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OlgaM077 [116]
4 years ago
8

For an object to be in static equilibrium, the net force must be equal to zero and and The center of gravity must be above the s

upport point. The moment of inertia must be zero. The normal force must equal the weight. The net torque must be equal to zero.
Physics
1 answer:
iren [92.7K]4 years ago
8 0

Answer:

The normal force must equal the weight.

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At an age of 380,000 years, the temperature of the universe had fallen to 3000 k, and electrons could then combine with protons
Andru [333]
The major transition occurred is that the universe became transparent to light for the first time. This is the consequence that might happen because of the changes in the universe at this time. The reaction between the elements that are present in the space can affect the present universe. 
7 0
3 years ago
At a construction site, the site manager notices that a crane takes 20 seconds to lift a 500kg steel beam up to a height of 15 m
posledela
The work done is equal to the change in potential energy which is:
P.E = mgh
P.E = 500 x 9.81 x 15
P.E = 73,575 J

Power = work / time
Power = 73,575 / 20
Power = 3,700 Watts
5 0
4 years ago
A potter's wheel rotating at 215 rev/min is switched off and rotates through 75.0 revolutions prior to coming to rest. What is t
vaieri [72.5K]

Explanation:

Given :

Initial angular velocity =w_i= 215 rev/min

Final angular velocity =w_f= 0

Number of revolutions=n =75.0 rev

Using relation

w_f^2-w_i^2=2\alpha n

0-215^2=2\times 75\alpha

-308.1666 rev/min^2=\alpha

Converting to rad/s^2

\alpha =-1.45 rad/s^2

6 0
3 years ago
Audible wavelengths. the range of audible frequencies is from about 20.0 hz to 2.00×104 hz . what is range of the wavelengths of
BabaBlast [244]
Given:
f1 = 20 Hz 
f2 = 20000 Hz
speed of sound at 20 degrees celcius = 343 m/s

Solution:

for f1 = 20 Hz,

Using the equation:

lambda = speed of sound / f1 = 343 / 20 = 17.15 m 

For f2: 

lambda = speed of sound / f2 = 343 / 20000 = 0.01775 m

Therefore the wavelength range of audible sound in air would be 17.15 m to 0.01775 m.
6 0
3 years ago
Read 2 more answers
In an evironmental system of subsystem, the mass balance equation is:__________.
kolbaska11 [484]

Answer:

Explanation:

The mass balance is an application of conservation of mass, to the analysis of physical system. This is given in an equation form as

Input = Output + Accumulation

The conservation law that is used in this analysis of the system actually depends on the context of the problem. Nevertheless, they all revolve around conservation of mass. By conservation of mass, I mean that the fact that matter cannot disappear or be created spontaneously.

8 0
4 years ago
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