Answer: There are seven main stores of energy: magnetic
internal (thermal)
chemical
kinetic
electrostatic
elastic potential
gravitational potential
Explanation: So you can have any of these
When the current in a coil flows in anti-clockwise direction, what pole does it create?
Answer:
The North Pole.
Explanation:
According to the Lenz's law of electromagnetic induction, an induced elemagnetic force tends to give rise to the current. In reaction, this current's magnetic field try to oppose any replacement in the magnetic flux.
So, as per the law of Lenz's electromagnetic induction, when the current passes in a coil in anti-clockwise direction, this will produce the opposite end of the coil in the north pole.
So, the correct answer is north pole.
What type of specialized cell in the eye is used for detecting low levels of light?
Answer:
There are about six to seven million cones in a human eye and are most concentrated towards the macula. Cones are less sensitive to light than the rod cells in the retina (which support vision at low light levels), but allow the perception of color.
Answer:
Rods
Explanation:
There are about six to seven million cones in a human eye and are most concentrated towards the macula. Cones are less sensitive to light than the rod cells in the retina (which support vision at low light levels), but allow the perception of color.
What statement best describes what happens when a pitcher throws a baseball with different amounts of force?
A.The mass of the baseball never changes so the more force in the pitchers arm, the higher the acceleration of the baseball before it leaves the pitcher's hand.
B.The mass of the baseball never changes and therefore neither does the acceleration of the baseball.
C.The mass of the baseball never changes so the more force in the pitchers arm, the lower the acceleration of the baseball before it leaves the pitcher's hand.
D.Baseballs do not accelerate as they go through the air.
Newton's second law allows us to find that the correct answer is:
A) The mass of the baseball never changes so the more force in the pitchers arm, the higher the acceleration of the baseball before it leaves the pitcher's hand.
Newton's second law gives a relationship between force and the product of mass and acceleration of the body
F = m a
Where F is the force, m the mass and the acceleration of the body. The bold indicate vectors
The baseball ball is a solid body that has a fixed mass, therefore the pitcher uses different forces in the arm, the acceleration must change proportionally, as the force increases, the acceleration must increase (fastball).
Let's review the different claims
A) true. These statements are in accordance with Newton's second law
B) False. If the force changes any of the other two parameters must change
C) false. Force and acceleration are proportional
D) False. When the ball is in the air it is subjected to the acceleration of gravity
With Newton's second law we find that the correct answer is:
A) The mass of the baseball never changes so the more force in the pitchers arm, the higher the acceleration of the baseball before it leaves the pitcher's hand.
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11. A tennis ball is thrown straight up in the air, leaving the person's hand with an initial velocity of 3.0 m/s, as shown to the right. What is the displacement of the ball above the person's hand?
Answer:
0.46m
Explanation:
Ik you didnt do the lab but like idek...
Which statement best describes what was demonstrated about speed and pitch in the "Doppler Effect" lab?
Speed and direction do not affect pitch.
Speed and direction affect pitch.
Direction affects pitch but not speed.
Speed affects pitch but not direction.
Answer:
Speed and direction affect pitch.
Answer:
The correct answer is B. Speed and Direction affect pitch
Explanation:
The Doppler effect, a quantitative analysis that demonstrates how the repetition heard by the stable perceiver depends on whether the perceiver sees the source approach, causes sound and light waves to increase and decrease in frequency due to the proportional motion between the wave source and its receivers. Accordingly, when the wave source is moving, waves are perceived at frequencies that are different from one another.
I know I'm answering a little later, but this will help any people in the future.
Please 5 star and say thx ty and hopes this helps
The sun will probably end up as a white dwarf. How will it be different then from what it is today
Answer:
The differences that will be observed are;
1) The Sun will become faint and will no longer be yellow but rather appear white and will no longer be visible (become invisible) by unassisted vision as we can see the Sun today
2) The size of the Sun will shrink to a size comparable to the size of the Earth
3) The Sun will cool down and will no longer radiate as much heat
4) The nuclear reactions that generate energy on the Sun's will seize and the and the heat from the Sun will be from residual thermal energy
5) The core, which is the hottest part of the Sun will no longer be hydrogen but carbon and oxygen
Explanation:
36) What is the formula for determining the amount of heat energy needed to change the temperature of an object
The formula for determining the amount of heat energy needed to change the temperature of an object is given by the equation Q = mcΔT, where Q represents the heat energy, m is the mass of the object, c is the specific heat capacity of the material, and ΔT is the change in temperature.
The amount of heat energy needed to change the temperature of an object can be calculated using the formula Q = mcΔT. The variables in the equation have the following meanings: Q represents the heat energy, which is measured in joules (J); m is the mass of the object, typically measured in kilograms (kg); c is the specific heat capacity of the material, which is the amount of heat energy required to raise the temperature of one kilogram of the material by one degree Celsius (J/kg·°C); and ΔT is the change in temperature, measured in degrees Celsius (°C).
The formula states that the heat energy (Q) required is directly proportional to the mass of the object (m), the specific heat capacity (c) of the material, and the change in temperature (ΔT). By multiplying the mass, specific heat capacity, and temperature change, we can calculate the amount of heat energy needed to change the temperature of an object. This formula is applicable to various scenarios where heat transfer and temperature changes are involved, allowing for accurate calculations of heat energy requirements.
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a circular loop of current-carrying wire lies in the z = 0 plane. in which of these directions would a uniform magnetic field be applied to provide the largest torque on the loop?
The uniform magnetic field should be applied perpendicular to the plane of the loop to provide the largest torque.
Torque is the measure of the rotational force that causes an object to rotate. In this case, the torque on the current-carrying loop is proportional to the product of the magnetic field and the area of the loop. The maximum torque is achieved when the magnetic field is applied perpendicular to the plane of the loop.
This is because the magnetic field lines intersect the loop at right angles and exert the maximum force on the current-carrying wire, resulting in a maximum torque. If the magnetic field is applied parallel to the plane of the loop, then the torque would be zero, as there would be no force acting on the loop. Therefore, for the largest torque, the uniform magnetic field should be applied perpendicular to the plane of the loop.
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(8.86 + 1.0 x 10^-3)÷3.610×10^-3
Answer:
2454.57
Explanation:
Step 1: Solve
\(\frac{(8.86+0.001)}{(3.610)(10^{-3}) }\)
\(\frac{8.861}{0.003.61 }\)
2454.57
Therefor the answer to this equation is 2454.57
A group of students sets up an electric circuit with wires, a battery, and a light bulb. Why is there circuit called a direct circuit?
A direct circuit is so called because it is a circuit that has only one uninterrupted path for the electric current to flow from the power source (the battery) to the load (the light bulb).
What is circuit?A circuit is an electrical network or system that allows the flow of electrical current. It is composed of components such as resistors, capacitors, inductors, switches, and transistors, which are connected to each other by conductive wires or traces. The components in a circuit are arranged in a way that allows electrons to flow through the circuit in a controlled manner. A circuit may have multiple paths for electrons to travel, allowing it to be used for multiple purposes. Circuit diagrams are used to represent the physical layout of a circuit, showing how the components are connected. A circuit can be used for a variety of applications such as powering a device, controlling a system, or providing a signal. Circuits are also used to create integrated circuits that are used in modern electronics.
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The current through a circuit is 0.05 Amps. How many Coulombs of charge pass
through the circuit in 15 seconds?
The answer to this question is:
Simply it can be calculate using the equation Q=It, here Q is the charge in coulombs , I current in Amps and t is the time in seconds.
so the answer is Q = 10*60 = 600 coulomb.
I need some help with this.
\(I = \frac{V}{R} \\ \)
Thus :
\(I = \frac{160}{2} \\ \)
\(I = 80 \: \: A\)
So :
\(V = 160\)
\(I = 80\)
\(R = 2\)
Consider the following system, where F = 120 N, m = 1 kg, and M = 5 kg. What is the magnitude of the force with which one block acts on the other?
Consider the following system, where F = 120 N, m = 1 kg, and M = 5 kg. Force exerted by the lighter block on the heavier block is F_2=20N
What is the magnitude of the force?F = 120N
m = 1kg
M = 5kg
Generally, the equation for acceleration is mathematically given as
\(a=\frac{F}{m+M} \\\\a=\frac{120}{1+5} \\\)
a=20m/s^2
Let's formulate the heavier block's equation of motion.
F_1=F-F_2
Ma=F-F_2
It is estimated that the lighter block will exert the following force on the heavier block:
\(&F_2=\mathrm{F}-\mathrm{Ma} \\&F_2=120-(5 *20) \\\)
F_2=20N
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why is the fuse used in a circuit called safety fuse?
Answer:
The maximum current which can flow through a fuse without melting it, is called its rating. ... If current higher than 8 A flows through the fuse, it would melt and circuit gets broken. ... Hence, fuse acts as a safety device
Answer:
The guy above me is right
Explanation:
4.
An "extreme" pogo stick utilizes a spring whose uncompressed length is 46 cm and whose force constant is 1.4 x 104 N/m. A 60-kg person is jumping on the pogo stick,
compressing the spring to a length of only 5.0 cm at the bottom of their jump. Which is the upward acceleration of the person at the moment the spring reaches its greatest
compression at the bottom of their jump?
6 m 2
Answer:
a = 85.9 m / s²
Explanation:
For this exercise we can use Newton's second law in the most compressed part
F - W = m a
force is the spring elastic force
F = - k Δx
k Δx - m g = m a
a = k/m Δx - g
Δx = x₀ -\(x_{f}\)
ΔX = 46 - 5 = 41cm (1m / 100cm) = 0.41 m
let's calculate
a = 1.4 10⁴/60 0.41 - 9.8
a = 85.9 m / s²
The concept of inertia forms the basis for Newton's Third Law of Motion True False
Given
The concept of inertia forms the basis for Newton's Third Law of Motion
To find
The given statement is true or false
Explanation
The third law of motion states that every action has a equal and opposite reaction
Inertia is the property by virtue of which an object at rest tends to be at rest and object at motion tends to be at motion
Thus both the concept are not similar
Conclusion
The given statement is false
The height of a transverse waves is known as its?
Answer:
amplitude
Explanation:
amplitude of a wave is the maximum displacement of a point from its rest position.
hope you get it,
Which of the following statements is true?
1.Heat is transferred in solids by convection.
2.Both liquids and gases are fluids.
3.Temperature is the same as heat.
4.Objects moving through air don't experience friction.
At what common temperature will a block of wood and a block of metal both feel neither hot nor cold to the touch? 1. when the temperature of the blocks is higher than the temperature of your hand 2. when the temperature of the blocks is the same as the temperature of your hand 3. when the temperature of the blocks is lower than the temperature of your hand 4. at room temperature 5. at the freezing point
When the temperature of the blocks is the same as the temperature of your hand, you feel neither hot nor cold to the touch. Hence, option ( 3) is correct.
What is temperature?Temperature is a unit used to describe hotness or coldness. It can be stated in terms of any number of arbitrary scales and shows the direction in which heat energy will naturally flow, i.e., from a hotter body to a colder body (one at a lower temperature).
Temperature is not the same as the energy of a thermodynamic system; for instance, an iceberg has a significantly larger total heat energy than a match, despite the fact that a match is burning at a much higher temperature.
If you touch a block that is at higher than or at lower than the temperature of your hand, you feel hot or cold respectively. But, when the temperature of the blocks is the same as the temperature of your hand, you feel neither hot nor cold to the touch.
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Which statement is correct about two objects that have gravitational force?
They have mass.
They move slowly.
They are round in shape.
They have high temperature.
Answer:
1 and 2
Explanation:
The formula itself has nothing to do with shape or temperature. The formula does have mass and the speed depends on the how great the mass/radius is.
how does the bending of light combined with the doppler effect and the aberration of light affect the appearance of an accretion disk close to a black hole?
Some spectral lines are excluded in the interior of the accretion disc as a result of the doppler effect and optical aberration. In the plane of view, the gas will undergo a strong doppler redshift since it is travelling at relativistic speeds in close proximity to the black hole.
How does the Doppler effect work?Doppler Effect is the term used to describe the shift in wave frequency that occurs when a wave source and its observer move in relation to one another. Christian Johann Doppler made the discovery and defined it as the process of rising or falling starlight depending on the relative motion of the star.
All sorts of waves, most notably water waves, sound waves, and light waves, have been seen to exhibit the Doppler effect.
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if rob believes that his father loves him unconditionally, why does he think he will have to do a lot extra chores to pay for the car?
Answer: Rob's father does love him unconditionally but he also just wants rob to have a successful future and be able to have money for his own car and other necessities needed for when he is on his own.
Explanation:
Pedro y Juan van a la escuela en bicicleta. Pedro vive a 5 km de distancia al este de la escuela, y Juan al oeste es decir -4 km. Si ambos hicieron un tiempo de 0.25 horas. Cuál es la velocidad de cada uno?
Answer:
Lo primero que hay que recordar es la relación:
Velocidad = Distancia/tiempo.
Para el caso de Pedro, el vive a 5km de la escuela (es decir, para llegar a la escuela, el debe recorrer -5km, entonces la distancia es -5km), y recorre esa distancia en 0.25 horas, entonces su velocidad es:
Velocidad = -5km/0.25hr = -20km/h
Esto significa que Pedro se mueve con una velocidad de -20km/h, lo que significa que se mueve hacia el oeste con un módulo de 20km/h
Para el caso de Juan, el vive a -4km de la escuela, entonces el tendrá que recorrer 4km para llegar a la escuela, y los recorre en 0.25 horas, entonces su velocidad sera:
Velocidad = 4km/0.25h = 16 km/h
Lo que significa que Juan tiene una velocidad de 16km/h hacia el este.
what does digital audio recorded from a microphone and digital audio synthesized with electronic instruments have in common
Both digital audio recorded from a microphone and digital audio synthesized with electronic instruments are forms of digital audio.
They both involve the conversion of sound waves into a digital format, which allows for manipulation, editing, and playback on electronic devices.
Additionally, both types of digital audio can be mixed together to create a complete audio production, such as a song or a podcast.
Despite the differences in the source of the sound waves, the end result is a digital file that can be easily shared and distributed across various platforms, making digital audio an essential part of modern media production.
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The half-life of iodine-131 is 8 days. If a sample originally contains 0.96 g of the isotope, how much will remain after 24 days?
Answer: you ever get the awnser?
Explanation:
Answer: 0.12 g
Explanation: I got it right on the quiz.
What is the formula for instantaneous rate of change?
The formula for the instantaneous rate of change of a function f(x) at a point x=a is: f'(a) = lim(h→0) [f(a+h) - f(a)] / h.
What is rate of change?Rate of change refers to the amount by which a quantity changes over a given period of time, often expressed as a ratio or a percentage. In mathematical terms, rate of change is the slope of a line or the derivative of a function. For example, if a car travels a distance of 200 miles in 4 hours, the rate of change of the car's distance from the starting point is 50 miles per hour (200 miles / 4 hours). Similarly, if the price of a product increases from $10 to $15 in a year, the rate of change in price is 50% ($5 increase / $10 original price). Rate of change can be positive or negative, depending on whether the quantity is increasing or decreasing over time. A positive rate of change indicates an increasing trend, while a negative rate of change indicates a decreasing trend. The magnitude of the rate of change can also provide insights into the speed or intensity of the change. Rate of change is an important concept in many fields, including mathematics, physics, economics, and engineering. It is used to analyze trends, make predictions, and evaluate performance.
Here,
This formula can be interpreted as the change in the value of the function divided by the change in the value of x, as the change in x approaches zero. Alternatively, it can be interpreted as the slope of the secant line that passes through the two points (a, f(a)) and (a+h, f(a+h)), as the distance between the two points approaches zero.
The instantaneous rate of change is an important concept in calculus and is used to study the behavior of functions and their derivatives.
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how to find the actual reading of the vernier caliper
To find the actual reading of the vernier caliper, you need to do the following:
Read the main scale: Read the main scale value that is to the left of the zero on the vernier scale. Record this value in millimeters.
Read the vernier scale: Look at the vernier scale and identify the line on the vernier scale that lines up exactly with a line on the main scale. Record the number on the vernier scale that lines up with the main scale line.
Add the two readings: Add the value you recorded from the main scale to the value you recorded from the vernier scale. This gives you the actual reading of the vernier caliper in millimeters.
For example, if the main scale reading is 20.0 mm and the vernier scale reading is 0.15 mm, the actual reading would be 20.15 mm.
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The Milky Way Galaxy is (a) another name for our solar system; (b) a small group of stars visible in our night sky; (c) a collection of more than 100 billion stars, of which our Sun is one
Answer:
C
Explanation:
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Question 55
Marks: 1
Long term effects of radiation on an individual are predictable.
Choose one answer.
a. True
b. False
False. While there are known long-term effects of radiation exposure, the specific effects on an individual can vary depending on factors such as the type and amount of radiation exposure, age, health status, and genetics.
Some known long-term effects of radiation exposure include an increased risk of cancer, genetic mutations, and damage to organs such as the thyroid and reproductive organs. However, the severity and timing of these effects can vary widely among individuals. Additionally, exposure to radiation can also have immediate effects such as skin burns and radiation sickness. It is important to note that the long-term effects of radiation exposure can be reduced through measures such as limiting exposure time, using protective equipment, and following proper safety protocols.
b. False
Long-term effects of radiation on an individual are not entirely predictable. While it is true that exposure to high levels of radiation can lead to an increased risk of certain health issues such as cancer and genetic mutations, the specific outcome for an individual depends on various factors. These factors include the type and amount of radiation, duration of exposure, age, and individual genetic makeup. Additionally, the latent period between radiation exposure and the onset of health issues can vary significantly, making it challenging to predict the exact long-term effects for a particular individual.
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(FREE FALL) An object falls from an unknown height, crosses last 196m in 4s. Find the falling time and height.
Answer: An object is dropped from a height of 75.0 m above ground level.
Explanation: I hoped that helped !