Thrust is force
Mass=2kgAcceleration due to gravity=g=9.8m/s^2Using Newtons Second law
[tex]\boxed{\sf Force=Mass\times Acceleration}[/tex]
[tex]\\ \qquad\quad\sf{:}\dashrightarrow Thrust=2(9.8)[/tex]
[tex]\\ \qquad\quad\sf{:}\dashrightarrow Thrust=19.6N[/tex]
We have that the the upthrust on a object immersed in water is
[tex]U=19.6N[/tex]
From the Question we are told that
mass= 2kg
Gravity g=9.8m/s^2
Generally the equation for the upthrust is mathematically given as
[tex]U=mg[/tex]
Therefore
[tex]U=2*9.8[/tex]
[tex]U=19.6N[/tex]
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Which of the following would cause the force of kinetic friction to increase?
A. A decrease in the normal force
B. An increase in us
C. A decrease in lk
D. An increase in the normal force
Answer:
Increase in μk
Explanation:
different ans set
A voltage of 120 volts is applied to a 200 Ω resistor. Calculate the current through the resistor.
Answer:
I = 0.6A
Explanation:
Ohm's Law
V = I*R
I = V/R
I = 120V/200ohms
I = 0.6A
Calculate the force of gravitation between two objects of masses 50 kg and 120 kg respectively, kept at a distance of 10 m from one another.
Answer:
Answer
F=G×
d
2
m×M
m = 50 kg
M = 120 kg
Distance, d = 10 m
G=6.7×10
−11
Nm
2
/kg
2
F=6.67×10
−11
×
10
2
50×120
F=6.67×60×10
−11
F=4.02×10
9
N
Answer:
=4.002×10-⁷
Explanation:
(6.67×10-¹¹ ×50×120)/10²
=4.002×10-⁷
Calculate the magnitude and direction of the current in this circuit.
Please help, I’ll like
Answer:
0.75 A ig.Hope it helps:))
any person for the job he applied Force moment or torque
Answer:
i think torque is the answer not confirmed
Trên một đoạn đường thẳng AC cho điểm B nằm giữa AC sao cho BC = 4AB . Tại thời điểm t = 0 xe thứ nhất chuyển động đều qua A với tốc độ v1 hướng về C, xe thứ hai chuyển động đều qua B với tốc độ v2 cùng hướng với xe thứ nhất. Đến thời điểm t = 1.5h hai xe gặp nhau tại C. Biết rằng quảng đường mỗi xe đi dược trong một giờ hơn kém nhau 10km. Tính v1, v2 và khoảng cách từ A đến C.
Answer:
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According to Hooke's law
(a) stress x strain = constant
(b) stress / strain = constant
(c) strain / stress = constant
(d) stress = strain
Answer:
According to Hook's law, we know,
strain/stress =Constant
Explanation: So, the ratio between stress and strain is always constant.
So, if stress is increased, then strain changes in that way so that this ratio always remains constant.
A 20 kg truck drives in a circle of radius 4 m at 10m/s. What causes
the circular motion?
A. Normal Force
B. Friction
C. Tension
D. Gravity
Answer:
Normal force
Explanation:
The force is centipetral forceCalculating :-
Mass=m=20kgRadius=r=4mVelocity=10m/s=vWe know
[tex]\boxed{\sf F_c=\dfrac{mv^2}{r}}[/tex]
[tex]\\ \sf\longmapsto F_c=\dfrac{20(10)^2}{4}[/tex]
[tex]\\ \sf\longmapsto F_c=\dfrac{20(100)}{4}[/tex]
[tex]\\ \sf\longmapsto F_c=\dfrac{2000}{4}[/tex]
[tex]\\ \sf\longmapsto F_c=500N[/tex]
. Calculate the momenturn of a bus of mass 2000 kg moving with a velocity of 20 m/s
We know
[tex]\boxed{\sf Momentum=Mass\times Velocity}[/tex]
[tex]\\ \sf\longmapsto Momentum=2000(20)[/tex]
[tex]\\ \sf\longmapsto Momentum=40000kgm/s[/tex]
A 20 kg truck drives in a circle of radius 4 m at 10m/s. What is the
centripetal force on the truck?
A. 500 N
B. 650 N
C. 350 N
D. 800 N
We know
[tex]\boxed{\sf F_c=\dfrac{mv^2}{r}}[/tex]
[tex]\\ \sf\longmapsto F_c=\dfrac{20(10)^2}{4}[/tex]
[tex]\\ \sf\longmapsto F_c=\dfrac{20(100)}{4}[/tex]
[tex]\\ \sf\longmapsto F_c=\dfrac{2000}{4}[/tex]
[tex]\\ \sf\longmapsto F_c=500N[/tex]
The centripetal force on the truck can be determined from the mass, velocity and the radius of the circular path. The centripetal force acting on the truck is 500 N. Hence, option A is correct.
What is centripetal force?Centripetal force is a type force acting on an object traveling through a circular path. The centripetal force is the rotational analogue of the linear force.
The centripetal force acting on an object is related to the mass, velocity and radius of the circular path is given by:
Fc = mv ²/r
Given that, mass of truck = 20 Kg
radius of circle = 4 m
velocity = 10 m/s
Then, centripetal force Fc = 20 kg × 10² m/s / 4 m = 500 N
Therefore, the centripetal force on the truck is 500 N.
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convert 12 kg into gram
Answer:
12000gram
Explanation:
1kg=1000gram
so, 12kg=12x1000
12kg=12000gram
Given amount=12kg
[tex]\boxed{\sf 1kg=1000g}[/tex]
[tex]\\ \sf\longmapsto 12kg=12(1000)[/tex]
[tex]\\ \sf\longmapsto 12kg=12000g[/tex]
what does a resistor in an electrical dp
Answer:
A resistor is a passive two-terminal electrical component that implements electrical resistance as a circuit element. In electronic circuits, resistors are used to reduce current flow, adjust signal levels, to divide voltages, bias active elements, and terminate transmission lines, among other uses.
Explanation:
Resistors are common elements of electrical networks and electronic circuits and are ubiquitous in electronic equipment. Practical resistors as discrete components can be composed of various compounds and forms. Resistors are also implemented within integrated circuits.
The electrical function of a resistor is specified by its resistance: common commercial resistors are manufactured over a range of more than nine orders of magnitude. The nominal value of the resistance falls within the manufacturing tolerance, indicated on the component.
Solve the following numerical problems. a) A load of 400N is lifted up by an effort of 100N. If load distance is 20cm, what will be the effort distance? (Ans: 80cm) b) Two boys, Shrijan having weight 600N and Shrijesh having weight 300N are playing see-saw. If Shrijan is sitting at 2m from fulcrum, where should Shrijesh sit from fulcrum to balance Shrijan?(Ans: 4m) c) A lever of length 1m has been used ttoko lift a load of 600N by applying an effort of 200N. If load is at 20cm from fulcrum, calculate mechanical advantage, velocity ratio and efficiency. (Ans: MA = 3, VR = 4, n=75%) d) Study the figure below and find the value of effort. (Ans: 120N) Muyn) 2.5m 600N 0.5m ? Science and Enyin
Answer:
given,
load = 400 N
effort = 100 N
load distance = 20 cm
we know that ,
E*Ed = L*Ld
=100 N* Ed = 400N * 20 cm
=100N * Ed = 8000N/cm
= Ed =( 8000N/cm ) / 100N
= Ed = 80 cm
b. soln.
given,
load = 600 N
load distance = 2 m
effort = 300 N
effort distance = ?
we know that ,
= E *Ed = L * Ld
= 300N * Ed = 600N * 2 m
= 300N * Ed = 1200N/m
=Ed =( 1200N/m ) / 300 N
= Ed = 4 m
C. soln.
given,
load = 600 N
load distance =20 cm
effort = 200 N
effort distance = ?
M.A = ?
V.R = ?
Efficiency = ?
we know that ,
= E *Ed = L *Ld
= 200N * Ed = 600 N * 20 cm
=200 N *Ed = 12000 N/cm
=Ed = ( 12000 N/cm) / 200 N
= Ed = 60 cm
Also,
M.A = load / effort
=600 N / 200 N
= 3
V.R = Ed/ Ld
= 60 cm / 20 cm
= 4
efficiency = ( M.A / V.R ) 100 %
= ( 3 / 4 ) 100%
= 75 %
d. soln.
given,
load = 600 N
load distance = 0.5 m
effort distance = 2.5 m
effort = ?
we know that ,
= E * Ed = L * Ld
= E * 2.5 m = 600 N * 0.5 m
= E * 2.5 m = 300 N / m
= E = ( 300 N / m ) / 2.5 m
= E = 120 N
Cómo puede contribuir el baloncesto a tu vida y al medio ambiente?
Ayudaaa porfaa
El baloncesto es un deporte muy completo, que puede beneficiar mi vida al mejorar mi salud mediante el ejercicio físico, a la vez que puede mejorar el medio ambiente a través de la protección de espacios abiertos para la práctica de este y otros deportes.
El baloncesto es un deporte inventado en 1891 por James Naismith en Estados Unidos. En el, dos equipos de cinco jugadores y siete suplentes cada uno competirán entre sí. El objetivo del juego es capturar la pelota y lanzarla a través de un aro de hierro - la canasta - y evitar que el oponente haga lo mismo.
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Please help me. I need this in a few hours.
Answer:
A) The population of prey is greater than that of predator
.............................
The deflection plates in an oscilloscope are 10 cm by 2 cm with a gap distance of 1 mm. A 100 volt potential difference is suddenly applied to the initially uncharged plates through a 1075 ohm resistor in series with the deflection plates. How long does it take for the potential difference between the deflection plates to reach 65 volts
Answer:
20 ns
Explanation:
Since the deflection plates are in series with the resistor, the deflection plates act as a capacitor.
So, the set-up is a series RC circuit.
The voltage across the deflection plates V =
[tex]V = V_{0}(1 - e^{-\frac{t}{RC} } )[/tex]
where V₀ = voltage applied = 100 V, R = resistance of resistor = 1075 Ω and C = capacitance of deflection plates and t = time to reach 65 V
The capacitance of the deflection plates C = ε₀A/d where ε₀ = permittivity of free space = 8.854 × 10⁻¹² F/m, A = area of deflection plates = 10 cm × 2 cm = 20 cm² = 20 × 10⁻⁴ m² and d = distance between deflection plates = 1 mm = 1 × 10⁻³ m.
So, C = ε₀A/d
C = 8.854 × 10⁻¹² F/m × 20 × 10⁻⁴ m²/1 × 10⁻³ m
C = 177.08 × 10⁻¹⁶ Fm/1 × 10⁻³ m
C = 177.08 × 10⁻¹³ F
C = 17.708 × 10⁻¹² F
Since we require the time it takes the capacitor to reach 65 Volts, V = 65 and we make t subject of the formula,
So, [tex]V = V_{0}(1 - e^{-\frac{t}{RC} } )[/tex]
[tex]\frac{V}{V_{0}} = (1 - e^{-\frac{t}{RC} } )\\e^{-\frac{t}{RC} } = 1 - \frac{V}{V_{0}}[/tex]
taking natural logarithm of both sides, we have
-t/RC = ㏑(1 - V/V₀)
t = -RC㏑(1 - V/V₀)
Substituting the values of the variables into the equation, we have
t = -RC㏑(1 - V/V₀)
t = -1075 Ω × 17.708 × 10⁻¹² F㏑(1 - 65 V/100 V)
t = -19036.1 × 10⁻¹² ΩF㏑(1 - 0.65)
t = -19036.1 × 10⁻¹² ΩF㏑(0.35)
t = -19036.1 × 10⁻¹² × -1.0498 s
t = 19984.5189 × 10⁻¹² s
t = 1.99845189 × 10⁻⁸ s
t = 19.99845189 × 10⁻⁹ s
t ≅ 20 × 10⁻⁹ s
t ≅ 20 ns
So, the time it takes the potential difference between the deflection plates to reach 65 V is 20 ns.
define one standard kg
Answer:
The mass of platinum iridium rod whose diameter and height are equal an kept at international bureau of weight and measurement in Paris of France is called as one standard kg.
A high voltage probe should always be used whenever you measure voltages near or above
A. 100 VAC or VDC
B. 500 VAC or VDC
C. 1000 VAC or VDC
D. 750 VAC or VDC
Answer:
C. 1000 VAC or VDC
Explanation:
step by step explanation
how many significant figures 216 m
Answer:
Three
Explanation:
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What distance will be traveled if you are going 0.120m/s for 30 min
Answer:
216
you have to change the meters per second to meters per minute, so you multiply .12 by 60 and get 7.2, then you multiply 7.2 meters per minute by 30 minutes and get 216
difference Between Newton's first law and third law of motion
Newton first law state that anything in motion or rest will remain in motion or in rest until an external force is applied
Newton third law of motion state that every action have equal and opposite reaction
Answer:
Newton's laws of motion relate an object's motion to the forces acting on it. In the first law, an object will not change its motion unless a force acts on it. ... In the third law, when two objects interact, they apply forces to each other of equal magnitude and opposite direction.
Explanation:
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Friction causes wastage of energy and hence increases fuel consumption.
Suggest different ways to reduce friction and promote responsible
consumption of fuel and energy.
Friction can be defined as a type of force that prevents two smooth surfaces from sliding together on each other. Friction is a strong force that opposes motion when two surfaces come in contact with each other.
The different methods/ways to reduce friction include;
- Application of lubricant to surfaces
- Streamlined bodies; this goes a long way in preventing friction between two bodies.
- Decrease in weight; reducing the amount of weight on a substance can also help to reduce friction
- Applying wheels to objects that move/roll on the ground.
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A force of 150N at an angle of 60 degree to the horizontal to pull a box through a distance of 50m calculate the work done
[tex]\boxed{\sf W=Fscos\Theta}[/tex]
[tex]\\ \sf\longmapsto W=150(50)cos 60[/tex]
[tex]\\ \sf\longmapsto W=7500\times \dfrac{1}{2}[/tex]
[tex]\\ \sf\longmapsto W=3750J[/tex]
differentiate between Physical and chemical changes with example
please help me !
Answer:
Physical change is a temporary change. A chemical change is a permanent change
examples of physical change are freezing of water, melting of wax, boiling of water, etc. A few examples of chemical change are digestion of food, burning of coal, rusting, etc.
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kaleidoscope works on the principal of
Answer:
Multiple reflections.Explanation:
Kaleidoscopes work on the principle of multiple reflections.
The mirrors reflect the images of objects inside, creating a symmetrical pattern.
When you look at your reflection in one mirror, you see light that has come from your face and bounced off the mirror.
Part B After producing electricity in many different ways, describe what causes electricity to flow in the coil? In your response, describe the types of forces acting on the electrons and how they result in movement.
Explanation:
If a coil of wire is placed in a changing magnetic field, a current will be induced in the wire. ... A changing magnetic field through a coil of wire therefore must induce an emf in the coil which in turn causes current to flow.
Due to the flow of the current run, the coil magnetic field is produced. Magnetic fields result in magnetic force.
What is electric force?The electric force between the two charges is directly propotional to the product of the charge and inversly propotional to the square of the distance between them.
A current will be generated in a wire coil if it is put in a changing magnetic field. As a result, a changing magnetic field through a coil of wire must create an emf in the coil, causing the current to flow.
A current is induced in a coil of wire when it is put in a changing magnetic field. Something generates an electric field that drives the charges around the wire, causing the current to flow.
Hence due to the flow of the current in the coil magnetic field is produced.
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How many inches are in 300 meters? Using the method of dimensional analysis
A glass rod acquires charge by rubbing silk cloth. The charge on the glass is due to:
(a) Friction
(b) Conduction
(c) Induction
(d) Radiation
Answer:
(a)Friction
Explanation:
It is due to friction as you are rubbing the glass rod with silk cloth
as friction occurs when 2 surfaces are rubbed against each other
Therefore it is charging by friction
What does vitamin c do for our body?
Answer:
necessary for the growth, development and repair of all body tissues. it's involved in many body functions, including formation of collagen, absorption of iron, the proper functioning of the immune system, wound healing, and the maintenance of cartilage, bones, and teeth.
Explanation:
Answer:
Vitamin C act as antioxidant which protect our cell from damaging caused by radicals.
