Answer: Charge that jiggles back and forth very quickly.
Explanation: Alternating current is an electric current that peroidically reverses direction .
A P E X
The following best describes alternating current, Charge that jiggles back and forth very quickly.
What increases or decreases alternating current?A transformer is a machine that either boosts or reduce the voltage of alternating current.
Step-up transformer rises the voltage of alternating current whereas step-down transformer reduces the voltage of alternating current.
Thus, Alternating current is an electric current that peroidically reverses direction.
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Alpha century is 4 light years from earth how long would it take for light form alpha centauri to reach earth
Given:
Distance of alpha century = 4 light year
Speed of light = 3 × [tex] 10^{8} [/tex] m
To find:
Time taken by light to reach earth = ?
Formula used:
Distance = speed × time
Solution:
Distance = 4 light year
Converting distance from light year into meter
1 light year = 365 × 24 × 60 × 60
4 light year = 4 × 365 × 24 × 60 × 60× 3 ×[tex] 10^{8} [/tex]
As we know,
Distance = speed × time
s = v × t
Where s = distance
v = velocity
t = time
So,t = [tex] \frac{s}{v} [/tex]
t = [tex] \frac{4 × 365 × 24 × 60 × 60× 3 ×[tex] 10^{8} [/tex]}{3 ×[tex] 10^{8}} [/tex]
t = 4 × 365 × 24 × 60 × 60 second
t = 4 year
Thus, Time taken by light to reach earth from alpha century is 4 earth year.
A voltage source in a circuit provides electrical _________.
From an ethical standpoint, which best describes why new biotechnology products should be tested extensively before they are allowed to be used?
(2 points)
There can be unintended consequences to many new biotechnology products.
Many new products end up being more expensive than they appear to be.
Biotechnology products tend to stop working after a few years.
There are usually no benefits to the products of biotechnology.
Its actually A. I did the same question and A was the correct answer.
There can be unintended consequences to many new biotechnology products so they should be tested extensively before allowed to be used. Option A is correct.
Biotechnology:
It is a field of science that use principles of technology and biology to improve the human lives.
For example-
Vaccines are produced by using the principles of biotechnology.Immunotherapy drugs are also produced by the biotech companies.The effect of biotechnology products in a long term manner cannot be predicted.Therefore, there can be unintended consequences to many new biotechnology products so they should be tested extensively before allowed to be used.
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Magnetic fields are produced by: atoms currents voltages charges
Answer:
curtent
Explanation:
two charges separated a distance of 1.0 meter exert a 1.0-N force on each other If the charges are pushed to a separation of 1/4 meter the force of each charge would be?
Final answer:
The electrostatic force between two charges increases by a factor of 16 when the distance between them is reduced to a quarter of the original distance, resulting in a new force of 16 N.
Explanation:
The question provided deals with the concept of electric force between point charges, which is described by Coulomb's Law. According to this law, the force F between two point charges is directly proportional to the product of the charges q₁ and q₂, and inversely proportional to the square of the distance r between them. Specifically, F = k * (q₁ * q₂) / r², where k is Coulomb's constant.
In the original scenario, two charges exert a 1.0-N force when separated by a distance of 1.0 meters. When the separation is reduced to 1/4 meter (or 0.25 meters), the distance squared term in Coulomb's Law (r²) becomes (0.25)², which is 1/16 of the original distance squared. Since the force is inversely proportional to the square of the distance, decreasing the distance by a factor of 4 (which squares to be a factor of 16) increases the force by that same factor of 16.
Thus, the new force would be 1.0 N multiplied by 16, resulting in a force of 16 N when the charges are 1/4 meter apart.
You throw a water balloon straight up with a velocity of 12 m/s. What is its maximum height?
The electrician's main source of information about electrical installation rules and regulations is the
Tp-15 water current has the greatest effect on which type of boat?
Answer: Displacement sailboat
Displacement sailboat are stable even in strong water current for it was designed to glide through the water smoothly with a minimum of power for they have smooth lines and curves that gently move water out of its way. In displacement boat, the water moves gradually where less resistance against the boat is created and the boat ride is smooth and safer.
-Select ALL that apply-
Absolute zero is ___.
A. 0K
B. –40oC
C. –273oF
D. –273oC
E. the temperature at which water freezes
F. the temperature at which motion is at a minimum
The answer and how to do it
((Psychology))According to Sternberg, consummate love includes:
A. attraction and low commitment.
B. intimacy, commitment, and passion.
C. passion, romance, and little responsibility.
D. passion and high commitment.
Answer:
The correct answer is B. According to Sternberg, consummate love includes intimacy, commitment, and passion.
Explanation:
The triangular love theory of the American psychologist Robert Sternberg characterizes love in an interpersonal relationship according to three different components, which are intimacy, passion and commitment:
-Intimacy, understood as those feelings within a relationship that promote the approach, the link, the connection and mainly the self-revelation. Or in other words, the affection towards another person that arises from feelings of closeness, affective bond and relationship, implies the desire to give, to receive, to share, and so on.
-Passion, as a state of intense desire for union with the other, as an expression of desires and needs, great sexual or romantic desire accompanied by psychological excitement.
-Commitment, the decision to love another person and the commitment to maintain that love. This component implies maintaining the relationship in good times and bad times
A plane traveling at a constant speed is able to travel 600 miles in 5 hours. how fast was the plane flying?
Which one of the following equations encompasses Boyle's Law, Charles's Law, and the relationship between pressure and temperature when the volume is constant?
A. P = F/A
B. P1V1 = P2V2
C. V1/T1 = V2/T2
D. PV = nRT
At an ocean depth of 10.0 m, a diver’s lung capacity is 2.40 l. the air temperature is 32.0°c and the pressure is 101.30 kpa. what is the volume of the diver’s lungs at the same depth, at a temperature of 21.0°c and a pressure of 141.20 kpa?
Answer:
V = 1.66 L
Explanation:
As we know that at the depth of 10 m the volume of the lungs of diver is given as
V = 2.40 L
Temperature = 32 degree C
Pressure = 101.30 kPa
Now we have change the values of pressure and temperature
Pressure = 141.20 kPa
Temperature = 21 degree C
Now we can use idea gas equation to solve this
[tex]PV = nRT[/tex]
[tex]\frac{P_1V_1}{RT_1} = \frac{P_2V_2}{RT_2}[/tex]
so we have
[tex]\frac{101.30 \times 2.40}{R(273 + 32)} = \frac{141.20 \times V}{R(273 + 21)}[/tex]
[tex]V = 1.66 L[/tex]
How much heat is required to warm 1.40 l of water from 20.0 ∘c to 100.0 ∘c? (assume a density of 1.0g/ml for the water.)?
The amount of heat required to warm the water can be calculated using the formula Q = mcΔT, where Q is the heat energy, m is the mass of water, c is the specific heat capacity of water, and ΔT is the change in temperature. Therefore, the amount of heat required to warm 1.40 L of water from 20.0 °C to 100.0 °C is 468,352 J.
Explanation:The amount of heat required to warm the water can be calculated using the formula:
Q = mcΔT
Where Q is the heat energy, m is the mass of water, c is the specific heat capacity of water, and ΔT is the change in temperature.
Given that the density of water is 1.0 g/mL and the volume of water is 1.40 L, the mass of water can be calculated as:
m = density × volume = 1.0 g/mL × 1.40 L × 1000 mL/L = 1400 g
The change in temperature is 100.0 °C - 20.0 °C = 80.0 °C.
Substituting the values into the formula:
Q = (1400 g)(4.184 J/g °C)(80.0 °C) = 468,352 J.
Therefore, the amount of heat required to warm 1.40 L of water from 20.0 °C to 100.0 °C is 468,352 J.
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A toy helicopter begins flying across a field with a speed of 3 m/s and an acceleration of 0.8 m/s2. How long does it take the helicopter to reach a speed of 7 m/s?
Michael is playing with two horseshoe magnets. He is trying to get them to touch, but they will not regardless of how hard he tries. Why will the magnets not come in contact?
What is the magnitude of the instantaneous velocity at 4.00 s?
The required magnitude of the instantaneous velocity at t = 4.00 s is 2 m/s.
What is velocity?Velocity is defined as the rate of change in the position of an object with respect to time.
The displacement function of an object s(t) gives the position of the object at time t. To find the instantaneous velocity at a particular time t, we need to find the derivative of the displacement function with respect to time.
In this case, the displacement function is s(t) = 2t + 4. Taking the derivative with respect to time, we get,
v(t) = ds/dt = 2
This means that the instantaneous velocity of the object is constant and equal to 2 m/s at all times. Therefore, the magnitude of the instantaneous velocity at t = 4.00 s is 2 m/s.
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Complete question-
What is the measure of the magnitude of the instantaneous velocity at 4.00 s where displacement is a function of t, s = 2t + 4?
Explain why cooler stars are red and hotter stars are blue
The type of mass movement where rock fragments become airborne is:
Nanotechnology and microtechnology devices are both very tiny. However, one property of nanotechnology distinguishes it from microtechnology. What is this unique property?
At its nucleus, the milky way galaxy is about 100,000 light-years wide and _____.
At it's nucleus,the milky-way galaxy is about 100,000 light-years wide and 10,000 light-years thick
hope this helps
A particle moving with initial velocity of 5m/s is subjected to a uniform acceleration of -2.5 m/s2.find the displacement for next 4 second
When applying a horizontal force of 30N, an object of mass 6 kg accelerates at 4m/s2. The force of friction on the surface must be ___ N
Where must an object be placed to form an image 30.0 cm from a diverging lens with a focal length of 43.0 cm?
The change in electric potential energy per unit charge is
A) amperes
B) current.
C) gravity.
D) voltage.
correct. D) Voltage is the change in electric potential energy per unit charge. It is sometimes called the electric potential difference
Voltage is called as the change in electric potential energy per unit charge which is called as the electric potential difference. So, the correct option is D.
What is Voltage?Voltage is also called electric pressure, electric tension or potential difference which is defined as the difference in electric potential between two points. This corresponds to the work required per unit charge to move a test charge between two points in a static electric field.
Voltage is called as the change in electric potential energy per unit charge which is called as the electric potential difference. The SI unit for voltage is Volt which is represented by the letter v which derived SI unit of the electromotive force or electric potential.
Therefore, the correct option is D.
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Your question is incomplete, most probably the complete question is:
The change in electric potential energy per unit charge is
A) amperes
B) current.
C) gravity.
D) voltage
An object dropped will hit the ground before an object that is thrown horizontally. true or false?
The correct answer is false.
Hope this helps! ;)
Can anyone please help me with answering this question? : An accelerating (speeding up) body has a Net Force acting in the direction of motion. True or False? Why?
Train car A is at rest when it is hit by train car B. The two cars, which have the same mass, are stuck together and move off after the collision. How does the final velocity of train cars A and B after the collision compare to the initial velocity of train car B before the collision? The final velocity is double train car B’s initial velocity. The final velocity is the same as train car B’s initial velocity. The final velocity is half of train car B’s initial velocity. The final velocity is zero since train car B will stop.
Answer:
C) The final velocity is half of train B's initial velocity.
Explanation:
The law of conservation of momentum states that in an isolated system, the total momentum of the system will remain constant. In this case, the two train cars will be treated as an isolated system.
Momentum is calculated by multiplying mass and velocity. Because the initial and final momentum are equal, we know that
[tex]m_Av_A+m_Bv_B=m_fm_f[/tex]
Since train A and train B have the same mass, mF = 2mB. Also, train A's initial momentum was 0 because it was at rest. So, we have
[tex]m_Bv_B=2m_Bv_f\\v_B=2v_f[/tex]
So, we find that the final velocity is half of train B's initial velocity.
It's a good idea to create your procedure so that it's written _____. A. on a computer B. after your conclusions C. with step-by-step instructions D. in a way other scientists can't understand
Answer:
C. with step-by-step instructions
Explanation:
In order to create a procedure that is well understood and easily readily one needs to draw step by step action of the event that can lead to the formation of the proper answer to the query, and help in forming a good ides and proper sentence, also one should try to avoid too many words and use a active voice and be proper explanation of the statements should be made.