All categories

3 years ago

Calculate the weight in Newtons of a person who has a mass of 69 kg.

Physics

2 answers:

Advocard [28]3 years ago

6 0

Just multiply by 10,

69 x 10= 690N

BaLLatris [955]3 years ago

5 0

I believe the answer would be 676.65885 rounded to 676.7

You might be interested in

5. The force of gravity acting on the object is object’s ______________.

Dima020 [189]

I think it's mass...

The mass of an object refers to the amount of matter that is contained by the object; the weight of an object is the force of gravity acting upon that object. Mass is related to how much stuff is there and weight is related to the pull of the Earth (or any other planet) upon that stuff.

5 0

3 years ago

If the mass of a material is 114 grams and the volume of the material is 13 cm3, what would the density of the material be?

laila [671]

114/13=m/v=d
d=8.7692 g/cm^3

4 0

3 years ago

Amy wants to know whether or not an item will float when placed in a fluid. Which of the comparisons below, when true, will mean

o-na [289]

A. The object is made of stone or metal, which always sink.

B. The force of gravity is stronger than the buoyant force.

C. The buoyant force is stronger than the force of gravity.

D. The mass of the item is greater than its gravity

The answer is C

4 0

3 years ago

Determine the length of the tungsten filament in a 100 watt lightbulb given: (i) the resistivity of tungsten is 5.6 × 10−8 Ω · m

svetoff [14.1K]

Answer:

0.34148 m

Explanation:

$\rho$ = Resistivity of tungsten = $5.6\times 10^{-8}\ \Omega m$

d = Diameter = 0.0018 inch

r = Radius = $\dfrac{r}{2}=\dfrac{0.0018}{2}=0.0009\ in$

$r=0.0009\times 0.0254=0.00002286\ m$

$\alpha$ = Temperature coefficient of tungsten = $0.0045 /^{\circ}C$

Power is given by

$P=\dfrac{V^2}{R}\\\Rightarrow R=\dfrac{V^2}{P}\\\Rightarrow R=\dfrac{120^2}{100}\\\Rightarrow R=144\ \Omega$

We have the equation

$R_2=R_1[1+\alpha(T_2-T_1)]\\\Rightarrow R_1=\dfrac{R_2}{1+\alpha(T_2-T_1)}\\\Rightarrow R_1=\dfrac{144}{1+0.0045(2550-25)}\\\Rightarrow R_1=11.64812\ \Omega$

Resistance is given by

$R=\rho\dfrac{l}{A}\\\Rightarrow l=\dfrac{RA}{\rho}\\\Rightarrow l=\dfrac{11.64812\times \pi (0.00002286)^2}{5.6\times 10^{-8}}\\\Rightarrow l=0.34148\ m$

The length of the filament is 0.34148 m

7 0

3 years ago

Which graph represents the relationship between the magnitude of the gravitational force exerted by earth on a spacecraft the di

Neko [114]

Answer:

B as distance increase force decrease, but it is not a linear relationship.

8 0

3 years ago