Answer:
A) 1500cm ^2
B) 30000 CM ^3
help me!! giving out brainlest
If the distance to a distant galaxy is recorded as 10,000 light years, then light must have been traveling for 5000 years to reach the Earth.
True or false
Pls Help! first reply will get brainliest
Pls answer I will make brainlist and 20 point
Define each vocabulary word and use each word in a sentence
Reflection
Refraction
Diffraction
absorption
interference
standing wave
Resonance
Answer:
Reflection:
The phenomenon of a propagating wave (light or sound) being thrown back from a surface
Sentence: Your reflection is what you see in the mirror. Other things that bounce back at you are also reflections — light waves, sound waves, even your thoughts.
Refraction:
Definition: The change in direction of a propagating wave (light or sound) when passing from one medium to another
Sentence: Refraction is the bending of light or sound as it passes through something like a wall (sound) or a window (light).
Diffraction:
Definition: When light passes sharp edges or goes through narrow slits the rays are deflected and produce fringes of light and dark bands
Sentence: Diffraction is the process of light bending around an obstacle or spreading out after it moves through a small space. If you study physics, you'll learn about the diffraction of light waves.
Absorption:
Definition: (chemistry) a process in which one substance permeates another; a fluid permeates or is dissolved by a liquid or solid
Sentence: Absorption describes the process of absorbing or soaking up something: Sponges are good at water absorption; dark colors are better for heat absorption.
Interference:
Definition: The act of hindering or obstructing or impeding
Sentence: Interference is something that is in your way. If the sound of your sister's band practicing keeps you from getting your homework done, that’s interference.
Standing wave:
Definition: A wave (as a sound wave in a chamber or an electromagnetic wave in a transmission line) in which the ratio of its instantaneous amplitude at one point to that at any other point does not vary with time
Sentence: A bubble, trapped and held in a fixed position by an acoustic standing wave, begins to move erratically if a threshold wave amplitude is exceeded. The longitudinal standing wave is synchronously forced and resonated while the cross-wave is not resonant and is of higher order in amplitude.
Resonance:
Definition: Having the character of a loud deep sound; the quality of being resonant
Sentence: If you have a loud, deep voice, then your voice has resonance, and if your words are powerful and meaningful, then your words have resonance, too. Something with resonance has a deep tone or a powerful lasting effect.
I hope this helps! :)
A 62 kg wake boarder is being pulled by a boat with a force of 124 N. What is the acceleration of the wake boarder?
Answer: 2m/s
Explanation:
The acceleration of the wake boarder is equal to 2 m/s².
What is acceleration?Acceleration of a body can be described as the change in velocity of a body with respect to time. The acceleration is a vector parameter posses both magnitude and direction. Acceleration is described as as the second derivative of position w.r.t. time and the first derivative of the velocity of an object w.r.t. time.
According to Newton's 2nd law of motion, the force (F) acting is equal to the product of the mass and acceleration (a).
F = ma
or, a = F/m
Therefore, acceleration (a) is inversely proportional to the mass (m).
Given, the force with which the boat pulled wake boarder, F = 124 N
The mass of the wake boarder = 62 Kg
The acceleration of the wake boarder, a = 124/62 = 2 m/s²
Therefore, the acceleration of the wake boarder is 2 m/s².
Learn more about acceleration, here:
brainly.com/question/3046924
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A 8 g object displaces 50ml of water, what is its specific gravity?
0.16
400
16
8.3
Answer:
8.3
Explanation:
thats what i think sorry if its wrong im ok at doing this stuff
Where is the most appropriate place to put a hydroelectric generator? Point A, B, or C?
EXPLAIN.
Answer:
It is c and i can't explain right now
Explanation:
NEED HELP SCIENCE
Two asteroids crashed. The crash caused both asteroids to change speed. Scientists want to use the change in speed and motion to figure out which asteroid has more mass. Based on the information in the diagram, which statement is correct? In your answer, explain what the forces were like and why the asteroids changed their motion.
dont try to get points
Look at picture 1 and 2. Answer my question correctly.
Answer:
I believe the answer is B
Explanation:
Answer:
answer is c
Explanation:
1.After striking the ball, it is important to ______.
a. take your eye off the ball
b. back away from the ball
c. run toward the ball
d. follow through
.
2.When attempting to strike the ball, it is important to always keep your eye on the ball. What is this an example of?
1.speed
2.agility
3.hand eye coordination
4.balance
3.Which sport does not involve striking?
badminton
hockey
baseball
basketball
Answer:
1=A 2=3 3=Badmintion
Explanation:
I think I'm correct on these
shxiuawgdaegfbfhsdf so gen z sucks. i am not happy to be apart of this. yall get mad and pressed over everything. yall "cancel" people for not putting tw on stuff if they have marks on their body, if theyre skinny. Yall are NOT powerfull. youre just like any other gen. stop.
Answer:
chile-
Explanation:
people should put triggers on their videos. if its healed scars its fine but it can really trigger people i dont think you understand how this works-
1 question of the weak : How far away from Earth is the M87 black hole?
first to answer correct gets branlyest
Answer:
it's about 55 million light years away
Answer:
55 mil lightyears away
Explanation:
A student needs to travel a total of 400 miles to reach his vacation destination . if he drives at an average speed of 50 mph how many hours will it take for him to complete the 400 miles ??.
Answer:
It'll take the student 8 hours.
Explanation:
All you need to do is divide 400 by 50 which is 8. To check this answer multiply 50 x 8 and it'll also equal 400.
If 6 Chlorine atoms come out of a chemical reaction, how many must have entered into the reaction?
Answer: 2
Explanation:
How did you figure that out? (think of FORMULA!)
Answer:
the most potential energy would be at the highest point and the least it's at the lowest point so let's say and rollercoaster when it's like moving up its gaining potential energy while it's going down it loses potential energy (sorry if u get it wrong)
1. LAW OF SUPERPOSITION: When observing rock layers, the oldest rocks/fossils can be found at the ______________, while the youngest can be found at the _______________.
a. middle, bottom
b. left, right
c. bottom, top
d. top, bottom
2. Two rock layers contain fossils of similar organisms. What is likely true of these rock layers?
a. They were from different environments.
b. They had advantageous traits.
c. They had analogous structures.
d. They were from the same time period.
ps this is science
Answer:
Q1. Young rocks are found on top, and old layer are found on the bottom.
Q2. Layers of sedimentary rock. Fossil layers are fossils that formed in sedimentary rock. When, over a long time, layers and layers of sediments get deposited on top of each other, the weight of the top layers presses down on the bottom layers, forming them into rock called sedimentary rock
Explanation:
Sedimentary rocks are deposited one on top of another. Therefore, the youngest layers are found at the top, and the oldest layers are found at the bottom of the sequence.
Name some applications of white surfaces.
Wave interactions
Define each vocabulary word and use each word in a sentence
Reflection
Refraction
Diffraction
absorption
interference
standing wave
Resonance
Hi! I want to know this
Answer:
in the picture
Explanation:
Science help please....
Look at both pictures. Answer the question correctly.
Answer:
A I think hope it helped.
Explanation: