questionwhat is the correct definition of power?responsespower is the ability to do work.power is the ability to do work.power is the product of force applied that displaces an object.power is the product of force applied that displaces an object.power is the rate at which work is done.power is the rate at which work is done.power is the amount of work that is done.
Answers
Answer:
Power is the rate of doing work
P = W / t (work / time) or
P = F * d / t since force * distance = work
Related Questions
Explain which movement Jamal should make (which car and which point), and why that movement will result in the largest increase in potential energy. Describe the magnetic force that will act on the vehicle he moves.
Answers
Because potential energy increases with separation distance, Jamal should move the toy car with the greatest separation distance.
What do you mean by potential energy ?The term potential energy is defined as stored energy that depends upon the relative position of various parts of a system. Potential energy is energy that cannot be transfer to kinetic energy. It has the capacity to do work but is not presently doing so.
Because magnetic force is inversely proportional to the separating distance between the cars, the magnetic force acting on the vehicles will decrease as he moves the cars away from each other.
Thus, potential energy increases with separation distance, Jamal should move the toy car with the greatest separation distance.
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A sprinter leaves the starting blocks with an acceleration of 3.2 m/s2. What is the sprinter’s speed 5 seconds later? If the sprinter is 68 kg, with what force will the sprinter be accelerating
Answers
Answer:
46
Explanation:
Answer:
Refer the above attachment
Particle q1 has a charge of 2.7 μc and a velocity of 773 m/s. if it experiences a magnetic force of 5.75 × 10–3 n, what is the strength of the magnetic field? t in the same magnetic field, particle q2 has a charge of 42.0 μc and a velocity of 1.21 × 103 m/s. what is the magnitude of the magnetic force exerted on particle 2? n
Answers
1)The strength of the magnetic field for particle 1 will be 2.8 T.
2)The magnitude of the magnetic force exerted on the particle will be 0.12 N.
What is a magnetic field?It is the type of field where the magnetic force is obtained. With the help of a magnetic field. The magnetic force is obtained it is the field felt around a moving electric charge.
The given data in the problem is;
q₁ has a charge = 2.7 μc
v₁ is the velocity of particle 1 = 1 773 m/s.
F is magnetic force = 5.75 × 10–3 n,
q₂ has a charge of 42.0 μc
v₂ is the velocity of 1.21 × 103 m/s.
\(\rm F_{B2}\) is the magnitude of the magnetic force exerted on particle 2=?
The megnetic force for case 1 is found as;
\(\rm F_{B1}= qvB SIN \alpha_1 \\\\ 5.75 \times 10^{-3} =2.7 \times 10^{-6}\times 773 \times B sin 90^0 \\\\ B=\frac{5.75 \times 10^{-3}}{2.7 \times 10^{-6} \timesd 773 \times sin 90^0} \\\\ B=2.8 \ T\)
The megnetic force for case 2 is found as;
\(\rm F_{B2} = q_2v_2bsin \alpha_2 \\\\ 42\times 10^{-6} \times 1.21 \times 10^3 \times 2.8 \times sin 55^0 \\\\ F_{B2}=0.12 T\)
Hence the value of the megnetic force exerted on particle 2 will be 0.00122 T.
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Answer:
last one and second one
Explanation:
Particle q1 has a charge of 2.7 μC and a velocity of 773 m/s. If it experiences a magnetic force of 5.75 × 10–3 N, what is the strength of the magnetic field?
2.8
T
In the same magnetic field, particle q2 has a charge of 42.0 μC and a velocity of 1.21 × 103 m/s. What is the magnitude of the magnetic force exerted on particle 2?
0.12
N
Which element on the periodic table fights dandruff, directs drivers, and makes copies of your homework?
Answers
Answer:
Talc is the known mineral
There are _ molecules of air at higher elevations
Answers
Answer:
At higher elevations, there are fewer air molecules above a given surface than a similar surface at lower levels. For example, there are fewer molecules above the 50 km surface than are found above the 12 km surface, which is why the pressure is less at 50 km.
Explanation:
2. The ability to keep
upright posture while standing or moving
Answers
Hope this is helpful
What is the specific heat capacity of a material if 2000 J of heat energy can raise the temperature of 10 g of it by 140°C?
Answers
Answer:
Specific heat capacity, = 1.43 J/g°C
Explanation:
Given the following data;
Mass = 10 g
Change in temperature = 140°C
Quantity of heat = 2000 J
To find the specific heat capacity;
Heat capacity is given by the formula;
\( Q = mcdt\)
Where;
Q represents the heat capacity or quantity of heat. m represents the mass of an object. c represents the specific heat capacity of water. dt represents the change in temperature.Making c the subject of formula, we have;
\( c = \frac {Q}{mdt} \)
Substituting into the equation, we have;
\( c = \frac {2000}{10*140} \)
\( c = \frac {2000}{1400} \)
Specific heat capacity, = 1.43 J/g°C
Using the Skygazer's Almanac for 2022 at 40 degrees.
What day will Venus and Saturn be in opposite parts of the sky
this year?
Answers
According to the Skygazer's Almanac for 2022 at 40 degrees, Venus and Saturn will be in opposite parts of the sky on December 17, 2022.
The Skygazer's Almanac provides astronomical information for a specific location and year. In this case, at a latitude of 40 degrees, the almanac indicates that Venus and Saturn will be in opposite parts of the sky on December 17, 2022. This means that Venus and Saturn will appear at opposite sides of the celestial sphere as observed from Earth. However, it's important to note that the almanac's predictions are approximate and can be influenced by various factors, including atmospheric conditions and the observer's specific location. To obtain the most accurate and up-to-date information, it is recommended to consult more recent astronomical sources or use specialized software that can provide precise positions and dates for celestial events.
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Two parallel plates of area 7.34 x 10^-4 m^2 have 5.83 x 10^-8 C of charge placed on them. A 6.62 x 10^-6 C charge q1 is placed between the plates. What is the magnitude of the electric force on q1? Hint: How is force related to the field? (Unit = N)
Answers
Answer:
* if the two plates have the same charge sign F_net = 0
*if one plate is positive and the other is negative F_net = 59.4 N
Explanation:
The electric field created by a parallel plate is
E = \(\frac { \sigma }{2 \epsilon_o }\)
where sigma is the charge density
σ = Q / A
we substitute
E = \(\frac{Q}{A \ 2 \epsilon_o }\)
E = \(\frac{ 5.83 \ 10^{-8} }{7.34 \ 10^{-4}\ 2 \ 8.5 \ 10^{-12} }\)
E = 4.487 10⁶ N / C
the electric force is
F = E / q
in this force it is a vector, so if the charges are of the same sign they repel and if they are of the opposite sign they attract. In this case, the test load is between the two plates that have the same load sign, so the forces are in the opposite direction.
* if the two plates have the same charge sign
F_net = F₁ - F₂
F_net = q (E₁ -E₂)
since the electric field does not depend on the distance
E₁ = E₂
in consecuense
F_net = 0
In a more interesting case
*if one plate is positive and the other is negative
F_net = F₁ + F₂
F_net = q (E₁ + E₂) = 2 q E₁
F_net = 2 6.62 10⁻⁶ 4.487 10⁶
F_net = 59.4 N
net force goes from positive to negative plate
Answer:
59.4 N
Explanation:
acellus
can someone please help me A wave’s velocity is 120 m/sec with a frequency of 6 Hz. What is its wavelength?
Answers
Answer:
by using formula,
wavelength= velocity/frequency
= 120/6
= 20 meter
Ans: 20 meter
Answer:
wavelength= velocity
= 120/6= 20 meter
Explanation:
Find the distance in parsecs to these three stars. Star: Bade
Apparent Magnitude (m) = 4
Absolute Magnitude (M) = 4 Step 1: Work out the fraction
(m-M)/5 = ( - )/5 = Step 2: Take the "anti-log" 10^x(step 1 number) = 10^x ( ______ ) = _____
Step 3: Multiply by 10
D = 10* (step2 number) = 10*( ____ ) = _____ pc
Distance to Bade = ____pc Star: Ceriero Apparent Magnitude (m) = 0
Absolute Magnitude (M) = 2 Distance to Ceriero = _____pc
Star: Darnan Apparent Magnitude (m) = 0 Absolute Magnitude (M) = 0 Distance to Darnan = _____ pc
Based on the above, what is the distance to any star whose apparent magnitude is the same as its absolute magnitude?
Answers
Answer:
For any star whose apparent magnitude is the same as its absolute magnitude, the distance to the star would be 10 parsecs.
Explanation:
When the apparent magnitude (m) is equal to the absolute magnitude (M) of a star, the distance to the star can be determined as follows:
Step 1: Work out the fraction: (m - M) / 5 = (0 - 0) / 5 = 0/5 = 0
Step 2: Take the "anti-log": 10^(x) = 10^(0) = 1
Step 3: Multiply by 10: D = 10 * (step 2 number) = 10 * 1 = 10 pc
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When an alternating current circuit supplies power to a ? load, the circuit voltage and current are in-phase with each other. this is also known as unity power factor.
Answers
a car accelerates from rest to 14 m/s in 5 seconds on a horizontal road under perfect conditions. if the mass of the car is 850 kg, approximately how much power must be supplied to the wheels of the car to obtain this acceleration?
Answers
The power required to accelerate the car from rest to 14 m/s in 5 seconds is approximately 9520 watts.
To calculate the power required, we can use the formula: power = force x velocity. In this case, the force can be calculated using Newton's second law, which states that force equals mass times acceleration. The acceleration of the car is given as 14 m/s divided by 5 seconds, which is 2.8 m/s^2. So the force required to accelerate the car is 850 kg times 2.8 m/s^2, which is 2380 newtons.
Next, we need to determine the velocity at which the power needs to be calculated. The average velocity during the acceleration period can be found by dividing the final velocity (14 m/s) by 2, since the car starts from rest. So the average velocity is 7 m/s.
Finally, we can substitute the force and velocity values into the power formula: power = 2380 newtons times 7 m/s, which gives us 16,660 watts. However, this is the power required to accelerate the car to its final velocity instantaneously.
Since the acceleration occurs over a period of 5 seconds, we need to divide the power by 5 to get the average power required. Therefore, the power supplied to the wheels of the car to obtain this acceleration is approximately 9520 watts.
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Who was known for being a pilot and an astronaut that walked on the moon?.
Answers
Answer:
Neil Armstrong was the astronaut
Simple pendulum takes 0.01 s to reach the maximum displacement from the equilibrium position, so it's frequency equals.......
a)20 HZ
b)25 HZ
c)50 HZ
c)100 HZ
Answers
Simple pendulum takes 0.01 s to reach the maximum displacement from the equilibrium position, so it's frequency equals to 100 Hz
The time period of a simple pendulum: It is defined as the time taken by the pendulum to finish one full oscillation and is denoted by “T”. The amplitude of simple pendulum: It is defined as the distance travelled by the pendulum from the equilibrium position to one side.
The frequency of the pendulum defines how many times the pendulum moves back and forth in a specific period of time
time period of simple pendulum = 1 / frequency
given
time period = 0.01 second
frequency = 1 / 0.01
= 100 Hz
correct answer will be d) 100 HZ
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I'm looking for help factoring gravity into centripetal force equations, I know how to do ones without gravity just fine.
Answers
Step 1;
Given,
The mass of the person, m=57.0 kg
The radius of the track, R=42.7 m
The normal force acting on the person, N=995 N
Step 2:
The centripetal force required for the person is provided by the sum of the difference in the normal force and the weight of the person.
Thus the centripetal force on the person is given by,
\(F_c=\frac{mv^2}{R}=N-mg\)Where v is the speed with which the car and the person are moving and g is the acceleration due to gravity.
On rearranging the above equation,
\(v=\sqrt[]{\frac{R}{m}(N-mg)}\)Step 3:
On substituting the known values in the above equation,
\(\begin{gathered} v=\sqrt[]{\frac{42.7}{57.0}\times(995-57.0\times9.8)} \\ =18.08\text{ m/s} \end{gathered}\)Thus the velocity of the car is 18.08 m/s
Question 2 2.1 Using the Maxwell-Boltzmann function, show that the average speed of molecules is given by Vav - 8RT TM 2KT (10) 16000 molecules and each has a mass of 1.0 x 10-26
Answers
The average speed of molecules, Vav, is given by Vav = √(8RT / (πM)), where R is the gas constant, T is the temperature, and M is the molar mass of the molecules.
The Maxwell-Boltzmann distribution describes the distribution of speeds of molecules in a gas at a given temperature. The average speed, Vav, can be calculated by integrating the Maxwell-Boltzmann distribution over all possible speeds and finding the mean value.
Using the equation Vav = √(8RT / (πM)), we can determine the average speed of molecules.
Here,
R is the gas constant,
T is the temperature,
M is the molar mass of the molecules.
In this specific case, the number of molecules is given as 16000, and each molecule has a mass of 1.0 x 10^-26.
Substituting the values into the equation, with R = 8.314 J/(mol·K), T = 273 K, and M = 1.0 × 10^(-26) kg, we have:
Vav = √((8 × 8.314 J/(mol·K) × 273 K) / (π × 1.0 × 10^(-26) kg))
The average speed is an essential parameter in understanding the behavior and characteristics of gas molecules at a given temperature.
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1. A wave can be described as (2 points)
Answers
Answer:
Well,
Explanation:
In a wave, energy is transported without the transport of water. Basically, a wave can be described as a disturbance that travels through a medium, transporting energy from one location to another location without transporting matter.
MORE POINTS, BRAINLIEST!!!
Explain what an electrical current is, and describe the parts of a circuit.
Answers
Answer: An electric current is a stream of charged particles, such as electrons or ions, moving through an electrical conductor or space.
Explanation: The parts of a circut bit can easily be found online, but heres a pic i found.
Children on the autism spectrum are at risk for nutritional deficiencies because?
Answers
Explanation: Research highlights the individuals with ASDS are nutritionally vulnerable because they exhibit a selective or pick eating pattern and sensory sensitivity that predisposes them to restricted intakes.
I hope this helps!
A loudspeaker of mass 25.0 kg is suspended a distance of = 2.20m below the ceiling by two cables that make equal angles with the ceiling. Each cable has a length of = 3.90 .m What is the tension in each of the cables?
Answers
After considering all the given data we come to the conclusion that the tension in each cable is 122.6 N
The tension in each of the cables can be evaluated applying the formula
T = mg
Here,
T = tension in the cable,
m = mass of the object
g = acceleration due to gravity.
For the given case, the mass of the loudspeaker is 25.0 kg and g is approximately 9.81 m/s².
Since each cable makes equal angles with the ceiling, we can consider that each cable carries half of the weight of the loudspeaker.
Hence, we can evaluate the tension in each cable as follows:
T = (1/2)mg
T = (1/2)(25.0 kg)(9.81 m/s²)
T = 122.6 N
Therefore, the tension in each of the cables is approximately 122.6 N.
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a space shuttle travels in orbit at 21,000 km/hr. how far will it travel in 5 hr
Answers
Answer:
Explanation:
distance = speed * time
distance = 21000 * 5 = 105000 km
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five words that comes to your mind whenever you hear the word energy
Answers
Answer: power, renewable, extinct, solar, wind
Would appreciate brainliest <3
Answer:
chemical
mechanical
electrical
nuclear
thermal
brainliest ?
There are initially 1000 bacteria in a culture. the number of bacteria grows at a race of 65.3% per hour. How long will it take the culture to increase to 50,000 bacteria
Answers
The time needed for the bacteria to reach 50,000 is 8.8 hours.
A thousand bacteria that grow at a rate of 65.3% per hour.
t = 0 ha₁ = 1,000t = 1 h
Δa = 65.3% × 1,000 = 0.653 × 1,000 = 653
a₂ = a₁ + Δa = 1,000 + 653 = 1,653 t = 2 h
Δa = 65.3% × 1,653 = 0.653 × 1,653 = 1,079.409
a₃ = a₂ + Δa = 1,653 + 1,079.409 = 2,732.409
The number of bacteria forms a geometric sequence.
aₙ = a₁ × (rⁿ⁻¹)
a₁ = the first numbera₁ = 1,000aₙ = the n number
aₙ = 50,000 bacteria r = the common ratio
r = 1,653 ÷ 1,000 = 1.653
r = 2,732.409 ÷ 1,653 = 1.653
r = 1.653
aₙ = a₁ × (rⁿ⁻¹)
50,000 = 1,000 × (1.653ⁿ⁻¹)
50,000 ÷ 1,000 = (1.653ⁿ⁻¹)
50 = (1.653ⁿ⁻¹)
According to logarithm rulesaⁿ = b can transform into n = logₐ b
n - 1 = log₁.₆₅₃ 50
According to logarithm ruleslogₐ b = (logₙ b) ÷ (logₙ a)
n - 1 = (log₁₀ 50) ÷ (log₁₀ 1.653)
n - 1 = 1.699 ÷ 0.218
n - 1 = 7.8
n = 7.8 + 1
n = 8.8 hours
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What would it take to get the stone slab to move? Propose an
idea and explain how it would work in the context of Newton's
laws.
Answers
In order to get a stone slab to move, one would have to apply force to it. This can be done in a number of ways, depending on the situation. Here are a few possible laws that could be proposed for moving a stone slab:1. Newton's first law of motion: This law states that an object at rest will stay at rest unless acted upon by an external force. Therefore, to move a stone slab, one would need to apply a force to it.
This could be done by pushing it, pulling it, or applying a force from a lever or other mechanical device. Newton's second law of motion: This law states that the force required to accelerate an object is directly proportional to its mass. Therefore, to move a stone slab, a greater force would be required if it is more massive. This could be accomplished by using more people to push or pull the slab, or by using a larger lever or other mechanical device.. Friction: Friction is the force that opposes motion between two surfaces that are in contact with each other. In order to move a stone slab, one would need to overcome the friction between it and the surface it is resting on. This could be accomplished by reducing the friction (for example, by using rollers or lubricant), or by applying a greater force to overcome the friction.Work: Work is defined as the product of force and distance. Therefore, in order to move a stone slab, one would need to apply a force over a certain distance.This could be accomplished by pushing or pulling the slab over a distance, or by using a lever or other mechanical device to apply force over a greater distance.These are just a few possible laws that could be proposed for moving a stone slab. Ultimately, the best approach will depend on the specific situation and the resources available.For such more question on Newton's second law
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What are five examples of the executive branch responsibilities 
Answers
Make treaties with the approval of the Senate. Veto bills and sign bills. Represent our nation in talks with foreign countries. Enforce the laws that Congress passes. Act as Commander-in-Chief during a war.
what is the height of the image of a person on the screen who is 3.0 cm tall on the display? express your answer with the appropriate units.
Answers
The height of the image of a person formed by a plane mirror is equal to the height of the person.
The height of the image of a person formed by a plane mirror is equal to the height of the person itself. When an object, such as a person, is placed in front of a plane mirror, the mirror creates a virtual image that appears to be behind the mirror.
The virtual image has the same size as the object and is located at the same distance behind the mirror as the object is in front of it.
Since a plane mirror does not introduce any magnification or distortion, the height of the image will be identical to the height of the person. The mirror simply reflects the light rays in a way that creates the illusion of an image, maintaining the proportions and size of the object.
Therefore, the height of the image of a person formed by a plane mirror is equal to the height of the person.
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The correct question would be as
What is the height of the image of a person formed by a plane mirror?
Insert the values
A train is traveling at a speed of 100km/hr for 3 hours. It then speeds up to 2 poin
150km/hr for the next 2 hours. How far has the train gone at the end of 5hours
Answers
Answer:
300km
Explanation:
To find the total distance traveled within the given time frame, we need to known that distance is the product speed and time;
Distance = Speed x time
For the first lap:
Distance = 100km/hr x 3hr = 300km
For the second lap;
Distance = 150km/hr x 2 = 300km
Distance = 300km + 300km
So;
Distance = 300km
Please HURRY
particles q_1 = -8.99uc, q_2 = +5.16uc, and q_3=-89.9uc are in a line. particles q_1 and q_2 are separated by 0.220m and particles q_ 2 and q_3 are separated by 0.330m. what is the net force on particles q_1?
Answers
According to the question the net force on particle q1 is \(1.45 * 10^-4 N.\)
What is force?Force is an influence that produces a change in the motion, direction, shape, or orientation of an object. It is a vector quantity, meaning it has both magnitude and direction. Force can be derived from different sources, including physical contact, gravity, magnetism, or even electrical fields. Force affects objects by producing acceleration, deceleration, or changes in direction.
The net force on particle q1 is the sum of the forces due to the two other particles. The force on particle q1 due to particle q2 is given by Coulomb's Law:
\(F12 = k(q1q2/r12^2)\)
Where k is the Coulomb's Constant, q1 and q2 are the charges of the two particles, and r12 is the distance between them, which is 0.220m.
Similarly, the force on particle q1 due to particle q3 is given by:
\(F13 = k(q1q3/r13^2)\)
Where q1 and q3 are the charges of the two particles, and r13 is the distance between them, which is 0.330m.
The net force on particle q1 is then the vector sum of these two forces:
Fnet = F12 + F13
Substituting the values for the charges and distances into Coulomb's Law gives:
\(Fnet = (9*10^9)(-(8.99*10^-6)(5.16*10^-6)/(0.22^2)) + (9*10^9)(-(8.99*10^-6)(-89.9*10^-6)/(0.33^2))\)
Simplifying, we get
\(Fnet = 1.45 * 10^-4 N\)
Therefore, the net force on particle q1 is\(1.45 * 10^-4 N.\)
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P-W
W = F xd
Force is measured in Newtons.
Distance is measured in meters.
Time is measured in seconds.
Find the units that measure power.
A)
meters
second
B)
Newtons
second
C)
seconds
(Newton x meter)
D)
(Newton x meters)
seconds
Answers
Answer:
D
Explanation:
power is the work done per time taken,
Work done is measured in Joules, Nm
time is measured is seconds s
(Nm)/s