Answer:
independent: type of paper
dependent: distance
Explanation:
the independent variable determines what will happen to the dependent varieble, just as the type of paper determines how far the plane will fly
What would happen if you touched an object that is the same temperature as your hand? Would any heat transfer happen? Explain your answer in 4-5 sentences.
Answer:
It actually depends.
Explanation:
in the case of a metal ur hand will absorb the heat (but it depends on the temperature, this ans favours hot and cold but not neutral or room temperature), in the case of human to human I think no heat transfer will take place, in the case of liquids(for hot temperature ,it would even for cold but not room).
It basically involves application
A 1000 kg boulder sits at the top of a 50-meter high cliff. Determine the amount of potential energy possessed by the boulder if the acceleration due to gravity is 9.8 m/s2. The boulder has_______(magnitude/ number)_______(units) of Potential Energy.
Answer:
490000J
Explanation:
Given parameters:
Mass of boulder = 1000kg
Height of cliff = 50m
Acceleration due to gravity = 9.8m/s²
Unknown:
Potential energy = ?
Solution:
Potential energy is due to the position of a body. It is expressed as;
P.E = mgH
m is the mass
g is the acceleration due gravity
H is the height
Now insert the parameters and solve;
P.E = 1000 x 9.8 x 50 = 490000J
Data:
m = 1000 kg
h = 50 m
g = 9.8 m/s^2
Find:
P.E = ?
Formula:
P.E = mgh
Solution:
P.E = mgh
P.E = (1000)*(9.8)*(50)
P.E = 490000 J
Result:
P.E = 490000 Joule
Go around your house and hit (or tap) ten different objects. The objects should be different shapes and made of different material (choose things to hit that won’t break!). Each object is a different medium for sound. Try to hit each using the same amount of energy. Describe each object that you hit. What is its shape and what is it made of? Then describe how it sounds to you. Does it transmit sound well? Does it absorb sound? Is the sound loud or soft? Is there a “ring” to the sound? Does it sound like a “thunk” or does it sound like a drum? Rank the ten objects from loudest to softest. Draw some conclusions based on your results from Steps 1 and 2. For example, are there a certain shapes or materials that are better or worse media for sound travel?
Answer:
Explanation:
ball ( it sound like thup thup it is softly harsh in voice )
book ( tak tak it is hard in voice )
bed ( pat pat it is soft in voice )
Door, window, picture, floor,stairs, wall, desk, backpack, paper, bed all of these produce different sound.
What do you mean by sound?The term sound is defined as an acoustic wave is a vibration that travels through a gas, liquid, or solid transmission medium. In terms of human physiology and psychology, sound is the brain's receipt of these waves and perception of them.
A mechanical disturbance that causes an equilibrium condition to be disturbed and propagates by an elastic material medium.
The vibration of an object creates sound, which travels from one place to another by a medium. Vibration is the phrase used to explain an object's to-and-fro or back-and-forth motion. Vibrations are generated by objects in motion.
Therefore, stairs, wall, door, window, picture, floor, desk, backpack, paper, bed all of these produce different sound.
To learn more about sound, refer to the link below:
https://brainly.com/question/14595927
#SPJ2
I will pick the most Brainliest but... i need u to tell me how too
What happens when a penny is dropped from a height of 20 meters?
A. The force of gravity causes it to accelerate.
B. Its mass doubles for every second it falls.
C. It changes direction every 9.8 meters.
D. It falls at a constant velocity.
Answer:
I think it’s a
Explanation:
Answer:
It will accelerate option A
Explanation:
When you drop anything it will continue to accelerate untill it reaches a max speed or friction forces it to slow down or stop.
can someone help me with this please