
Answer:
The gases which are very good at absorbing long wave photons of infrared gas.
Explanation:
These absorption is called green house effectIt is the main reason behind global warming