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Eddi Din [679]
3 years ago
8

Fatima is watching her pet cat, Winter, napping in the sun. Fatima is curious about the heart rate of Winter when she is napping

, so she develops this scientific question: Does a cat's heart rate change while it is napping? She decides to develop a hypothesis to test this scientific question. What could Fatima's hypothesis be?
Physics
2 answers:
Vsevolod [243]3 years ago
7 0

Answer:

The correct answer will be-<em>"If a cat is naps, the heart beat rate of cat changes."</em>

Explanation:

A scientific hypothesis is a predictive statement based on the works of an earlier investigation. The hypothesis is considered as a well-educated guess which explains the scientific question in a limit.

The scientific hypothesis is proposed in such a way that it could be tested easily through the experiments which can disprove or prove the hypothesis and explain the question.

In the given question, the predicted hypothesis will be-<em> "If a cat naps, the heartbeat rate of cat changes."</em> which can be measured through the instruments.

svetoff [14.1K]3 years ago
3 0

Answer:

Explanation:

There are two hypotheses she could test:

A cat's heart rate changes while it is napping.

A cat's heart rate does not change while it is napping.

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Answer:

d. According to the previous theorem:

(kh^2)/2-mgh-(m(2v)^2)/2=0,

126h^2-2.577h-8.236=0,

h=0.266 m.

Explanation:

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Why do electrons flow threw a wire
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Answer:

When electric voltage is applied, an electric field within the metal triggers the movement of the electrons, making them shift from one end to another end of the conductor. Electrons will move toward the positive side.

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1 year ago
All music, _______ in the world, is from only ______ notes.​
AnnZ [28]

Answer:

All music in the world, is form only two notes and those notes are described below in detailed explanation.

Explanation:

In the chromatic scale, there are basically seven central musical notes, designated A, B, C, D, E, F, and G. They individual express a separate pitch or frequency. For illustration, the "central" A note has a pitch of 450 Hz, and the "common" B note has a pitch of 495 Hz.

Varieties Of Musical Notes You Require To Understand

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5 0
2 years ago
A Boeing 747 "Jumbo Jet" has a length of 59.7 m. The runway on which the plane lands intersects another runway. The width of the
tia_tia [17]

Answer:

t = 1.48 s

Explanation:

As we know that length of the Boeing plane is

L = 59.7 m

width of the intersection is given as

w = 25.0 m

now we know that deceleration of the plane is given as

a = -5.4 m/s^2

Also the final speed of the plane while it clears the intersection is given as

v_f = 53 m/s

now we have

d = (\frac{v_f + v_i}{2}) t

(25 + 59.7) = (\frac{53 + v_i}{2}) t

also we know that

v_f - v_i = at

53 - v_i = -5.4 t

now we have

84.7 = (\frac{53 + 53 + 5.4t}{2})t

by solving above equation we have

t = 1.48 s

5 0
2 years ago
In an engine, an almost ideal gas is compressed adiabatically to half its volume. In doing so, 2820 J of work is done on the gas
Dmitry_Shevchenko [17]

Answer:

  1. Q=0
  2. U=2820
  3. Energy increases

Explanation:

From the question we are told that

Work done W=2820

a)Generally the heat flow for an adiabatic process is 0 (zero)

Q= U + W =>0

Q=0

b)Generally Change in internal energy of gas is mathematically given by

Since W=-2820J

Therefore

U=2820

Giving

Q= 2820 -2820

Q=O

c)With increases in internal energy brings increase in temperature

Therefore

Energy increases

3 0
2 years ago
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