Answer:
geothermal power stations provide a reliable source of electricity
If Right Please Give Brainliest
Why would an elephant and feather hit the ground at the same time without air resistance?
Answer:
the elephant encounters a smaller fourth air resistance than the feather so it would fall faster.
Explanation:
his elephant has a greater acceleration of gravity and the feather and so that makes it fall faster.
How many nodes, not including the endpoints, are there in a standing wave that is two wavelengths long?.
Not including the endpoints, there are 3 nodes.
What is a node?
In a wave, a node is a stationary point. For example in a vibrating string of a guitar, the endpoints would be nodes.
But here we need to ignore the endpoints, we only know that the wave has two wavelengths.
For a wave with N wavelengths the number of nodes that are not endpoints is just given by 2*N - 1 (while if we counted the endpoints we would have 2*N + 1).
So in this case we have N = 2, then there are 2*2 - 1 = 3 nodes.
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what is the common abbreviation for millimeters, centimeters,meters
Answer:
meter m
centimeter cm
millimeter mm
Explanation:
Explain why the National Grid uses step-up and step-down transformers.
Answer:
Step-up transformers are used at power stations to produce the very high voltages needed to transmit electricity through the National Grid power lines. These high voltages are too dangerous to use in the home, so step-down transformers are used locally to reduce the voltage to safe levels.
What is the advantage of having two eyes instead of one eye in humans?
1. helps in estimating the distance of the object that they see
2. helps to see a wider area and hence more objects
3. helps to see objects that are at a great distance
Answer:
2,
Explanation:
Because one eye can see small area, having two will give your eyesight a bigger AoE (wider area)
The diagram below illustrates the law of reflection
Which is the angle of reflection?
ОА
ОВ
Ос
OD
Answer:
Answer: B) The measure of angle B equals the measure of angle C.
Explanation:
hope this helps
The organizing body for non-military space activities on behalf of the US Government is the
a National Aerospace and Surface Administration.
b National Activities and Space Administration.
c National Astronomy and Surface Administration.
d National Aeronautics and Space Administration.
Answer:
it's d "National Aeronautics and Space Administration"
when two poles of magnet are bought together regularly it looses it magnet. which process is this called ?
Explanation:
Well, let’s at first go with the “conventional” explanation (which is really pretty good): Similar poles repel each other because of magnetic lines of force. A magnetic line of force originates from the north pole of a magnet and ends at its south pole. When the north and south pole ends of a magnetic object are put into close proximity, they form an attraction because the magnetic lines continue together in the same direction. Like poles repel because the lines of force are head-to-head (Yeah, pretty much that’s it).
Based on this how many Carbon
Atoms would be on the products
Side
The distribution of wavelengths in sunlight changes across the day. Evening light has more long- wavelength light than light earlier in the day. This means __________
Which planet has a tilted axis of rotation similar to that of earth, which means it has seasons?.
Answer:
Uranus
Explanation:
it's uranus....
compare the deposition of wind and gravity
Deposition occurs when the agents (wind or water) of erosion lay down sediment. Deposition changes the shape of the land. Erosion, weathering, and deposition are at work everywhere on Earth. Gravity pulls everything toward the center of Earth causing rock and other materials to move downhill
Now, remove the positive charge by dragging it back to the basket, and drag one negative charge toward the middle of the screen. Determine how the voltage is different from that of the positive charge. How does the voltage differ from that of the positive charge?.
The correct option is;
The voltages become negative instead of positive and keep the same magnitudes
Explanation: Here we have that there is a change in direction from positive to negative with the direction pointing to opposite of the initial direction whereby the field strength does not change due to the reversal of the. Therefore the voltage becomes negative instead of negative while keeping the the magnitude.
That is there is a electric field reversal or a change electric field direction.
when a wave interacts with matter, the matter may absorb blank of the energy of the wave but can blank some of the energy through the other side
Some wave energy can be blanked through the other side in the process
known as Diffraction.
What is Diffraction?This usually occurs when a wave comes in contact with an obstacle. The
wave will bend itself around the corners of the obstacle so as to enable
its propagation to continue.
The obstructed wave can also pass through an aperture or hole if present
which is one of the important characteristics of waves.
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How would you describe the kinetic energy of the particles in a solid? low kinetic energy high kinetic energy same kinetic energy as a plasma varying kinetic energy.
Answer:
Low kinetic energy
Explanation:
Solids have the lowest kinetic energy so they vibrate very little.
The kinetic energy of the particles inside the solid is very small due to their very very slow motion.
What is Kinetic Energy?Kinetic energy of a body is defined as energy of the body by virtue of its motion. Mathematically -
E[K] = 1/2 mv²
Given is a solid substance.
Kinetic energy of a body is the energy of the body by virtue of its motion. In solids, the particles are very closely and tightly packed. They are not free to move inside the solid. They can only oscillate about their mean position when energy is transferred to it for example when the solid is heated. The kinetic energy of particles is due to their velocity. If the particles will not move then their velocity will be zero, or even if they move their velocity will be very very small. Hence, the kinetic energy will be very low.
Therefore, the kinetic energy of the particles inside the solid is very small due to their very very slow motion.
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A pendulum consists of a 0.3 kg mass at the end of a string. The pendulum is raised to a height of 0.26 m and released. When the pendulum reaches its lowest point, it has a velocity of 2.28 m/s. What is the total energy of the Pendulum-Earth system?
The total energy of the Pendulum-Earth system is equal to 1.54416 Joules.
Given the following data:
Mass = 0.3 kgHeight = 0.26 meter.Velocity = 2.28 m/s.Scientific data:
Acceleration due to gravity on Earth = 9.8 [tex]m/s^2[/tex]To calculate the total energy of the Pendulum-Earth system:
How to calculate total energy.The total energy possessed by this Pendulum-Earth system is equal to the sum of both the potential energy and kinetic energy at its lowest point.
Mathematically, the total energy is given by this formula:
[tex]E = mgh + \frac{1}{2} mv^2[/tex]
Substituting the given parameters into the formula, we have;
[tex]E = 0.3 \times 9.8 \times 0.26 + \frac{1}{2}\times 0.3 \times 2.28^2\\\\E=0.7644+0.77976[/tex]
E = 1.54416 Joules.
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what is the most important skill in basketball? Why?
Answer:
Dribbling. Dribbling is easily the most important skill for any basketball player to master. Without good dribbling and ball handling skills you won't be able to move down the court with the ball, which could mean you'll end up with moving violations instead of points.
Explanation:
Answer:
Trash talking
Explanation:
Causes the other team emotional damage and loss of confidence- ergo they will make mistakes in their play.
what are the differences between forces and pressure
Answer:
Force is a push or pull action between objects. Pressure is force acting on a surface area of an object, thus it is force per unit area.
Explanation:
witch energy is a type of mechanical energy
A lamp, bike riding, telephone ringing, or lightning?
Answer:
Bike Riding is.
Explanation:
because its energy of motion
How long tg does it take for the balls to reach the ground? use 10 m/s2 for the magnitude of the acceleration due to gravity.
Answer:
1.0s
Explanation:
distance = 1/2 × acceleration × time2 + intial speed × time
an archer shot a 0.06 kg arrow at a target. The arrow accelerated at 5,000 m/s2 to reach a speed of 50.0 m/s2 as it left the bow. During this acceleration what was the net force on the arrow to the nearest newton?
Answer:
300
Explanation:
i answered it and got it right
What are three consequences and effects of thermal expansion?
(give pointed and detailed answer)
Answer:
Thermal expansion is the tendency matter to change in shape, area, and volume in response to a change in temperature. Temperature is a monotonic function of the average molecular kinetic energy of a substance.
One of the most useful use of expansion by heat is for swiches onmany tyes of machinery and home appliancesThemostats in the millions of cars are poerated by using the eaxpansion of metal Themometers arre Bimetallic strips are used to trigger alarms or switch off heating. With heat one metal expands faster than the other which causes the strips to bend and break a circuit The disadvatages are just as common Railway lines need free movement d will buckle without sufficient clearance. Internal combustion engines need to be designed to allow for expansion contraction of metal parts It can be a nuisance for architects because when they build metal structures, they need to allow space for the metal to expand during hot weather.
Newton's second law shows that there is a(n) ________
relationship between the acceleration of an object and its mass
Answer:
Objects accelerate when the net force acting on them divides by their mass, according to Newton's second law of motion. The second law states that force and acceleration are directly related, while mass and acceleration are inversely related.
Explanation:
What is the gravitational potential energy of a 5 kg box if it is lifted 3 m from the floor?
Answer:
Its gravitational potential energy is 117.6 joules.
Explanation:
why is copper such a good heat conductor?
Copper is a good conductor because its atoms are tightly packed together and because of free mobile electrons.
Why is copper such a good heat conductor?Copper is a metallic substance found in nature.
Metals are good conductors of heat and electricity.
Metals are good conductors of heat because there atoms are tightly packed together.
Metals are also good conductors of electricity because they have electrons that are mobile.
Therefore, copper is a good conductor because its atoms are tightly packed together and because of free mobile electrons.
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10 points
What is the period of a pendulum consisting of a 6-kg object oscillating
on a 4-m string? *
0.25 s
2 s
O O O
35
45
A mass-spring system makes 20 complete oscillations in 5 seconds. What 10 points
is the period and frequency of the oscillations? *
Hi there!
1.
The period of a pendulum can be calculated using the following equation:
[tex]\large\boxed{T = 2\pi \sqrt{\frac{L}{g}}}[/tex]
T = period (s)
L = length of string (m)
g = acceleration due to gravity (m/s²)
Plug in the values:
[tex]T = 2\pi \sqrt{\frac{4}{9.8}} = \boxed{4.014 s}[/tex]
2.
Calculate the period:
[tex]T = \frac{\text{Time}}{\# of oscillations} = \frac{5}{20} = \boxed{0.4 s }[/tex]
Frequency is the reciprocal of the period, so:
[tex]f = \frac{1}{T} = \frac{1}{0.4} = \boxed{2.5 Hz}[/tex]
Onlookers are often able to tell that a person who has been drinking alcohol has lost control of his faculties or behavior.
a. True
b. False
what is the relationship between friction and velocity?
( please be a bit detailed on it and be 3-4 sentences long.)
[tex] \huge \sf \underline{ \purple{Åñwêr :}}[/tex]
Friction is typically unrelated to speed. When the surfaces start to melt or otherwise change because of heat build up or inability to follow the surface then things will change.Friction is related to velocity in that it acts to reduce velocity. In other words it causes moving objects to decelerate.The friction force may also act as one of the forces in a moment that is causing motion. If the motion is rotary, or following any path, then the friction force may be simply a part of the system of forces that influences motion.Hope It's Helps! :)write the mathemetical relation between work force and displacement
Answer:
Work is calculated as the force multiplied by the displacement in the force's direction. Work is defined as force times a displacement in the force's direction.
Jill of the Jungle swings on a vine 6.9 m long. What is the tension in the vine if Jill, whose mass is 63 kg, is moving at 2.4 m/s when the vine is vertical
We have that the Tension is mathematically given as
T = 670 Newtons
TensionWe have that when Tension in this context is use it looks towards Tension as a physical Quality that is defined as
T - m*g = m*a
the equation for the Tension is mathematically given as
[tex]T - m*g = m*a\\\\With\\\\a = v^2/r\\\\Therefore\\\\T = m*(g + v^2/L)\\\\T = 63*(9.8 + 2.4^2/6.9)[/tex]
T = 670 NewtonsFor more information on Tension visit
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