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wel
3 years ago
11

Desiree has a scientific question that she wants to investigate. She has developed a hypothesis and method for her experiment. W

hich step of scientific inquiry should Desiree take next?
Physics
2 answers:
avanturin [10]3 years ago
8 0
The next scientific step is to collect data to test her Hypothesis. 
Natalija [7]3 years ago
7 0
Assuming she has already researched the topic thoroughly to make her hypothesis, she should desig an experimental layout, equipment, method how it is to be done, and gain approval 
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Find the period of the leg of a man who is 1.83 m in height with a mass of 67 kg. The moment of inertia of a cylinder rotating a
Lady bird [3.3K]

Answer:

1.54 s

Explanation:

Considering that the legs constitute 16% of the total weight of the man then mass, m= \frac {16}{100}\times 67=10.72 Kg

The legs also constitute 48% of his height hence H=\frac {48}{100}\times 1.83=0.8784 m

The moment of inertia of a cylinder rotating about a perpendicular axis at one end is \frac {ml^{2}}{3} hence I=\frac {10.72\times 0.8784^{2}}{3}=2.757135974Kg.m^{2}

We also know that the period is given by 2\pi \sqrt{\frac {I}{mgh}}

Here, h=0.5H= 0.5*0.8784=0.4392 m

Taking g as 9.81 kg/m2 then

T= 2\pi \sqrt{\frac {2.757135974}{10.72\times 9.81\times 0.4392}}\\=1.535132615 s\\\boxed{\approx 1.54 s}

3 0
3 years ago
What is the mass of a 7.0 kilogram bowling ball on the surface of the moon?
babunello [35]

Answer:

1.16kg is the answer. Hope this helped

Explanation:

4 0
2 years ago
On a safari, a team of naturalists sets out toward a research station located 4.63 km away in a direction 38.7 ° north of east.
Talja [164]

This is a vector subraction problem.

5 0
3 years ago
Read 2 more answers
An airplane is flying from Dallas, Texas to Pensacola, Florida. Flying at maximum velocity, it encounters strong winds moving at
jenyasd209 [6]

Answer:

G. It will take twice as long.

Explanation:

Let's call v the original speed of the plane and d the distance between Dallas and Pensacola. The time the plane originally takes to complete the flight is

t=\frac{d}{v}

In this problem, we are told that the plane encounters wind moving at half of its speed: \frac{v}{2}, in the opposite direction. This means that the new speed of the plane is

v'=v-\frac{v}{2}=\frac{v}{2}

And so, the time the plane takes now to complete the flight is

t'=\frac{d}{v/2}=2\frac{d}{v}=2t

So, the plane takes twice the time as before.

4 0
2 years ago
A parallel plate air capacitor has a capacitance of 10 to the power -9. What potential difference is required for a charge of 5×
Maurinko [17]

The potential difference across the capacitor is 5 × 10∧4 volts and the energy stored in it is 1. 25 Joules

<h3>What is the energy in a capacitor?</h3>

The energy stored in a capacitor is an electrostatic potential energy.

It is related to the charge(Q) and voltage (V) between the capacitor plates.

It is represented as 'U'.

<h3>How to determine the potential difference</h3>

Formula:

Potential difference, V is the ratio of the charge to the capacitance of a capacitor.

It is calculated using:

V = Q ÷ C

Where Q = charge 5 × 10∧-5C and C = capacitance 10∧-9

Substitute the values into the equation

Potential difference, V = 5 × 10∧-5 ÷  10∧-9 = 5 × 10∧4 volts

<h3>How to determine the energy stored</h3>

Formula:

Energy, U = 1 ÷ 2 (QV)

Where Q= charge and V = potential difference across the capacitor

Energy, U = 1 ÷ 2 ( 5 × 10∧-5 × 5 × 10∧4)

= 0.5 × 25 × 10∧-1

= 0.5 × 2.5

= 1. 25 Joules

Therefore, the potential difference across the capacitor is 5 × 10∧4 volts and the energy stored in it is 1. 25 Joules

Learn more about capacitance here:

brainly.com/question/14883923

#SPJ1

6 0
1 year ago
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