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OverLord2011 [107]
3 years ago
7

A crowbar of 2m is used to lift an object of 800N. If the effort is 160m, calculate the effort applied.

Mathematics
2 answers:
maria [59]3 years ago
8 0

Answer:

\boxed{ \bold{ \huge{ \boxed{ \sf{10 \: N}}}}}

Step-by-step explanation:

Given,

Load distance ( LD ) = 2m

Load ( L ) = 800 N

Effort distance ( ED ) = 160 m

Effort ( E ) = ?

<u>Finding the Effort applied</u>

Apply the principal of simple machine :

\boxed{ \sf{L \times LD = E\times ED}}

\longrightarrow{ \sf{800  \times 2 = E \times 160}}

\longrightarrow{ \sf{1600 = 160 \: E}}

\longrightarrow{ \sf{160E = 1600}}

\longrightarrow{ \sf{ \frac{160E}{160}  =  \frac{1600}{160} }}

\longrightarrow{ \sf{E = 10 \: \: newton}}

Effort applied = 10 N

Hope I helped!

Best regards! :D

Paul [167]3 years ago
7 0

Answer:

It's of science not of mathematics

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Answer:

y - 7 = 16/13(x - 7)

General Formulas and Concepts:

<u>Alg I</u>

Point-Slope Form: y - y₁ = m(x - x₁)  

  • x₁ - x coordinate
  • y₁ - y coordinate
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Slope Formula: m=\frac{y_2-y_1}{x_2-x_1}

Step-by-step explanation:

<u>Step 1: Define</u>

Point (-6, -9)

Point (7, 7)

<u>Step 2: Find slope </u><u><em>m</em></u>

  1. Substitute:                   m=\frac{7+9}{7+6}
  2. Add:                             m=\frac{16}{13}

<u>Step 3: Write equation</u>

y - 7 = 16/13(x - 7)

3 0
3 years ago
The number 9.37 rounded to the nearest tenth is 9.4 Is this correct?y or y not
PSYCHO15rus [73]
Yes, this is correct. The tenths place is the first number to the right of the decimal. There is a 3 in that spot
To find if it rounds up or down, follow this rule.
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8 0
3 years ago
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3 years ago
To test for the significance of a regression model involving 3 independent variables and 51 observations, the numerator and deno
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Answer:

numerator degree of freedom = 3

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Step-by-step explanation:

The numerator degree of freedom is given by :

p - 1 ; where p = number of predictors ;

p = number of independent variables + 1

Number of independent variables = 3

p = 3 + 1 = 4

Numerator degree of freedom = p - 1 = 4 - 1 = 3

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Denominator degree of freedom = n - p = 51 - 4 = 47

6 0
3 years ago
Y=52(0.42)^x identify if it's growth or decay and determine the percentage rate of increase or decrease
Shkiper50 [21]

Answer:

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Step-by-step explanation:

Given the exponential relation :

Y=52(0.42)^x

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1 - 0.42 = r

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Rate = 0.58 * 100%

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