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xenn [34]
3 years ago
13

A 3.03 kg briefcase is sitting at rest on a level floor. The acceleration of gravity is 9.81 m/s 2 . a) What is its acceleration

? Answer in units of m/s 2 . 018 (part 2 of 2) 10.0 points b) What is its weight? Answer in units of N
Physics
1 answer:
Blizzard [7]3 years ago
6 0

Answer:

a) a = 0

b) W = 29.72 N  

Explanation:

a)The acceleration of an object is defined as the change of its speed with respect to a time interval, Because the briefcase remains at rest, its acceleration (a) is zero.

a=0

b) Calculation of the weight of the briefcase

The formula to calculate the weight is the following:

W= m*g      Formula (1)

Where:

W : is the weight in Newtons (N)

m  : is the mass in kilograms (kg)

g   : is the acceleration due to gravity in meters over second square (m/s²)

Data

m=3.03 kg :  mass of the briefcase

m=9.81 m/s² : acceleration due to gravity

We replace data in the formula (1)

W= m*g = 3.03 kg * 9.81 m/s²

W= 29.72 N  

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3 years ago
The pressure in a compressed air storage tank is 1200 kPa. What is the tank’s pressure in (a) kN and m units; (b) kg, m, and s u
elixir [45]

Explanation:

Given data

Pressure P=1200 kPa

To find

Pressure in

(a) kN/m²

(b) kg/m.s²

(c) kg/km.s²

Solution

For Part (a)

P=(1200kPa)(\frac{1kN/m^{2} }{1kPa} )\\P=1200kN/m^{2}

For Part (b)

P=(1200kPa)(\frac{1kN/m^{2} }{1kPa} )(\frac{1000kg.m/s^{2} }{1kN} )\\P=1,200,000kg/m.s^{2}

For Part (c)

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Typically during thunderstorms most lightning strikes carry a negative electric charge; only a few carry a positive charge. Thun
Ierofanga [76]

Answer:<em> Option (D) is correct.</em>

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Considering the hypothesis elaborated in this comprehension, it's given that areas that tend to lie near forest fires usually have extra positive strikes since smoke carries positively charged particles. In rudimentary term, this states that occurrence of positively charged particles will result in extra positive strikes.

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3 years ago
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