URGENT PLEASE HELP!!!! GIVING BRAINLIEST!! If you answer this correctly ill answer some of your questions you have posted! (30pts)
Answers
Answer:
5
Explanation:
From the attachement,
M.A = Load(L)/Effort(E)
M.A = L/E...................... Equation 1
Where M.A = .Mechanical Advantage, L = Load, E = Effort.
Given: L = 500 N, E = 100 N
Substitute these values into equation 1
M.A = 500/100
M.A = 5.
Hence the actual mechanical advantage of the pulley is 5
Related Questions
A cinder block is sitting on a platform 10 m high. It has a mass of 25 Kg. What is the potential energy
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Answer:
2450J
Explanation:
PE = mgh
PE = (25)(9.8)(10)
What is the momentum of a 750 kg car traveling at a velocity of 25 m/s north?
Answers
Answer:
18750 kg-m/s
Explanation:
Momentum = mass x velocity
Answer:
18750 kg-m/s
Explanation: Momentum = mass x velocity 750x25 = 18750 kg-m/s
Can you brainlist
What is the geocentric angle of the earthquake focus?
Answers
Answer:
epicenter
Explanation:
the epicenter Is d point directly above it at the structure of the earth
How much work did he do if he traveled 20 meters?
Answers
What is the most accurate way to check your heart rate (bpm)? Help me?
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Answer:
Count your pulse for 60 seconds.
Explanation:
This isn't physics, this quesiton should be marked in health.
1. What is the difference between thermal energy and heat? Give an example.
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Answer:
when you run u get tied
Explanation:
I do not now this one
F. A 50. A resistor (R2), and unknown resistor R2, a 120 Volt source, and an ammeter are connected in a
complete circuit. The ammeter reads 0.50 ampere (current).
R1
a. Determine the resistance of Rz.
R2
Answers
Complete question is;
A 50.-ohm resistor, an unknown resistor R, a 120-volt source, and an ammeter are connected in a complete circuit. The ammeter reads 0.50 ampere.
A) Calculate the equivalent resistance of the circuit shown.
B) Determine the resistance of resistor R shown in the diagram.
Answer:
A) R_eq = 240 Ω
B) R = 190 Ω
Explanation:
A) To get the equivalent resistance, we will use the formula;
R = V/I
Where;
V is Voltage
I is current
R is equivalent resistance
From the question, V = 120 V and I = 0.5A
Thus;
R_eq = 120/0.5
R_eq = 240 Ω
B) From the image, we see that the resistors are connected in series.
Formula for resistors in series is;
R = R1 + R2 +..... Rn
Thus;
240 = 50 + R
R = 240 - 50
R = 190 Ω
A) The equivalent resistance of the circuit shown will be 240 Ω.
B) The resistance of resistor R will be 190 Ω
What is resistance?Resistance is a type of opposition force due to which the flow of current is reduced in the material or wire. Resistance is the enemy of the flow of current.
The given data in the problem is;
R is the resistance = 50.-ohm
v is the voltage = 120-volt source
I is the value of the current =0.50 ampere.
A) The equivalent resistance of the circuit shown will be 240 Ω.
According to ohm's law
[tex]\rm R= \frac{V}{I} \\\\ \rm R= \frac{120}{0.5} \\\\ \rm R=240 \ ohm[/tex]
Hence the equivalent resistance of the circuit shown will be 240 Ω.
B) The resistance of resistor R will be 190 Ω
The given resistors are connected in the series;
R = R1 + R2 +..... Rn
240 = 50 + R
R = 240 - 50
R = 190 Ω
Hence the resistance of resistor R will be 190 Ω
To learn more about the resistance refer to the link;
https://brainly.com/question/20708652
The process of sediments being compacted and cemented to form sedimentary rocks is called
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Answer:
Lithification is the answer.
The current in the wires of a circuit is 180.0 milliAmps. If the
voltage impressed across the ends of the circuit was doubled
and the resistance was one-third the original value, then its
new current would be _____milliAmps.
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Explanation:
ls xgfmc!hchlvb! jt?bjgchfb j
Each bat can produce different frequencies of ultrasound. Explain why this is useful if there are many bats hunting together.
Answers
Answer: Although low frequency sound travels further than high-frequency sound, calls at higher frequencies give the bats more detailed information--such as size, range, position, speed and direction of a prey's flight. Thus, these sounds are used more often.
Explanation:
Determine the kinetic energy (in joules) of a 1000 kg roller coaster car that is moving with a speed of 25.0 m/s?
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Explanation : using KE formula 1/2 m v^2 .
Fossil fuels are burned, transferring their chemical potential energy to heat energy. How are nuclear power stations different?
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Answer:
fossil fuels are natural and limited, nuclear is man made and more toxic
Explanation:
Clothes in a dryer rub together and begin clinging to each other
A. Friction
B. Conduction
C. Induction
Answers
Answer:
Conduction
Explanation:
Because they touch lol
Answer:
Conduction
Explanation:
Because induction is the pass of electricity without contact and conduction is the complete opposite
Tom puts a metallic cover over his car's windshield after parking. How does this control
the sun's rays during a sunny day?
Answers
14
A measure of the gravitational force exerted on an object?
A Weight
B) Force
C)Air resistance
Answers
Answer:
C
Explanation:
Answer:
A) weight
Explanation:
Hope it helps :))
Joel uses a force of 50 Newtons to hold two weights 0.60 meters above his head. How much work is Joel doing on the weights?
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The voltage across the terminals of a generator is 5.7 v when it supplies a current of 0.3 A. It becomes 5.1 V when I=0.9A. Find its emf and it's internal resistance
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Answer:
The emf of the generator is 6VThe internal resistance of the generator is 1 ΩExplanation:
Given;
terminal voltage, V = 5.7 V, when the current, I = 0.3 A
terminal voltage, V = 5.1 V, when the current, I = 0.9 A
The emf of the generator is calculated as;
E = V + Ir
where;
E is the emf of the generator
r is the internal resistance
First case:
E = 5.7 + 0.3r -------- (1)
Second case:
E = 5.1 + 0.9r -------- (2)
Since the emf E, is constant in both equations, we will have the following;
5.1 + 0.9r = 5.7 + 0.3r
collect similar terms together;
0.9r - 0.3r = 5.7 - 5.1
0.6r = 0.6
r = 0.6/0.6
r = 1 Ω
Now, determine the emf of the generator;
E = V + Ir
E = 5.1 + 0.9x1
E = 5.1 + 0.9
E = 6 V
Why is ultraviolet radiation considered more dangerous to humans than infrared radiation?
ANSWER:Ultraviolet radiation has a shorter wavelength than infrared radiation, and thus, the waves have higher energy. This allows them to penetrate the first layers of skin on humans and can mutate the DNA in the cells of the skin. This can result in cancer because of the mutations caused by the ultraviolet radiation.
Answers
Jacob is building a soapbox derby car. He hopes to win an upcoming downhill race in his neighborhood.
Which of the following should he take into consideration if his only concern is winning the race?
A. the color of the goggles that he wears
B. the shape of the car he makes
C. the mass of the materials he uses
D. the strength of the materials he uses
Answers
An ohm is best described as a unit of measure for...
A. electrical resistance
B. electrical current
C. electrical potential difference
D. magnetic field strength
Answers
A desk with a mass of 40kg is being pushed across the classroom and it accelerates at a rate of 5m/s squared . What is the force being applied to the desk?
Answers
Which two statements describe what happens in both nuclear fusion and
nuclear fission reactions?
A. Each nucleus formed has fewer protons than the original nucleus
had.
B. Nuclei with small masses combine to form nuclei with larger
masses.
C. Radiation is released from the nuclei that undergo a reaction.
D. A small amount of the mass in each nucleus that undergoes a
reaction is converted to energy.
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Answer:
C. Radiation is released from the nuclei that undergo a reaction.
D. A small amount of the mass in each nucleus that undergoes a
reaction is converted to energy.
Two statements, that describe what happens in both nuclear fusion and nuclear fission reactions, are:
Radiation is released from the nuclei that undergo a reaction.A small amount of the mass in each nucleus that undergoes a reaction is converted to energy.Hence, option (C) and (D) are correct.
What is nuclear reaction?A nuclear reaction is a process in nuclear physics and nuclear chemistry where two nuclei or a nucleus and an outside subatomic particle meet to create one or more new nuclides. Consequently, at least one nuclide must change throughout a nuclear reaction.
Instead of being referred to as a nuclear reaction, the process is simply referred to as a sort of nuclear scattering if a nucleus interacts with another nucleus or particle and they subsequently separate without altering the nature of any nuclide.
Learn more about nuclear reaction here:
https://brainly.com/question/16526663
#SPJ5
A flight distance from philadelphia to cancun is 1469 miles.the estimated flight time is 3.25 hours.What is the avarage speeede of the plane in miles per hour(number and units)?
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Answer:
1469 miles /3.25 hours = 452 miles per hours
Explanation:
divide distance by the time it takes to get there
The net force of two forces F1 and F2 acting in the same direction is 85N.And if is 15N when they are exerted in opposite directions. Find the magnitudes of F1 and F2
Answers
A snowflake falls from a cloud that is 500 m above the ground. It hits the ground after
being pulled down due to the acceleration of gravity (-10 m/s2). How fast will it be
going as it hits the ground?
Answers
Answer:
i wabnt the points lol
Explanation:
Mr. Cudd tries riding a bike to see if he still remembers how. As he gains some speed, he accidentally squeezes the front brakes. What happens immediately after is an example of which one of Newton’s laws?
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Answer:
Newton's second Law of motion
A body accelerates uniformly from rest at 2ms² for 5 seconds . calculate its average velocity in this time.
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Answer:
0.4
Explanation:
average velocity =d/t
2/5=0.4
0.4m
HELP ME PLEASE I need the answer now and I will give all my brain lists
Answers
Answer:
I'd say it's B
Sorry if I get you wrong-
A material that does not conduct heat very well
A
Expander
B
Radiation
C
Conductor
D
Insulator
Answers
Answer:
D
Explanation:
Insulator is like rubber, it cant physically hold heat well
A hair dryer is rated at 1.2kW. When it is plugged into a standard outlet and turned on, what is the current in the hair dryer?
Answers
Answer:
1200 watts at a standard 120v draws 10 amps