A. The magnitude is 9.47N
B. The direction of the resultant force is 90°
We use vectors in answering this question.
F₁ = 2N 45°
F₂ = 5N 90°
F₃ = 4N. 135°
For the magnitude, we use vector addition twice
Consider forces F₁ and F₃
Notice that F₁ and F₃ are at right angles to each otherUsing vector summation, the net forces of F₁ and F₃ say F₀ is the square root of the summation of the squares of F₁ and F₃F₀ = 4.47N
Since F₁ and F₃ are at 45° and 135° respectively, their net force F₀ is at 90°, along the line of F₂
Fnet = F₀ + F₂ = 4.47 + 5 = 9.47N
A. The magnitude is 9.47N
B. The direction of the resultant force is 90°
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Which of the following consists of photovoltaic cells?
1. Solar panels
2. Rube Goldberg device
3. Solar oven
4. Electric generator
The image shows positivle and negative charged particles bouncing around. Which state of matter is most likely represented in the image?
Answer:
Gas Solid Liquid Plasma
Explanation:
Answer:
plasma
Explanation:
plasma has charged particles and ions and electrons floating around
Which of these is
considered "work"
according to
science?
A. pushing against a wall
B. babysitting
C. kicking a soccer ball
Answer:c
Explanation:work is force x distance. The wall doesn’t move any distance in A so that’s not work. B involves tasks that do work but I don’t think this is what they’re going for. For a short instance while kicking a ball, your foot is applying a force to the ball which moves a distance before following its own trajectory after contact with your foot. Because the contact has a short duration and isn’t instantaneous, this is work
Select the correct answer.
Jack lives in a society where he has almost no political power. Governmental institutions handle all political, social, and economic affairs.
Which political system is this?
OA. totalitarianism
B. monarchism
C. democracy
D. chiefdom
Answer:A or totalitarianism
Explanation: Totalitarianism is an authoritarian form of government in which the ruling party recognizes no limitations whatsoever on its power, including in its citizens' lives or rights
Some characteristics of totalitarianism:
Rule by a single party.
Total control of the military.
Total control over means of communication (such as newspapers, propaganda, etc…)
Police control with the use of terror as a control tactic.
Control of the economy.
Which moon shows evidence of rainfall and erosion by some liquid substance?.
Answer:
Titan.It is the largest moon of Saturn
NEED ANSWER ASAP!!!! Tony pulls a luggage cart at an angle of 30° to the horizontal. The luggage cart has a mass of 35 kg, and he pulls with a force of 75 N.
a. What is the normal force on the luggage cart?
b. What force would Tony need to apply at a 30° angle to pull the luggage cart completely off the ground?
c. How does your answer in part (b) change as the angle increases?
a)The normal force on the luggage cart will be 305.85 N
b)The force would Tony needs to apply at a 30° angle to pull the luggage cart willl be 375 N.
What is the friction force?It is a type of opposition force acting on the surface of the body that tries to oppose the motion of the body. its unit is Newton (N).
it is defined as the product of the coefficient of friction and normal reaction.
On resolving the given force and acceleration. Mathematically aion in the different components and balancing the equation gets.Components in the x-direction.
Given data;
The angle of pulling with horizontal. = 30°
Mass of luggage cart=35 kg
Pulling force= 75 N
The force in the y-direction;
N+Fsin30° = mg
N+75 sin 30° = 35 × 9.81
N=305.85 N
The force would Tony need to apply at a 30° angle to pull the luggage cart completely off the ground;
N-mg=Fsin30
Fsin30=75 sin 30
Fsin30=375 N
Hence the normal force on the luggage cart and force would Tony need to apply at a 30° angle to pull the luggage cart willl be 305.85 N and 375 N.
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26.6 00
Fig. E26.6 both meters are ide-
alized, the battery has no appre-
ciable internal resistance, and the
ammeter reads 1.15 A. (a) What
does the voltmeter read? (b) What
is the emf & of the battery?
26.7 For the circuit shown
For the circuit shown in Figure E26.6
V
45.0 Ω
25.0 Ω
ww(A)
|15.0 Ω
www
|15.0 Ω
W
www
ww
4+
35.0 = ?
10.0 Ω
a. The voltmeter reads 0.053 volts
b. The electromotive force, emf of the battery is 0. 106 volts
How to determine the voltmeter reading
a. Given the current = 1. 15A
Voltmeter reads the voltage = V
Resistance could be gotten from the diagram = R
V = IR
To find the resistance from the structure
First, find the resistance in parallel
Resistance in parallel = 1/R1 = 1/R2 + 1/R3 = 1/25 + 1/15 + 1/15 = 0. 17 Ohms
Now, find the resistance in series
Resistance in series = R1 + R2 + R3 = 45 + 0. 17 + 10 = 55. 17 Ohms
Finally, the resistance in parallel = 1/35 + 1/55. 17 = 0. 028 + 0. 018 = 0. 046 Ohms
Substitute values into the equation
V = IR
V = 1. 15 * 0. 046
V = 0. 053 Volts
b. To find the Emf, use the formula
Emf = V + Ir
Substitute the values into the formula
Emf = 0. 053 + 1.15 * 0.046
Emf = 0. 053 + 0. 0529
Emf = 0. 106 volts
Therefore, the voltmeter reads 0.053 volts and the electromotive force of the battery us 0. 106 volts
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How would the number 13,900 be written using scientific notation?
a. 13.9 x 104
C.
b. 1.39 x 104
1.39 x 10³
d. 1.39 x 105
Which one is it??
Answer:
um d. but I am guessing this ans
describe in your own words the conditions established by forward- and reverse-bias conditions on a pâ€""n junction diode and how the resulting current is affected.
The conditions established by forward- and reverse-bias conditions on a P-N junction diode are: For forwarding bias, the current flows easily without opposition, this causes more current to pass, For reversed bias, the current flow is restricted and this causes less amount of current to pass.
Meaning of a Forward and reversed biasA forward bias is a state attained by a diode as a result of its positive terminal that is connected to the positive part of a circuit and its negative terminal connected to the negative part of the circuit.
A reversed bias is a state attained by a diode as a result of its positive terminal that is connected to the negative part of a circuit and its negative terminal connected to the positive part of the circuit.
In conclusion, The conditions established by forward- and reverse-bias conditions on a P-N junction diode are: For forwarding bias, the current flows easily without opposition, which causes more current to pass, For reversed bias, the current flow is restricted and this causes less amount of current to pass.
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The conditions established by forward- and rear- bias conditions on a P- N junction diode are For encouraging bias, the current flows fluently without opposition, this causes further current to pass, For reversed bias, the current inflow is confined and this causes lower quantum of current to pass.
Meaning of a Forward and reversed bias-
A forward bias is a state attained by a diode as a result of its positive outstation that's connected to the positive part of a circuit and its negative terminal connected to the negative part of the circuit.A reversed bias is a state attained by a diode as a result of its positive outstation that's connected to the negative part of a circuit and its negative terminal connected to the positive part of the circuit.
In conclusion, The conditions established by forward- and rear- bias conditions on a P- N junction diode are For encouraging bias, the current flows fluently without opposition, which causes further current to pass, For reversed bias, the current inflow is confined and this causes lower quantum of current to pass.
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Derive that efficiency is the ratio of output and input work.
Answer:
The efficiency of a simple machine is defined as the ratio of useful work done by a machine (output work) to the total work put into the machine (input work). For ideal or perfect machine, work output is equal to the work input.
Explanation:
Hope it Helps!!!
how do the interiors of jupiter and saturn differ? (select all that apply.)
The interior part of Jupiter and Saturn are different from each other due to difference of core and magnetic field.
How do the interiors of Jupiter and Saturn differ?The interiors of Jupiter and Saturn differ from one another because Jupiter has a larger metallic hydrogen core as compared to Saturn. It has stronger magnetic field as compared to Saturn.
So we can conclude that the interior part of Jupiter and Saturn are different from each other due to difference of core and magnetic field.
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A glider with a mass of 2 kg is moving rightward at 1 m/s. A second glider, with a mass of 3 kg, is also moving rightward, at 5 m/s. After the two gliders collide, the first glider is moving rightward at 2 m/s. What is the velocity of the second glider after the collision
The velocity of the second glider after the collision is 4.33 m/s rightward.
Velocity of the second glider after the collision
Apply the principle of conservation of linear momentum;
m₁u₁ + m₂u₂ = m₁v₁ + m₂v₂
where;
m₁ is mass of first gliderm₂ is mass of second glider u₁ is initial velocity of first glideru₂ is initial velocity of second gliderv is the final velocity of the gliders(2)(1) + (3)(5) = (2)(2) + 3v₂
17 = 4 + 3v₂
3v₂ = 17 - 4
3v₂ = 13
v₂ = 13/3
v₂ = 4.33 m/s
Thus, the velocity of the second glider after the collision is 4.33 m/s rightward.
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Use wave equation calculate the speed of sound in the air if frequency of 110 hz has a wave length of 3 m
Transparent or translucent materials
are used to make
A stop signs
B suitcases
C color filters
D toothbrushes
Answer:
C
Explanation:
you need to be able to see through a colour filter, which means youd need transparent or translucent
Transparent materials passes light and they reflect also. The color filters are made by transparent or translucent materials. Thus option c is correct.
What is transparency?The ability of a material to pass light through it is called transparency. Some transparent materials can reflect the light. For example mirror, glasses etc. The materials which passes light but are not transparent is called translucent materials.
The material which does not pass light inside is called opaque. Wood, plastics etc. are opaque materials. Transparent covers, glasses make their inside visible.
Colour filters are made by transparent or translucent materials. They are used to filter or choose a particular colour from a group of reflected lights.
Color filters are used in spectrometers and other optical devices. They filter the incoming wavelengths to select the desired one. Hence, option c is correct.
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the question is confusing
Alpha particles have highest mass.
Alpha particles are most ionising.
Gamma particles are the most penetrating.
Beta particles are negatively charged.
Gamma particles have the highest speed.
Comparing the three types of ionizing radiation-alpha particles have the greatest mass. Alpha particles have approx 4 times the mass of a proton or neutron and 8,000 times the mass of a beta particle. Ionising power of alpha particle is very high due to double positive charge, large mass as compared to a beta particle. Alpha particles can cause multiple ionisations within a very small distance. Beta radiation is more penetrating than alpha radiation. beta radiation can pass through the skin, but it is absorbed by a few cm of tissue of the body or a few mm of aluminum. Gamma radiation is the most penetrating of the three radiations. Alpha particles are positively charged, while beta particles are negatively charged, and gamma radiation is electrically neutral. Gamma rays are similar to visible light but they have higher energy. Gamma rays are emitted along with alpha or beta particles during radioactive decay.learn more about gamma rays here:
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what is true about solar system densities
The statement that is true about solar system densities is The denser planets lie closer to the Sun while the farther one planets from the sun have lower densities.
What is solar system?Solar system comprises of the the planets, moon, stars, comets , smaller bodies and how they orbit around the sun.
Therefore, The statement that is true about solar system densities is The denser planets lie closer to the Sun.
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The length of a piece of tissue is 42 meters. How big is 3/7 of this piece?
hi brainly user! ૮₍ ˃ ⤙ ˂ ₎ა
⊱┈────────────────────────┈⊰
[tex]\large \bold {ANSWER}[/tex]
[tex]\large \boxed { \large \sf \green{18}}[/tex]3/7 of the fabric equals 18.
[tex]\large \bold {SOLUTION}[/tex]
To find the solution to your task, we will have to find 3/7 of 42, that is. How much is 3/7 of 42?
So, to find the value we must do the following way, multiply the value of the length of the fabric 42, by the numerator of the fraction 3 and divide by the denominator 7, See:
[tex]\begin{gathered}\Large\begin{array}{c}\tt\dfrac{3}{7}\:in\: 42\\\\ \tt 42\cdot 3=126\\\\ \tt 126\div 7=\boxed{\boxed{\tt 18}}\end{array}\end{gathered}[/tex]
Hence, 3/7 of the fabric equals 18.
this stationary wave is what we call the first harmonic of the first normal mode of the system. in units of l, the length of the wire, what is λ1, the wavelength of the first harmonic?
First harmonic of a closed pipe is determined as velocity, v, to four times length (4L), F₀ v/4L.
First harmonic of a closed pipe
The first harmonic of a closed pipe is the fundamental frequency of the closed of the closed pipe.
L = λ/4
where;
L is the length of the pipeλ is the wavelength of soundλ = 4L
But, v = F₀λ
v = F₀(4L)
F₀ = v/4L
where;
F₀ is the first harmonicv is speed of soundThus, first harmonic of a closed pipe is determined as velocity, v, to four times length (4L), F₀ v/4L.
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Select the definition that best describes the term “ultimate tensile strength.”
Ultimate tensile strength is the maximum stress that a material can withstand just before fracture.
What is stress?
Stress is defined as the force acting per unit area. It is denoted by Sigma(σ)
When a body is undergoing stretch by applying a pull force, it stretches more and more until it reaches its elastic limit. A point comes when the body no more stretches and breaks or fractures at bottle neck formation. This strength of any material is known as Ultimate breaking Stress or Ultimate tensile strength.
Thus, Ultimate tensile strength is the maximum stress that a material can withstand just before fracture.
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What is the term for producing a current by moving a wire through a magnetic field?.
a truck of mass 1500kg is moving with a constant speed of 10m/s . what is the translation kinetic energy of the truck?
The translational kinetic energy of the truck is 75000 Joules (J). The correct answer is 75000 Joules (J).
Given information:
Mass of the truck (m) = 1500 kg
Speed of the truck (v) = 10 m/s
The translational kinetic energy (KE) of an object is given by the formula:
KE = (1/2) × m × v²
where:
KE is the translational kinetic energy,
m is the mass of the object,
v is the speed of the object.
The translational kinetic energy of the truck:
KE = (1/2) × 1500 × (10)₂
KE = (1/2) × 1500 × 100
KE = 75000
KE = 75000 Joules (J)
So, the translational kinetic energy of the truck is 75000 Joules (J).
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find the energy u of the capacitor in terms of c and q by using the definition of capacitance and the formula for the energy in a capacitor.
The energy stored in a capacitor is determined as ¹/₂Q²/C.
Energy stored in a capacitorThe energy stored in a capacitor is determined from the following formulas as shown below;
U = ¹/₂Q²/C
Where;
Q is the chargeC is capacitanceU is energy stored.Thus, the energy stored in a capacitor is determined as ¹/₂Q²/C.
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which group on the periodic table wants to gain 2 electrons?
Answer:
Periodic
Explanation:
The groups in the periodic table that want to gain electrons are groups; 15, 16 and 17. The members of these groups are mostly nonmetals.
Which observations correctly describe the second law of thermodynamics? check all that apply.
thermal energy that is not used to do work is often released to the surroundings.
thermal energy flows from a cooler object to a warmer object.
thermal energy flows from a warmer object to a cooler object.
thermal energy is released as unusable energy by a heat engine, which is never 100 percent efficient.
thermal energy flows when two objects in contact have a temperature difference.
answers: 1,3,4,5
Answer:
I would agree with the answers 1, 3, 4, 5
Obviously energy will not spontaneously flow from a cooler object to a warmer object
Answer:
A. Thermal energy that is not used to do work is often released to the surroundings.
C. Thermal energy flows from a warmer object to a cooler object.
D. Thermal energy is released as unusable energy by a heat engine, which is never 100 percent efficient.
E. Thermal energy flows when two objects in contact have a temperature difference.
Explanation:
Got it right on edge 23
With a burst of speed, Kevin swims one 25.0-m stretch in 9.22 s. What is Kevin's average speed over those 25 m
If Kevin swims one 25.0-m stretch in 9.22 seconds, his average speed is approximately 2.71m/s.
What is Kevin's average speed over those 25 m?Speed is expressed as distance over time.
Speed = Distance / time
Given the data in the question
Distance = 25.0mTime elapsed = 9.22sAverage speed = ?Average speed = 25.0m / 9.22s
Average speed = 2.71m/s
If Kevin swims one 25.0-m stretch in 9.22 seconds, his average speed is approximately 2.71m/s.
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write the function of force
Answer:
Force can make a body that is at rest to move. It can stop a moving body or slow it down. It can accelerate the speed of a moving body. It can also change the direction of a moving body along with its shape and size.
Against the park ranger's advice, a visitor at a national park throws a stone horizontally off the edge of a 83 m high cliff and it lands a distance of 93 m from the edge of the cliff, narrowly missing a visitor below.
What was the initial horizontal velocity of the rock, in m/s? You can round your answer to the hundredths place and use g ≈ 10 m/s2.
hello,help me with this out please i need it hurry but please ensure your answer is correct..I attach here with my question.
Topic:Forces in equilibrium.
Answer:
.409 N
Explanation:
For this to balance, the moments around the fulcrum must sum to zero.
On the left you have .21 ( is that down? I will assume it is)
Counterclockwise moments :
.21 * 40 + 1.0 * 20
Clockwise moments :
.5 * 20 + F * 45
these moments must equal each other
.21*40 + 1 *20 = .5 * 20 + F * 45
F = .409 N
Questions: 1. A table of weight 500N has four legs covering a total area of 0.5m². Calculate the pressure applied by the table on the ground
2. A man with a mass of 50kg, is standing on the ground. His two feet cover an area of 0.01m². calculate the pressure exerted by his two feet
3. An elephant has a weight of 40000N and her feet cover a total area of 0.5m². A woman weighs 600N and area of her heels in contact with the ground is 0.0075m². Who exerts the greatest pressure on the ground?
Answer:
shown below
Explanation:
1) P = F/A
P = 500 / 0.5
P = 1000N/m²
2) W = mg
W = 50 x 9.8
W = 490
P = F/A
P = 490 / 0.01
P = 49000N/m²
3) P = F/A
For E:
P = 40000 / 0.5
P = 80000N/m²
For W:
P = 600 / 0.0075
P = 80000N/m²
They're exerting the same amount of pressure on the ground
The distance between slits on a diffraction grating is 0.60
How large is the path difference?
mm, and one of the angles of diffraction is 0.30°. The
light forms a second-order bright band.
O 1047 nm
• 1571 nm
© 3142 nm
6284 nm
The path difference is 1.57 × 10⁻⁶ m
Distance is the amount of space between things. From distance, it is the hard to tell if someone's wearing the a vampire costume abd just a chic black outfit.
For constructive interference thai is formation of bright fringe through a diffraction grating is given by:
d sin θ = n λ
here, d is the distance between slits.
θ is the angle of diffraction
n is the order of fringe
and λ is the path difference.
λ = (d sin θ)/ n = (0.60 *10 ⁻³m) (sin 0.30°) ÷ 2 = 1.57 * 10⁻⁶ m
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Answer:
C is the answer
Explanation:
