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soldier1979 [14.2K]
3 years ago
14

The teacher shared a demonstration with the same students. She begin by standing on a desk, holding a book and an open piece of

paper in the air, away from her body.. She asked her students: "Which will hit the ground first if I drop them?" Based on the previous data, the students answered that they would hit the ground at the same time. When she dropped them, the book hit the ground first. Next she crumpled up the paper and repeated the experiment.
Elaborate on the two paper drops. Was there different results? Why?

A) No. In both cases, the book dropped faster than the paper because it had so much more mass.
B) Yes. The crumpled paper dropped at the same rate as the book; the flat sheet did not due to air resistance.
C) In both cases the paper fell at the same rate because in both cases the air resistance and the masses were the same.
D) Yes there was a difference in the rate at which the papers fell. The crumpled paper had the same air resistance as the book so they fell at the same rate.

Physics
1 answer:
bazaltina [42]3 years ago
7 0

Answer:

I think its c

Explanation:

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Which of the following statements about Masters programs is not correct?
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The correct answer is C. The level of competition is not very high in most Masters  programs.

Explanation:

In sports, the word "master" is used to define athletes older than 30 and that usually are professional or have trained for many years, although novates are also allowed. This means in most cases in Master programs and teams a high level of competition can be expected due to the experience and extensive training of Master athletes. Indeed, many records in the field of sport belong to Master athletes rather than younger athletes. According to this, the incorrect statement is "The level of competition is not very high in most Masters  programs".

7 0
3 years ago
Help and explain thanks
ludmilkaskok [199]

Answer:

the faster an object moves the more kinetic it has. the more mass an object has, the more kinetic energy it has.

4 0
2 years ago
True or false as heat and pressure decreases one type of metamorphic rock will transform into another type
dezoksy [38]

Answer: True

Explanation:  Metamorphism is the changing of rocks by heat and pressure. During this process, rocks change either physically and/or chemically. They change so much that they become an entirely new rock. Figure 4.22: The platy layers in this large outcrop of metamorphic rock show the effects of pressure on rocks during metamorphism.

6 0
3 years ago
Two Jupiter-size planets are released from rest 1.40×10^11 m apart.. What are their speeds as they crash together?
Sonbull [250]
M₁ = mass of planet #1 
M₂ = mass of planet #2 
M = total mass 
R₁ = radius of planet #1 
R₂ = radius of planet #2 
d₁ = initial distance between planet centers 
d₂ = final distance between planet centers 
a = semimajor axis of plunge orbit 
v₁ = relative speed of approach at distance d₁ 
v₂ = relative speed of approach at distance d₂ 

M₁ = M₂ = 1.8986e27 kilograms 
M = M₁ + M₂ = 3.7972e27 kg 
G = 6.6742e-11 m³ kg⁻¹ sec⁻² 
GM = 2.5343e17 m³ sec⁻² 
d₁ = 1.4e11 meters 
a = d₁/2 = 7e10 meters 
R₁ = R₂ = 7.1492e7 meters 
d₂ = R₁ + R₂ = 1.42984e8 meters 
v₁ = 0 
v₂ = √[GM(2/d₂−1/a)] 
<span>
v₂ = 59508.4 m/s </span>
<span>
The time to fall is 1337.7 days

.</span>I hope my answer has come to your help. Thank you for posting your question here in Brainly.
7 0
3 years ago
Hans Christian Ørsted observed that when a current-carrying wire was brought near a compass, the compass needle moved.
BaLLatris [955]

Answer: magnet, motor

Explanation :

Hans Christian Orsted was the scientist who gives the relation between electricity and magnetism. He found that the magnetic needle gets deflected on the application of electric current to the circuit.

He observed that the current carrying wire acted like a magnet.  

In 1821 Michael Faraday understands Orsted's work and invented electric motor. An electric motor is a device which is used to convert electrical energy to mechanical energy.

8 0
3 years ago
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