If it is 9 am in San Francisco, then there will be 12pm in New York. it happens because of spin rotation of our earth.
What is Clock ?A clock or a timepiece is a device used to measure time. The clock is one of the oldest human inventions. It has three hands moves in the circle. one is second hand, which show seconds. Second hand shows hours and third hand which is smaller than other shows hours.
San Francisco, California is 3 hours behind New York. There will be 12pm in New York when it is 9 am in San Francisco. Day and night happens because of our earth is spinning about itself. when we take a football in the dark room and illuminated it by the torch, then one side of the ball gets illuminated and other side of the ball gets dark due to shadow of its own, Same happens with our earth. it this case torch is our sun and earth is our football. The people who are on the darker side they are in the night and who are in the light side they are in the morning.
Morning starts where edge of the light is. Tme changes with lateral distance on the earth. The points which is on same longitude have same time. There is lateral displacement from San Francisco to New York. Therefore there is time lag between them.
Hence there is time lag.
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Someone please help me! Please help
Answer:
Explanation:
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1. The sponge is classified in the. kingdom.
Answer:
the sponge? huhh what
The orbit of Venus around the sun is more sharply curved than the orbit of Mars. Use one of Newton's laws to explain this
Answer:
gravity it's what keeping it to rotate and keeping it looping
Compare two processes we use to measure the age of Earth and its parts.
.
not radioactive dating my teacher said it was wrong :(
Answer:
Generally speaking, scientists have developed four different methods of determining the age of the earth. By using these methods, or a combination of them, the age of geological formations created by past events and even the fossilized bones of prehistoric animals can be determined.
Based on the research done by scientists, the Geologic Column, a graph that illustrates earth age, was developed. The Column, with its names for the epochs and eras of time, illustrates what scientists think was taking place in earth history. A small version of the Geologic Column is pictured at the right.
Explanation:
I hope this helps :)
If a train conductor is describing the speed of the train as well as the direction of the train is going to then the train conductor said to be described with the trains
Answer:
With all of that information, he's telling us the train's VELOCITY.
Explanation:
Velocity is a vector quantity made of two parts: speed and direction.
What is energy? Choose the best answer.
O Anything that travels in the form of a wave.
O Anything that makes matter move or change.
Any object in motion.
O Anything that radiates light or heat.
Answer:Anything that makes matter move or change change. Any object in motion
Explanation:
what's is the kinetic energy of a .235-kg baseball thrown at 50.0m/s
Answer:
34.51
Explanation:
k=1/2mv² is the kenetic energy equation to fill is in
k=[1/2(0.235)×50]²
Which of the following is NOT an example of acceleration?
A car is traveling 33 km/h and slows down to 25 km/h.
B.
A car is driving straight at 50 mi/h.
A car is traveling 33 km/h and speeds up to 45 km/h.
A car is traveling 33 km/h north and turns east.
Answer:
B
explanation:
The car is not making a change in speed.
the above graph shows______
A. changing acceleration
B. direction and speed
C. speed and distance traveled
D.speed and velocity
You measure my life in hours and I serve you by expiring. I’m quick when I’m thin and slow when I’m fat. The wind is my enemy.
This is so hard.
The measure of life in hours and wind is my enemy states that is a candle as it states I serve you by expiring.
What is a candle ?A candle is a stick made of wax and forms an inflammable solid substance. It has a light and gives some sort of fragrance.
It can also provide a medium to heat or to save time, as the candle is burnt the oxygen is consumed and carbon id is given out. As the statement speaks about the wind which is my enemy, it states the nature of the candle that dies out immediately.
Find out more information about the candle.
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Which of the following are common forms of energy released by electrons dropping from heightened energy levels?
Answer:
C. Light, Kinetic
Explanation:
The options:
A) Light, Heat
B)Motion, sound
C)Light, Kinetic
D)Heat, Potential
Answer:
A) Light, Heat
Explanation:
Tell me if im wrong!
Which equation should be used to calculate the speed of a wave?
speed = frequency x wavelength
speed = frequency x hertz
speed = period x wavelength
speed = period x hertz
The equation should be used to calculate the speed of a wave is speed = frequency x wavelength.
What is the formula for wave speed?The speed of a wave is calculated by the equations: V = λ . f or V = λ/T, and the unit of measurement is m/s. This speed depends on the medium: in gaseous media, the speed is lower than in solid media.
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The equation should be used to calculate the speed of a wave is speed = frequency x wavelength.
What is Speed of wave?Wave speed is the movement of a progressive wave, which is an energy-moving disturbance that takes the shape of an oscillation and moves from one place to another.
The wavelength and frequency of a wave both affect its speed. A wave's speed is a crucial factor because it enables us to estimate how quickly the wave will disperse in the medium, which is the substance or material that will carry it.
This is the water in the case of ocean waves and the air in the case of sound waves. The kind of wave and the physical properties of the medium in which it is flowing also affect a wave's velocity.
Therefore, The equation should be used to calculate the speed of a wave is speed = frequency x wavelength.
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what energy is the energy an object has due to its position relative to another object ?
a. kinetic
b. potential
c. sound
d.wind
Answer:
Potential Energy
Paul swims 7.5 kilometers in 1.5 hours. What was his average speed?
what are beats?
A: periodic fluctuations int he velocity of sound waves
B: periodic fluctuations in the wavelength of sound waves
C: periodic fluctuations in the intensity of sound waves
D:periodic fluctuations in the frequency of sound waves
Which of the following is a true statement about work?
Group of answer choices
It measure the effort it takes for an object to move
IT measures the change in an object speed
It measures how quickly an object moves
No answer text provided.
Answer:
It measure the effort it takes for an object to move
Explanation:
Work done is the force applied to move a body through a particular distance.
It can also to be said to be a measure of the effort it takes for an object to move.
The unit of work done is in Joules.
To find work done, we use the expression below:
Work done = Force x distance
A car with a mass of 1,400 kg is traveling at a speed of 40 m/s. What is its momentum?
Answer:
56000kgm/s
Explanation:
Momentum = Mass * Velocity (both in standard unit)
Therefore, the car's momentum = 1400 * 40 = 56000kgm/s (or 56000Ns)
Which part of the electromagnetic spectrum is typically used to make images based on the temperatures of objects?
X-rays
radio waves
infrared light
visible light
Answer:
X rays is wrong on edg
Explanation:
Romeo traveled by a 900 kg horse from Manitua to Verona accelerating at the rate of 20 km/hr. With what force is Romeo moving at?
Answer:
Force(Romeo moving) = 5,000 N
Explanation:
Given:
Mass of horse = 900 kg
Acceleration = 20 km/hr
Find:
Force(Romeo moving)
Computation:
Acceleration = 20 km/hr
Acceleration in m/s = 20 / 3.6 = 5.555556 m/s²
Force = m x a
Force(Romeo moving) = 900 x 5.555556
Force(Romeo moving) = 5,000 N
Describe a line that indicates moving backward on a graph
Answer:
time speed accelaration negatives backwards
Explanation:
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Drag the tiles to the boxes to form correct pairs.
Use the Hertzsprung-Russell diagram to determine which condition describes each star. Use the arrows to help you locate the stars.
Using the Hertzsprung-Russell diagram the conditions that describe each star are :
Description Stars
It is fusing hydrogen at its core ------------------> VegaIt has lost its outer shell and retained only a hot core that is slowly losing its brightness. ----------------------------> Procyon B Its temperature has decreased, but it is shining brighter than before ----------------------------------------------------------------------->PolarisHertzsprung-Russell diagram is scatterplot diagram that shows the various relationships between the intrinsic brightness of the stars plotted against their spectral types.
hence :
It is fusing hydrogen at its core describes Vega
It has lost its outer shell and retained only a hot core that is slowly losing its brightness describes Procyon B while
Its temperature has decreased, but it is shining brighter than before describes Polaris
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Answer:
It is fusing hydrogen at its core-Vega
It has lost its outer shell and retained only a hot core that is slowly losing its brightness-Procyon B
Its temperature has decreased, but it is shining brighter than before-Polaris
Explanation:
this is the correct answer for edmentum only
1. How much thermal energy does a 2kg steel block
(c=450J/kg°C) lose when it cools from 300°C to 20°C?
please help me and show the working out.
HELP PLS MARKING BRANLIST 100 Pts TAKING TEST RN
A shopping cart is going 2.0 m/s and comes to a complete stop after 4 seconds. What was the cart's acceleration?
8 m/s2
-0.5 m/s2
0.5 m/s2
-8 m/s2
Answer:
0.5 m/s2
Explanation:
accelration formula : final velocty - starting velocity divided by time
A closed cylindrical tank of radius 3.5 m and height 2m is made from
a sheet of metal. How much sheet of metal is required ?
Explanation:
Total surface area of cylinder:
[tex]2\pi \times r(h + r) \\ 2 \times \pi \times 3.5(3.5 + 2) \\ 2\pi \times 19.25 = 120.951317 \\ 120.95 \: {cm}^{2} [/tex]
sheet of metal required = 120.95 cm^2
Explanation:
Answer:
Given :-
A closed cylindrical tank of radius 3.5 m and height 2 m is made from a sheet of metal.
To Find :-
How much sheet of metal is required.
Formula Used :-
[tex]{\red{\boxed{\large{\bold{T.S.A\: of\: cylinder\: =\: 2{\pi}r(r + h)}}}}}[/tex]
where,
r = Radius
h = Height
Solution :-
Given :
Radius = 3.5 m
Height = 2 m
According to the question by using the formula we get,
⇒ [tex]\sf T.S.A =\: 2 \times \dfrac{22}{7} \times 3.5(3.5 + 2)[/tex]
⇒ [tex]\sf T.S.A =\: 2 \times \dfrac{22}{7} \times 3.5(5.5)[/tex]
⇒ [tex]\sf T.S.A =\: 2 \times \dfrac{22}{7} \times 3.5 \times 5.5T.S.A=2×722×3.5×5.5
⇒ \sf T.S.A =\: 2 \times \dfrac{22}{7} \times 19.25[/tex]
⇒ [tex]\sf T.S.A =\: 2 \times 60.5[/tex]
➠ [tex]\sf\bold{\purple{T.S.A =\: 121\: {m}^{2}}}[/tex]
∴ 121 m² of sheet of metal is required.
Which are most likely to be used during a routine visit to the dentist?
CO
radiopharmaceuticals and X-rays
ultrasound and X-rays
lasers and tracers
ultrasound and radiopharmaceuticals
Answer:
The most likely items to be used are;
Ultrasound and X-rays
Explanation:
A routine visit to a dentist consists of two areas of activities, including;
a) Dental examination and check up
b) Oral prophylaxis, and dental cleaning
The dental examination may involve the use of X-rays, which allow the detection of cavities between the teeth
The dental cleaning can be carried out with the use of an ultrasound cleaner, which allow the cleaning of sensitive teeth without hurting the patient
Therefore, the items most likely to be used during a routine dental visit are ultrasound and X-rays
Answer:
ultrasound and x-rays
Explanation:
A ball rolls with a speed of 3 m/s across a level table that is 1.5m above the floor. How far along the floor is the landing spot from the table?
Answer:
d = 1.65 m
Explanation:
Given that,
The speed of a ball, v = 3 m/s
A ball rolls a level table that is 1.5 m above the floor.
We can find how long the ball is in free fall. We can use the second equation of kinematics as follows :
[tex]s=ut+\dfrac{1}{2}gt^2[/tex]
u is the initial speed in the vertical direction
So,
[tex]s=\dfrac{1}{2}gt^2\\\\t=\sqrt{\dfrac{2s}{g}} \\\\t=\sqrt{\dfrac{2\times 1.5}{9.8}} \\\\t=0.55\ s[/tex]
Now, using the formula of velocity.
[tex]v=\dfrac{d}{t}\\\\d=vt\\\\d=3\times 0.55\\\\d=1.65\ m[/tex]
So, the landing spot is at 1.65 m from the table.
a satellite with a mass of 1800 kg is placed at an altitude of 594 km above the surface of Europa. What is the strength of the gravitational force on the satellite?
what safety precautions do you have to keep in mind when playing invasion games?
Wear protective gear, such as helmets, protective pads, and other gear.
Warm up and cool down.
Know the rules of the game.
Watch out for others.
Don't play when you're injured.
Which of the following scenarios demonstrates a transfer
between kinetic energy and potential energy?
Answer:
what scenarios? but kinetic is energy in motion (like a ball rolling) and potential is stored energy (ball laying on ground)
example (kinetic to potential) : baseball flying and and lands on the ground then stops rolling
roller coaster rolling down a hill then stopping (kinetic to potential)
roller coaster on top of a hill and then going down (potential to kinetic)
Explanation:
Which of the following are
mechanical waves?
A. waves that travel in empty space
B. sound and ocean waves
C. light waves
D. x-rays
Answer:
sound waves are mechanical waves
Explanation:
Mechanical waves needs a media through which they can transmit, and media must have elasticity