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3 years ago

explain y it is easier to loosen a tight but using a spanner with along handle than with a short handle

Physics

1 answer:

8090 [49]3 years ago

3 0

Answer:

This is because using a long handled requires less force to the center of gravity and makes it easier to rotate than a short handled spanner

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How many dots should be drawn in the lewis dot structure for an atom of sodium A)19 B)8 C)4 D)1

Stells [14]

Na is in the first column on the periodic table so therefore it would have 1 valence electron
D 1

6 0

3 years ago

A certain alarm clock ticks four times each second, with each tick representing half a period. The balance wheel consists of a t

Semenov [28]

Answer:

a. $I=2.77x10^{-8} kg*m^2$

b. $K=4.37 x10^{-6} N*m$

Explanation:

The inertia can be find using

$I = m*r^2$

$m = 0.95 g * \frac{1 kg}{1000g}=9.5x10^{-4} kg$

$r=0.54 cm * \frac{1m}{100cm} =5.4x10^{-3}m$

$I = 9.5x10^{-4}kg*(5.4x10^{-3}m)^2$

$I=2.77x10^{-8} kg*m^2$

now to find the torsion constant can use knowing the period of the balance

T=0.5 s

$T=2\pi *\sqrt{\frac{I}{K}}$

Solve to K'

$K = \frac{4\pi^2* I}{T^2}=\frac{4\pi^2*2.7702 kg*m^2}{(0.5s)^2}$

$K=4.37 x10^{-6} N*m$

3 0

3 years ago

True or False: According to the Arkansas Driver License Study Guide, you must position your hands on the opposite sides of the w

Alchen [17]

Answer:

True

Explanation:

This is a universal rule for all standard motor vehicles.

7 0

3 years ago

Frost wedging happens when _____.

KiRa [710]

Answer: water freezes inside a rock, causing it to break

Weathering is a natural process in which the rocks break into pieces or sediments by the action of wind, water and chemical agents. Frost wedging is a physical weathering process. It occurs in an area where temperature fluctuations occurs due to change in the climatic conditions. This occurs due to rapid heating and cooling. The rocks lying in a cold environment, the water residing in the rocks gets freezed. The water in ice form that is solid form acquire more space than in liquid form, therefore, the developed ice will affect the physical structure of the rock. The formation of ice results in the development of break or crack in the rock typically in the shape of a wedge and thus the phenomena is called as frost wedging.

Hence, frost wedging happens when water freezes inside a rock, causing it to break.

8 0

3 years ago

Use the data table on the left to complete the

Zina [86]

Answer:

What is the elapsed time for Trial B? - 3.0

What is the average speed for Trial B? - 1.3

Explanation: