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qaws [65]
3 years ago
10

Physical values in the real world have two components: magnitude and

Physics
1 answer:
Nadusha1986 [10]3 years ago
6 0

Answer:

Dimension.

Explanation:

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An object is hung from a spring balance attached to the ceiling of an elevator cab. The balance reads 85 N when the elevator is
Ilia_Sergeevich [38]

Answer:

Explanation:

Balance force ( W ) = 85 N

a)  moving upward with constant velocity (V ) = 7.9 m/s.

The reading will not change since it is moving with constant velocity

  W = 85 N

b) Moving upward with V = 7.9 m/s and decelerating at the rate of (a ) = 1.1 m /s²

The net force ( F ) = W - ma

where m = W/g = 85/9.81 = 8.6646 kg

F = 85 - 8.6646 * 1.1 = 75.4689 N

4 0
3 years ago
How are a symbol and a model both examples of a representation?
viva [34]

Answer:

A symbol and a model are both examples of a representation because they are presented in place of the real thing.

Explanation:

A symbol is a sign, a letter, mark, token, figure, or image used to stand in place of an object, function, or process.  For example, co2 is used in Chemistry to represent carbon dioxide.  There are many symbols representing other objects or meanings.  Mathematically, we can state that "a" equals 40.  "a" is a symbol representing the numerical value "40." Similarly, a model is a representation of a structure or a person on a smaller scale.  For example, Architects produce models of buildings and other projects that they design.

6 0
3 years ago
A golf club rotates 215 degrees and has a length (radius) equal to 29 inches. The time it took to swing the club was 0.8 seconds
vichka [17]

Answer:

The average linear velocity (inches/second) of the golf club is 136.01 inches/second

Explanation:

Given;

length of the club, L = 29 inches

rotation angle, θ = 215⁰

time of motion, t = 0.8 s

The angular speed of the club is calculated as follows;

\omega = (\frac{\theta}{360} \times 2\pi, \ rad) \times \frac{1}{t} \\\\\omega =  (\frac{215}{360} \times 2\pi, \ rad) \times \frac{1}{0.8 \ s} \\\\\omega = 4.69 \ rad/s

The average linear velocity (inches/second) of the golf club is calculated as;

v = ωr

v = 4.69 rad/s  x  29 inches

v = 136.01 inches/second

Therefore, the average linear velocity (inches/second) of the golf club is 136.01 inches/second

8 0
3 years ago
Why is the absolute magnitude of some stars greater than their apparent magnitude
SSSSS [86.1K]
<span>answer under the link: http: //briskrange.com/7gAl</span>
6 0
4 years ago
Pls answer need help
igomit [66]

Answer:

See below

Explanation:

Find the NET forces on the objects

A  20==>

B    0

C  30==>

D  15==>    

So biggest accel = C because it has the most force acting on it

 next is A because it has the next biggest force

    next is  D        then    B ...B has no net force acting on it  

6 0
3 years ago
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