the is the measurement of electrical pressure and the ""ohms law"" symbol for this unit is .
Answers
The measurement of electrical pressure is voltage, and the symbol for voltage in Ohm's Law is "V."
Ohm's Law states that the voltage (V) across a conductor is equal to the product of the current (I) flowing through the conductor and the resistance (R) of the conductor:
V = I * R
In this equation, "V" represents the voltage in volts, "I" represents the current in amperes, and "R" represents the resistance in ohms.
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Related Questions
Describe the properties of waves and explain how they can be measured.
Why is a sound wave considered a mechanical wave?
Answers
The properties of waves are: wavelength, time period.
Sound wave is considered a mechanical wave because it requires medium to travel.
What is mechanical wave?A mechanical wave is one whose energy cannot be transmitted via a vacuum. To transfer their energy from one place to another, mechanical waves need a medium.
A mechanical wave is something like a sound wave. A vacuum can not be traversed by sound waves.
Units of time and space can be used to measure the fundamental characteristics of waves. The length between wave crests, or wavelength (L), and the time it takes a wave to pass a fixed point, or period (T), are two characteristics that can be measured directly.
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Aunt Mary needs to hang a picture in her bedroom. She uses a hammer to drive the nail into the wall. Find the force exerted by the hammer on the nail if the hammer stays in contact with the nail for 0.5s and has an impulse of 25Ns
Answers
Answer:
50N
Explanation:
Impulse = Force × Time
25 = Force × 0.5
Force = 25/0.5
= 50N
A quantity that is conscious of direction is referred to as a:.
Answers
Answer:
Vector quantity
Explanation:
How do the processes of foliation and bedding act as destructive forces of rock layers?
Answers
The process of foliation and bedding affects the weathering of the rock layer by changing the formation, alignment, textures, and direction of the mineral grains and particles of the rock.
Destructive forces are forces that break down or weather the rocks layer of the Earth's Surface.
Foliation refers to the parallel arrangement and alignment of specific mineral particles that present the rock with a striped formation and appearance.
This is because the process of foliation occurs when pressure smears or squeezes the surface of the mineral particles of the rock resulting in an elongated pattern in the direction with which the pressure is applied.
Therefore, we can conclude that the process of foliation and bedding affects the weathering of the rock layer by changing the formation, alignment, textures, and direction of the mineral grains and particles of the rock.
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Using deductive reasoning, write the converse, inverse, and contra positive of an if-then statement. Part I: Write an if-then statement below. (1 point)
Answers
Converse:
if q , then p
Inverse:
If not p , the not q.
Contra Positive:
If not q, then not p.
If then statement is a conditional statement. In this statement there is some condition at the first part of the sentence and then in the second part there is a conclusion.
The example of if then sentence is as follows,
If this camel is thirsty, then it will drink water from the well.
In this example there is a condition in first part that if camel is thirsty, in the second part there is conclusion which states that then it will drink water from well.
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A mechanical wave is created when a source of energy causes _____.
a displacement that must be filled
a vibration to travel through a medium
the structure of a medium to be altered
Answers
A mechanical wave is created when a source of energy causes a vibration. Vibration causes disturbance in system.
What is mechanical wave?A mechanical wave is a wave that is caused by the oscillation of matter and so conveys energy through a medium.
When an energy source causes a vibration to propagate across a medium, it is called a mechanical wave.
A mechanical wave is a type of wave in which the medium's vibration is perpendicular to the wave's travel direction.
Hence, vibration is the correct answer.
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What is the measure of how much a material resists the formation of an electric field?
A. Permittivity
B. Dielectric
C. Capacitance
D. Resistance
Answers
Answer:
C. Capacitance
Explanation:
right on EDGE2021
Two men standing on the same side of wall and at the same distance from It, such that they are 4oom apart when one fires a gun the other hears the first report in 1.2s and the second in 0.5s after the first. calculate 1) Velocity of sound in air . 2)the perpendicular distance of the men from the wall.
Answers
Answer:
1. 571.43m/s
2. 142.9m and 342.9m
Explanation:
1.Take the difference in time.
1.2-0.7=0.7 seconds
Take the distance between them and divide with differnce in time.
400÷0.7=571.43 seconds.
2.Take the time of the two men and divide by two.
0.5÷2= 0.25 secs
1.2÷2= 0.6 secs
multiply each with the velocity.
0.25×571.43=142.9m
0.6×571.43=342.9m
i need help with question 5heat capacity of water =4200 heat capacity of aluminium is = 897 heat capacity of oil = 1900 and heat capacity of gold is 129 if equal amount of energy is applied to all these materials which material would have the greatest temperature change and why. Explain your answer
Answers
Given that
heat capacity of water = 4200
heat capacity of aluminium = 897
heat capacity of oil = 1900
heat capacity of gold = 129
Heat capacity is the amount of heat a material absorbs to increase its temperature by 1 degree Celsius.
So, larger the heat capacity of a material lower will be the temperature change.
If equal amount of energy is applied to the materials, then gold will have the greatest temperature change as its heat capacity is lowest than other materials.
According to Ohm's Law, current I (in amps), voltage V (in volts), and resistance R (in ohms) in a circuit are related by I=V/R . Calculate dI/dR ∣∣ R−6 assuming that V has the constant value V=27. (Use symbolic notation and fractions where needed.)
Answers
According to Ohm's Law, the value of \(\frac{dI}{dR} \rvert \rvert R=-6\) is -3/4 or -0.75.
Ohm's Law states that the current flowing through a conductor is directly proportional to the voltage applied across it, and inversely proportional to the resistance of the conductor. It can be mathematically represented as:
V = I * R
Where:
V represents the voltage (in volts),
I represents the current (in amperes),
R represents the resistance (in ohms).
To calculate dI/dR at R = -6 using Ohm's Law equation I = V/R, we can differentiate the equation with respect to R while treating V as a constant:
\(\frac{dI}{dR} = \frac{d}{dR} \left(\frac{V}{R}\right)\)
Using the quotient rule for differentiation, we have:
\(\frac{dI}{dR} = \frac{R \frac{dV}{dR} - V \frac{dR}{dR}}{R^2}\)
Since V is a constant (V = 27), the derivative dV/dR is zero. Also, dR/dR is equal to 1. Substituting these values, we get:
\(\frac{dI}{dR} = \frac{R * (0 - 27) * 1}{R^2}\)
\(=\frac{-27}{R^2}\)
Therefore, dI/dR at R = -6 is:
\(\frac{dI}{dR} \rvert \rvert R=-6\) \(=\frac{-27}{(-6)^2}\)
\(= -\frac{27}{36}\)
= -3/4 or -0.75 (in fractional notation).
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not sure on what to write in the blank spots.
Answers
Answer:
Explanation:
I hope this was all you wanted. Everything else seems finished correctly.
CALCULATE ELECTRIC POTENTIAL
URGENT PLEASE HELP ASAP
Answers
Given two charges, \(q_2 =2 \times 10^{-6} \ C\) and \(q_3 =-2 \times 10^{-6} \ C\) we are asked to calculate the the Electrical Potential at a point, "P."
The distance from point "P" to charge 2 is \(r_{p2}=0.12 \ m\)
The distance from point "P" to charge 3 is \(r_{p3}=0.05 \ m\)
What is Electric Potential?
Electric potential is a measure of an electric fields ability to alter/change the potential energy of a charge.
Electric potential can be solved in various ways, in this case we are talking about point charges. So we can calculate the electric potential at point "P" using the following equation,
\(\boxed{V=\frac{k_eq}{r}}\)
Where,
=>\(k_e=8.99 \times 10^9 \ \frac{Nm^2}{C^2}\) which is Coulomb's constant
=> q is the charge (in Coulombs)
=> r is the distance (in meters) from the charge to point you want to know the electric potential at.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
\(V_{tot}=V_2+V_3 \Longrightarrow V_{tot}=\frac{k_eq_2}{r_{p2}}+\frac{k_eq_{3}}{r_{p3}}\)
\(\Longrightarrow V_{tot}=\frac{(8.99 \times 10^9 \ \frac{Nm^2}{C^2})(2 \times 10^{-6} \ C)}{0.12 \ m}+\frac{(8.99 \times 10^9 \ \frac{Nm^2}{C^2})(-2 \times 10^{-6} \ C)}{0.05 \ m}\)
\(\Longrightarrow V_{tot}=149833 \ V-359600 \ V\)
\(\Longrightarrow \boxed{V_{tot}=-209767 \ V} \therefore Sol.\)
The electric field potential at the point P is -3.6 * 10^5 V
What is the electric field potential?Electric potential, sometimes referred to as electric potential energy per unit charge, is a scalar quantity that calculates how much effort is required to transfer a test charge from one location in an electric field to another. Volts (V) are used to quantify it, which are the same as joules per coulomb (J/C).
We know that the electric field potential can be obtained as;
V = kq/r
V = 9 * 10^9 * -2 * 10^-6/0.05
V = -3.6 * 10^5 V
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Which of the following statements is true?
Observations are often used to form questions about the world.
The dependent variable is changed by the experimenter.
The best hypotheses are written as answers to a question.
A hypothesis is created at the end of an experiment.
Answers
Answer:
The answer is B.
Explanation:
They are in control of the experiment, they can change it the variables to better help the experiment.
Answer:
b
Explanation: its b
Assume a 4-pole induction machine with 240 V (line-line RMS) applied to the stator at 60 Hz. What is the mechanical synchronous speed
Answers
The mechanical synchronous speed of the 4-pole induction machine with 240 V applied to the stator at 60 Hz is 1800 rpm.
The mechanical synchronous speed of an induction machine is the speed at which the rotating magnetic field produced by the stator winding moves. It can be calculated using the formula:
Ns = 120 * f / P
where Ns is the mechanical synchronous speed in revolutions per minute (rpm), f is the frequency of the applied voltage in hertz (Hz), and P is the number of poles in the machine. In this case, the frequency is given as 60 Hz, and the number of poles is 4. Substituting these values into the formula, we get:
Ns = 120 * 60 / 4
= 1800 rpm
Therefore, the mechanical synchronous speed of the 4-pole induction machine with 240 V applied to the stator at 60 Hz is 1800 rpm. This means that the rotor of the machine would ideally rotate at a speed of 1800 revolutions per minute when the machine is operating under normal synchronous conditions.
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describe how the *weight* of a spacecraft would compare between when it was on earth and when it was on the moon.
describe how the *mass* of a spacecraft would compare between when it was on earth and when it was on the moon
Answers
Answer:
The mass of a spacecraft is the same on earth as the moon.
W = F = M a the weight is different because the acceleration due to gravity is less on the moon than it is on earth.
On could choose a different mode of acceleration, say a compressed spring, and find that mass of an object does not depend on gravitational attraction. F = M a holds on the moon as well as on earth
The force required to maintain an object at a constant speed in free space is equal to __________
Answers
An object moves in a horizontal circle with a speed of 2.0 m/s. What would be its speed if the radius of its motion doubled? (Assume the centripetal force and mass remain constant.)
ons in
Finance - on
plorer
1.5 m/s
0 2.8 m/s
4.0 m/s
5.2 m/s
8.3 m/s
Answers
Answer: how do do it
Explanation:
ur welcome
high-mass stars have __________ lifetimes than low-mass stars.
Answers
Lifetimes of high-mass stars are shorter than those of low-mass stars.
Do stars with high masses live longer than stars with low masses?A star's ability to convert its hydrogen to helium will increase with mass.In spite of having more fuel, it turns that out high mass stars burn up that fuel considerably more rapidly than low mass stars.Hence, low mass stars live a lot longer than higher molecular stars do!
How long does a relatively low star last?Of all the sources of energy in the cosmos, low-mass planets are the ones that live the longest.Although though they outnumber all the other stars by a wide margin, they are the faintest, making them difficult to see.Some low-mass stars have a trillion-year life span.
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Nadia compares the weights, in grams, of some apples and oranges. she finds the
median and interquartile range of the weights.
1. which sample has a greater variability, or spread?
2. according to these measures, is it possible that the heaviest piece of fruit in the
two samples was an orange? explain why or why not.
Answers
The sample with a greater variability or spread is the one with a larger interquartile range.
Which sample, based on the measures of median and interquartile range, suggests the possibility of the heaviest fruit being an orange?The interquartile range measures the spread or variability of a dataset by considering the range between the first quartile (Q1) and the third quartile (Q3). A larger interquartile range indicates a greater spread in the data. Therefore, if one sample has a larger interquartile range than the other, it means that the weights of the fruits in that sample vary more widely.
Regarding the possibility of the heaviest fruit being an orange, it depends on the specific values within the dataset. The median represents the middle value of the dataset, and if the heaviest fruit is within the upper half of the data, it is possible that the heaviest fruit could be an orange. However, without knowing the exact values, it is not possible to determine this solely based on the measures of median and interquartile range.
To make a definitive conclusion about the heaviest fruit, the actual weights of the fruits in both samples would need to be compared. Additional information such as the mean, maximum value, or individual observations would provide a more accurate assessment.
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The electric field from a sheet of charge is perpendicular to the sheet and has a constant magnitude of Q/(Aeo), where A is the area of the sheet and Q is the charge on the sheet. If the sheet has an area, A=32.93 cm2, and a charge of 20.93 microC, what force, in nanoNewtons, would an electron experience due to this electric field?
Answers
The exercise tells us that the electric field is given by the following equation:
\(\vec{E}=\frac{Q}{A\epsilon_0}\)And it also gives us, A and Q. Thus, our electric field inside the capacitor is:
\(E=\frac{20.93*10^{-6}}{(32.93*10^{-4})*(8.85*10^{-12})}=718181521.8\frac{V}{m}\)As we know, the electric force can be written as:
\(F=q.E\)The charge of an electron is a constant, which is q=1.6*10^(-19) C.
Finally, our force can be written as:
\(F=1.6*10^{-19}*718181521.8=1.149*10^{-19}=0.00001149microN\)Our final answer is 0.00001149 micro Newtons
In order to produce an electric current in a coil of wire, a magnetic field through the coil must be
Answers
Answer:
Explanation:
In order to produce an electric current in a coil of wire, a magnetic field must be changing or varying in strength or direction, relative to the coil. This changing magnetic field induces an electric current in the wire coil, according to Faraday's Law of Electromagnetic Induction. The strength of the induced current depends on the rate of change of the magnetic field, the number of turns in the coil, and the resistance of the wire.
Please help it's for a test that is due right now.
A car of mass 1000kg is traveling 30m/s
a) What is the kinetic energy?
b) How high will it have to travel up a hill to have the same potential as kinetic energy as this speed? Remember Ep-Ek
Answers
Answer:
a. 15,000J
b. .76m
Explanation:
KE = (1/2)m*v²
KE = .5*1000kg*30m/s
KE = 15000J
PE = m*g*h
7500J = 1000kg*9.81m/s²*h
7500J = 9810*h
h = .76m
a block of wood of mass 4.5 kg is floating in a pond, and oscillating with a frequency of 2.5 hz. what is the effective spring constant of the water?
Answers
The effective spring constant of the water when a block of wood of mass 4.5 kg is floating in a pond and oscillating with a frequency of 2.5 Hz is 176.72 N/m.
The block of wood is floating in the pond, so the water exerts an upward buoyant force on it. This buoyant force can be considered as a restoring force that causes the block of wood to oscillate up and down. The effective spring constant of the water can be calculated using the formula: k = 4π²m/T²
where k is the effective spring constant of the water,
m is the mass of the block of wood, and T is the period of oscillation.
The period of oscillation is the reciprocal of the frequency, so:
T = 1/f = 1/2.5 = 0.4 s
Now, substitute the values into the formula:
k = 4π²m/T²= 4π²(4.5)/(0.4)²= 176.72 N/m
Therefore, the effective spring constant of the water when a block of wood of mass 4.5 kg is floating in a pond and oscillating with a frequency of 2.5 Hz is 176.72 N/m.
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PLEASE HELP NEED ANSWERS ASAP TO FILL IN THE TABLE 20 POINTS GIVEN AND BRAINLIEST ANSWER
An astronaut on the moon dropped an object at rest from a height of 3.0 meters. The table shows data from a sensor used to measure position as a function of time. Complete the table by determining the velocity at each time. Determine the acceleration due to gravity on the moon. Time (s) Position (m) Velocity (m/s) 0.0000 0.1000 0.2000 0.3000 0.4000 0.0000 -0.0081 -0.0326 -0.0733 -0.1304
Answers
The acceleration due to gravity on the moon, as determined from the given data, is approximately 0.7095 m/s².
To determine the velocity at each time and calculate the acceleration due to gravity on the moon, we can use the kinematic equations. The velocity can be obtained by calculating the change in position over the change in time.
Using the provided data, we can complete the table as follows:
Time (s) Position (m) Velocity (m/s)
0.0000 0.1000 0 (initial velocity)
0.2000 -0.0081 (0.1000 - (-0.0081)) / (0.2000 - 0.0000) ≈ 0.5417
0.3000 -0.0326 (-0.0081 - (-0.0326)) / (0.3000 - 0.2000) ≈ 0.2533
0.4000 -0.0733 (-0.0326 - (-0.0733)) / (0.4000 - 0.3000) ≈ 0.3957
0.5000 -0.1304 (-0.0733 - (-0.1304)) / (0.5000 - 0.4000) ≈ 0.5543
Now, let's calculate the acceleration due to gravity on the moon. We can assume that the object is in free fall, and the only force acting on it is gravity. The acceleration due to gravity on the moon is approximately 1/6th of the acceleration due to gravity on Earth (9.8 m/s²).
Using the velocity values at different times, we can calculate the acceleration using the formula:
Acceleration = (Final Velocity - Initial Velocity) / Time
Acceleration at 0.2 s = (0.5417 - 0) / 0.2 ≈ 2.7085 m/s²
Acceleration at 0.3 s = (0.2533 - 0.5417) / 0.1 ≈ -2.8834 m/s²
Acceleration at 0.4 s = (0.3957 - 0.2533) / 0.1 ≈ 1.424 m/s²
Acceleration at 0.5 s = (0.5543 - 0.3957) / 0.1 ≈ 1.586 m/s²
Since the object is in free fall, the acceleration is equal to the acceleration due to gravity. Taking the average of the calculated accelerations:
Average Acceleration = (2.7085 - 2.8834 + 1.424 + 1.586) / 4 ≈ 0.7095 m/s²
Therefore, the acceleration due to gravity on the moon, as determined from the given data, is approximately 0.7095 m/s².
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What is the volume of a cone with a height of 27cm and a radius of 13cm? And your answer to the nearest tenth
Answers
Answer:
the volume of the cone is \(4778.36 cm^3\)
Explanation:
The computation of the volume of the cone is shown below:
As we know that
The Volume of the cone is
r denotes the radius
And, h denotes the height
So,
\(= \frac{1}{3} \pi r^2 h \\\\= \frac{1}{3} \times 3.14 \times 13^2 \times 27\\\\= 4778.36 cm^3\)
Hence, the volume of the cone is \(4778.36 cm^3\)
a 65- kg person is skiing down a hill. the skier’s speed at the bottom is 15 m/s. if the skier hits a snowdrift and stops in 0.30 s, (a) how far does she go into the drift? (b) with whay average force will she strike the drift?
Answers
If the skier hits a snowdrift and stops in 0.30 s, She would go into the drift to 2.25 m. The average force that she will strike the drift is 3250 N.
What is speed?The speed at which an object's location changes in any direction. The distance traveled in relation to the time it took to travel that distance is how speed is defined.
a = -15 / 0.3 = -50 m/s2
v2 - v02 = 2ax
- 152(-50)x == > x = 2.25 m
F = ma = 65 x 50 = 3250 N
Therefore, a. She would go into the drift to 2.25 m.
b. The average force that she will strike the drift is 3250 N.
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Recalculate 100 km/h to m/s
Answers
= 27.777
Explanation:
A kilometer has 1,000 meters, and an hour has 3,600 seconds, so 100 kilometers per hour is: 100 x 1,000 / 3,600 = 27.777... m/s.
A train crew was cleaning out a rail tanker that had been emptied of its contents. They rinsed the rail car out with scalding hot water through a port of the bottom of the rail car. When they were finished and had drained the water out they shut the valve of the port and went home for the day. During the night the temperature droppe d and it was very cold outside. When they came back to the work the next night something happens to the rail car!
Answers
Answer:
...............
.
......
a. What is the coefficient of kinetic friction?
Answers
Explanation:
Coefficient of kinetic friction is the resistive force that opposes the motion of a body as it moves and is in contact with another body.
It is found by dividing the frictional force by the normal force.
Friction is a force that opposes motion. Static friction is for bodies that are not in motion Kinetic friction is for moving bodies.the mass of a meteoroid was found to be 1.24 × 10^7 kilograms. Write the mass in standard notation.
Answers
Answer:
Explanation:
12,400,000